778
NOUS45 KBOU 190045
PNSBOU
COZ030>051-192300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
645 PM MDT SAT JUL 18 2026
..THIS WEEK IN METRO DENVER WEATHER HISTORY
7-25 IN 1934...A STREAK OF 15 CONSECUTIVE DAYS OF 90 DEGREES...FROM THE
7TH TO THE 25TH...RANKED 5TH ON THE LIST OF HOT STREAKS. THE
RECORD OF 24 CONSECUTIVE DAYS WAS ESTABLISHED IN THE SUMMER OF
2008.
13-5 IN 2008...A STREAK OF 24 CONSECUTIVE DAYS OF 90 DEGREES...FROM
JULY 13TH TO AUGUST 5TH...SHATTERED THE PREVIOUS RECORD OF 18
CONSECUTIVE DAYS ESTABLISHED IN 1901 AND 1874. IRONICALLY...
NO NEW SINGLE DAY RECORD HIGH TEMPERATURES WERE SET IN THE
MONTH OF JULY. IN AUGUST HOWEVER...A RECORD OF 104 DEGREES
WAS SET ON THE 1ST...AND ANOTHER RECORD OF 103 DEGREES WAS
SET ON THE 2ND. IN ADDITION...A RECORD LOW MIN OF 70 DEGREES
WAS SET ON AUGUST 2ND.
18-19 IN 2003...FROM THE 18TH INTO THE 19TH...HEAVY RAIN PRODUCING
THUNDERSTORMS CAUSED FLASH FLOODING ACROSS SOUTHERN METRO
DENVER. AUTOMATED RAIN GAGES MEASURED 2 TO 3 INCHES OF
RAIN IN LESS THAN AN HOUR. THE HEAVY RAINFALL CAUSED MANY
INTERSECTIONS AND UNDERPASSES TO FLOOD...STRANDING MOTORISTS.
SECTIONS OF I-25 AND I-225 WERE CLOSED DUE TO THE HIGH WATER.
18-2 IN 1987...FROM JULY 18TH TO AUGUST 2ND...A STREAK OF 16
CONSECUTIVE DAYS OF 90 DEGREES RANKED 4TH ON THE LIST OF HOT
STREAKS. THE RECORD OF 24 CONSECUTIVE DAYS WAS ESTABLISHED
IN THE SUMMER OF 2008.
19 IN 1875...RECENT HEAVY RAINS PRODUCED HIGH WATERS ON MANY
CREEKS AND RIVERS IN THE AREA...WHICH THREATENED THE
DESTRUCTION OF PROPERTY AT SOME LOCATIONS. CHERRY CREEK
IN THE CITY WAS RUNNING THE HIGHEST IN 10 YEARS. HEAVY
RAIN IN THE MINING REGIONS OVER THE LAST 2 DAYS RESULTED
IN WATER RUNNING "EVERYWHERE" AND THE SUSPENSION OF SOME
WORK.
IN 1881...A THUNDERSTORM PASSING ACROSS THE CITY PRODUCED
LIGHTNING WITH NO RAIN. A WOMAN WAS SERIOUSLY INJURED
WHEN STRUCK BY LIGHTNING SEVERAL BLOCKS FROM THE WEATHER
OFFICE IN DOWNTOWN DENVER.
IN 1934...THE TEMPERATURE REACHED A HIGH OF 100 DEGREES IN
DOWNTOWN DENVER.
IN 1965...HAIL...RAIN...AND LIGHTNING HIT WEST METRO DENVER.
HAIL STONES AS LARGE AS 1 1/2 INCHES IN DIAMETER ACCUMULATED
TO A DEPTH OF 2 INCHES IN EVERGREEN WHERE 2.95 INCHES OF
RAIN IN 2 HOURS CAUSED SOME FLOODING IN THE BUSINESS SECTION
OF THE TOWN. LIGHTNING CAUSED SOME POWER OUTAGES.
IN 1973...TWO FUNNEL CLOUDS WERE OBSERVED 5 MILES SOUTHEAST OF
LITTLETON. THE SAME FUNNEL CLOUDS WERE OBSERVED FOR 20
MINUTES...5 MILES WEST AND 5 MILES WEST-SOUTHWEST OF ARAPAHOE
COUNTY AIRPORT...NOW CENTENNIAL AIRPORT.
IN 1975...LIGHTNING INJURED A MAN IN DENVER AND CAUSED POWER
OUTAGES IN AURORA...LAKEWOOD...WESTMINSTER...AND WEST DENVER.
IN 1984...STRONG THUNDERSTORM WINDS GUSTING TO 45 MPH SHATTERED
7 LARGE PLATE GLASS WINDOWS AT STAPLETON INTERNATIONAL
AIRPORT.
IN 1985...A TORNADO TOUCHED DOWN IN THE SURREY RIDGE AREA OF
NORTHERN DOUGLAS COUNTY...JUST WEST OF I-25. TEN HOMES WERE
DAMAGED; ONE UNDER CONSTRUCTION WAS NEARLY DESTROYED. TWO
VEHICLES WERE THROWN OFF I-25 INJURING THREE PEOPLE. A
PICK-UP TRUCK WAS THROWN 50 FEET BY THE TWISTER. IN
ADDITION...A CLUSTER OF SEVERE THUNDERSTORMS POUNDED ALL
OF METRO DENVER WITH TORRENTIAL RAIN...HAIL...AND WIND. THE
HEAVIEST RAIN FELL IN AURORA WHERE ONE LOCATION REPORTED
2.37 INCHES IN JUST 40 MINUTES. ONE LOCATION IN NORTHEAST
AURORA RECEIVED A TOTAL OF 4.30 INCHES FROM THE STORM.
THERE WAS EXTENSIVE STREET AND BASEMENT FLOODING...AND A
NUMBER OF ROADS WERE DAMAGED OR WASHED OUT. AN AURORA BOY
SUFFERED MINOR INJURIES WHEN HE WAS WASHED INTO A DRAINAGE
DITCH. GOLF BALL SIZE HAIL IN AURORA PILED UP TO 5 INCHES
DEEP. AN INCH OF RAIN FELL IN 20 MINUTES AT STAPLETON
INTERNATIONAL AIRPORT...CLOSING IT TO AIR TRAFFIC FOR AN
HOUR. UP TO 1 1/2 INCHES OF RAIN FELL IN JUST 15 MINUTES
OVER CENTRAL DENVER WITH THE HIGH WATER CLOSING I-25. THE
WATER WAS SO DEEP ON THE FREEWAY...THAT ONE VEHICLE WAS
COMPLETELY SUBMERGED AND PEOPLE WERE DIVING INTO THE WATER
FROM THE FREEWAY OVERPASS. THREE HOMES IN LITTLETON WERE
DAMAGED BY LIGHTNING. WIND BLEW OUT SEVERAL WINDOWS FROM
A HIGH RISE APARTMENT BUILDING IN SOUTHEAST DENVER.
RAINFALL TOTALED 1.51 INCHES AT STAPLETON INTERNATIONAL
AIRPORT.
IN 1997...TORRENTIAL RAIN AND DAMAGING HAIL PUMMELED EASTERN
SECTIONS OF METRO DENVER. HAIL UP TO 1 1/4 INCHES IN
DIAMETER FELL AT THE NATIONAL WEATHER SERVICE OFFICE ON THE
SITE OF THE FORMER STAPLETON INTERNATIONAL AIRPORT. THE
HAIL CONTINUED FOR ABOUT 15 MINUTES AND ACCUMULATED TO A
DEPTH OF 2 TO 3 INCHES...CAUSING EXTENSIVE DAMAGE TO CARS IN
THE AREA. HEAVY RAINFALL TOTALED 3.83 INCHES IN ABOUT AN
HOUR FROM THE NEARLY STATIONARY THUNDERSTORM. NUMEROUS CARS
STALLED ALONG I-70...AND SEVERAL HOMES WERE FLOODED IN EAST
DENVER. THE ROOF OF A BUILDING COLLAPSED UNDER THE WEIGHT
OF THE WATER. THE NEXT DAY SEVERAL "FATALITIES" WERE
DISCOVERED NEAR THE NATIONAL WEATHER SERVICE OFFICE; TWO
PRAIRIE DOGS WERE FOUND DEAD ALONG WITH THREE RABBITS THAT
EITHER DROWNED OR WERE KILLED BY THE LARGE HAIL.
IN 1999...LIGHTNING STRUCK TWO RESIDENCES IN LITTLETON...BUT
CAUSED ONLY MINOR DAMAGE. LIGHTNING TRIGGERED A FIRE AT A
RESIDENCE IN CHERRY HILLS VILLAGE. A SMALL PORTION OF THE
ROOF AND CEILING WERE DAMAGED BEFORE THE FIRE COULD BE
EXTINGUISHED.
IN 2000...HAIL AS LARGE AS 1 1/4 INCHES IN DIAMETER FELL NEAR
ROGGEN NORTHEAST OF DENVER.
IN 2004...HEAVY RAINFALL CAUSED FLOODING ON THE VIRGINIA CANYON
ROAD NEAR IDAHO SPRINGS...WHICH HAD TO BE CLOSED FOR REPAIRS.
IN 2006...THE TEMPERATURE CLIMBED TO A HIGH OF 100 DEGREES. THE
HIGH TEMPERATURE WAS NOT A RECORD MAXIMUM FOR THE DATE.
IN 2007...A SEVERE THUNDERSTORM PRODUCED LARGE HAIL...UP TO 1
INCH IN DIAMETER...ABOUT 6 MILES NORTH OF NORTHGLENN.
IN 2016...TWO MEN AT THE INDIAN TREE GOLF COURSE IN ARVADA WERE
STRUCK BY LIGHTNING WHEN THEY SOUGHT SHELTER FROM A RAPIDLY
DEVELOPING THUNDERSTORM UNDER A TREE. ONE MAN DIED FROM HIS
INJURIES WHILE THE OTHER SUFFERED MINOR INJURIES. VERY HEAVY
RAINFALL WAS OBSERVED ACROSS CENTRAL AND SOUTHERN PARTS OF
DENVER. THE STORM DROPPED AROUND 1.5 INCHES OF RAINFALL IN 30
MINUTES AND CAUSED MINOR STREET FLOODING. NICKEL SIZE HAIL
WAS REPORTED WEST OF PINE IN CENTRAL JEFFERSON COUNTY.
19-23 IN 2005...THE HIGH TEMPERATURE CLIMBED ABOVE 100 DEGREES ON
EACH OF THE 5 DAYS WITH READINGS OF 101 ON THE 19TH...105 ON
THE 20TH...104 ON THE 21ST...AND 102 ON BOTH THE 22ND AND 23RD.
A NEW RECORD MAXIMUM TEMPERATURE FOR THE MONTH OF JULY OF 105
DEGREES WAS SET ON THE 20TH...WHICH ALSO EQUALED THE ALL TIME
RECORD MAXIMUM FOR DENVER OF 105 DEGREES FIRST SET ON AUGUST
8TH IN 1878. DAILY MAXIMUM TEMPERATURE RECORDS WERE SET ON
EACH DAY...AND THE 5 DAY PERIOD EQUALED THE RECORD FOR THE
MOST CONSECUTIVE DAYS OF 100 DEGREES OR MORE FIRST SET FROM
JULY 4TH THROUGH 8TH IN 1989. THE INTENSE HEAT RESULTED IN
A HIGH USE OF ELECTRICITY FOR COOLING PURPOSES. THE DEMAND
FOR ELECTRIC POWER EXCEEDED THE SUPPLY AND ROLLING BLACK-OUTS...
EACH LASTING ABOUT AN HOUR...WERE SCHEDULED ACROSS METRO DENVER
DURING THE AFTERNOONS AND EARLY EVENINGS.
20 IN 1898...AN APPARENT THUNDERSTORM PRODUCED SUSTAINED NORTHWEST
WINDS TO 45 MPH WITH GUSTS TO 51 MPH.
IN 1939...THE HIGH TEMPERATURE REACHED 102 DEGREES IN DOWNTOWN
DENVER. THIS WAS THE HIGHEST TEMPERATURE RECORDED SINCE
AUGUST 8...1878...A PERIOD OF 61 YEARS...AND THE THIRD HIGHEST
TEMPERATURE OF RECORD AT THE TIME. SIX MILES TO THE EAST...
AT DENVER MUNICIPAL AIRPORT...THE MAXIMUM TEMPERATURE REACHED
104 DEGREES. A DRY PERIOD DURING MID-JULY...COMBINED WITH LOW
RELATIVE HUMIDITIES...RESULTED IN AN UNUSUALLY LARGE NUMBER
OF FOREST FIRES IN THE MOUNTAINS WEST OF DENVER.
IN 1941...AN AFTERNOON THUNDERSTORM CAUSED TWO LIGHTNING
DEATHS. THE MEN WERE STRUCK BY LIGHTNING NEAR THE DENVER
AIRPORT.
IN 1951...A THUNDERSTORM WIND GUST TO 54 MPH WAS RECORDED AT
STAPLETON AIRPORT.
IN 1965...HEAVY RAIN WEST OF DENVER DAMAGED ROADS AND BRIDGES.
TWO BRIDGES IN GOLDEN WERE WASHED OUT. LIGHTNING IN DENVER
CAUSED SOME POWER FAILURES AND FIRES...MOSTLY IN THE NORTHEAST
SECTION OF THE CITY. HEAVY RAIN CAUSED STREET FLOODING IN
THE CITY OF DENVER. HAIL AS LARGE AS 1/2 INCH IN DIAMETER
AND 0.40 INCH OF RAIN IN 5 MINUTES WERE MEASURED AT
STAPLETON INTERNATIONAL AIRPORT WHERE PRECIPITATION TOTALED
1.09 INCHES. LIGHTNING DAMAGED A HOUSE IN LITTLETON...AND
CAUSED A POWER OUTAGE IN IDAHO SPRINGS.
IN 1973...LIGHTNING DAMAGE WAS REPORTED WEST OF ARVADA.
IN 1975...HEAVY RAINS CAUSED FLASH FLOODING ACROSS METRO
DENVER...RESULTING IN THE CLOSING OF SEVERAL STREETS AND
DAMAGE TO NUMEROUS HOMES AND BUSINESSES. HAIL 1/2 TO 3/4
INCH IN DIAMETER WAS REPORTED.
IN 1976...HEAVY THUNDERSTORMS CAUSED FLOODING OF STREETS IN
SOUTHEAST DENVER AND WESTERN ARAPAHOE COUNTIES. A TOTAL OF
3.35 INCHES OF RAIN WAS MEASURED AT KASSLER SOUTHWEST OF
LITTLETON.
IN 1978...A GIRL WAS INJURED BY LIGHTNING AT A COUNTRY CLUB
SOUTHWEST OF DENVER.
IN 1984...HEAVY RAIN WAS REPORTED JUST EAST OF BUCKLEY FIELD IN
AURORA WHERE 1.15 INCHES FELL IN JUST 45 MINUTES.
IN 1986...THUNDERSTORMS DUMPED HEAVY RAIN ACROSS METRO DENVER
CAUSING EXTENSIVE STREET FLOODING...POWER OUTAGES...AND
BASEMENT FLOODING. THE GREATEST RECORDED RAINFALL WAS 4.39
INCHES IN LAKEWOOD. IN EXTREME NORTHWEST DENVER...2.29
INCHES OF RAIN FELL IN JUST 20 MINUTES. ARVADA WAS DRENCHED
WITH 2.60 INCHES OF RAIN...AND OVER AN INCH FELL IN SOUTHEAST
DENVER AND ADJACENT SECTIONS OF AURORA.
IN 1990...HEAVY THUNDERSTORM RAINS CAUSED FLASH FLOODING IN
SECTIONS OF LITTLETON WHERE 1.20 INCHES OF RAIN FELL IN
LESS THAN 30 MINUTES. THE DELUGE CAUSED DRY CREEK TO JUMP
ITS BANKS...CAUSING DAMAGE TO RESIDENTIAL STREETS...CURBS...AND
SIDEWALKS. NEARLY 100 VEHICLES WERE STRANDED FOR A TIME IN
FENDER-DEEP WATER WHEN SEWERS AND DRAINAGE DITCHES BECAME
CHOKED WITH DEBRIS. THE HEAVY RUNOFF SUBMERGED MANY
LITTLETON STREETS AND INTERSECTIONS.
IN 1992...STRONG THUNDERSTORMS MOVED SLOWLY THROUGH EAST METRO
DENVER...PRODUCING RAINFALL UP TO 2.50 INCHES IN A SHORT TIME.
WEATHER SPOTTERS REPORTED 0.75 TO 1.00 INCH OF RAIN IN LESS
THAN 30 MINUTES. MANY AREAS OF SOUTHEAST DENVER WERE
FLOODED...INCLUDING I-25 WHERE UP TO 6 FEET OF WATER
FILLED SOME UNDERPASSES. HAIL TO 3/4 INCH IN DIAMETER
FELL IN AURORA.
IN 1995...A TORNADO TOUCHED DOWN BRIEFLY IN AN OPEN FIELD
NEAR STRASBURG. THUNDERSTORM WINDS GUSTED TO 58 MPH AT
CENTENNIAL AIRPORT.
IN 1996...STRONG THUNDERSTORM WINDS DAMAGED THE BUILDING OF
A TELEPHONE INSTALLATION COMPANY IN THE CITY OF DENVER.
IN 1998...THE HIGH TEMPERATURE REACHED 100 DEGREES AT
DENVER INTERNATIONAL AIRPORT.
IN 2006...HEAVY RAINFALL IN THE OVERLAND WILDFIRE BURN AREA
CAUSED MINOR FLASH FLOODING IN JAMESTOWN. THE ROADS BEHIND
THE JAMESTOWN FIRE HALL WERE WASHED OUT...WHEN A CULVERT WAS
BLOCKED BY DEBRIS. A ROCKSLIDE WAS ALSO REPORTED IN TOWN.
IN 2009...A SEVERE THUNDERSTORM PRODUCED DAMAGING WINDS...LARGE
HAIL AND VERY HEAVY RAIN ACROSS THE WESTERN AND SOUTHERN
SUBURBS OF DENVER. WIDESPREAD DAMAGE WAS OBSERVED IN THE
CITIES OF ARVADA...LAKEWOOD AND WHEAT RIDGE. THE INTENSE
STRAIGHTLINE WINDS WERE THE RESULT OF A WET MICROBURST WHICH
DOWNED HUNDREDS OF TREES AND SNAPPED POWER POLES. WIND
GUSTS TO 80 MPH WERE REPORTED ALONG WITH HAIL UP TO 1 3/4
INCHES IN DIAMETER. THE COMBINATION OF WIND AND HAIL
CAUSED WIDESPREAD DAMAGE TO HOMES AND VEHICLES. THE DAMAGE
CLAIM ESTIMATES TOTALED 350 MILLION DOLLARS; ABOUT 32900
CLAIMS WERE FILED FOR HOMES...WHILE ANOTHER 19500 CLAIMS
WERE FILED FOR VEHICLES. AS MANY AS 90000 HOMES AND
BUSINESSES WERE LEFT WITHOUT POWER. IN SOME AREAS IT TOOK
UP TO 3 DAYS TO COMPLETELY RESTORE ELECTRICAL SERVICE.
MINOR INJURIES WERE REPORTED FROM BROKEN GLASS DURING THE
STORM...BUT NO ONE WAS HOSPITALIZED. THE STORM CRIPPLED THE
COMPUTERS AT THE COLORADO CRIME INFORMATION CENTER IN
LAKEWOOD FOR NEARLY 3 HOURS. ONE WEAK TORNADO TOUCHED DOWN
NEAR PARKER BUT DID NO DAMAGE. IN SOUTHERN WELD COUNTY...
SEVERE THUNDERSTORMS PRODUCED WIDEPREAD DAMAGE OVER 150
SQUARE MILES OF FARMLAND. IN ALL...400 FARMS WERE DIRECTLY
IMPACTED BY SEVERE WEATHER. DAMAGE TO CROPS ALONE WAS
ESTIMATED TO 3 MILLION DOLLARS. AT DENVER INTERNATIONAL
AIRPORT...A PEAK WIND GUST TO 48 MPH WAS OBSERVED FROM THE
NORTHEAST. IN ADDITION...1.01 INCHES WAS MEASURED AT THE
AIRPORT.
IN 2013...SEVERE THUNDERSTORMS PRODUCED LARGE HAIL...RANGING IN
SIZE FROM NICKEL TO GOLFBALL...ACROSS PORTIONS OF ARAPAHOE...
DENVER...ELBERT AND WELD COUNTIES. IN ADDITION...DAMAGING WIND
GUSTS TO 60 MPH SNAPPED LARGE TREE BRANCHES IN THORNTON AND
3 MILES WEST-SOUTHWEST OF BUCKLEY AFB. IN BENNETT...HAIL UP
TO 1 1/2 INCHES IN DIAMETER WAS REPORTED. AT DENVER
INTERNATIONAL AIRPORT...A PEAK WIND GUST TO 58 MPH WAS
RECORDED FROM THE NORTHEAST.
IN 2017...A SEVERE THUNDERSTORM NORTH OF ELIZABETH PRODUCED HAIL
UP TO 1 INCH IN DIAMETER. THE HAIL COMPLETELY COVERED THE
GROUND.
IN 2019...A SEVERE THUNDERSTORM PRODUCED A WIND GUST TO 60 MPH
AT CENTENNIAL AIRPORT. A THUNDERSTORMS PRODUCED A FLASH FLOOD
IN SOUTHERN JEFFERSON AND SOUTHWEST DENVER COUNTIES. THE
FLOODING WAS PARTICULARLY BAD ON SOUTHBOUND I-25 NEAR 6TH
AVENUE. ONE WOMAN WAS RESCUED BY A PASSERBY IN LAKEWOOD WHEN
FLOODWATERS BEGAN POURING INTO HER CAR NEAR CASA BONITA. STANDING
WATER UP TO 3 FEET DEEP WAS OBSERVED ON OTHER STREETS IN LAKEWOOD.
A HOMELESS WOMAN DROWNED NEAR WEST 12TH AVENUE AND MILLER
STREET WHEN SHE WAS SWEPT AWAY IN THE FLOODWATERS. HER BODY
WAS RECOVERED THE FOLLOWING DAY.
20-23 IN 1961...FROM THE 20TH TO THE 23RD...UNUSUALLY COOL WEATHER FOR
JULY RESULTED IN SEVERAL TEMPERATURE RECORDS. RECORD
MINIMUM TEMPERATURES WERE SET OR EQUALED ON EACH DAY WITH
READINGS OF 51...51...49 AND 49 DEGREES. HIGH TEMPERATURE OF
ONLY 64 DEGREES ON THE 21ST WAS A RECORD LOW MAXIMUM FOR THE
DATE.
20-25 IN 1965...FROM THE 20TH TO THE 25TH...HEAVY SHOWERS AND
THUNDERSTORMS DOUSED METRO DENVER WITH SIGNIFICANT RAIN EACH
DAY. RAINFALL FOR THE SIX DAYS TOTALED 5.16 INCHES AT
STAPLETON INTERNATIONAL AIRPORT. MASSIVE RAINFALL OCCURRED
ON THE 20TH...21ST...AND 25TH...FLOODING STREETS AND BASEMENTS
AND CAUSING STREAMS TO OVERFLOW. THE HEAVIEST RAINFALL...
2.05 INCHES...AT STAPLETON INTERNATIONAL AIRPORT OCCURRED ON
THE 25TH.
21 IN 1879...LIGHTNING STRUCK A HOUSE IN NORTH DENVER. THE BOLT
STRUCK THE CENTER OF THE ROOF DRIVING PART OF IT INTO THE
HOUSE AND SCATTERED SHINGLES ALL OVER THE YARD. FURNITURE
IN THE HOUSE WAS HEAVILY DAMAGED...BUT NONE OF THE THE NINE
RESIDENTS WERE INJURED OTHER THAN BEING STUNNED. THE NOISE
SOUNDED AS IF A CANNON HAD BEEN EXPLODED. RAINFALL WAS ONLY
0.02 INCH DOWNTOWN.
IN 1921...NORTHWEST WINDS WERE SUSTAINED TO 42 MPH WITH GUSTS
TO 48 MPH.
IN 1943...A SEVERE THUNDERSTORM DURING THE EVENING CAUSED THE
DEATH OF A MAN WHOSE TRUCK SKIDDED ON A MUDDY ROADWAY ON
A STEEP HILL AND OVERTURNED PINNING HIM UNDERNEATH. SEVERAL
SMALL FIRES WERE STARTED BY THE LIGHTNING...AND ELECTRICAL
WIRES WERE DOWNED. NO SERIOUS PROPERTY DAMAGE WAS REPORTED...
BUT FIREMEN ANSWERED 19 ALARMS IN 2 HOURS. ONE PERSON WAS
INJURED BY LIGHTNING.
IN 1965...A FUNNEL CLOUD WAS SIGHTED IN THE NORTHERN PORTION OF
DENVER. LATER...4 OR 5 FUNNEL CLOUDS WERE SIGHTED ABOUT 15
MILES NORTH OF STAPLETON INTERNATIONAL AIRPORT. HEAVY RAIN
ACCOMPANIED BY HAIL WASHED AWAY PART OF A CITY STREET AND
CAUSED OTHER FLOODING IN CENTRAL CITY. THERE WERE HEAVY
SHOWERS AND SOME DAMAGE FROM LIGHTNING IN BOTH DENVER AND
BOULDER. MARBLE TO GOLF BALL SIZE HAIL FELL 10 MILES
NORTHWEST OF STAPLETON AIRPORT.
IN 1966...HEAVY THUNDERSTORM RAINS FLOODED STREETS AND
BASEMENTS ACROSS METRO DENVER.
IN 1973...A TORNADO TOUCHED DOWN BRIEFLY 2 MILES NORTHEAST
OF PARKER...CAUSING MINOR DAMAGE. FUNNEL CLOUDS WERE ALSO
SIGHTED 3 MILES NORTHEAST OF SEDALIA...11 MILES SOUTH
SOUTHEAST OF STAPLETON INTERNATIONAL AIRPORT...AND NEAR
PARKER. HAIL TO 3/4 INCH IN DIAMETER FELL OVER THE WESTERN
SUBURBS OF DENVER.
IN 1974...HEAVY THUNDERSTORM RAINS CAUSED FLASH FLOODING IN
METRO DENVER. RAINFALL TOTALED 1.26 INCHES AT STAPLETON
INTERNATIONAL AIRPORT.
IN 1976...HEAVY THUNDERSTORM RAINS OCCURRED ACROSS SOUTH METRO
DENVER WITH 1.75 INCHES OF RAIN RECORDED IN 40 MINUTES
IN SOUTHEAST AURORA AND 2.00 INCHES IN 20 MINUTES AT CHERRY
CREEK RESERVOIR. A FUNNEL CLOUD WAS SIGHTED BY THE PUBLIC
EAST OF ARAPAHOE COUNTY AIRPORT...NOW CENTENNIAL AIRPORT.
IN 1981...THE TEMPERATURE REACHED 100 DEGREES...SETTING A NEW
RECORD HIGH FOR THE DATE.
IN 1983...DOWNPOURS DRENCHED THE FRONT RANGE WHERE AMOUNTS OF
1 TO 2 INCHES WERE COMMON. THE HEAVIEST REPORTED RAINFALL
WAS 2.36 INCHES IN A 6-HOUR PERIOD AT PARKER WHERE HAIL TO
3/4 INCH AND WIND GUSTS AS HIGH AS 75 MPH OCCURRED. UP TO
GOLF BALL SIZE HAIL FELL IN THE PARKER AND CASTLE ROCK AREAS;
WIND GUSTS TO 75 MPH WERE RECORDED IN CASTLE ROCK.
IN 1993...THUNDERSTORM WINDS TOPPLED A 3 STORY HIGH RUSSIAN
OLIVE TREE IN BOULDER. THE TREE BARELY HIT AND ONLY
SLIGHTLY DAMAGED A PARKED CAR.
IN 1995...THUNDERSTORM WINDS FROM THE WEST GUSTED TO 55 MPH
AT DENVER INTERNATIONAL AIRPORT.
IN 2002...HEAVY THUNDERSTORM RAINFALL CAUSED FLASH FLOODING
IN THE HAYMAN FIRE BURN AREA. SOUTH DECKERS ROAD...STATE
HIGHWAY 126...WAS CLOSED WHEN 4 FEET OF WATER INUNDATED
A SECTION OF THE ROADWAY. THE U.S. FOREST SERVICE HAD
TO REMOVE 40 TRUCK LOADS OF SEDIMENT TO REOPEN THE ROAD.
ALSO...HEAVY DEBRIS FLOW WASHED OUT A SECONDARY SERVICE
ROAD IN SOUTHWEST DOUGLAS COUNTY. HAIL AS LARGE AS 3/4
INCH IN DIAMETER FELL NEAR BENNETT.
IN 2011...LIGHTNING STRUCK A HOME IN ARAPAHOE COUNTY AND
CAUSED SUBSTANTIAL FIRE DAMAGE. FIVE PEOPLE WERE IN THE
HOME BUT NO ONE WAS INJURED. THERE WAS STRUCTURAL DAMAGE
TO BOTH THE INTERIOR AND EXTERIOR OF THE RESIDENCE.
22 IN 1874...A SEVERE THUNDERSTORM DURING THE LATE AFTERNOON
PRODUCED 1.36 INCHES OF RAINFALL IN AN HOUR...MOST OF WHICH
FELL IN 20 MINUTES. THERE WAS MUCH DAMAGE FROM FLOODING
OF STREETS AND CONSIDERABLE DAMAGE TO PRIVATE PROPERTY.
THE LIGHTNING WAS BRILLIANT AND CONTINUOUS DURING THE
STORM. SEVEN BUILDINGS WERE STRUCK BY LIGHTNING IN THE
CITY...IN ADDITION TO MANY PLACES WHERE IT STRUCK ONLY THE
GROUND. A MAGNIFICENT EXAMPLE OF BALL LIGHTNING WAS
OBSERVED. WHEN ABOUT 200 FEET ABOVE THE HOUSE TOPS...THE
BALL EXPLODED AND BROKE INTO 7 OR 8 DIFFERENT BALLS...EACH
ABOUT 6 INCHES IN DIAMETER. UPON REACHING ABOUT 20 FEET
ABOVE THE GROUND...THESE BALLS BROKE INTO SMALL FRAGMENTS
ABOUT 3 INCHES LONG AND 1/2 INCH WIDE. A SHED SITUATED
IN AN ALLEY ABOUT ONE BLOCK AWAY WAS LITERALLY COVERED
WITH THESE SPARKS. AFTER THE STORM WAS OVER...THE SHED
AND ADJACENT AREA SHOWED NO TRACE OF THE EVENT. NOT THE
SLIGHTEST MARK COULD BE DETECTED ON STRUCTURES OR ON THE
GROUND.
IN 1879...A TERRIFIC ELECTRICAL STORM PASSED OVER THE CITY
DURING THE AFTERNOON. THE LIGHTNING DISPLAY WAS UNUSUALLY
VIVID AND THE CRASH OF THUNDER SEEMED AT THE VERY HOUSE
TOPS. A FEW HOMES AND BUILDINGS WERE STRUCK BY LIGHTNING.
A HOME ON CAPITOL HILL SUSTAINED MUCH DAMAGE TO FURNITURE...
BUT THE RESIDENTS IN ANOTHER WING OF THE HOUSE WERE NOT
INJURED. LIGHTNING STRUCK A FENCE AT THE CORNER OF CURTIS
AND BROADWAY. A LIGHTNING BOLT STUNNED A WORKMAN AND
KNOCKED A MASON'S TROUGH FROM HIS HAND. A SCHOOL WAS STRUCK
BUT WAS NOT DAMAGED. LIGHTNING STRUCK THE GROUND NEAR
TENTH AND COLFAX. RAIN FELL IN TORRENTS FOR A TIME...BUT THE
HEAVIEST WAS ON THE OUTSKIRTS OF THE CITY. RAINFALL IN THE
CITY WAS ONLY 0.30 INCH.
IN 1882...LIGHTNING STRUCK AND KILLED A MAN IN THE NORTHERN
PART OF THE CITY.
IN 1895...HEAVY RAINFALL OF 1.53 INCHES WAS MEASURED IN
DOWNTOWN DENVER.
IN 1931...THE HIGH TEMPERATURE REACHED 100 DEGREES IN
DOWNTOWN DENVER.
IN 1965...LIGHTNING STRUCK AND KILLED A BOY STANDING BY AN
AUTOMOBILE NEAR STAPLETON INTERNATIONAL AIRPORT. SCATTERED
HEAVY SHOWERS ACCOMPANIED BY HAIL AND WIND OCCURRED ACROSS
METRO DENVER. HEAVY RAIN CAUSED SOME STREET DAMAGE IN
COMMERCE CITY.
IN 1973...MINOR THUNDERSTORM WIND DAMAGE WAS REPORTED IN
AURORA.
IN 1983...HEAVY THUNDERSTORMS DUMPED TORRENTIAL RAIN AND LARGE
HAIL ACROSS METRO DENVER. THE MOST SERIOUS PROBLEMS WERE
CAUSED BY HEAVY RAINFALL IN THE FOOTHILLS...WHICH PRODUCED
FLOODING ON BEAR CREEK. RUNOFF FROM 3 INCHES OF RAIN IN
45 MINUTES AT KITTREDGE CAUSED BEAR CREEK TO RISE 5 FEET IN
10 MINUTES AT MORRISON...WASHING OUT TWO BRIDGES. ONE BRIDGE
COLLAPSED...PLUNGING A FIRE TRUCK INTO THE WATER...BUT THE
OCCUPANTS WERE NOT INJURED. THE TOWN WAS EVACUATED FOR 2
HOURS. EVERGREEN WAS DRENCHED WITH 2.61 INCHES OF RAIN IN
30 MINUTES...WHICH CAUSED STREET FLOODING ALONG WITH POWER
OUTAGES. HAIL TO GOLF BALL SIZE DAMAGED CARS. A DECK ON A
HOUSE EAST OF EVERGREEN WAS WASHED AWAY. AT IDAHO SPRINGS...
2 INCHES OF RAIN FELL IN 45 MINUTES. GOLDEN RECEIVED
3 INCHES OF RAIN IN AN HOUR WITH 0.80 INCH OF RAIN IN SEVEN
MINUTES AT LITTLETON. HEAVY RAIN AND LARGE HAIL ALSO FELL
IN THE CITY OF DENVER AND ITS NORTHERN AND EASTERN SUBURBS...
CAUSING STREET FLOODING. WATER WAS 6 FEET DEEP ON ONE
AURORA STREET.
IN 1991...HEAVY RAINS CAUSED EXTENSIVE FLOODING ACROSS NORTH
METRO DENVER. RALSTON CREEK IN ARVADA FLOWED OUT OF
ITS BANKS. AT THE INTERSECTION OF I-25 AND I-70...UP TO 8
FEET OF WATER COVERED THE HIGHWAY. A FOOT OF WATER COVERED
A STRETCH OF I-70 IN NORTHWEST DENVER. THUNDERSTORM
RAINFALL TOTALED ONLY 0.82 INCH AT STAPLETON INTERNATIONAL
AIRPORT.
IN 1998...LIGHTNING SPARKED A FIRE WHICH CAUSED EXTENSIVE
DAMAGE TO A HOME IN ENGLEWOOD. MOST OF THE SECOND FLOOR
WAS DESTROYED.
IN 2004...SEVERE THUNDERSTORMS PRODUCED HAIL TO 1.25 INCHES
IN DIAMETER IN COMMERCE CITY AND NEAR BRIGHTON.
IN 2019...SEVERE THUNDERSTORMS PRODUCED HAIL UP TO 1 INCH IN
DIAMETER...AND INTENSE THUNDERSTORM WINDS IN ARAPAHOE...
DENVER AND WELD COUNTIES. A STRONG THUNDERSTORM PRODUCED
7/8 INCH DIAMETER HAIL IN DOUGLAS COUNTY. AT DENVER
INTERNATIONAL AIRPORT...A WET MICROBURST THAT FORMED OVER
THE AIRFIELD PRODUCED A PEAK WIND GUST TO 79 MPH ALONG
WITH 1.10 INCHES OF RAINFALL AND SMALL HAIL.
22-23 IN 1991...FROM THE 22ND INTO THE 23RD...HEAVY RAINS OVER THE
PALMER DIVIDE AND ALONG THE FRONT RANGE CAUSED THE SOUTH
PLATTE RIVER TO FLOOD FROM NEAR HENDERSON TO FORT LUPTON.
THE RIVER WAS OUT OF ITS BANKS AT SEVERAL LOCATIONS WITH
WATER COVERING THE ROADS THROUGH THE NIGHT. ONLY MINOR
DAMAGE WAS REPORTED.
23 IN 1901...THE TEMPERATURE CLIMBED TO A HIGH OF 90 DEGREES...
MARKING THE 18TH CONSECUTIVE DAY WITH A HIGH TEMPERATURE
OF 90 DEGREES OR MORE. THIS EQUALED THE RECORD OF 18
CONSECUTIVE DAYS SET FROM JULY 1ST THROUGH JULY 18TH IN
1874.
IN 1910...THE TEMPERATURE CLIMBED TO A HIGH OF 101 DEGREES
IN DOWNTOWN DENVER.
IN 1936...THE HIGH TEMPERATURE REACHED 100 DEGREES IN
DOWNTOWN DENVER.
IN 1957...A TORNADO WAS OBSERVED BY NATIONAL WEATHER SERVICE
PERSONNEL 25 MILES EAST-NORTHEAST OF STAPLETON AIRPORT FOR
7 MINUTES. NO PROPERTY DAMAGE OR INJURIES WERE REPORTED.
THE PUBLIC REPORTED A FUNNEL CLOUD 10 MILES NORTHEAST OF
BRIGHTON.
IN 1960...LIGHTNING STRUCK MANY LOCATIONS ACROSS METRO DENVER.
A BOY SCOUT LEADER WAS STRUCK AND INJURED AT THE ROCKY
MOUNTAIN ARSENAL. SOME SECTIONS OF ARVADA WERE BLANKETED
WITH A WHITE LAYER OF HAILSTONES. A NUMBER OF WEED FIRES
WERE STARTED BY LIGHTNING. SOME HOUSES WERE STRUCK...BUT NO
SERIOUS DAMAGE OCCURRED. HEAVY RAIN FELL FROM NORTHWEST
DENVER TO BRIGHTON WITH UP TO 1.50 INCHES IN SOME AREAS.
IN 1965...HEAVY RAIN FLOODED AND DAMAGED HOMES IN GEORGETOWN...
WHERE THE SEWER SYSTEM WAS DAMAGED AND THE WATER SUPPLY
CONTAMINATED. HEAVY RAINS IN AURORA WASHED OUT EARTHEN
BRIDGES OVER SAND CREEK. STREETS WERE FLOODED IN DENVER.
SEVERAL HIGHWAYS WERE WASHED OUT TO THE EAST AND SOUTHEAST
OF DENVER.
IN 1975...HEAVY RAINS CAUSED FLASH FLOODING IN THE FOOTHILLS
WEST OF DENVER. SEVERAL ROADS AND BUSINESSES WERE DAMAGED
IN THE CENTRAL CITY AND BLACKHAWK AREAS.
IN 1983...HEAVY THUNDERSTORMS BLASTED DENVER AND AREAS TO THE
SOUTH. DOUGLAS COUNTY WAS HARDEST HIT. GOLF BALL SIZE HAIL
FELL IN AND NEAR PARKER. MANY HOMES AT THE PINERY SOUTH OF
PARKER HAD WINDOWS BROKEN AND PAINT STRIPPED BY THE STORM
WITH SOME VEHICLES DENTED BY THE LARGE STONES. IN PARKER...
1.90 INCHES OF RAIN FELL IN JUST 30 MINUTES. MANY ROADS IN
DOUGLAS COUNTY WERE WASHED OUT...AND AT LEAST ONE BRIDGE WAS
DAMAGED. UP TO 2 INCHES OF RAIN FELL IN LAKEWOOD...AND
LITTLETON WAS DRENCHED BY 1.60 INCHES IN 15 MINUTES. A
DEPARTMENT STORE IN LAKEWOOD SUFFERED WATER DAMAGE WHEN A
PIPE HANDLING RUNOFF BROKE...SENDING 4 INCHES OF WATER ONTO
THE FLOOR OF THE STORE.
IN 1990...A THUNDERSTORM WIND GUST TO 53 MPH WAS RECORDED AT
STAPLETON INTERNATIONAL AIRPORT...WHERE 1/8 INCH DIAMETER
HAIL FELL.
IN 1992...HEAVY THUNDERSTORM RAINS CAUSED HOWARD GULCH IN
SOUTHEAST DENVER TO FLOW OVER ITS BANKS. A WEATHER SPOTTER
RECORDED THUNDERSTORM WIND GUSTS TO 63 MPH IN AURORA.
ANOTHER SPOTTER MEASURED A WIND GUST TO 60 MPH...WHICH
TOPPLED A LARGE TREE. THUNDERSTORM WINDS GUSTED TO ONLY
41 MPH AT STAPLETON INTERNATIONAL AIRPORT.
IN 1996...HAIL...AS LARGE AS AN INCH IN DIAMETER...FELL 5 MILES
WEST OF CASTLE ROCK.
IN 1997...DAMAGING THUNDERSTORM WINDS ASSOCIATED WITH A WET
MICROBURST RIPPED THE ROOF OFF A BARN NEAR BRIGHTON...
CAUSING THE EAST SIDE OF THE STRUCTURE TO COLLAPSE. THE
ROOF OF A NEARBY UTILITY SHED WAS ALSO LIFTED OFF AND BLOWN
60 FEET AWAY. WEST WINDS GUSTED TO 38 MPH AT DENVER
INTERNATIONAL AIRPORT.
IN 2001...A SEVERE THUNDERSTORM PELTED LITTLETON WITH HAIL AS
LARGE AS 1 1/2 INCHES. TOTAL DAMAGE TO VEHICLES...ROOFS...
BUILDINGS...AND LANDSCAPING TOTALED OVER 600 THOUSAND
DOLLARS. RAIN LEAKED INTO OFFICES...DAMAGING COMPUTERS.
ALMOST EVERY VEHICLE PARKED IN THE LITTLETON CENTER LOT
SUSTAINED SOME HAIL DAMAGE. THUNDERSTORM WINDS GUSTED TO
55 MPH AT DENVER INTERNATIONAL AIRPORT.
IN 2002...A SMALL TORNADO BRIEFLY TOUCHED DOWN NEAR BENNETT.
NO DAMAGE WAS REPORTED.
IN 2004...HEAVY THUNDERSTORM RAINFALL IN THE OVERLAND FIRE
BURN AREA CAUSED FLASH FLOODING IN JAMESTOWN. UP TO A FOOT
OF WATER REPORTEDLY COVERED THE HIGHWAY NEAR JAMESTOWN.
MANY OF THE TOWN'S CULVERTS FILLED WITH DIRT AND DEBRIS...
CAUSING THE OVERFLOW TO WASH ONTO STREETS AND INTO HOMES.
HEAVY MACHINERY HAD TO BE USED TO REMOVE PILES OF MUD
UP TO 7 FEET DEEP. PARKED CARS SLID DOWN THE STREET
WITH THE MUD AND WATER...AND MANY HAD TO BE DUG OUT. THE
FIRE STATION IN JAMESTOWN WAS INUNDATED WITH 10 INCHES OF
MUDDY WATER. HEAVY THUNDERSTORM RAINFALL CAUSED STREET
FLOODING IN FEDERAL HEIGHTS AND THORNTON. SEVERAL STREETS
WERE INUNDATED WITH 2 TO 4 FEET OF WATER...INCLUDING 84TH
AVENUE AND GRANT STREET...CONIFER STREET AND HURON BLVD....
102ND AVE. AND MELODY...AS WELL AS 83RD AVE. AND WASHINGTON.
SEVERAL CARS WERE STRANDED IN THE FLOOD WATERS. HEAVY
RAINFALL ALSO CAUSED STREET FLOODING IN PARTS OF WESTMINSTER.
WATER REPORTEDLY FLOWED INTO CAR WINDOWS JUST NORTH OF 104TH
AVENUE AND U.S. HIGHWAY 36. SECTIONS OF TWO ROADS HAD
TO BE CLOSED DUE TO FLOODING. HEAVY THUNDERSTORM RAINFALL
OF UP TO 2 INCHES IN 45 MINUTES CAUSED FLASH FLOODING JUST
EAST OF AURORA. FLOODWATERS RANGING FROM 2 TO 3 FEET DEEP
FORCED THE CLOSURE OF POWHATEN...GUN CLUB AND PICADILLY ROADS.
LIGHTNING CAUSED POWER OUTAGES IN PARTS OF ARVADA. ABOUT
9800 CUSTOMERS WERE WITHOUT POWER FOR UP TO 90 MINUTES.
24 IN 1896...HEAVY CLOUDBURSTS IN THE FOOTHILLS WEST OF DENVER
CAUSED FLASH FLOODING ON BEAR CREEK...CLEAR CREEK...GOLDEN
GATE GULCH...AND MOUNT VERNON CREEK...RESULTING IN A TOTAL OF
27 DEATHS. THE DOWNPOUR DISLODGED LARGE BOULDERS...ONE OF
WHICH CRUSHED A HOUSE. THE HEAVY RAIN ALSO CAUSED A DAM ON
CUB CREEK TO WASH OUT...ADDING EVEN MORE WATER TO THE FLOOD.
A WALL OF WATER AS HIGH AS 10 FEET FLOODED EVERGREEN AND
PASSED DOWN BEAR CREEK...WASHING AWAY MANY STRUCTURES ALONG
THE WAY. THE FLOOD CREST PRODUCED 3 FEET OF WATER IN
DOWNTOWN MORRISON DURING THE EARLY EVENING. FLASH FLOODING
ON MOUNT VERNON CREEK ADDED TO THE FLOODING IN MORRISON.
IN GOLDEN...THE FLOODING WASHED OUT BRIDGES ON CLEAR CREEK
AND ON CRESMAN AND TUCKER GULCHES AND FORCED THE CLOSURE OF
THE POWER PLANT. IN DENVER...A THUNDERSTORM PRODUCED HAIL
OF UNKNOWN SIZE DURING THE AFTERNOON AND RAINFALL OF 1.23
INCHES OVERNIGHT.
IN 1958...A THUNDERSTORM WIND GUST TO 52 MPH WAS RECORDED AT
STAPLETON AIRPORT.
IN 1965...HEAVY RAIN CAUSED FLOODING ON CLEAR CREEK AND TUCKER
GULCH IN GOLDEN AND WEST DENVER. DAMAGE IN GOLDEN WAS
ESTIMATED AT 80 THOUSAND DOLLARS. HEAVY RAIN SOUTH OF
DENVER WASHED OUT TEMPORARY EARTHEN BRIDGES CONSTRUCTED
FOLLOWING THE JUNE FLOODS IN CASTLE ROCK...LITTLETON...
ENGLEWOOD...AND DENVER. BEAR CREEK IN SOUTH DENVER REACHED
FLOOD STAGE. A CLOUDBURST ON CUB CREEK IN EVERGREEN WASHED
OUT BRIDGES AND ROADS. HEAVY RAIN FELL OVER ALL THE DENVER
AND AURORA AREAS...CAUSING SOME FLOODING OF ROADS...STREETS...
AND BRIDGES. A MAN DROWNED IN A FLOODED IRRIGATION CANAL
NEAR HUDSON. HEAVY RAIN CAUSED FLOODING OF STREETS AND
ROADS IN BLACKHAWK AND CENTRAL CITY. HAIL CAUSED MINOR
DAMAGE IN IDAHO SPRINGS.
IN 1967...SEVEN BRIDGES WERE WASHED OUT ALONG A NORMALLY DRY
CREEK BED SOUTH OF STATE HIGHWAY 7 WEST OF BRIGHTON. ONE
CAR WAS WASHED INTO THE CREEK WHEN A BRIDGE GAVE WAY.
IN 1970...HAIL STONES TO 1 1/4 INCHES IN DIAMETER FELL IN THE
FOOTHILLS OF JEFFERSON COUNTY SOUTHWEST OF DENVER.
IN 1971...GOLF BALL SIZE HAIL WAS REPORTED IN FOOTHILL AREAS
OF JEFFERSON COUNTY WEST OF DENVER. A FUNNEL CLOUD WAS
SIGHTED IN AURORA. WIND GUSTS ESTIMATED AT 60 MPH...HAIL...
AND HEAVY RAIN UP TO AN INCH IN 15 MINUTES CAUSED LOCAL
FLOODING AND SOME OTHER DAMAGE IN SEVERAL AREAS OF METRO
DENVER. HAILSTONES TO 3/4 INCH IN DIAMETER FELL 7 MILES
SOUTHEAST OF DENVER.
IN 1973...A THUNDERSTORM WIND GUST TO 52 MPH WAS RECORDED
AT STAPLETON INTERNATIONAL AIRPORT WHERE ONE INCH DIAMETER
HAIL WAS MEASURED.
IN 1981...STRONG WINDS DOWNED A POWER LINE IN NORTHEAST DENVER.
WIND GUSTS TO 50 MPH WERE RECORDED AT CHATFIELD RESERVOIR.
IN 1987...3/4 INCH DIAMETER HAIL FELL 5 MILES NORTHEAST OF
COMMERCE CITY.
IN 1996...HAIL...UP TO 1 3/4 INCHES IN DIAMETER...FELL AT
CHATFIELD RESERVOIR. HAIL TO 3/4 INCH IN DIAMETER WAS
MEASURED NEAR BENNETT.
IN 2000...LIGHTNING STRUCK NEAR TWO GOLFERS AT UTE CREEK GOLF
COURSE NEAR LONGMONT...KNOCKING THEM TO THE GROUND. THE
MEN RECEIVED ONLY MINOR INJURIES.
IN 2001...LIGHTNING FROM A THUNDERSTORM KNOCKED OUT ELECTRICAL
POWER TO ABOUT 1500 RESIDENTS IN THE CITY OF DENVER.
IN 2004...A CHILLY DAY WITH FOG AND THUNDERSTORMS RESULTED IN
TWO TEMPERATURE RECORDS. THE LOW TEMPERATURE OF 49 DEGREES
WAS A RECORD MINIMUM FOR THE DATE. THE HIGH TEMPERATURE OF
ONLY 58 DEGREES WAS A RECORD LOW MAXIMUM FOR THE DATE.
IN 2016...SEVERE THUNDERSTORMS PRODUCED DAMAGING STRAIGHT-LINE.
A STORM LEVELED A GREENHOUSE AND CAUSED TREE DAMAGE NEAR
BYERS. A PEAK WIND GUST TO 74 MPH WAS MEASURED AT DENVER
INTERNATIONAL AIRPORT.
IN 2018...THUNDERSTORMS PRODUCED VERY HEAVY RAINFALL...1 TO 2
INCHES IN LESS THAN 30 MINUTES. IN ENGLEWOOD...THE FLOODWATERS
QUICKLY INUNDATED A BASEMENT APARTMENT AND TRAPPED A WOMAN
INSIDE. SHE WAS FOUND UNRESPONSIVE IN THE APARTMENT AND DIED
SEVERAL HOURS LATER. SEVERAL HOMES IN THE IMMEDIATE AREA
SUFFERED SEVERE FLOOD DAMAGE. THE FLOODWATERS ALSO STALLED
VEHICLES AND FORCED THE CLOSURE OF SEVERAL INTERSECTIONS. IN
SHERIDAN...THE HEAVY RAIN CREATED A LARGE SINKHOLE WHICH
SWALLOWED A SMALL SUV. A DOWNED POWER LINE CAUSED A FIRE IN
ARAPAHOE COUNTY.
IN 2023...SEVERE THUNDERSTORMS PRODUCED VERY STRONG WIND GUSTS
OVER PARTS OF ADAMS...DENVER AND WELD COUNTIES. PEAK GUSTS
INCLUDED: 68 MPH NEAR COMMERCE CITY...63 MPH...16 MILES EAST-
NORTHEAST OF DENVER INTERNATIONAL AIRPORT; AND 58 MPH...13 MILES
NORTHEAST OF D.I.A. AND 8 MILES NORTH-NORTHEAST OF FRONT
RANGE AIRPORT.
24-25 IN 2003...MAXIMUM TEMPERATURE OF 100 DEGREES ON THE 24TH WAS A
RECORD HIGH FOR THE DATE. LOW TEMPERATURE OF 73 DEGREES
ON THE 25TH WAS A RECORD HIGH MINIMUM FOR THE DATE.
25 IN 1875...BRIEF HEAVY RAIN AND HAIL LASTED ONLY 5 MINUTES...
BUT THE 1/4 INCH DIAMETER HAIL COVERED THE GROUND TO A
DEPTH OF 1/2 INCH AND MADE THE STREETS LOOK LIKE THERE
HAD BEEN SNOWFALL. THERE WAS MUCH CROP DAMAGE...ESPECIALLY
TO CORN...AND SOME SHEEP WERE KILLED. PRECIPITATION TOTALED
0.51 INCH IN THE CITY.
IN 1896...A HEAVY THUNDERSTORM PRODUCED SUSTAINED NORTHWEST
WINDS TO 45 MPH WITH GUSTS TO 50 MPH AND 1.02 INCHES OF
RAIN.
IN 1965...A CLOUDBURST DUMPED 1.99 INCHES OF RAIN IN 30
MINUTES AT STAPLETON INTERNATIONAL AIRPORT. THE STORM WAS
ACCOMPANIED BY STRONG WINDS GUSTING TO 70 MPH. THE HEAVY
RAIN FLOODED NUMEROUS STREETS IN EAST DENVER AND AURORA.
ONE INCH DIAMETER HAIL ACCOMPANIED A CLOUDBURST...9 MILES
SOUTHWEST OF DENVER. A FUNNEL CLOUD WAS SIGHTED 25 MILES
NORTHWEST OF DENVER. IN AURORA...THERE WERE UNOFFICIAL
REPORTS OF 2.30 INCHES OF RAIN IN 40 MINUTES AND 3.30
INCHES OF RAIN IN 30 TO 40 MINUTES. RAINFALL TOTALED 2.05
INCHES AT STAPLETON INTERNATIONAL AIRPORT. RAINFALL OF
2.42 INCHES FOR 24 HOURS ON THE 24TH AND 25TH WAS THE
SECOND GREATEST ON RECORD FOR JULY.
IN 1977...A TORNADO TOUCHED DOWN BRIEFLY IN AURORA SOUTHEAST
OF CHERRY CREEK RESERVOIR. NO DAMAGE WAS REPORTED.
A FUNNEL CLOUD WAS SIGHTED FOR 4 MINUTES BY NATIONAL
WEATHER SERVICE PERSONNEL 10 MILES NORTH OF STAPLETON
INTERNATIONAL AIRPORT NEAR HENDERSON.
IN 1991...HEAVY RAIN...UP TO HALF AN INCH IN 10 MINUTES...CAUSED
FLOODING IN WESTMINSTER...NORTHGLENN...AND NORTH DENVER WHERE
A SECTION OF RAILROAD TRACK WAS WASHED AWAY. AT STAPLETON
INTERNATIONAL AIRPORT...HEAVY THUNDERSTORM RAIN TOTALED 1.85
INCHES AND BRIEFLY REDUCED THE VISIBILITY TO 1/4 MILE.
HAIL TO 1/8 INCH IN DIAMETER WAS ALSO MEASURED. A TORNADO
TOUCHED DOWN BRIEFLY NEAR FORT LUPTON. NO DAMAGE WAS
REPORTED.
IN 1998...HEAVY MONSOONAL THUNDERSTORM RAINS CAUSED FLOODING
AND FLASH FLOODING IN EASTERN AND SOUTHERN SECTIONS OF
METRO DENVER...INCLUDING ENGLEWOOD AND AURORA...WHEN ABOUT 2
TO 3 INCHES OF RAIN INUNDATED THE AREA. BOTH I-25 AND I-70
WERE CLOSED FOR 2 TO 3 HOURS AS SEVERAL LOW LYING AREAS
BECAME IMPASSABLE DUE TO THE HIGH WATERS. THE WATER WAS
ESTIMATED TO BE 15 FEET DEEP IN ONE FLOODED UNDERPASS ALONG
I-25. AS A RESULT...THE FREEWAY WAS CLOSED FROM SOUTH OF
6TH AVENUE TO UNIVERSITY BLVD. STANDING WATER FORCED THE
CLOSURE OF I-70 AT GUN CLUB ROAD EAST OF DENVER. IN
ENGLEWOOD...U.S. HIGHWAY 285 WAS CLOSED...WHEN HIGH WATER
MADE IT IMPASSABLE. SEVERAL CARS WERE REPORTEDLY FLOATING
DOWN THE ROADWAY NEAR SHERIDAN BLVD. IN AURORA...THE
INTERSECTION AT YALE AVE. AND CHAMBERS RD. WAS FLOODED BY
HIGH WATER UP TO 4 FEET DEEP WHEN A SPILLWAY ON THE HIGH
LINE CANAL WAS BREACHED. LIGHTNING ALSO KNOCKED OUT 11
TRANSFORMERS ACROSS METRO DENVER...CAUSING SEVERAL SMALL
FIRES AND SCATTERED POWER OUTAGES. FLOOD AND FLASH
FLOODING ALSO OCCURRED NORTH OF STRASBURG WHEN AS MUCH
AS 2.51 INCHES OF RAIN FELL IN AN HOUR. THE DELUGE
RESULTED IN CONSIDERABLE FLOODING OF LOCAL STREETS AND
COUNTY ROADS. TORRENTIAL RAINFALL OF 2 TO 3 INCHES IN
LESS THAN AN HOUR TRIGGERED A FLASH FLOOD IN VIRGINIA
CANYON. COUNTY ROAD 279 BETWEEN IDAHO SPRINGS AND
CENTRAL CITY WAS CLOSED FOR TWO DAYS TO CLEAR DEBRIS
FROM MUDSLIDES. SEVERAL CARS IN IDAHO SPRINGS WERE
WASHED OFF THE ROAD...AND NUMEROUS BASEMENTS WERE FLOODED
IN TOWN. THUNDERSTORM RAINFALL TOTALED 2.69 INCHES AT
DENVER INTERNATIONAL AIRPORT.
IN 2001...LIGHTNING STRUCK TWO HOMES IN LAFAYETTE...DAMAGING
THE ROOF AND ATTIC OF ONE AND SHORTING OUT THE ELECTRICAL
SYSTEM IN ANOTHER. HAIL TO 1 3/4 INCH IN DIAMETER WAS
MEASURED 7 MILES NORTH OF CASTLE ROCK WITH 3/4 INCH HAIL
7 MILES NORTH OF SEDALIA.
IN 2005...HEAVY THUNDERSTORM RAIN IN THE VICINITY OF THE
OVERLAND WILDFIRE BURN SCAR TRIGGERED A MUDSLIDE IN
JAMESTOWN. ROCKS THE SIZE OF BOWLING BALLS...ALONG WITH
SILT AND MUD SLID DOWN THE MOUNTAIN INTO THE TOWN. NO ONE
WAS INJURED. ONE PARKED CAR WAS BURIED BY THE DEBRIS.
IN 2006...HEAVY THUNDERSTORM RAINFALL CAUSED FLASH FLOODING
1 MILE NORTH OF THE TOWN OF WESTCREEK IN SOUTHWESTERN
DOUGLAS COUNTY. SEVERAL MAINTENANCE ROADS WERE WASHED OUT
BY THE FLOODWATERS.
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