541
NOUS45 KBOU 290045
PNSBOU
COZ030>051-292300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
645 PM MDT SAT JUN 28 2025
..THIS WEEK IN METRO DENVER WEATHER HISTORY
29 IN 1874...EIGHT DIFFERENT FIRES IN MOUNTAIN FORESTS WERE
VISIBLE FROM THE CITY. ALL OF THE FIRES WERE EXTENSIVE...
AND THE VOLUME OF SMOKE FROM EACH WAS IMMENSE. THREE OF
THESE FIRES HAD BEEN BURNING FROM THE 18TH WITH VARIED
INTENSITY.
IN 1911...AN APPARENT DRY MICROBURST PRODUCED SUSTAINED WINDS
TO 45 MPH.
IN 1960...A STRONG GUST OF WIND BLEW A SMALL FOREIGN SEDAN OFF
THE HIGHWAY NEAR BRIGHTON...INJURING THE DRIVER. EAST WINDS
GUSTED TO 40 MPH AT STAPLETON AIRPORT.
IN 1961...THUNDERSTORM WINDS ESTIMATED AS HIGH AS 40 TO 50 MPH
OCCURRED OVER SOUTHEAST DENVER. NO SIGNIFICANT DAMAGE WAS
REPORTED.
IN 1962...HEAVY RAIN AND SMALL HAIL CAUSED SOME FLOODING IN
SOUTHWEST DENVER.
IN 1995...UPSLOPE CLOUDINESS WITH RAIN AND FOG COOLED
TEMPERATURES TO RECORD LEVELS. LOW TEMPERATURE OF 47
DEGREES EQUALED THE RECORD FOR THE DATE. HIGH TEMPERATURE
OF ONLY 54 DEGREES SET A NEW RECORD LOW MAXIMUM FOR THE
DATE. RAINFALL TOTALED 0.90 INCH AT DENVER INTERNATIONAL
AIRPORT AND 0.41 INCH AT THE SITE OF THE FORMER STAPLETON
INTERNATIONAL AIRPORT.
IN 2003...A SEVERE THUNDERSTORM IN PARKER PRODUCED HAIL TO
1 INCH IN DIAMETER.
IN 2011...TWO AIRMEN FROM THE COLORADO NATIONAL GUARD
SUFFERED MINOR INJURIES WHEN THEY WERE STRUCK BY LIGHTNING.
THEY WERE HIT WHILE ON DUTY AT A FLIGHT LINE AT BUCKLEY
AIR FORCE BASE. AT DENVER INTERNATIONAL AIRPORT...A
MICROBURST PRODUCED A PEAK WIND GUST TO 72 MPH.
IN 2022...A SEVERE THUNDERSTORM PRODUCED AN ISOLATED BUT
INTENSE MICROBURST WITH A PEAK WIND GUST OF 74 MPH EAST
OF CENTENNIAL NEAR SMOKY HILL. AT DENVER INTERNATIONAL
AIRPORT...A PEAK GUST TO 34 MPH WAS OBSERVED FROM THE
NORTHWEST. BLOWING DUST BRIEFLY REDUCED THE VISIBILITY TO
ONE HALF OF A MILE...ALONG WITH 0.05 INCH RAINFALL.
29-2 IN 1990...ALMOST A YEAR TO DATE AFTER THE RECORD BREAKING HEAT
IN EARLY JULY 1989...THE THIRD LONGEST HEAT WAVE IN DENVER
HISTORY STARTED. FROM JUNE 29TH THROUGH JULY 2ND THE
TEMPERATURE REACHED 100 DEGREES OR MORE ON FOUR CONSECUTIVE
DAYS. THE HIGHEST READING OF 102 DEGREES OCCURRED ON THE
29TH...30TH...AND 1ST. COMBINED WITH THE 102 DEGREE READING
ON JUNE 27TH THIS WOULD HAVE BEEN THE LONGEST HEAT WAVE ON
RECORD...BUT THE TEMPERATURE CLIMBED TO ONLY 98 DEGREES ON
JUNE 28TH.
29-15 IN 2000...THE 29TH MARKED THE BEGINNING OF A NEAR RECORD HOT
STREAK FOR METRO DENVER. THE HIGH TEMPERATURES...AS RECORDED
AT DENVER INTERNATIONAL AIRPORT...EXCEEDED THE 90 DEGREE MARK
FOR 17 CONSECUTIVE DAYS FROM JUNE 29TH THROUGH JULY 15TH.
THE RECORD OF 24 CONSECUTIVE 90 DEGREE OR ABOVE DAYS WAS
SET FROM JULY 13TH THROUGH AUGUST 5TH...2008.
30 IN 1879...DENSE SMOKE FROM MOUNTAIN FOREST FIRES COVERED THE
CITY AND OBSCURED THE SUN AS IT SET BEHIND THE MOUNTAINS.
IN 1900...A THUNDERSTORM PRODUCED NORTHWEST WINDS TO 44 MPH
WITH GUSTS TO 58 MPH...BUT ONLY A TRACE OF RAIN.
IN 1917...NORTH WINDS WERE SUSTAINED TO 47 MPH WITH GUSTS TO
52 MPH.
IN 1942...A STRONG THUNDERSTORM PRODUCED HAIL AND HEAVY RAINFALL
IN SOUTH DENVER. LEAVES WERE STRIPPED FROM TREES AND HEAVY
RAIN CAUSED STREET FLOODING WHICH HALTED TRAFFIC. HAIL OF
UNKNOWN SIZE REACHED A DEPTH OF 9 INCHES ON THE GROUND.
IN 1965...FUNNEL CLOUDS WERE OBSERVED TO THE SOUTH OF STAPLETON
INTERNATIONAL AIRPORT AND IN JEFFERSON COUNTY...15 MILES
SOUTHWEST OF THE AIRPORT. LATER...A TORNADO TOUCHED DOWN
BRIEFLY 1 MILE EAST OF LITTLETON...CAUSING ONLY MINOR DAMAGE.
ANOTHER TORNADO WAS OBSERVED 12 MILES SOUTHWEST OF STAPLETON
INTERNATIONAL AIRPORT IN JEFFERSON COUNTY. HAIL TO 3/4 INCH
IN DIAMETER FELL IN THE BEAR VALLEY AREA...12 MILES SOUTH-
SOUTHWEST OF STAPLETON INTERNATIONAL AIRPORT. YET ANOTHER
TORNADO WAS SIGHTED 10 MILES NORTHWEST OF THE AIRPORT.
CLOUDBURSTS ACCOMPANIED BY HAIL BATTERED AREAS OF ARAPAHOE
AND ADAMS COUNTIES EAST OF DENVER...DAMAGING RIPENING GRAIN
FIELDS. AT LAFAYETTE...3.50 INCHES OF RAIN FELL IN 30
MINUTES...CAUSING SOME FLOODING.
IN 1982...NUMEROUS FUNNEL CLOUDS WERE OBSERVED OVER SOUTHWEST
METRO DENVER. ONLY ONE FUNNEL TOUCHED DOWN NEAR THE
INTERSECTION OF JEWELL AND KIPLING. THE TORNADO WAS ON THE
GROUND FOR ABOUT 5 MINUTES AND CAUSED NO DAMAGE EXCEPT FOR
UPROOTING SOME TREES. IN ADDITION...THUNDERSTORMS PRODUCED
HEAVY RAIN AND HAIL IN THE FOOTHILLS WEST OF DENVER. OVER
AN INCH OF RAIN FELL IN A SHORT TIME NEAR IDAHO SPRINGS...
CAUSING CLEAR CREEK TO OVERFLOW ITS BANKS AND FLOOD A FEW
LOW LYING AREAS OF THE TOWN. A FEW PEOPLE WERE EVACUATED...
AND WATER AND MUD ENTERED SEVERAL STORES. THE HEAVY RAIN
ALSO WASHED OUT SEVERAL ROADS. HAIL PILED UP TO A DEPTH OF
3 TO 4 INCHES NEAR IDAHO SPRINGS. HAIL TO 3/4 INCH WAS
REPORTED AT MANY PLACES ACROSS METRO DENVER INCLUDING
STAPLETON INTERNATIONAL AIRPORT. LIGHTNING STRUCK A
CHEMISTRY BUILDING ON THE UNIVERSITY OF COLORADO CAMPUS IN
BOULDER AND STARTED A SMALL FIRE. THUNDERSTORM WIND GUSTS
TO 60 MPH WERE REPORTED NEAR BRIGHTON.
IN 1984...HEAVY RAIN CAUSED SOME STREET AND BASEMENT FLOODING
IN LITTLETON. ONE LOCATION RECEIVED 1.56 INCHES OF RAIN IN
75 MINUTES.
IN 1987...A WEAK TORNADO NEAR WATKINS STAYED ON THE GROUND FOR
5 MINUTES.
IN 1990...A SMALL TWISTER TOUCHED DOWN IN AN OPEN FIELD JUST
NORTH OF THE ROCKY MOUNTAIN ARSENAL. NO DAMAGE WAS
REPORTED.
IN 1998...HAIL AS LARGE AS 1 INCH IN DIAMETER FELL NEAR
EVERGREEN.
IN 2005...A SEVERE THUNDERSTORM PRODUCED HAIL AS LARGE AS
3/4 INCH NEAR ROGGEN. THE HAIL DESTROYED A WHEAT FIELD.
IN 2006...THE TEMPERATURE REACHED A HIGH OF 98 DEGREES AT
DENVER INTERNATIONAL AIRPORT. THIS MARKED THE 19TH DAY
IN JUNE WITH A MAXIMUM TEMPERATURE OF 90 DEGREES OR MORE
SETTING A NEW ALL-TIME RECORD FOR THE MONTH.
IN 2011...VERY STRONG THUNDERSTORM WINDS WERE ALSO OBSERVED
ACROSS PORTIONS OF THE URBAN CORRIDOR. A PEAK WIND GUST TO
65 MPH WAS RECORDED...2 MILES NORTHEAST OF BOULDER WITH A
GUST TO 63 MPH AT FRONT RANGE AIRPORT AT WATKINS AND
7 MILES SOUTHEAST OF DENVER INTERNATIONAL AIRPORT. THE
PEAK WIND GUST MEASURED AT DENVER INTERNATIONAL AIRPORT
ITSELF WAS 45 MPH. A SEVERE THUNDERSTORM ALSO PRODUCED
ONE INCH IN DIAMETER HAIL 2 MILES SOUTH-SOUTHEAST OF
PARKER. IN ADDITION...A LIGHTNING STRIKE DESTROYED A HOME
IN NORTH DENVER.
IN 2012...IT WAS THE HOTTEST JUNE IN DENVER SINCE WEATHER
RECORDS BEGAN BACK IN 1872. THE AVERAGE TEMPERATURE FOR
THE MONTH WAS 75.0 DEGREES WHICH WAS 7.6 DEGREES ABOVE
NORMAL. THERE WERE A TOTAL OF SEVENTEEN 90 DEGREE DAYS IN
THE MONTH OF JUNE. THE HIGHLIGHT OF RECORD SETTING MONTH
WAS A STRETCH OF FIVE CONSECUTIVE 100 DEGREE DAYS FROM THE
22ND TO THE 26TH. THIS WAS ONLY THE THIRD TIME IN DENVER
WEATHER HISTORY IN WHICH THIS HAPPENED. TWO OF THE HIGH
TEMPERATURES DURING THE STRETCH PEAKED AT 105 DEGREES...
WHICH SET THE ALL TIME RECORD FOR THE MONTH OF JUNE AND
TIED THE ALL-TIME MAXIMUM TEMPERATURE FOR DENVER.
IN 2019...EIGHT HIKERS WERE INJURED BY A NEARBY LIGHTNING
STRIKE AT THE DEVIL HEAD LOOKOUT...WEST OF PERRY PARK IN
DOUGLAS COUNTY. FIVE HIKERS WERE ABLE TO WALK OUT
UNASSISTED...WHILE TWO OTHER REQUIRED ASSISTANCE. MOST
COMPLAINED OF HAVING TINGLING SENSATIONS...WHILE TWO SUFFERED
FROM MINOR BURNS. THE EIGHTH VICTIM SUFFERED CRITICAL
INJURIES AND HAD TO BE CARRIED OUT BY STRETCHER AND TAKEN TO
A NEARBY HOSPITAL.
IN 2023...A TOTAL OF 5.35 INCHES OF RAIN FELL THROUGH THE
MONTH OF JUNE...ESTABLISHING THE ALL TIME RECORD FOR DENVER.
THE PREVIOUS RECORD WAS 4.96 INCHES SET 141 YEARS EARLIER IN
1882.
30-1 IN 1873...HEAVY RAINFALL OVERNIGHT...FROM THE 30TH TO THE 1ST...
TOTALED 1.42 INCHES. MOUNTAIN PEAKS TO THE SOUTHWEST OF THE
CITY WERE COVERED WITH FRESH SNOW ON THE MORNING OF THE 1ST.
1 IN 1915...NORTHEAST WINDS SUSTAINED TO 41 MPH WITH GUSTS TO
50 MPH OCCURRED JUST BEFORE A THUNDERSHOWER IN THE EVENING.
RAINFALL WAS ONLY 0.07 INCH.
IN 1941...UNUSUALLY HEAVY THUNDERSTORM RAINS FLOODED
BASEMENTS AND BLOCKED TRAFFIC. WATER WAS CURB HIGH
ON MANY DOWNTOWN STREETS. THE THUNDERSTORM ALSO PELTED
THE CITY WITH HAIL OF UNKNOWN SIZE. RAINFALL IN
DOWNTOWN DENVER TOTALED 0.72 INCH...BUT GREATER AMOUNTS
LIKELY OCCURRED IN OTHER PARTS OF THE CITY.
IN 1960...A SEVERE DUST DEVIL MOVING THROUGH AN ADAMS COUNTY
SUBURBAN AREA BLEW OVER A FIREWORKS STAND...INJURING AN 11-
YEAR-OLD BOY CUSTOMER AND TWO WOMEN OPERATORS OF THE STAND.
THE BOY WAS FOUND UNDER THE DEMOLISHED STAND 100 FEET AWAY.
IN 1961...HAIL AS LARGE AS 1 1/4 INCHES IN DIAMETER WAS
REPORTED OVER EAST DENVER.
IN 1967...GOLF BALL SIZE HAIL FELL OVER PORTIONS OF METRO
DENVER. HAIL STONES TO 2 INCHES IN DIAMETER DAMAGED ROOFS
AND BROKE WINDOWS IN NORTHEAST BOULDER. MARBLE TO GOLF BALL
SIZE HAIL FELL AT THE BOULDER AIRPORT. A FUNNEL CLOUD WAS
SIGHTED OVER THE FOOTHILLS NEAR BOULDER. HAIL STONES OF 1
TO 2 INCHES IN DIAMETER WERE MEASURED AT JEFFERSON COUNTY
AIRPORT NEAR BROOMFIELD. MARBLE SIZE HAIL FELL IN THE
VICINITY OF ARVADA AND WESTMINSTER.
IN 1982...SEVERE THUNDERSTORMS DROPPED LARGE HAIL IN DENVER...
BOULDER...COMMERCE CITY...LAKEWOOD...WHEAT RIDGE...GOLDEN...AND
ARVADA. MOST LOCATIONS REPORTED HAIL SIZE FROM 3/4 TO 1 1/4
INCHES IN DIAMETER.
IN 1990...THE HIGH TEMPERATURE REACHED 102 DEGREES AT
STAPLETON INTERNATIONAL AIRPORT.
IN 1998...HAIL TO 1 1/2 INCHES IN DIAMETER FELL NEAR BENNETT.
IN 2001...THE TEMPERATURE CLIMBED TO A HIGH OF 101 DEGREES AT
DENVER INTERNATIONAL AIRPORT.
IN 2016...A SEVERE THUNDERSTORM PRODUCED LARGE HAIL IN CASTLE
ROCK...RANGING IN SIZE FROM 1 TO 2 INCHES IN DIAMETER. THE
HAIL PUMMELED NEIGHBORHOODS AS IT SMASHED CARS AND
SHATTERED WINDOWS. THE STORM CAUSED EXTENSIVE DAMAGE TO
SHUTTERS...ROOFS...SIDING AND FENCING.
IN 2019...HEAVY RAINFALL PRODUCED MINOR FLOODING NEAR GOLD
HILL. SEVERE THUNDERSTORMS PRODUCED LARGE HAIL...FROM
1 TO 1 1/4 INCHES IN DIAMETER IN ARAPAHOE AND WELD COUNTIES.
IN 2021...A THUNDERSTORM GENERATED A PEAK WIND GUST TO 58 MPH
NEAR BENNETT.
1-18 IN 1874...A STREAK OF 18 CONSECUTIVE DAYS OF 90 DEGREES...FROM
THE 1ST TO THE 18TH...TIED FOR SECOND WITH ANOTHER STREAK
THAT WAS LATER SET IN THE SUMMER OF 1901. THE RECORD OF 24
CONSECUTIVE DAYS WAS ESTABLISHED IN THE SUMMER OF 2008.
1 IN 2012...IT WAS THE HOTTEST JULY ON RECORD IN DENVER SINCE
WEATHER RECORDS BEGAN IN 1872. THE AVERAGE TEMPERATURE FOR
THE MONTH WAS 78.9 DEGREES WHICH WAS 4.7 DEGREES ABOVE
NORMAL. THERE WERE 27 DAYS IN WHICH THE HIGH TEMPERATURE
EQUALED OR EXCEEDED 90 DEGREES...WHICH ESTABLISHED A NEW
RECORD. THERE WERE ALSO 7 DAYS IN WHICH THE TEMPERATURE
EQUALED OR EXCEEDED 100 DEGREES WHICH TIED THE RECORD
SET IN 2005.
2 IN 1879...A SEVERE HAIL STORM PRODUCED CONSIDERABLE DAMAGE
IN THE VICINITY OF ARVADA. SOME OF THE STONES WERE
UNUSUALLY LARGE...MEASURING 6.5 INCHES IN CIRCUMFERENCE
(2 INCHES IN DIAMETER) WITH AN AVERAGE WEIGHT OF 1 OUNCE.
THE STONES WERE UNIFORMLY LARGE WITH ONE SIDE CONCAVE.
THE GREATEST DAMAGE WAS TO EARLY WHEAT...CABBAGE...AND VINES.
A TREE JUST TO THE SOUTH OF THE WEATHER STATION IN DOWNTOWN
DENVER WAS STRUCK BY LIGHTNING. RESIDENTS IN THE HOUSE
15 FEET AWAY WERE AFFECTED BY THE STRIKE.
IN 1885...THUNDERSTORM WINDS WERE SUSTAINED TO 50 MPH IN THE
CITY.
IN 1892...AN APPARENT COLD FRONT PRODUCED SUSTAINED NORTHEAST
WINDS TO 40 MPH WITH GUSTS TO 45 MPH.
IN 1955...A APPARENT MICROBURST WIND GUST TO 69 MPH WAS
RECORDED AT STAPLETON AIRPORT WHERE THE BRIEF STRONG WIND
REDUCED THE VISIBILITY TO ZERO IN BLOWING DUST.
IN 1965...HAIL...UP TO 2 INCHES IN DIAMETER...STRUCK SOUTHWEST
ADAMS AND NORTHEAST DENVER COUNTIES...DAMAGING CARS...WINDOWS...
AND FOLIAGE. HAIL ACCUMULATED UP TO A FOOT DEEP. WIND
GUSTS TO 48 MPH AND HAIL TO 1 INCH IN DIAMETER FELL AT
STAPLETON INTERNATIONAL AIRPORT WHERE THE LARGE HAIL BROKE
THREE STORM WINDOWS AND SHREDDED SHRUBS AT THE U.S. WEATHER
BUREAU UPPER AIR BUILDING.
IN 1968...A PILOT REPORTED A TORNADO 10 MILES SOUTHEAST OF
PARKER.
IN 1971...ONE INCH DIAMETER HAIL STONES WERE REPORTED IN ADAMS
COUNTY ABOUT 30 MILES EAST OF DENVER.
IN 1987...A LARGE TORNADO TOUCHED DOWN 10 MILES NORTHEAST OF
STAPLETON INTERNATIONAL AIRPORT. THE TORNADO WAS VERTICAL
AND THICK AND KICKED UP A LARGE DUST AND DEBRIS CLOUD.
LATER...IT DEVELOPED A SINUOUS ROPE-LIKE SHAPE AS IT SLOWLY
DISSIPATED. THE TORNADO WAS VISIBLE FOR 15 MINUTES. THE
TWISTER OCCURRED IN OPEN COUNTRY AND DID ONLY MINOR DAMAGE
TO A METAL SHED...PORCH...AND MAILBOX. A MAN WAS KILLED BY
LIGHTNING IN SOUTHWEST AURORA. HE WAS IN HIS BACKYARD AND
HAD A SHOVEL IN HIS HAND AT THE TIME OF THE STRIKE. A GROUP
OF SOCCER PLAYERS WERE HIT BY LIGHTNING ON A FIELD IN
BOULDER. A 10-YEAR-OLD BOY WAS CRITICALLY INJURED AND
HOSPITALIZED; FORTUNATELY HE RECOVERED. SIX OTHER PEOPLE
WERE KNOCKED TO THE GROUND BY THE STRIKE. TWO OF THESE WERE
SLIGHTLY INJURED. GOLF BALL SIZE HAIL FELL JUST EAST OF
LITTLETON AND AT HIGHLANDS RANCH. HAIL AS LARGE AS 3/4 INCH
IN DIAMETER WAS REPORTED IN AURORA AND PARKER AND NEAR HUDSON
AND FRANKTOWN.
IN 1988...A 45-YEAR-OLD MAN WAS INJURED BY LIGHTNING AT CHERRY
CREEK RESERVOIR. ADMINISTRATION OF CPR PROBABLY SAVED HIS
LIFE.
IN 1990...THE TEMPERATURE REACHED A HIGH OF 100 DEGREES AT
STAPLETON INTERNATIONAL AIRPORT.
IN 1993...THUNDERSTORM WINDS BLEW A ROOF OFF A BARN NEAR
PARKER...CAUSING AN ESTIMATED 15 HUNDRED DOLLARS DAMAGE.
IN 1994...THUNDERSTORM WINDS DOWNED POWER LINES IN BOULDER...
CAUSING POWER OUTAGES. WINDS GUSTED TO 66 MPH IN BOULDER...
64 MPH IN ARVADA...AND 60 MPH IN GOLDEN.
IN 1998...A SMALL TORNADO TOUCHED DOWN BRIEFLY NEAR BARR LAKE...
BUT CAUSED NO DAMAGE.
IN 2002...HAIL AS LARGE AS 1 3/4 INCHES IN DIAMETER FELL IN
THE CITY OF DENVER AND IN ARAPAHOE COUNTY NEAR LITTLETON.
THE LOW TEMPERATURE OF 69 DEGREES EQUALED THE RECORD HIGH
MINIMUM FOR THE DATE.
IN 2006...LIGHTNING STRUCK A TEENAGER IN CASTLE ROCK AS HE
WAS MOWING HIS LAWN AND LISTENING TO AN IPOD. THE TEEN
SUFFERED BURNS TO HIS HANDS AND FEET...AND HAD BLOOD
RUNNING FROM HIS EARS WHEN HE WAS FOUND. THE VICTIM'S
EARDRUMS WERE RUPTURED...WHICH DAMAGED HIS HEARING.
LIGHTNING ALSO STRUCK A HOUSE IN CASTLE ROCK CAUSING
EXTENSIVE DAMAGE TO THE ROOF AND SIDE OF THE HOME.
HEAVY RAINS CAUSED FLASH FLOODING AT CASTLEWOOD CANYON
STATE PARK NEAR FRANKTOWN. THE FLOODWATERS DESTROYED
FOUR FOOTBRIDGES ALONG THE HIGH TRAIL. A CULVERT AND
SEVERAL ROADS WERE WASHED OUT IN THE AREA. IN ADDITION...
TWO DRIVEWAYS CROSSING CHERRY CREEK WERE WASHED OUT NEAR
PRAIRIE CANYON RANCH. HEAVY RAINFALL ALSO CAUSED MINOR
FLOODING ON MURPHY AND SAND CREEKS...JUST EAST OF BUCKLEY
AFB. GUN CLUB ROAD WAS CLOSED BETWEEN ALAMEDA AND
MISSISSIPPI AVENUES...NORTH OF THE MURPHY CREEK GOLF
COURSE...WHERE 3 FEET OF STANDING WATER REPORTEDLY COVERED
THE ROAD. A SEVERE THUNDERSTORM PRODUCED LARGE HAIL TO
7/8 INCH IN DIAMETER IN SOUTH AURORA NEAR CHERRY CREEK.
IN 2016...A WEAK LANDSPOUT TOUCHED DOWN BRIEFLY IN AND OPEN
FIELD NEAR BENNETT.
IN 2018...A SEVERE THUNDERSTORM PRODUCED A WIND GUST TO 64
MPH AT DENVER INTERNATIONAL AIRPORT.
IN 2021...A SEVERE THUNDERSTORM PRODUCED LARGE HAIL FROM
BRIGHTON TO BARR LAKE. HAIL AS LARGE AS 1 3/4 INCHES IN
DIAMETER WAS REPORTED.
3 IN 1874...THE TEMPERATURE CLIMBED TO A HIGH OF 101 DEGREES
IN DOWNTOWN DENVER.
IN 1881...THE ALL TIME HIGHEST RECORDED DAILY MINIMUM
TEMPERATURE OF 77 DEGREES OCCURRED IN THE CITY. THIS
WAS ALSO THE HIGHEST DAILY MINIMUM TEMPERATURE EVER
RECORDED IN JULY.
IN 1885...A SEVERE THUNDERSTORM PRODUCED HAIL THE SIZE OF
HAZEL NUTS...WHICH FELL WITH GREAT FORCE. A TELEGRAPH
POLE IN WEST DENVER WAS STRUCK BY LIGHTNING AND SHATTERED
TO PIECES.
IN 1955...A BRIEF MICROBURST WIND GUST TO 61 MPH WAS RECORDED
AT STAPLETON AIRPORT.
IN 1960...A MAJOR HAIL STORM CAUSED 1.5 MILLION DOLLARS IN
DAMAGE ACROSS METRO DENVER. THE HEAVIEST DAMAGE OCCURRED IN
SOUTH DENVER...ENGLEWOOD...LITTLETON...AND GOLDEN FROM WIND-
DRIVEN HAIL AS LARGE AS GOLF BALLS AND HEAVY RAIN WHICH
CAUSED FLOODING. WINDS WERE ESTIMATED AT 60 TO 70 MPH.
RAINFALL WAS ESTIMATED AT 2 TO 3 INCHES. HAIL ACCUMULATED
3 TO 4 INCHES DEEP IN SOME SECTIONS. HAIL CARRIED BY FLOOD
WATERS DRIFTED 3 TO 4 FEET DEEP. AN ENGLEWOOD POLICEMAN WAS
INJURED WHEN HAIL BROKE THE WINDSHIELD OF HIS CAR. ONE INCH
OF RAIN IN 10 MINUTES...AND HEAVY HAIL DAMAGE WERE REPORTED IN
PARKER. AT SOME PLACES THE HAIL FROM THE STORM WAS STILL ON
THE GROUND THE NEXT MORNING.
IN 1967...LARGE HAIL STONES FROM 1 3/4 TO 2 1/2 INCHES IN
DIAMETER DAMAGED CARS AND BUILDINGS IN SOUTHWEST DENVER AND
LITTLETON WHERE HAIL DRIFTED TO DEPTHS OF 3 TO 4 FEET. THE
HAIL CAUSED A GREAT DEAL OF DAMAGE...AND STREETS WERE FLOODED
BY HEAVY RAIN OVER MANY SECTIONS OF WEST METRO DENVER. AT
CENTENNIAL RACE TRACK NEAR LITTLETON...A FEW HAIL STONES
WERE AS LARGE AS TENNIS BALLS. LARGE HAIL BROKE THE
WINDSHIELD ON A LITTLETON POLICE CAR. GOLF BALL TO TENNIS
BALL SIZE HAIL FELL IN THE VICINITY OF ARAPAHOE ROAD AND
SOUTH BROADWAY. ONE INCH DIAMETER HAIL FELL AT THE
INTERSECTION OF ORCHARD AND SOUTH UNIVERSITY. GOLF BALL
SIZE HAIL FELL IN BROOMFIELD. HAIL IN WESTMINSTER WAS
MEASURED FROM 1 TO 1 1/4 INCHES IN DIAMETER. TORNADOES
WERE SIGHTED BY THE PUBLIC NEAR CHERRY CREEK RESERVOIR...
NORTH OF COMMERCE CITY...AND IN ARVADA...BUT CAUSED NO
REPORTABLE DAMAGE.
IN 1993...HIGH WINDS DEVELOPED BEHIND A STRONG COLD FRONT ALONG
PORTIONS OF THE FRONT RANGE. WHILE THE STRONGEST WINDS WERE
REPORTED NORTH OF METRO DENVER...THE WINDS BLEW OUT A HALF
INCH THICK PANE OF GLASS FROM A VACANT 9-STORY BUILDING.
THE GLASS LANDED ON A PARKED CAR BELOW. WEST WINDS GUSTING
TO 52 MPH KICKED UP SOME BLOWING DUST AT STAPLETON
INTERNATIONAL AIRPORT.
IN 1996...LIGHTNING SPARKED A SMALL FIRE NEAR BUFFALO CREEK
IN SOUTHERN JEFFERSON COUNTY. ONLY ONE ACRE BURNED BEFORE
THE FIRE WAS CONTAINED.
IN 2002...HEAVY THUNDERSTORM RAIN WASHED OUT A FRONTAGE ROAD
6 MILES NORTH OF LARKSPUR. THE NEARBY MOUNTAIN RANCH
SUBDIVISION WAS ALSO FLOODED. HEAVY RAINFALL IN THE
HAYMAN FIRE BURN AREA WASHED OUT A SECONDARY ROAD WHEN
DEBRIS FROM THE RUNOFF BLOCKED A CULVERT. HAIL AS LARGE
AS 3/4 INCH FELL NEAR KEENESBURG...IN CASTLE ROCK...AND
7 MILES TO THE SOUTH OF CASTLE ROCK.
IN 2005...SEVERE THUNDERSTORMS PRODUCED HIGH WINDS. WIND
GUSTS TO 75 MPH WERE MEASURED NEAR LONGMONT AND TO 60 MPH
JUST WEST OF BOULDER. NO DAMAGE WAS REPORTED.
IN 2007...SEVERE THUNDERSTORMS PRODUCED LARGE HAIL IN THE
FOOTHILLS AND SUBURBS WEST OF DENVER. LARGE HAIL FROM
1 TO 2 INCHES IN DIAMETER WAS REPORTED IN THE VICINITY OF
IDAHO SPRINGS...ROLLINS AND EDGEWATER.
IN 2009...SEVERE THUNDERSTORMS PRODUCED LARGE HAIL AND
NORTH AND EAST OF DENVER. HAIL UP TO ONE INCH IN
DIAMETER WAS OBSERVED NEAR ERIE AND FIRESTONE. HAIL UP
TO 1 3/4 INCHES WAS OBSERVED 5 TO 6 MILES WEST-SOUTHWEST
OF BYERS. THE GOLFBALL SIZE HAIL CAUSED EXTENSIVE DAMAGE
TO A WHEAT FIELD. IN AURORA...SIX CHILDREN RECEIVED MINOR
INJURIES WHEN LIGHTNING STRUCK A NEARBY TREE. THE
INJURIES OCCURRED WHEN THEY WERE KNOCKED DOWN BY THE BLAST.
NONE OF THE CHILDREN SUFFERED BURNS OR APPEARED TO HAVE
BEEN DIRECTLY HIT BY LIGHTNING.
IN 2014...A SEVERE THUNDERSTORM PRODUCED LARGE...UP TO 1 1/2
INCHES IN DIAMETER...ABOUT 14 MILES NORTHWEST OF GOLDEN.
4 IN 1874...THE TEMPERATURE REACHED A HIGH OF 102 DEGREES IN
DOWNTOWN DENVER. LARGE FOREST FIRES IN THE MOUNTAINS FROM
THE WEST-NORTHWEST TO THE SOUTH FILLED THE ATMOSPHERE OVER
THE CITY WITH DENSE SMOKE.
IN 1885...A THUNDERSTORM PRODUCED SUSTAINED WINDS TO 44 MPH
WITH GUSTS TO 60 MPH. A CIRCUS TENT WAS TATTERED BY THE
STRONG WINDS.
IN 1900...A THUNDERSTORM PRODUCED NORTHWEST WINDS SUSTAINED TO
42 MPH WITH GUSTS TO 51 MPH...BUT ONLY 0.05 INCH OF RAIN.
IN 1903...THE ALL TIME LOWEST TEMPERATURE EVER RECORDED IN
JULY...42 DEGREES...OCCURRED. THE TEMPERATURE ALSO OCCURRED
ON JULY 31...1873.
IN 1910...THUNDERSTORM WINDS WERE SUSTAINED TO 42 MPH FROM THE
SOUTHWEST.
IN 1922...THUNDERSTORM WINDS WERE SUSTAINED TO 37 MPH WITH
GUSTS TO 48 MPH.
IN 1956...A THUNDERSTORM WIND GUST TO 54 MPH WAS RECORDED AT
STAPLETON AIRPORT.
IN 1964...SEVERAL MEN WERE KNOCKED DOWN BY A BOLT OF LIGHTNING
WHILE PLAYING GOLF IN SOUTH METRO DENVER. THEY GOT UP AND
RAN FOR COVER WHEN ONE OF THEM WAS STRUCK BY A SECOND BOLT.
HE SUFFERED BURNS AND SHOCK.
IN 1987...A WEAK TORNADO WAS OBSERVED FOR 6 MINUTES...7 MILES
NORTHEAST OF WATKINS. HAIL 3/4 TO 1 1/4 INCHES IN DIAMETER
FELL IN SOUTHEAST AURORA.
IN 1988...LIGHTNING STRUCK A GROUP OF PEOPLE AT THE JEFFERSON
COUNTY FAIRGROUNDS. A 42-YEAR-OLD WOMAN WAS SERIOUSLY
INJURED AND WAS HOSPITALIZED FOR 3 DAYS. FOUR OTHER PEOPLE
SUSTAINED MINOR INJURIES.
IN 1993...STRONG NORTHWEST WINDS UPROOTED SEVERAL TREES ACROSS
METRO DENVER. WIND GUSTS TO 64 MPH WERE REPORTED AT ERIE
NORTH OF DENVER. A WEST WIND GUST TO 43 MPH WAS RECORDED
AT STAPLETON INTERNATIONAL AIRPORT.
IN 1995...LIGHTNING STRUCK AND INJURED TWO PEOPLE STANDING IN
A FIELD IN ARVADA.
IN 1998...HEAVY THUNDERSTORM RAIN...UP TO 2.75 INCHES...AND
MARBLE SIZE HAIL COMBINED TO FLOOD LOCAL ROADS AND FIELDS
NEAR ROGGEN.
IN 2002...HEAVY THUNDERSTORM RAIN IN THE HAYMAN FIRE BURN AREA
CAUSED FLASH FLOODING. IN JEFFERSON COUNTY...GULCH ROAD WAS
WASHED OUT. IN DOUGLAS COUNTY...HIGH WATER WASHED OUT SOME
FOREST ACCESS ROADS AS WELL...GENERALLY TO THE EAST OF A LINE
EXTENDING FROM SIGNAL BUTTE TO DECKERS.
IN 2010...INTENSE THUNDERSTORMS PRODUCED TORRENTIAL RAINFALL...
IN EXCESS OF 5 INCHES IN ONE HOUR...AND CAUSED FLASH FLOODING
IN THE VICINITY OF ELIZABETH. NUMEROUS COUNTY ROADS WERE
WASHED OUT. THE COMBINATION OF HEAVY RAIN AND HAIL MADE IT
NECESSARY TO RUN SNOW PLOWS THROUGH TOWN. EXTENSIVE
BASEMENT FLOODING WAS ALSO REPORTED. SEVERE THUNDERSTORMS
PRODUCED LARGE HAIL FROM AURORA SOUTH TO ELIZABETH AND
LARKSPUR. THE HAIL SIZE RANGED FROM 1 TO 2 INCHES IN
DIAMETER. A WET MICROBURST PRODUCED 1.84 INCHES OF RAINFALL
AT DENVER INTERNATIONAL AIRPORT. A PEAK WIND GUST TO 48 MPH
WAS ALSO OBSERVED FROM THE NORTHEAST.
IN 2017...A MICROBURST PRODUCED A WIND GUST TO 61 MPH...ABOUT 13
MILES EAST-NORTHEAST OF DENVER INTERNATIONAL AIRPORT.
IN 2019...SEVERE THUNDERSTORMS BROUGHT A WAVE OF LARGE HAIL ACROSS
PORTIONS OF ARAPAHOE...BROOMFIELD...DENVER...DOUGLAS...JEFFERSON...
AND WELD COUNTIES. THE HAIL RANGED IN SIZE FROM 1 TO 2 INCHES
IN DIAMETER. THE CITY OF LONE TREE EVACUATED SWEETWATER PARK...
WHERE FOURTH OF JULY CELEBRATIONS WERE UNDERWAY...AND BRIGHTON
DELAYED ITS FOURTH OF JULY CONCERT. THE DENVER OUTLAWS GAME
WAS POSTPONED DUE TO LIGHTNING. IN DENVER COUNTY...THERE WAS
WIDESPREAD DAMAGE FROM THE HAIL...INCLUDING DAMAGE TO ROOF
COVERINGS AND VEHICLES.
4-5 IN 1875...FROM THE 4TH TO THE 5TH...NEARLY EVERY RAILROAD RUNNING
INTO THE CITY WAS DAMAGED BY HEAVY THUNDERSTORM RAINS. THE
HEAVY RAINS WASHED OUT WOODEN BRIDGES OVER NORMALLY DRY CREEKS.
SOME TRAINS WERE ENTIRELY SUSPENDED. IN THE CITY...HEAVY
THUNDERSTORM RAIN TOTALED 1.05 INCHES ON THE 4TH...BUT
ONLY 0.28 INCH ON THE 5TH.
4-8 IN 1989...ONE OF THE MOST INTENSE HEAT WAVES ON RECORD ROASTED
METRO DENVER. THE TEMPERATURE REACHED 100 DEGREES OR MORE
ON 5 CONSECUTIVE DAYS. THE CITY HAD PREVIOUSLY NEVER
RECORDED MORE THAN 2 STRAIGHT 100-DEGREE DAYS SINCE RECORDS
BEGAN IN 1872. WATER AND ELECTRICITY USAGE REACHED ALL TIME
HIGHS. THE HEAT WAVE CREATED EXTREMELY DRY WEATHER
CONDITIONS...WHICH CONTRIBUTED TO A MAJOR FOREST FIRE IN
BOULDER CANYON ON JULY 9TH. THE TEMPERATURE REACHED 103
DEGREES ON THE 8TH...AND THE MERCURY CLIMBED TO 101 DEGREES
ON BOTH THE 4TH AND 5TH...AND TO 102 DEGREES ON BOTH THE
6TH AND 7TH. THE LOW TEMPERATURE OF 68 DEGREES ON THE 8TH
EQUALED THE RECORD HIGH MINIMUM FOR THE DATE.
5 IN 1908...A LATE EVENING THUNDERSTORM PRODUCED SUSTAINED NORTH
WINDS TO 40 MPH...HAIL...AND 0.45 INCH OF PRECIPITATION.
IN 1949...A DUST DEVIL...POSSIBLY A SMALL TORNADO...WAS OBSERVED
3 MILES TO THE NORTHWEST OF STAPLETON AIRPORT.
IN 1973...THE TEMPERATURE REACHED 100 DEGREES AT STAPLETON
INTERNATIONAL AIRPORT.
IN 1974...STRONG THUNDERSTORM WINDS DAMAGED A MOBILE HOME...A
BARN...TWO HOUSES...AND SEVERAL SHEDS NEAR WATKINS.
IN 1975...A THUNDERSTORM WIND GUST TO 53 MPH WAS RECORDED AT
STAPLETON INTERNATIONAL AIRPORT. HAIL UP TO 3/4 INCH IN
DIAMETER FELL OVER THE NORTHWEST SUBURBS AND IN NORTHWEST
DENVER.
IN 1977 THREE HOUSES IN DENVER WERE STRUCK BY LIGHTNING.
SOME HEAVY DAMAGE AND FIRE OCCURRED.
IN 1990...LIGHTNING CAUSED MINOR DAMAGE TO HOUSES IN CASTLE
ROCK...LOUVIERS...AND LITTLETON.
IN 1996...LIGHTNING CAUSED ONLY MINOR DAMAGE WHEN IT STRUCK
A HOME IN EVERGREEN. LIGHTNING FROM A FAST MOVING
THUNDERSTORM BLASTED A LARGE HOLE IN THE SIDE OF A HOUSE
IN LAKEWOOD. LIGHTNING TRIGGERED A MINOR POWER OUTAGE IN
THE BOULDER AREA. ABOUT 200 HOMES WERE AFFECTED.
IN 2001...SEVERE THUNDERSTORM WINDS GUSTED TO 60 MPH AT DENVER
INTERNATIONAL AIRPORT AND TO 70 MPH...7 MILES SOUTHWEST OF
THE AIRPORT.
IN 2008...MICROBURST WINDS DOWNED A LARGE TREE AND SOME POWER
LINES NEAR A DENVER APARTMENT COMPLEX. SEVERAL OF THE
TENANTS' VEHICLES WERE DAMAGED.
IN 2009...A WET MICROBURST PRODUCED VERY STRONG WINDS IN AND
JUST EAST OF DENVER. A PEAK WIND GUST OF 69 MPH WAS
MEASURED 1.5 MILES EAST OF DENVER. IN ADDITION...1.50
INCHES OF RAIN FELL IN 30 MINUTES. A PEAK WIND GUST TO
68 MPH WAS ALSO OBSERVED NEAR BYERS. SOUTHWEST WINDS
GUSTED TO 31 MPH AT DENVER INTERNATIONAL AIRPORT. THE
AIRPORT ALSO RECIEVED 0.30 INCHES OF RAINFALL.
IN 2019...SEVERE THUNDERSTORMS PRODUCED LARGE HAIL ALONG
THE I-25 CORRIDOR AND ADJACENT PLAINS. THE HAIL RANGED IN
SIZE FROM 1 TO 2 1/2 INCHES IN DIAMETER...WITH THE LARGEST
HAIL REPORTED IN BOULDER COUNTY NEAR LOUISVILLE. OTHER
COUNTIES IMPACTED BY THIS EVENT INCLUDED: ADAMS...
ARAPAHOE...DENVER...ELBERT AND WELD.
IN 2021...A THUNDERSTORM PRODUCED A PEAK WIND GUST TO 68
MPH AT BUCKLEY AIR FORCE BASE.
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