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NOUS45 KBOU 230859
PNSBOU
COZ030>051-232300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
259 AM MDT THU JUL 23 2026
..TODAY 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.
18-2 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.
19-23 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.
20-23 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.
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.
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