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NOUS45 KBOU 250859
PNSBOU
COZ030>051-252300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
259 AM MDT SAT JUL 25 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.
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.
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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