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NOUS45 KBOU 180859
PNSBOU
COZ030>051-182300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
259 AM MDT TUE AUG 18 2026
..TODAY IN METRO DENVER WEATHER HISTORY
16-19 IN 1979...HEAVY THUNDERSTORM RAINS ON EACH OF 4 CONSECUTIVE
DAYS...THE 16TH THROUGH THE 19TH...DUMPED A TOTAL OF 2.62
INCHES OF RAIN ON STAPLETON INTERNATIONAL AIRPORT. THE
HEAVIEST RAIN...1.05 INCHES...ON THE 19TH WAS ACCOMPANIED BY
1/4 INCH DIAMETER HAIL.
18 IN 1965...HEAVY RAIN IN AREAS SOUTH AND EAST OF DENVER CAUSED
SOME FLOODING IN LITTLETON AND ENGLEWOOD. CLEAR CREEK WAS
RUNNING NEAR BANKFULL...AND HEAVY RAIN IN SOUTHWEST DENVER
FLOODED INTERSECTIONS.
IN 1966...A BRIEF VERY HEAVY THUNDERSTORM DUMPED 0.61 INCH OF
RAIN IN JUST 5 MINUTES AT STAPLETON INTERNATIONAL AIRPORT.
TOTAL RAINFALL FROM THE STORM...0.64 INCH...FELL IN JUST 10
MINUTES. HALF INCH DIAMETER HAIL ALSO FELL AT STAPLETON
INTERNATIONAL AIRPORT. THE PUBLIC SIGHTED FUNNEL CLOUDS 10
TO 15 MILES SOUTH OF THE AIRPORT.
IN 1967...HAIL STRUCK IN A STRIP ALONG THE EASTERN FOOTHILLS
AND CAUSED MINOR DAMAGE IN BOULDER. HAIL ACCUMULATED TO A
DEPTH OF 4 TO 6 INCHES IN JEFFERSON COUNTY JUST SOUTHWEST
OF DENVER.
IN 1983...ONE INCH TO HEN EGG SIZE HAIL WAS REPORTED IN
BROOMFIELD WITH GOLF BALL SIZE HAIL AT NORTHGLENN.
IN 1990...DIME SIZE HAIL AND THUNDERSTORM WIND GUSTS TO 50 MPH
WERE REPORTED BY STORM SPOTTERS JUST EAST OF AURORA NEAR
THE INTERSECTION OF MISSISSIPPI AVENUE AND GUN CLUB ROAD.
THE HAIL AND STRONG WINDS DAMAGED A NUMBER OF WINDOWS IN
THE AREA.
IN 1991...VERY HEAVY RAIN FROM SLOW MOVING THUNDERSTORMS
DUMPED UP TO 3 INCHES OF RAIN IN 20 MINUTES IN THE VICINITY
OF IDAHO SPRINGS AND CENTRAL CITY. FLOODING IN IDAHO
SPRINGS FORCED THE CLOSURE OF THE VIRGINIA GULCH ROAD...WHICH
RUNS FROM IDAHO SPRINGS TO CENTRAL CITY. DIRT ROADS ABOVE
CENTRAL CITY WERE DAMAGED OR DESTROYED WITH THE MUD BEING
SWEPT ONTO STREETS IN TOWN. HIGH WATER IN CLEAR CREEK...UP
TO 3 FEET ABOVE FLOOD STAGE...WASHED OUT A BRIDGE IN IDAHO
SPRINGS. ROCK AND MUD SLIDES FORCED THE CLOSURE OF I-70
ABOUT 1 MILE EAST OF IDAHO SPRINGS.
IN 1997...DRY MICROBURSTS PRODUCED TWO PEAK WIND GUSTS TO
AN ESTIMATED 60 MPH EAST OF BUCKLEY FIELD.
IN 2000...HAIL AS LARGE AS 3/4 INCH IN DIAMETER WAS MEASURED
5 MILES WEST OF SEDALIA.
IN 2003...A SEVERE THUNDERSTORM PRODUCED HAIL AS LARGE AS
2.75 INCHES IN DIAMETER AT HIGHLANDS RANCH. HAIL TO 3/4
INCH WAS REPORTED IN AURORA NEAR CHERRY CREEK AND IN
ARAPAHOE COUNTY 9 MILES SOUTHEAST OF AURORA.
IN 2004...HEAVY THUNDERSTORM RAINFALL CAUSED FLASH FLOODING
ACROSS CENTRAL AND SOUTHERN METRO DENVER. A RAIN GAGE AT
CITY PARK RECORDED 4.37 INCHES OF RAINFALL FROM THE DELUGE.
SEVERAL ROADS IN AND AROUND THE CITY HAD TO BE CLOSED DUE
TO FLOODWATERS...STRANDING MANY VEHICLES. THE DENVER FIRE
DEPARTMENT CONDUCTED AT LEAST 15 WATER RESCUES. ONE DRIVER
NEARLY DROWNED WHEN HE MADE A WRONG TURN INTO A RETAINING
POND. FOUR MEN WHO WITNESSED THE ACCIDENT WERE ABLE TO SAVE
THE MAN BEFORE HIS CAR WAS COMPLETELY SUBMERGED. WIDESPREAD
STREET FLOODING WAS REPORTED IN THE DENVER STAPLETON AREA
WHERE RAINFALL TOTALED 3.81 INCHES. STANDING WATER OVER
6 INCHES DEEP WAS REPORTED NEAR I-70 AND QUEBEC...I-225 SOUTH
OF I-70...AND I-25 NEAR 6TH AVENUE. FLOODWATERS REACHED
8 FEET DEEP IN SOME LOW LYING AREAS AS SEWERS BECAME CLOGGED
AND THE STORM RUNOFF PIPES WERE UNABLE TO HANDLE THE HEAVY
FLOW OF WATER. HEAVY RAINFALL CAUSED ADDITIONAL FLASH
FLOODING SOUTH OF DENVER. SEVERAL STREET INTERSECTIONS IN
CENTENNIAL AND SOUTHERN AURORA BECAME IMPASSABLE DUE TO HIGH
WATER. TWO FEET OF WATER COVERED PORTIONS OF THE ROADWAY NEAR
PARK MEADOWS MALL. ONE PERSON HAD TO BE RESCUED NEAR THE
INTERSECTION OF ARAPAHOE ROAD AND LIVERPOOL. FLOODWATERS
FORCED THE CLOSURE OF STONEGATE PARKWAY NEAR JORDAN ROAD AND
LINCOLN AVENUE. FLOODING WAS ALSO REPORTED ON MERIDIAN BLVD.
NEAR I-25. RAINFALL WAS 1.62 INCHES AT DENVER INTERNATIONAL
AIRPORT.
18-19 IN 1875...NEARLY 0.75 INCH OF RAINFALL IN THE CITY OVERNIGHT...
FROM THE 18TH TO THE 19TH...POSSIBLY ASSISTED BY HEAVIER
RAINFALL UPSTREAM...PRODUCED A DECIDED AND RAPID RISE IN
CHERRY CREEK...WHICH WASHED OUT SOME BRIDGES. OTHER SMALL
CREEKS AND STREAMS WERE FILLED TO OVERFLOWING.
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