958
NOUS45 KBOU 090859
PNSBOU
COZ030>051-092300-
PUBLIC INFORMATION STATEMENT
NATIONAL WEATHER SERVICE DENVER/BOULDER CO
259 AM MDT THU MAY 9 2024
..TODAY IN METRO DENVER WEATHER HISTORY
8-9 IN 1957...FROM THE 8TH TO THE 9TH...INTENSE HEAVY RAIN
CAUSED FLASH FLOODING ON TOLL GATE CREEK IN AURORA
WHERE 3 PEOPLE WERE KILLED IN A CAR. UP TO 4 INCHES OF
RAIN FELL IN 5 HOURS IN THE TOLL GATE CREEK BASIN.
THE RAIN ALSO CAUSED FLASH FLOODING ON SAND CREEK IN
AURORA AND DENVER. RAINFALL TOTALED 3.29 INCHES
AT STAPLETON AIRPORT WITH MOST OF THE RAIN...2.34 INCHES...
OCCURRING ON THE 9TH.
8-10 IN 1979...FROM THE 8TH TO THE 10TH...4.3 INCHES OF SNOW
FELL AT STAPLETON INTERNATIONAL AIRPORT WHERE NORTHWEST
WINDS GUSTED TO 30 MPH ON THE 8TH. MOST OF THE SNOWFALL...
2.3 INCHES...OCCURRED ON THE 9TH. HIGH TEMPERATURE OF ONLY
35 DEGREES ON THE 9TH EQUALED THE RECORD LOW MAXIMUM FOR
THE DATE.
9 IN 1875...A HEAVY WINDSTORM SWEPT ACROSS THE CITY FOR MOST
OF THE DAY. WEST-NORTHWEST WINDS AVERAGED A SUSTAINED
SPEED OF 31 MPH BETWEEN 6:00 AM AND 3:00 PM. THE PEAK
WIND WAS SUSTAINED TO 45 MPH AT 9:50 AM.
IN 1918...POST-FRONTAL WINDS WERE SUSTAINED TO 40 MPH WITH
GUSTS AS HIGH AS 43 MPH. ONLY A TRACE OF RAIN FELL.
IN 1941...A TORNADO WAS NOTED AT 2:20 PM TO THE NORTHEAST
OF DOWNTOWN AND WAS FOLLOWED BY ANOTHER SIMILAR SHAPED
CLOUD OR DUST ROLL ESTIMATED 3 MILES BEHIND. THICK DUST
FOLLOWED WITH HEAVY GUSTS OF WIND. THE TEMPERATURE FELL
15 DEGREES IN 10 MINUTES FOLLOWING THE TWISTER. THE MILD
TORNADO DID LITTLE DAMAGE EXCEPT TO UNPROTECTED FRAME
STRUCTURES. WINDS WERE SUSTAINED TO 50 MPH WITH THE
PASSING OF THE TORNADO AT STAPLETON AIRPORT. IT WAS
VISIBLE TO OBSERVERS FOR 10 MINUTES AND WAS LOST FROM
SIGHT AS IT TRAVELED EAST INTO HUGE ROLLS OF DUST. HAIL
AND RAIN FOLLOWED WITH A FEW HAILSTONES AS LARGE AS 1/2
INCH IN DIAMETER DOWNTOWN. NO DAMAGE WAS REPORTED FROM
THE HAIL. THUNDERSTORM WINDS SUSTAINED TO 31 MPH PRODUCED
BLOWING DUST DOWNTOWN. PRECIPITATION WAS ONLY 0.07 INCH.
IN 1983...STREAMS SWOLLEN BY RECENT RAIN AND SNOWMELT CAUSED
AN EARTHEN DAM TO COLLAPSE...WASHING OUT PORTIONS OF STATE
HIGHWAY 67 NEAR DECKERS IN SOUTHERN DOUGLAS COUNTY.
IN 1992...THREE BOYS...AGES 11...12...AND 16...WERE STRUCK BY
LIGHTNING WHILE TAKING COVER UNDER A LARGE TREE DURING A
THUNDERSTORM IN JEFFERSON COUNTY...JUST 7 MILES NORTHWEST
OF DENVER. THE THREE WERE SERIOUSLY INJURED.
9-10 IN 1889...FROM THE 9TH TO THE 10TH...HEAVY RAINFALL TOTALED
2.15 INCHES IN DOWNTOWN DENVER. THE COLD RAIN WAS MIXED
WITH SNOW AT TIMES OVERNIGHT. TEMPERATURES ON THE 10TH
RANGED FROM A HIGH OF 38 DEGREES TO A LOW OF 32 DEGREES
WITH NORTH WINDS SUSTAINED TO 22 MPH.
IN 2003...A LATE SPRING SNOWSTORM HAMMERED THE MOUNTAINS...
EASTERN FOOTHILLS...AND URBAN CORRIDOR. THE HEAVIEST
SNOWFALL OCCURRED NORTH OF INTERSTATE 70. THE HEAVY
WET SNOW CAUSED DAMAGE TO TREES THROUGHOUT METRO DENVER
AND DOWNED POWER LINES. ABOUT 40 THOUSAND PEOPLE ALONG
THE URBAN CORRIDOR WERE WITHOUT POWER. STORM TOTAL
SNOWFALL AMOUNTS INCLUDED: 11.5 INCHES IN LOUISVILLE...
8 INCHES IN BOULDER AND BROOMFIELD; 7 INCHES IN
THORNTON...BROOMFIELD...AT DENVER INTERNATIONAL AIRPORT...
AND AT THE SITE OF THE FORMER STAPLETON INTERNATIONAL
AIRPORT; AND 6 INCHES 4 MILES EAST OF DENVER. SNOWFALL
RANGED FROM 4 TO 9 INCHES ACROSS EXTREME SOUTHERN WELD
COUNTY. IN THE FOOTHILLS...15 INCHES OF SNOW FELL NEAR
JAMESTOWN...9 INCHES AT ROLLINSVILLE AND RAWAH...WITH
8 INCHES AT CHIEF HOSA AND ATOP LOOKOUT MOUNTAIN.
THE SNOW WAS ACCOMPANIED BY THUNDER ON THE AFTERNOON
OF THE 9TH AT DENVER INTERNATIONAL AIRPORT WHERE WEST
WINDS GUSTED TO 25 MPH ON THE 9TH AND NORTH WINDS GUSTED
TO 22 MPH ON THE 10TH.
IN 2015...FROM THE 9TH TO THE 10TH...A STRONG STORM SYSTEM
BROUGHT HEAVY SNOW TO AREAS IN AND AROUND DENVER.
MODERATE TO HEAVY RAIN SHOWERS TRANSITIONED OVER TO
SNOW BY EARLY IN THE EVENING ON THE 9TH. HEAVY
WET SNOW OVERNIGHT CAUSED MANY TREES TO BREAK UNDER THE
PRESSURE OF THE SUDDEN WEIGHT. TREE DAMAGE RANGED FROM
MINOR TO SIGNIFICANT...WITH OLD GROWTH TREES LOSING
LARGE LIMBS AND NEW TREES SUSTAINING FATAL DAMAGE. POWER
OUTAGES AFFECTED ABOUT 43350 XCEL ENERGY CUSTOMERS IN
METRO DENVER. THE INTERMOUNTAIN RURAL ELECTRIC
ASSOCIATION ALSO REPORTED ABOUT 1000 POWER OUTAGES IN
THE STRASBURG AREAS. IN THE HIGH COUNTRY...CDOT SHUT
DOWN INTERSTATE 70 BETWEEN THE EISENHOWER TUNNEL AND
SILVERTHORNE DUE TO MULTIPLE CRASHES.
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