Issued by NWS Denver/Boulder, CO
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000 NOUS45 KBOU 210859 PNSBOU COZ030>051-212300- PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE DENVER CO 259 AM MDT SUN SEP 21 2008 ...TODAY IN METRO DENVER WEATHER HISTORY... 20-21 IN 1963...HEAVY RAIN AND HAIL CAUSED LOCAL FLOODING IN SOUTHEAST DENVER. THUNDERSTORM RAINFALL WAS ONLY 0.60 INCH AT STAPLETON AIRPORT ON THE 20TH. IN 1983...THE COLD FRONT ON THE 19TH BROUGHT AN UNUSUALLY COLD AIR MASS INTO METRO DENVER FOR SO EARLY IN THE SEASON. THE TEMPERATURE DIPPED TO A DAILY RECORD MINIMUM OF 28 DEGREES ON BOTH DAYS. IN 1995...A VIGOROUS LATE SUMMER STORM BROUGHT THE SEASON`S FIRST HEAVY SNOW TO PORTIONS OF METRO DENVER. MILLIONS OF TREES WERE DAMAGED AND POWER LINES DOWNED AS 4 TO 8 INCHES OF HEAVY WET SNOW SETTLED ON FULLY LEAFED TREES IN THE BOULDER AND DENVER AREAS. BRANCHES SNAPPED AND TREES SPLIT UNDER THE WEIGHT OF HEAVY SNOW...DOWNING POWER LINES. FIREFIGHTERS RESPONDED TO NUMEROUS TRANSFORMER FIRES. AROUND 100 THOUSAND PEOPLE WERE LEFT WITHOUT ELECTRICITY IN BOULDER AND DENVER AREAS ALONE. IT TOOK OVER A WEEK TO FULLY RESTORE POWER TO SOME AREAS. INSURANCE CLAIMS WERE ESTIMATED TO BE AROUND 6 MILLION DOLLARS TO HOMES IN METRO DENVER AND ABOUT 500 THOUSAND DOLLARS IN DAMAGE TO AUTOMOBILES. IT WAS ESTIMATED THAT ABOUT 80 PERCENT OF 125 MILLION DOLLARS WORTH OF CITY OWNED TREES IN DENVER WERE DAMAGED. SNOWFALL TOTALED 7.4 INCHES AT THE SITE OF THE FORMER STAPLETON INTERNATIONAL AIRPORT WHERE THE GREATEST DEPTH OF SNOW ON THE GROUND WAS ONLY 4 INCHES DUE TO MELTING. TEMPERATURE RECORDS WERE SET ON THE 21ST WHEN THE THERMOMETER DIPPED TO A RECORD LOW READING OF 27 DEGREES AND CLIMBED TO A HIGH OF ONLY 36 DEGREES... SETTING A RECORD LOW MAXIMUM FOR THE DATE. NORTH WINDS GUSTED TO 29 MPH AT DENVER INTERNATIONAL AIRPORT ON THE 20TH. 20-22 IN 1902...A THUNDERSTORM ON THE 20TH...IN ADVANCE OF AN APPARENT COLD FRONT...PRODUCED RAIN...HAIL...AND NORTHWEST WINDS TO 40 MPH WITH GUSTS TO 48 MPH. WIDESPREAD RAIN DEVELOPED BEHIND THE COLD FRONT AND TOTALED 3.21 INCHES FROM THE EVENING OF THE 20TH THROUGH THE EARLY AFTERNOON OF THE 22ND. THE 2.70 INCHES OF PRECIPITATION RECORDED FROM 800 PM ON THE 20TH TO 800 PM ON THE 21ST IS THE GREATEST 24 HOUR PRECIPITATION EVER RECORDED IN THE MONTH OF SEPTEMBER. THE TEMPERATURE DIPPED FROM A HIGH OF 80 DEGREES ON THE 20TH TO A HIGH OF ONLY 51 DEGREES ON THE 21ST. 21 IN 1951...4.2 INCHES OF SNOW FELL AT STAPLETON AIRPORT... WHERE NORTHEAST WINDS GUSTED TO 27 MPH. THIS WAS THE FIRST SNOWFALL OF THE SEASON IN DENVER...MARKING THE END OF THE SECOND SHORTEST SNOW-FREE PERIOD ON RECORD...109 DAYS...FROM JUNE 4TH THROUGH SEPTEMBER 20TH. A TRACE OF SNOW FELL ON JUNE 3RD. IN 1984...THUNDERSTORM WINDS GUSTED TO 56 MPH AT STAPLETON AIRPORT. IN 1992...THE ONLY PRECIPITATION OF THE MONTH AT STAPLETON INTERNATIONAL AIRPORT...0.01 INCH OF RAIN...FELL FROM A BRIEF SHOWER AROUND DAYBREAK. 21-22 IN 1870...STRONG WINDS OCCURRED IN THE FOOTHILLS AND IN BOULDER AND DENVER. IN 1895...RAIN CHANGED TO SNOW OVERNIGHT AND TOTALED 11.4 INCHES IN DOWNTOWN DENVER. THIS WAS THE FIRST SNOWFALL OF THE SEASON AND THE SECOND HEAVIEST FIRST SNOWFALL OF THE SEASON ON RECORD. NORTH WINDS WERE SUSTAINED TO 27 MPH WITH GUSTS TO 30 MPH ON THE 21ST. $$