656  
NOUS45 KBOU 200859  
PNSBOU  
COZ030>051-202300-  
 
PUBLIC INFORMATION STATEMENT  
NATIONAL WEATHER SERVICE DENVER/BOULDER CO  
259 AM MDT FRI OCT 20 2017  
   
..TODAY IN METRO DENVER WEATHER HISTORY
 
 
18-23 IN 2003...AN EXTENDED WARM SPELL RESULTED IN 5 NEW TEMPERATURE  
RECORDS. THE HIGH TEMPERATURE OF 84 DEGREES ON THE 18TH  
EQUALED THE RECORD HIGH FOR THE DATE. HIGH TEMPERATURES  
OF 86 DEGREES ON THE 19TH...83 DEGREES ON THE 21ST...AND 84  
DEGREES ON THE 22ND WERE RECORD HIGHS FOR THE DATES. LOW  
TEMPERATURE OF 49 DEGREES ON THE 23RD WAS A RECORD HIGH  
MINIMUM FOR THE DATE. LOW TEMPERATURES DURING THE PERIOD  
WERE IN THE 40'S AND LOWER 50'S.  
19-20 IN 1990...AN EARLY WINTER STORM DUMPED HEAVY SNOW ACROSS  
METRO DENVER. SNOWFALL AMOUNTS RANGED FROM 4 TO 8 INCHES  
IN THE FOOTHILLS ABOVE 6500 FEET ELEVATION...4 TO 7 INCHES  
IN THE CASTLE ROCK AREA...AND 2 TO 5 INCHES ACROSS MOST OF  
METRO DENVER AND BOULDER. SNOWFALL TOTALED 3.6 INCHES AT  
STAPLETON INTERNATIONAL AIRPORT WHERE NORTHWEST WINDS  
GUSTING TO 48 MPH KICKED UP SOME BLOWING DUST SHORTLY  
AFTER A COLD FRONTAL PASSAGE ON THE 19TH. HOWEVER...  
TEMPERATURES WERE WARM ENOUGH TO KEEP MOST ROADWAYS WET  
AND SLUSHY AT LOWER ELEVATIONS.  
19-23 IN 1906...HEAVY SNOWFALL TOTALED 22.7 INCHES IN THE CITY OVER  
THE 5 DAYS. RAIN CHANGED TO SNOW ON THE EVENING OF THE  
19TH...AND SNOW CONTINUED THROUGH THE LATE AFTERNOON OF THE  
23RD. THE HEAVIEST AMOUNT OF SNOWFALL...16.0 INCHES...FELL  
FROM 8:00 PM ON THE 20TH TO 8:00 PM ON THE 22ND. THE MOST  
SNOW ON THE GROUND WAS 13.3 INCHES ON THE EVENING OF THE  
23RD. THIS WAS THE FIRST SNOW OF THE SEASON AND THE ONLY  
SNOW OF THE MONTH. WINDS DURING THE STORM WERE FROM THE  
NORTH AT SUSTAINED SPEEDS OF 20 TO 30 MPH EACH DAY.  
TEMPERATURES DURING THE STORM WERE GENERALLY IN THE 20'S.  
20 IN 1878...BETWEEN 3:00 PM AND 4:00 PM WIND SPEEDS AVERAGED  
48 MPH WITH A MAXIMUM 1 MINUTE SUSTAINED VELOCITY TO 96  
MPH AT BOTH 3:27 PM AND 3:48 PM IN DOWNTOWN DENVER. THIS  
IS THE HIGHEST SUSTAINED WIND SPEED EVER RECORDED IN THE  
CITY.  
IN 1986...A RARE LATE OCTOBER THUNDERSTORM PRODUCED 3/4 INCH  
DIAMETER HAIL AT CENTENNIAL AIRPORT. HAIL PILED UP 2 1/2  
INCHES DEEP...CAUSING SOME STREET FLOODING IN SOUTH METRO  
DENVER.  
20-21 IN 2007...A STORM SYSTEM BROUGHT HEAVY SNOW TO THE SOUTHERN  
DENVER SUBURBS AS WELL AS THE PALMER DIVIDE SOUTH OF  
DENVER. STORM TOTALS INCLUDED: 7.5 INCHES NEAR CASTLE  
ROCK...LONE TREE AND GREENWOOD VILLAGE...WITH 6.5 INCHES AT  
ELIZABETH. SNOW DRIFTS UP TO 2 FEET DEEP WERE OBSERVED 6  
MILES SOUTH-SOUTHWEST OF ELIZABETH. IN THE DENVER  
STAPLETON AREA...2.0 INCHES OF SNOW WAS OBSERVED.  
IN 2009...HEAVY SNOW DEVELOPED ALONG THE PALMER DIVIDE  
SOUTH AND SOUTHEAST OF DENVER AS A STORM SYSTEM TRACKED  
ACROSS SOUTHERN COLORADO AND NORTHERN NEW MEXICO.  
STORM TOTALS INCLUDED: 15 INCHES...15 MILES NORTH OF  
ELIZABETH...9 INCHES...5 MILES SOUTH-SOUTHWEST OF ARAPAHOE  
PARK; 8 INCHES IN HIGHLANDS RANCH...5 MILES SOUTH-  
SOUTHEAST OF SEDALIA; 6.5 INCHES...8 MILES SOUTHWEST OF  
BENNETT AND 6 INCHES IN PARKER. AT DENVER INTERNATIONAL...  
ONLY 1.5 INCHES OF SNOWFALL WAS OBSERVED.  
20-22 IN 1936...5.5 INCHES OF SNOW FELL OVER DOWNTOWN DENVER.  
MOST OF THE SNOW...4.5 INCHES...FELL ON THE 20TH.  
 

 
 
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