|
DENPNSDEN DEN TTAA KDEN DDHHMM PUBLIC INFORMATION STATEMENT NATIONAL WEATHER SERVICE DENVER CO 1015 PM MDT THU OCT 23 2008 ...A PREVIEW OF DENVER'S NOVEMBER WEATHER... ...WILL NOVEMBER BE A FALL MONTH OR A WINTER MONTH?... EVEN THOUGH NOVEMBER IS USUALLY A TRANQUIL MONTH WITH NUMEROUS PLEASANT SPRING LIKE DAYS...IT CAN ALSO BE A SNOW PACKED WINTER TYPE MONTH. IN FACT... NOVEMBER IS DENVER'S 2ND SNOWIEST MONTH. MARCH IS THE SNOWIEST DENVER MONTH AND APRIL IS BEHIND NOVEMBER IN THIRD PLACE. IN 1994...NOVEMBER WAS THE SNOWIEST MONTH OF THAT YEAR WITH 16.9 INCHES RECORDED. ON THE 13TH AND 14TH OF THE MONTH...12.1 INCHES OF SNOW WAS RECORDED DURING THE 24 HOUR PERIOD WHICH IS MORE THAN THE TOTAL OF ANY OTHER MONTH DURING THAT YEAR. IN 1991...29.6 INCHES OF SNOW WAS RECORDED MAKING IT THE 2ND SNOWIEST NOVEMBER. IN 1992...20.1 INCHES OF SNOW WAS RECORDED MAKING IT THE 8TH SNOWIEST NOVEMBER. THE SNOWIEST NOVEMBER OCCURRED IN 1946 WITH 42.6 INCHES OF SNOW RECORDED. NOVEMBER 2002 MARKED THE 16TH MONTH IN A ROW FOR BELOW NORMAL PRECIPITATION FOR DENVER. 2002 WAS THE DRIEST YEAR IN DENVER WEATHER HISTORY. THE BELOW NORMAL PRECIPITATION STREAK CONTINUED THROUGH FEBRUARY 2003 (19 MONTHS IN A ROW) NOVEMBER IS TIED WITH MAY AS THE MONTH WITH THE LEAST AMOUNT OF SUNSHINE WITH 64 PERCENT. THAT COMPARES TO SEPTEMBER THAT HAS THE MOST SUNSHINE WITH 74 PERCENT. THE AVERAGE NOVEMBER TEMPERATURE IS 37.5 DEGREES WITH AN AVERAGE HIGH OF 51.5 DEGREES AND AN AVERAGE LOW TEMPERATURE OF 23.5 DEGREES. JUST 5 YEARS AGO, NOVEMBER 1999 FINISHED AS THE SECOND WARMEST NOVEMBER WITH AN AVERAGE TEMPERATURE OF 47.1 DEGREES. AND JUST A YEAR LATER...NOVEMBER 2000 FINISHED AS THE SECOND COLDEST NOVEMBER IN DENVER WEATHER HISTORY WITH AN AVERAGE TEMPERATURE OF 28.9 DEGREES. THE COLDEST NOVEMBER OCCURRED IN 1880 WITH AN ICY 22.0 DEGREE AVERAGE TEMPERATURE WHILE THE WARMEST NOVEMBER OCCURRED IN 1949 WITH AN AVERAGE TEMPERATURE OF 50.9 DEGREES. ...LOOKING BACK TO NOVEMBER 2007... NOVEMBER 2007 WAS WARMER AND DRIER THAN NORMAL BUT NOT WARM OR DRY ENOUGH TO GET INTO ANY TOP 10 CATEGORY. THROUGH THE 20TH OF THE MONTH...NOVEMBER 2007 WAS BOUNCING AROUND AS THE SECOND WARMEST NOVEMBER. THE AVERAGE TEMPERATURE RANGED FROM 48 TO AROUND 50 DEGREES. THE WARMEST NOVEMBER OCCURRED IN 1949 WITH AN AVERAGE TEMPERATURE OF 50.9 DEGREES. THERE IS A BIG GAP BETWEEN WARMEST...50.9...AND THE SECOND WARMEST...47.1. SO NOVEMBER 2007 REMAINED AS SECOND WARMEST THROUGH NOVEMBER 20TH. THEN OLD MAN WINTER MOVED IN AND HIGH TEMPERATURES FROM THE 21ST THROUGH THE END OF THE MONTH RANGED FROM 46 DOWN TO 24 DEGREES. LOW TEMPERATURES THROUGH THIS PERIOD RANGED FROM 22 DEGREES DOWN TO 8 DEGREES. AS A RESULT...NOVEMBER 2007 WAS KNOCKED COMPLETELY OUT OF THE TOP 10 WARMEST. NOVEMBER 2007 FINISHED WITH AN AVERAGE TEMPERATURE OF 41.4 DEGREES RANGING FROM 76 DEGREES DOWN TO 8 DEGREES. THERE WERE 4 DAYS WITH MAXIMUM READINGS BELOW 32 DEGREES (AVERAGE IS 5) AND 19 DAYS WITH LOW TEMPERATURES BELOW FREEZING (AVERAGE IS 29). PRECIPITATION DURING NOVEMBER 2007 WAS QUITE DISMAL FINISHING WITH ONLY 0.20 INCH OF LIQUID EQUIVALENT...MOST OF WHICH FELL IN THE FORM OF SNOW. THIS WAS 0.78 INCH BELOW NORMAL. THERE WERE ONLY 3 DAYS WITH MEASURABLE MOISTURE WITH 0.13 INCH MEASURED ON THE 21ST. THERE WERE 7 DAYS WITH SNOWFALL OF WHICH 3 ONLY HAD TRACE AMOUNTS AND 3 MEASURED 0.2 INCH OR LESS. THE MAXIMUM SNOWFALL OCCURRED ON THE 21ST WITH A MERE 2.0 INCHES AND THE TOTAL FOR THE MONTH WAS 2.5 INCHES. THERE WERE NO THUNDERSTORMS RECORDED DURING THE MONTH. THERE WERE FOUR DAYS WHEN DENSE FOG WAS OBSERVED (VISIBILITY 1/4 MILE OR LESS) AND 5 DAYS WITH LIGHT FOG. THE PEAK WIND GUST WAS 41 MPH FROM A WESTERLY DIRECTION (290 DEGREES). ...OUTLOOK FOR NOVEMBER 2008... THE NATIONAL WEATHER SERVICE 30-DAY OUTLOOK MODEL PREDICTS NORMAL OR SLIGHTLY ABOVE NORMAL TEMPERATURES FOR NOVEMBER. BUT THE MODELS DO NOT FAVOR ANY PARTICULAR PATTERN FOR PRECIPITATION FOR NOVEMBER 2008. FOR GUIDANCE, REFER TO NORMALS LISTED BELOW. **************************************************************************** ...NOVEMBER AVERAGE STATISTICS... (NORMALS AND MEANS 1971-2000) ...TEMPERATURE... AVERAGE HIGH......................... 51.5 AVERAGE LOW.......................... 23.5 MONTHLY MEAN......................... 37.5 DAYS WITH HIGH 90 OR ABOVE........... 0 DAYS WITH HIGH 32 OR BELOW........... 3 DAYS WITH LOW 32 OR BELOW........... 24 DAYS WITH LOWS ZERO OR BELOW......... 0* (* = AVG IS LESS THAN 1) ...PRECIPITATION... MONTHLY MEAN......................... 0.98 INCH DAYS WITH MEASURABLE PRECIPITATION... 6 AVERAGE SNOWFALL..................... 10.7 INCHES (2ND SNOWIEST MONTH) DAYS WITH 1.0 INCH OR MORE SNOWFALL.. 3 **NOTE** SNOWFALL AND SUNSHINE DATA ARE COLLECTED AT THE WEATHER COOP STATION LOCATED AT THE FORMER WEATHER SERVICE FORECAST OFFICE NEAR THE FORMER STAPLETON INTERNATIONAL AIRPORT. ...MISCELLANEOUS OCTOBER AVERAGES... HEATING DEGREE DAYS.................. 826 COOLING DEGREES DAYS................. 0 WIND SPEED (MPH)..................... 8.2 WIND DIRECTION....................... SOUTH DAYS WITH THUNDERSTORMS.............. 0* (* = AVG IS LESS THAN 1) DAYS WITH DENSE FOG.................. 1 PERCENT OF SUNSHINE POSSIBLE......... 64 (TIED WITH MAY LEAST AMOUNT OF SUN) ...NOVEMBER EXTREMES... RECORD HIGH.......................... 80 DEGREES ON 11/08/2006 RECORD LOW........................... -18 DEGREES ON 11/29/1877 WARMEST.............................. 50.9 DEGREES IN 1949 MAXIMUM/MINIMUM COOLING DEGREE DAYS.. 0/0 (NONE EVER RECORDED) COLDEST.............................. 22.0 DEGREES IN 1880 MAXIMUM HEATING DEGREE DAYS.......... 1074 IN 2000 MINIMUM HEATING DEGREE DAYS.......... 425 IN 1949 WETTEST.............................. 3.21 INCHES IN 1946 MAXIMUM 24 HOUR RAINFALL............. 1.29 INCHES IN 1975 (8-9) DRIEST............................... T IN 1949, 1901, 1899 SNOWIEST............................. 42.6 INCHES IN 1946 MAXIMUM 24 HOUR SNOWFALL............. 17.7 INCHES IN 1946 (2-3) LEAST SNOWIEST....................... 0.0 IN 1949 TRACE AMOUNTS RECORDED IN 1939, 1917, 1905, 1901, 1899, 1884 BENTON |