000
CXUS55 KBOU 021436
CLMDEN
CLIMATE REPORT
NATIONAL WEATHER SERVICE BOULDER, CO
656 AM MST FRI MAR 1 2013
...FEBRUARY 2013 ABOVE NORMAL PRECIPITATION AND BELOW NORMAL TEMPERATURES...
FEBRUARY 2013 STARTED OUT DRY WITH ABOVE NORMAL TEMPERATURES. THE
FIRST EIGHT DAYS OF THE MONTH HAD TEMPERATURES IN THE UPPER 40`S AND
50`S WITH VERY LITTLE PRECIPITATION. ONLY 0.01 INCH OF PRECIPITATION
FELL DURING THIS PERIOD FROM A WEAK UPPER LEVEL DISTURBANCE MOVING
ACROSS THE STATE. COLDER TEMPERATURES RETURNED THE REGION ON THE 9TH
AND CONTINUED THROUGH THE 12TH...AS A DEEP UPPER LEVEL LOW PRESSURE
SYSTEM AND ASSOCIATED COLD FRONT MOVED ACROSS COLORADO.
HOWEVER...THE LOW PRESSURE SYSTEM TRACKED TOO FAR TO THE
NORTH...LEAVING DENVER HIGH AND DRY. ONLY A TRACE OF PRECIPITATION
WAS RECORDED AT DENVER INTERNATIONAL AIRPORT ON THE 9TH AND 11TH.
THE UPPER LEVEL TROUGH THEN MOVED INTO THE CENTRAL UNITED STATES ON
THE 13TH...WHICH PUT COLORADO UNDER THE INFLUENCE OF A NORTHWEST
FLOW ALOFT. THIS PATTERN ALLOWED WEAK SURGES OF COLDER AIR TO MOVE
INTO NORTHEASTERN COLORADO...WHICH RESULTED IN BELOW NORMAL
TEMPERATURES AND LIGHT SNOW IN DENVER ON THE 14TH AND 15TH. ABOVE
NORMAL TEMPERATURES RETURNED TO DENVER ON THE 16TH AND 17TH AS UPPER
LEVEL HIGH PRESSURE BUILT OVER THE ROCKY MOUNTAIN REGION. THE HIGH
TEMPERATURE OF 63 DEGREES ON THE 17TH WAS THE WARMEST TEMPERATURE
RECORDED DURING THE MONTH. NORTH CENTRAL AND NORTHEASTERN COLORADO
EXPERIENCED COLDER AND WETTER WEATHER DURING THE FINAL TEN DAYS OF
THE MONTH AS A SERIES OF STORM SYSTEMS MOVED ACROSS THE ROCKY
MOUNTAIN REGION. THE FIRST STORM SYSTEM BROUGHT 0.22 INCHES OF
PRECIPITATION AND 4.0 INCHES OF SNOWFALL TO DIA FROM THE 20TH
THROUGH THE 21ST. A STRONGER STORM SYSTEM DROPPED OUT OF THE
INTERMOUNTAIN WEST INTO THE FOUR CORNERS REGION ON THE 24TH...THEN
INTO THE SOUTHERN PLAINS STATES BY THE 25TH. THIS SYSTEM PRODUCED
HEAVY SNOW ACROSS THE FRONT RANGE URBAN CORRIDOR...WITH 9.1 INCHES
RECORDED AT DENVER INTERNATIONAL AIRPORT. THE 9.1 INCHES WHICH FELL
ON THE 24TH SET A NEW DAILY SNOWFALL RECORD. A THIRD WEAKER SYSTEM
BROUGHT ANOTHER INCH OF SNOW TO DIA ON THE 26TH.
TEMPERATURES:
THE AVERAGE TEMPERATURE FOR THE MONTH OF FEBRUARY WAS 30.1 DEGREES F
WHICH WAS 2.4 DEGREES BELOW NORMAL. FEBRUARY OF 1954 IS THE WARMEST
FEBRUARY ON RECORD WITH AN AVERAGE TEMPERATURE OF 43.7 DEGREES F.
THE COLDEST FEBRUARY ON RECORD (17.6 DEGREES F) OCCURRED WAY BACK IN
1899 WHEN WILLIAM MCKINLEY WAS PRESIDENT AND THE SPANISH AMERICAN
WAR ENDED.
THERE WERE NO DAYS IN WHICH THE MAXIMUM TEMPERATURE EXCEEDED 90
DEGREES. THERE WERE 6 DAYS IN WHICH THE DAYTIME HIGH TEMPERATURE DID
NOT EXCEED 32 DEGREES F AND NO DAYS WITH LOW TEMPERATURES AT OR
BELOW ZERO DEGREES F. THE HIGHEST TEMPERATURE OF THE MONTH WAS 63
DEGREES WHICH OCCURRED ON THE 17TH. THE COLDEST TEMPERATURE OF THE
MONTH WAS 5 DEGREES BELOW ZERO ON THE MORNING OF THE 22ND. NO
TEMPERATURE RECORDS WERE SET DURING THE MONTH.
PRECIPITATION:
PRECIPITATION FOR THE MONTH OF FEBRUARY WAS 0.77 INCHES...WHICH IS
0.40 INCHES ABOVE THE NORMAL 0F 0.37 INCHES. THE WETTEST FEBRUARY ON
RECORD OCCURRED BACK IN 1934 WHEN 2.01 INCHES OF PRECIPITATION WAS
RECORDED. THE DRIEST FEBRUARY ON RECORD OCCURRED BACK IN 1970 WHEN
0.01 INCHES OF PRECIPITATION WAS RECORDED.
14.1 INCHES OF SNOW WAS RECORDED DURING THE MONTH...WHICH IS 8.2
INCHES ABOVE THE NORMAL OF 5.9 INCHES. THE SNOWIEST FEBRUARY ON
RECORD OCCURRED BACK IN 1912 WHEN 22.1 INCHES OF SNOW FELL. THE
LEAST SNOWIEST FEBRUARY ON RECORD OCCURRED BACK IN 2009 WHEN ONLY A
TRACE WAS RECORDED.
WEATHER:
THERE WERE NO THUNDERSTORMS OBSERVED AT DENVER INTERNATIONAL
AIRPORT. THERE WERE TWO DAYS WITH DENSE FOG WITH A VISIBILITY AT OR
BELOW 1/4 MILE DURING THE MONTH. A PEAK WIND OF 44 MPH FROM A
NORTHERLY DIRECTION WAS RECORDED ON THE 15TH.
---------------------------------------------------------------------
...THE DENVER CO CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2013...
CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1872 TO 2013
WEATHER OBSERVED NORMAL DEPART LAST YEAR`S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
................................................................
TEMPERATURE (F)
RECORD
HIGH 77 02/28/2006
02/04/1890
LOW -25 02/01/1951
02/08/1936
HIGHEST 63 02/17 70 -7 65 02/25
LOWEST 5 02/22 -14 19 3 02/11
AVG. MAXIMUM 43.3 46.2 -2.9 38.7
AVG. MINIMUM 16.9 18.9 -2.0 18.1
MEAN 30.1 32.5 -2.4 28.4
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 6 3.9 2.1 9
DAYS MIN <= 32 28 26.9 1.1 28
DAYS MIN <= 0 0 1.3 -1.3 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 2.01 1934
MINIMUM 0.01 1970
TOTALS 0.77 0.37 0.40 0.90
DAILY AVG. 0.03 0.01 0.02 0.03
DAYS >= .01 6 5.3 0.7 7
DAYS >= .10 4 0.7 3.3 2
DAYS >= .50 0 0.0 0.0 1
DAYS >= 1.00 0 0.0 0.0 0
GREATEST
24 HR. TOTAL 0.43 02/24 TO 02/24 02/02 TO 02/03
SNOWFALL (INCHES)
RECORDS
TOTAL 22.1 1912
TOTALS 14.1 5.7
DEGREE_DAYS
HEATING TOTAL 972 908 64 1055
SINCE 7/1 4272 4439 -167 4380
COOLING TOTAL 0 0 0 0
SINCE 1/1 0 0 0 0
FREEZE DATES
RECORD
EARLIEST 09/08/1962
LATEST 06/08/2007
EARLIEST 10/07
LATEST 05/05
....................................................
WIND (MPH)
AVERAGE WIND SPEED 10.3
RESULTANT WIND SPEED/DIRECTION 2/229
HIGHEST WIND SPEED/DIRECTION 35/360 DATE 02/15
HIGHEST GUST SPEED/DIRECTION 44/010 DATE 02/15
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER 0.60
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 16
NUMBER OF DAYS CLOUDY 7
AVERAGE RH (PERCENT) 51
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 0
LIGHT RAIN 1 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 1 SNOW 4
LIGHT SNOW 10 SLEET 0
FOG 9 FOG W/VIS <= 1/4 MILE 2
HAZE 8
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
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