Climatological Report (Monthly)
Issued by NWS Sterling, VA

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000
CXUS51 KLWX 041742
CLMIAD

CLIMATE REPORT
NATIONAL WEATHER SERVICE BALTIMORE MD/WASHINGTON DC
1240 PM EST WED MAR 4 2015

...................................

...THE WASHINGTON DULLES DC CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1962 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE
                                          NORMAL
.............................................................
TEMPERATURE (F)
RECORD
 HIGH              79   02/25/2000
                        02/24/1985
 LOW              -14   02/18/1979
HIGHEST            60   02/08        66      -6
LOWEST             -4   02/24         7     -11
AVG. MAXIMUM     35.7              46.4   -10.7     41.5
AVG. MINIMUM     15.0              26.0   -11.0     22.9
MEAN             25.4              36.2   -10.8
DAYS MAX >= 90      0               0.0     0.0
DAYS MAX <= 32      9               1.9     7.1
DAYS MIN <= 32     28              21.1     6.9
DAYS MIN <= 0       2               0.1     1.9

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.27   2003
 MINIMUM         0.25   1978
TOTALS           1.76              2.74   -0.98     3.81
DAILY AVG.       0.06              0.10   -0.04
DAYS >= .01         8               9.0    -1.0
DAYS >= .10         6               5.4     0.6
DAYS >= .50         1               1.7    -0.7
DAYS >= 1.00        0               0.7    -0.7
GREATEST
 24 HR. TOTAL    0.93   02/21 TO 02/21

SNOWFALL (INCHES)
RECORDS
 TOTAL           46.1   2010
TOTALS           16.1               7.6     8.5
SINCE 7/1        26.4              18.9     7.5
SNOWDEPTH AVG.      1
DAYS >= TRACE      11               2.6     8.4
DAYS >= 1.0         4               1.6     2.4
GREATEST
 SNOW DEPTH         7   02/22
 24 HR TOTAL      8.9

DEGREE_DAYS
HEATING TOTAL    1102               806     296      912
 SINCE 7/1       4001              3590     411     3831
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0
..............................................................

WIND (MPH)
AVERAGE WIND SPEED              8.8
HIGHEST WIND SPEED/DIRECTION    45/300    DATE  02/15
HIGHEST GUST SPEED/DIRECTION    56/300    DATE  02/15

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            4
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       0
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                2     SNOW                       3
LIGHT SNOW                9     SLEET                      3
FOG                      10     FOG W/VIS <= 1/4 MILE      2
HAZE                     10

-  INDICATES NEGATIVE NUMBERS.
R  INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T  INDICATES TRACE AMOUNT.

&&
DULLES INTERNATIONAL AIRPORT...

THE MONTHLY AVERAGE TEMPERATURE WAS WELL BELOW NORMAL AS WAS THE
MONTHLY PRECIPITATION.

THIS WAS THE SECOND COLDEST FEBRUARY ON RECORD. ONLY FEBRUARY 1979
WAS COLDER...AVERAGING 23.3 DEGREES.

IT WAS ALSO THE COLDEST MONTH OF ANY CALENDAR MONTH AT DULLES SINCE
DECEMBER 1989...WHICH HAD AN AVERAGE MONTHLY TEMPERATURE OF 23.1 DEG.

TEN COLD TEMPERATURE RECORDS WERE SET AT DULLES LAST MONTH.

A RECORD DAILY LOW TEMPERATURE OF 6 DEGREES WAS SET ON THE
15TH...BREAKING THE OLD RECORD OF 7 DEGREES SET IN 1965. ALSO...A
RECORD DAILY LOW MAXIMUM TEMPERATURE RECORD OF 18 DEGREES BROKE THE
OLD RECORD OF 22 DEGREES SET IN 1979 ON THIS DAY.

A SECOND RECORD DAILY LOW TEMPERATURE OF 6 DEGREES WAS SET ON THE
16TH...BREAKING THE OLD RECORD OF 11 DEGREES SET IN 1987. ALSO...A
RECORD DAILY LOW MAXIMUM TEMPERATURE OF 16 DEGREES BROKE THE OLD
RECORD OF 22 DEGREES SET IN 2003 ON THIS DAY.

A THIRD RECORD DAILY LOW TEMPERATURE OF 6 DEGREES WAS SET ON THE
19TH...BREAKING THE OLD RECORD OF 7 SET IN 1979. ALSO...A RECORD
DAILY MAXIMUM TEMPERATURE RECORD OF 15 DEGREES BROKE THE OLD RECORD
OF 28 DEGREES SET IN 1993.

A FOURTH RECORD DAILY LOW MAXIMUM TEMPERATURE OF 19 DEGREES WAS SET
ON THE 20TH...BREAKING THE OLD RECORD OF 26 SET IN 1972.

A FOURTH RECORD DAILY LOW TEMPERATURE OF -4 DEGREES WAS SET ON THE
24TH...BREAKING THE OLD RECORD OF 14 DEGREES SET IN 1967. THIS WAS
ALSO THE COLDEST AIR TEMPERATURE AT DULLES SINCE FEBRUARY 6TH 1996.

A RECORD DAILY LOW MAXIMUM TEMPERATURE OF 27 DEGREES WAS ALSO SET ON
THE 24TH...BREAKING THE OLD RECORD OF 28 DEGREES SET IN 1967.

A FINAL RECORD DAILY LOW TEMPERATURE WAS SET ON THE 25TH WHEN THE
TEMPERATURE DROPPED TO 6 DEGREES. THIS BROKE THE OLD RECORD OF 9
DEGREES WHICH WAS SET IN 1967.

MONTHLY SNOWFALL WAS WELL ABOVE NORMAL. THERE WAS NEARLY AS MUCH
SNOW THIS MONTH AS THERE WAS IN FEBRUARY OF 2014. THIS ALSO MARKS
THE FIRST TIME BACK-TO-BACK FEBRUARIES HAD ABOVE NORMAL SNOWFALL
SINCE 2006-2007.

A RECORD DAILY MAXIMUM SNOWFALL OF 8.9 INCHES WAS SET ON THE
21ST...BREAKING THE OLD RECORD OF 2.7 INCHES SET IN 1993. A RECORD
DAILY MAXIMUM RAINFALL (LIQUID EQUIVALENT) OF 0.93 INCHES WAS ALSO
SET ON THIS DAY...BREAKING THE OLD RECORD OF 0.85 FROM 1993.

$$
DFH/SMZ



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