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000
CXUS53 KGRR 022150
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
407 PM EST FRI MAR 1 2013

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF FEBRUARY 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              69   02/11/1999
 LOW              -24   02/14/1899
                        02/13/1899
HIGHEST            45   02/18        50      -5       50  02/01
                        02/11
LOWEST              1   02/09        -3       4        3  02/11
AVG. MAXIMUM     32.3              33.7    -1.4     38.4
AVG. MINIMUM     17.3              19.9    -2.6     25.3
MEAN             24.8              26.8    -2.0     31.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     13              12.5     0.5        3
DAYS MIN <= 32     27              24.7     2.3       23
DAYS MIN <= 0       0               1.0    -1.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.77   1898
 MINIMUM         0.21   1907
TOTALS           3.05              1.79    1.26     2.00
DAILY AVG.       0.11              0.06    0.05     0.07
DAYS >= .01        19              12.2     6.8       11
DAYS >= .10        11               4.8     6.2        5
DAYS >= .50         2               0.8     1.2        1
DAYS >= 1.00        0               0.2    -0.2        0
GREATEST
 24 HR. TOTAL    0.61   02/07 TO 02/08           02/29 TO 02/29
                                                          02/29 TO 02/29
                                                          02/29 TO 02/29

SNOWFALL (INCHES)
RECORDS
 TOTAL           41.6   2008
 24 HR TOTAL     11.3   02/03/2007 TO 02/03/2007
 SNOW DEPTH        21   02/16/1985
                        02/15/1985
                        02/14/1985
TOTALS           33.1              14.8    18.3     16.2
SINCE 7/1        57.6              64.8    -7.2     48.4
SNOWDEPTH AVG.      4                 5      -1        1
DAYS >= TRACE      22              10.7    11.3       14
DAYS >= 1.0        12               4.6     7.4        4
GREATEST
 SNOW DEPTH        10   02/08                          6  02/11
 24 HR TOTAL      5.9   MM                       02/29 TO 02/29
                                                          02/29 TO 02/29
                                                          02/29 TO 02/29

DEGREE_DAYS
HEATING TOTAL    1119              1070      49      954
 SINCE 7/1       4485              4777    -292     4137
COOLING TOTAL       0                 0       0        0
 SINCE 1/1          0                 0       0        0

FREEZE DATES
RECORD
 EARLIEST     09/03/1946
 LATEST       06/04/1945
EARLIEST                        10/13
LATEST                          05/02
..........................................................

WIND (MPH)
AVERAGE WIND SPEED              10.3
RESULTANT WIND SPEED/DIRECTION   2/228
HIGHEST WIND SPEED/DIRECTION    36/240    DATE  02/11
HIGHEST GUST SPEED/DIRECTION    47/220    DATE  02/11

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   18
AVERAGE SKY COVER           0.80

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               3
HEAVY RAIN                0     RAIN                       2
LIGHT RAIN                7     FREEZING RAIN              0
LT FREEZING RAIN          8     HAIL                       0
HEAVY SNOW                1     SNOW                      10
LIGHT SNOW               22     SLEET                      2
FOG                      24     FOG W/VIS <= 1/4 MILE      4
HAZE                     15

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

&&

RECORDS FOR GRAND RAPIDS

THE 33.1 INCHES OF SNOWFALL RECORDED THIS MONTH WAS THE 5TH SNOWIEST
FEBRUARY ON RECORD FOR GRAND RAPIDS.

&&

FEBRUARY WAS BOTH COOLER AND WETTER THAN NORMAL FOR SOUTHWEST LOWER
MICHIGAN. THE TWO MOST SIGNIFICANT SNOWSTORMS OCCURRED AT OPPOSITE
ENDS OF THE MONTH.

THE AVERAGE MONTHLY TEMPERATURE FOR FEBRUARY WAS AROUND 24
DEGREES... WHICH IS APPROXIMATELY 2 DEGREES BELOW NORMAL FOR MOST
LOCATIONS. THE FIRST WEEK OF FEBRUARY IN PARTICULAR WAS MUCH COLDER
THAN NORMAL... WITH THE FIRST THREE DAYS OF THE MONTH ALL
EXPERIENCING NEGATIVE DOUBLE DIGIT DEPARTURES FROM NORMAL. THE 7TH
OF THE MONTH WAS THE FIRST DAY TO RECORD A DAILY AVERAGE TEMPERATURE
ABOVE NORMAL. THE SECOND WEEK OF FEBRUARY WAS ACTUALLY WARMER THAN
NORMAL. A DYNAMIC WEATHER PATTERN CONTINUED TO CONTRIBUTE TO
FLUCTUATING BACK AND FORTH BETWEEN COOLER AND WARMER THAN NORMAL
TEMPERATURES WITH EACH LOW PRESSURE SYSTEM.

MANY LOCATIONS RECEIVED ABOVE NORMAL PRECIPITATION FOR FEBRUARY...
WITH A FEW LOCATIONS NEAR NORMAL. THERE WERE NO MORE THAN FIVE
CALENDAR DAYS IN WHICH NO PRECIPITATION FELL. HOWEVER... A LARGE
PORTION OF THE PRECIPITATION IN FEBRUARY FELL DURING THE FIRST
AND LAST WEEKS OF THE MONTH... WITH OFF AND ON LIGHTER PRECIPITATION
DURING THE MIDDLE PORTION OF THE MONTH.

SNOWFALL FOR SOUTHWEST LOWER MICHIGAN WAS ALSO ABOVE NORMAL FOR
FEBRUARY. MONTHLY SNOWFALL DEPARTURES FROM NORMAL TENDED TO DECREASE
WITH INCREASING DISTANCE FROM LAKE MICHIGAN... WHICH IS TYPICAL.
HOWEVER... LANSING STILL RECEIVED ABOVE NORMAL SNOWFALL. MUSKEGON
SET A RECORD FOR MONTHLY MAXIMUM SNOWFALL. MUSKEGON RECEIVED 53.2
INCHES OF SNOW IN FEBRUARY... WHICH BREAKS THE PREVIOUS FEBRUARY
RECORD OF 45.8 INCHES SET IN 1981. A GROUNDHOG DAY STORM PROVIDED
SIGNIFICANT SNOWFALL TOTALS AT THE BEGINNING OF THE MONTH. ON THE
26TH AND 27TH... SOUTHWEST LOWER MICHIGAN RECEIVED A MIX OF RAIN AND
SLEET AS PRECIPITATION MOVED IN FROM SOUTH TO NORTH. IT EVENTUALLY
CHANGED OVER TO ALL SNOW AND PROVIDED 3 TO 7 INCHES AT THE END OF
THE MONTH.

$$

JAM
EBW