Climatological Report (Monthly)
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CXUS53 KGRR 030544 CCA
CLMMKG

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
616 AM EST THU JAN 1 2015

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

...THE MUSKEGON MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1896 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              66   12/03/2012
 LOW              -15   12/31/1976
HIGHEST            50   12/15        51      -1       58  12/04
LOWEST             13   12/02         5       8        9  12/16
                        12/01
AVG. MAXIMUM     37.6              35.1     2.5     31.7
AVG. MINIMUM     27.9              25.3     2.6     21.1
MEAN             32.7              30.2     2.5     26.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      6              10.9    -4.9       19
DAYS MIN <= 32     22              23.8    -1.8       29
DAYS MIN <= 0       0               0.2    -0.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.99   2008
 MINIMUM         0.47   1930
TOTALS           1.72              2.55   -0.83     2.70
DAILY AVG.       0.06              0.08   -0.02     0.09
DAYS >= .01        11              15.7    -4.7       22
DAYS >= .10         4               7.1    -3.1       10
DAYS >= .50         1               1.0     0.0        0
DAYS >= 1.00        0               0.3    -0.3        0
GREATEST
 24 HR. TOTAL    0.63   12/22 TO 12/23

SNOWFALL (INCHES)
RECORDS
 TOTAL           82.6   1963
 24 HR TOTAL     14.8   12/17/1963 TO 12/17/1963
 SNOW DEPTH        34   12/20/1963
TOTALS            1.4              28.9   -27.5     39.2
SINCE 7/1        25.9              35.1    -9.2     48.1
SNOWDEPTH AVG.      0                 4      -4        6
DAYS >= TRACE      13              12.9     0.1       23
DAYS >= 1.0         0               8.6    -8.6       15
GREATEST
 SNOW DEPTH         1   12/09                         15  12/27
 24 HR TOTAL      0.9   12/08 TO 12/08

DEGREE_DAYS
HEATING TOTAL     992              1079     -87     1193
 SINCE 7/1       2475              2446      29     2464
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        442               566    -124      626

FREEZE DATES
RECORD
 EARLIEST     09/22/1976
 LATEST       06/22/1992
EARLIEST                        10/14
LATEST                          05/04
......................................................

WIND (MPH)
AVERAGE WIND SPEED              9.4
RESULTANT WIND SPEED/DIRECTION   2/263
HIGHEST WIND SPEED/DIRECTION    30/220    DATE  12/31
HIGHEST GUST SPEED/DIRECTION    40/230    DATE  12/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         18

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW               13     SLEET                      1
FOG                      21     FOG W/VIS <= 1/4 MILE      4
HAZE                      8

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

&&

DECEMBER 2014 WAS A RELATIVELY QUIET MONTH. ABOVE NORMAL
TEMPERATURES... BELOW NORMAL PRECIPITATION... AND WELL BELOW NORMAL
SNOWFALL WAS THE STORY ACROSS THE AREA.

DECEMBER STARTED OUT ON THE COOL SIDE OF NORMAL BUT GRADUALLY WARMED
UP TO WELL ABOVE NORMAL BY MID-MONTH. A FEW EPISODES OF
PRECIPITATION AND MINOR SNOW ACCUMULATIONS OCCURRED IN THE FIRST
HALF OF THE MONTH. AFTER SEVERAL DAYS WITH TEMPERATURES IN THE
40S... MORE SEASONABLE AIR RETURNED ON THE 17TH AND STAYED THROUGH
THE 22ND. OCCASIONAL LIGHT SNOW AND FREEZING DRIZZLE ACCOMPANIED THE
COOLER AIR. A LARGE STORM SYSTEM AFFECTED THE AREA FROM THE 23RD
INTO THE 25TH. THIS SYSTEM HAD TOO MUCH WARM AIR TO PRODUCE
SIGNIFICANT SNOW ACCUMULATIONS ACROSS THE AREA... THOUGH IT DID
PRODUCE THREE QUARTERS TO ONE INCH OF RAIN AND UP TO A HALF INCH OF
SNOW. TEMPERATURES WERE AGAIN WELL ABOVE NORMAL FROM THE 23RD
THROUGH THE 27TH. THE MONTH ENDED WITH A SHARP COOL DOWN AND LIGHT
ACCUMULATING LAKE EFFECT SNOW.

THIS WAS GENERALLY AMONG THE TOP 5 LEAST SNOWY DECEMBERS ACROSS THE
AREA... DUE TO A LACK OF SIGNIFICANT LAKE-EFFECT SNOW AND A LACK OF
SNOW-PRODUCING STORM SYSTEMS. IN MUSKEGON... THIS WAS THE LEAST
SNOWY DECEMBER ON RECORD. REMARKABLY... THIS LARGELY UNEVENTFUL
MONTH FOLLOWED THE SNOWIEST NOVEMBER ON RECORD IN GRAND RAPIDS AND
THE SECOND SNOWIEST NOVEMBER IN MUSKEGON.

$$

CAS/EBW






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