Climatological Report (Monthly)
Issued by NWS Grand Rapids, MI

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46
000
CXUS53 KGRR 030538 CCA
CLMGRR

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

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF DECEMBER 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              69   12/05/2001
 LOW              -18   12/19/1983
HIGHEST            51   12/23        53      -2       59  12/04
LOWEST             13   12/02         1      12        3  12/16
AVG. MAXIMUM     37.3              34.8     2.5     31.4
AVG. MINIMUM     26.5              23.5     3.0     20.8
MEAN             31.9              29.2     2.7     26.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      6              11.7    -5.7       19
DAYS MIN <= 32     23              25.0    -2.0       28
DAYS MIN <= 0       0               0.7    -0.7        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         6.95   1893
 MINIMUM         0.31   1913
TOTALS           1.57              2.50   -0.93     2.70
DAILY AVG.       0.05              0.08   -0.03     0.09
DAYS >= .01        12              16.0    -4.0       21
DAYS >= .10         4               6.9    -2.9       12
DAYS >= .50         1               1.1    -0.1        1
DAYS >= 1.00        0               0.3    -0.3        0
GREATEST
 24 HR. TOTAL    0.89   12/24 TO 12/24

SNOWFALL (INCHES)
RECORDS
 TOTAL           59.2   2000
 24 HR TOTAL     15.1   12/10/1970 TO 12/11/1970
 SNOW DEPTH        22   12/27/1951
                        12/26/1951
                        12/25/1951
TOTALS            1.0              21.9   -20.9     34.7
SINCE 7/1        32.0              29.2     2.8     36.9
SNOWDEPTH AVG.      0                 3      -3        5
DAYS >= TRACE      17              13.3     3.7       23
DAYS >= 1.0         0               6.6    -6.6       12
GREATEST
 SNOW DEPTH         T   MM                            10  12/18
 24 HR TOTAL      0.7   12/31 TO 12/31

DEGREE_DAYS
HEATING TOTAL    1019              1111     -92     1198
 SINCE 7/1       2515              2449      66     2520
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        611               699     -88      767

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

WIND (MPH)
AVERAGE WIND SPEED              9.6
RESULTANT WIND SPEED/DIRECTION   3/260
HIGHEST WIND SPEED/DIRECTION    35/250    DATE  12/27
HIGHEST GUST SPEED/DIRECTION    42/250    DATE  12/31

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   27
AVERAGE SKY COVER           0.80

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                0     RAIN                       3
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          3     HAIL                       0
HEAVY SNOW                0     SNOW                       5
LIGHT SNOW               17     SLEET                      0
FOG                      22     FOG W/VIS <= 1/4 MILE      4
HAZE                     10

-  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







USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.