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

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CXUS53 KGRR 031301
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
755 AM EST TUE FEB 3 2015

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF JANUARY 2015...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2015

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              68   01/22/1894
 LOW              -22   01/19/1994
                        01/30/1951
HIGHEST            43   01/17        48      -5       43  01/13
LOWEST            -13   01/14        -6      -7       -9  01/28
                                                          01/03
AVG. MAXIMUM     27.8              30.7    -2.9     25.5
AVG. MINIMUM     14.5              18.1    -3.6     10.7
MEAN             21.2              24.4    -3.2     18.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     20              17.0     3.0       23
DAYS MIN <= 32     31              27.7     3.3       30
DAYS MIN <= 0       3               2.2     0.8        6

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.88   1897
 MINIMUM         0.29   1956
TOTALS           1.87              2.09   -0.22     3.41
DAILY AVG.       0.06              0.07   -0.01     0.11
DAYS >= .01        16              16.0     0.0       22
DAYS >= .10         6               6.1    -0.1       12
DAYS >= .50         0               0.8    -0.8        2
DAYS >= 1.00        0               0.1    -0.1        0
GREATEST
 24 HR. TOTAL    0.58   01/03 TO 01/04

SNOWFALL (INCHES)
RECORDS
 TOTAL           46.8   1999
 24 HR TOTAL     16.1   01/26/1978 TO 01/26/1978
 SNOW DEPTH        27   01/27/1978
TOTALS           23.2              20.8     2.4     41.9
SINCE 7/1        55.2              50.0     5.2     78.8
SNOWDEPTH AVG.      4                 5      -1       10
DAYS >= TRACE      23              14.9     8.1       27
DAYS >= 1.0         8               6.9     1.1       13
GREATEST
 SNOW DEPTH        10   01/11                         18  01/28
                        01/10                             01/27
                        01/09                             01/31
 24 HR TOTAL      5.2   01/08 TO 01/08

DEGREE_DAYS
HEATING TOTAL    1348              1258      90     1445
 SINCE 7/1       3863              3707     156     3965
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              10.6
RESULTANT WIND SPEED/DIRECTION   4/245
HIGHEST WIND SPEED/DIRECTION    32/250    DATE  01/01
HIGHEST GUST SPEED/DIRECTION    41/250    DATE  01/01

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   19
AVERAGE SKY COVER           0.80

AVERAGE RH (PERCENT)     75

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               1
HEAVY RAIN                0     RAIN                       1
LIGHT RAIN                6     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       0
HEAVY SNOW                2     SNOW                      10
LIGHT SNOW               23     SLEET                      0
FOG                      20     FOG W/VIS <= 1/4 MILE      2
HAZE                     14

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

&&

JANUARY 2015 IN SOUTHWEST LOWER MICHIGAN WAS COLDER THAN NORMAL...
WITH NEAR TO ABOVE NORMAL SNOWFALL AND BELOW AVERAGE WATER
EQUIVALENT PRECIPITATION.

THE MONTH STARTED OUT ACTIVE AS A LARGE SCALE TROUGH SETTLED OVER
THE GREAT LAKES... PROVIDING MICHIGAN WITH VERY COLD AIR AT TIMES
AND FREQUENT ALBERTA CLIPPER WEATHER SYSTEMS WITH LAKE EFFECT SNOW.
MEASURABLE SNOW WAS RECORDED AT MUSKEGON AND GRAND RAPIDS FOR EACH
OF THE FIRST 10 DAYS EXCEPT FOR JANUARY 2ND. THE MOST SIGNIFICANT
SNOW EVENT OCCURRED THE EVENING AND NIGHT OF JANUARY 8TH WHEN LAKE
MICHIGAN ENHANCED A STRONG CLIPPER SYSTEM. MANY LOCATIONS WITHIN 40
MILES EAST OF LAKE MICHIGAN RECEIVED 8 TO 14 INCHES OF SNOW... AND
WIND GUSTS OF 40 TO 55 MPH NEAR THE LAKESHORE RESULTED IN
SUBSTANTIAL BLOWING AND DRIFTING. BOTH GRAND RAPIDS AND MUSKEGON SET
DAILY RECORD SNOWFALLS ON THE 8TH.

ARCTIC AIR WITH WELL BELOW NORMAL TEMPERATURES SETTLED INTO THE
GREAT LAKES FOR MOST OF THE PERIOD FROM THE 5TH THROUGH THE 14TH.
HIGH TEMPERATURES WERE FREQUENTLY IN THE TEENS. CALM AND CLEAR
CONDITIONS ON THE MORNINGS OF THE 13TH AND 14TH RESULTED IN LOW
TEMPERATURES BELOW ZERO ACROSS THE AREA. MUSKEGON TIED AND GRAND
RAPIDS BROKE THEIR RECORD LOW TEMPERATURES ON THE 13TH. GRAND RAPIDS
FELL TO 13 DEGREES BELOW ZERO THE MORNING OF THE 14TH... ITS COLDEST
TEMPERATURE SINCE 17 BELOW ZERO WAS OBSERVED ON THE 4TH OF FEBRUARY
1996.

FROM THE MIDDLE OF THE MONTH ONWARD... CONDITIONS WARMED UP AND
QUIETED DOWN. TEMPERATURES WERE GENERALLY NEAR TO ABOVE NORMAL.
LIGHT SNOW OCCURRED PERIODICALLY... BUT THERE WERE ONLY A FEW
OCCASIONS WITH MEASURABLE SNOW.

$$

CAS/EBW







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