000
CXUS53 KGRR 011428
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
909 AM EST FRI FEB 1 2013

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF JANUARY 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              68   01/22/1894
 LOW              -22   01/19/1994
                        01/30/1951
HIGHEST            58   01/29        48      10       54  01/06
LOWEST             -2   01/22        -6       4        3  01/19
AVG. MAXIMUM     35.2              30.7     4.5     37.1
AVG. MINIMUM     20.9              18.1     2.8     22.3
MEAN             28.0              24.4     3.6     29.7
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32     13              17.0    -4.0       11
DAYS MIN <= 32     26              27.7    -1.7       28
DAYS MIN <= 0       1               2.2    -1.2        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         4.88   1897
 MINIMUM         0.29   1956
TOTALS           4.01              2.09    1.92     3.20
DAILY AVG.       0.13              0.07    0.06     0.10
DAYS >= .01        16              16.0     0.0       13
DAYS >= .10        11               6.1     4.9       12
DAYS >= .50         3               0.8     2.2        1
DAYS >= 1.00        1               0.1     0.9        0
GREATEST
 24 HR. TOTAL    1.48   01/29 TO 01/30           01/23 TO 01/23
                                                          01/14 TO 01/14


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           17.0              20.8    -3.8     27.0
 LIQUID EQUIV      MM              2.10      MM       MM
SINCE 7/1        24.5              50.0   -25.5     32.2
 LIQUID 7/1      0.75              5.00   -4.25     0.52
SNOWDEPTH AVG.      1                 5      -4        2
DAYS >= TRACE      23              14.9     8.1       17
DAYS >= 1.0         5               6.9    -1.9        9
GREATEST
 SNOW DEPTH         5   01/26                          7  01/15
 24 HR TOTAL      4.6   01/31 TO 01/31           01/14 TO 01/14


DEGREE_DAYS
HEATING TOTAL    1138              1258    -120     1088
 SINCE 7/1       3366              3707    -341     3183
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   7/242
HIGHEST WIND SPEED/DIRECTION    43/280    DATE  01/20
HIGHEST GUST SPEED/DIRECTION    52/280    DATE  01/20

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   25
AVERAGE SKY COVER           0.80
NUMBER OF DAYS FAIR            1
NUMBER OF DAYS PC             11
NUMBER OF DAYS CLOUDY         19

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       4
LIGHT RAIN                8     FREEZING RAIN              0
LT FREEZING RAIN          4     HAIL                       0
HEAVY SNOW                1     SNOW                       7
LIGHT SNOW               21     SLEET                      2
FOG                      20     FOG W/VIS <= 1/4 MILE      5
HAZE                     12

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

&&

JANUARY AVERAGED ABOVE NORMAL FOR BOTH THE TEMPERATURE AND
PRECIPITATION. SNOWFALL WAS BELOW NORMAL OVER MOST OF THE AREA.

THERE WAS CONSIDERABLE VARIABILITY WITH TEMPERATURES RUNNING WELL
ABOVE NORMAL IN BOTH THE SECOND WEEK AND TOWARD THE END OF THE
MONTH. DURING THE SECOND WEEK OF JANUARY TEMPERATURES WERE MORE
THAN 20 DEGREES ABOVE NORMAL FOR SEVERAL DAYS. MEANWHILE DURING THE
THIRD WEEK...INTO THE START OF THE FOURTH WEEK OF JANUARY...
TEMPERATURES WERE AS MUCH AS 20 DEGREES BELOW NORMAL. THAT WAS THE
COLDEST WEEK SINCE THE SECOND WEEK IN JANUARY OF 2009. MOST LOCATINS
HAD THREE TO FOUR DAYS WITH HIGHS BELOW 20. MOST LOCATIONS HAD AT
LEAST ONE DAY WITH A LOW BELOW ZERO.

PRECIPITATION WAS WELL ABOVE NORMAL...WITH SOME LOCATIONS NORTH OF
I-96 HAVING AROUND 200 PERCENT OF THE NORMAL PRECIPITATION. MOST OF
THE PRECIPITATION FELL BETWEEN THE 9TH AND 13TH AND THEN AGAIN
DURING THE LAST 10 DAYS OF THE MONTH. RECORD OR NEAR RECORD RAINFALL
OCCURRED ON THE 29TH. MUSKEGON HAD THE SECOND WETTEST JANUARY DAY ON
RECORD WITH 2.48 INCHES... THE WETTEST DAY WAS JANUARY 3RD 1897 WITH
4.90 INCHES OF RAIN. MOST OF THE AREA HAD BETWEEN 1 AND 3 INCHES OF
RAIN. THAT CAUSED CONSIDERABLE FLOODING DUE TO THE COMBINATION
HEAVY RAIN... SNOW MELT AND ICE JAM FLOODING.

SNOWFALL WAS FROM 50 TO 75 PERCENT OF NORMAL OVER THE CENTRAL AND
EASTERN SECTIONS AND 75 TO NEAR 100 PERCENT NORTH OF HOLLAND AND
WEST OF US-131. MOST OF THE SNOW THAT FELL OVER SOUTHWEST LOWER
MICHIGAN DURING JANUARY 2013 WAS EITHER LAKE ENHANCED OR LAKE
EFFECT. LITTLE IN THE WAY OF SYNOTIC SNOWFALL OCCURED. NEARLY ALL OF
THE SNOW FELL DURING THE THIRD AND FOURTH WEEK OF THE MONTH. MANY
LOCATIONS WEST OF US-131 AND NORTH OF I-94 HAD ONE TO TWO FEET OF
SNOW DURING THIS TIME. ANOTHER SYSTEM ON THE LAST DAY OF THE MONTH
BROUGHT FROM 3 TO 9 INCHES TO AREAS SOUTH AND WEST OF GRAND RAPIDS.


$$

HOVING WDM