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

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000
CXUS53 KGRR 011212
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
658 AM EST SUN DEC 1 2013

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF NOVEMBER 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              81   11/01/1950
 LOW              -10   11/25/1950
HIGHEST            64   11/17        66      -2       71  11/11
LOWEST             15   11/29        16      -1       20  11/27
AVG. MAXIMUM     44.9              47.3    -2.4     48.6
AVG. MINIMUM     30.7              33.0    -2.3     31.5
MEAN             37.8              40.1    -2.3     40.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      5               1.8     3.2        0
DAYS MIN <= 32     16              14.5     1.5       20
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         7.90   2003
 MINIMUM         0.06   1904
TOTALS           3.75              3.51    0.24     0.49
DAILY AVG.       0.12              0.12    0.00     0.02
DAYS >= .01        12              13.2    -1.2        3
DAYS >= .10         7               7.3    -0.3        2
DAYS >= .50         2               2.3    -0.3        0
DAYS >= 1.00        2               0.7     1.3        0
GREATEST
 24 HR. TOTAL    1.50   11/16 TO 11/17

SNOWFALL (INCHES)
RECORDS
 TOTAL           26.9   1951
 24 HR TOTAL     11.5   11/20/2000 TO 11/20/2000
 SNOW DEPTH        13   11/21/2000
TOTALS            2.2               6.8    -4.6      0.3
SINCE 7/1         2.2               7.3    -5.1      0.3
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE      14               4.2     9.8        9
DAYS >= 1.0         1               2.0    -1.0        0
GREATEST
 SNOW DEPTH         1   11/29                          0  MM
                        11/28
 24 HR TOTAL      1.4   11/28 TO 11/28

DEGREE_DAYS
HEATING TOTAL     808               746      62      739
 SINCE 7/1       1322              1338     -16     1309
COOLING TOTAL       0                 0       0        0
 SINCE 1/1        767               699      68     1039

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

WIND (MPH)
AVERAGE WIND SPEED              11.0
RESULTANT WIND SPEED/DIRECTION   5/232
HIGHEST WIND SPEED/DIRECTION    46/260    DATE  11/17
HIGHEST GUST SPEED/DIRECTION    63/280    DATE  11/17

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   34
AVERAGE SKY COVER           0.70

AVERAGE RH (PERCENT)     68

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       6
LIGHT RAIN               12     FREEZING RAIN              0
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       2
LIGHT SNOW               13     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      1
HAZE                      8

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

&&

NOVEMBER ENDED UP BEING COOLER THAN NORMAL WITH NEAR NORMAL
PRECIPITATION. SNOWFALL WAS ABOVE NORMAL NEAR THE LAKE SHORE WITH
BELOW NORMAL AMOUNTS INLAND.

THE MAIN HIGHLIGHTS OF THE MONTH INCLUDED A LATE SEASON SEVERE
WEATHER OUTBREAK ON THE 17TH AND THE FIRST SIGNIFICANT SNOWFALL OF
THE SEASON FOR THE LAKE SHORE COMMUNITIES ON THANKSGIVING DAY. ON
THE 17TH...A VERY DEEP LOW PRESSURE SYSTEM MOVED THROUGH THE GREAT
LAKES REGION BRINGING UNSEASONABLY WARM AIR AND MOISTURE TO THE
AREA. TEMPERATURES STARTED THE DAY IN THE 50S AND 60S. THUNDERSTORMS
DEVELOPED WEST OF THE STATE DURING THE AFTERNOON HOURS AND RACED
EASTWARD. A SQUALL LINE FORMED WHICH PRODUCED WIND GUSTS IN THE 50
TO 60 MPH RANGE...BUT ALSO HELPED SPAWN SOME TORNADOES.

THE ENTIRE SOUTHWEST PORTION OF THE STATE OF MICHIGAN WAS PLACED IN
EITHER A MODERATE OR HIGH RISK FOR SEVERE WEATHER...A RARITY FOR OUR
AREA AND EVEN MORE SO FOR NOVEMBER. DESTRUCTIVE STORMS MOVED THROUGH
DURING THE AFTERNOON HOURS AND PRODUCED WIDESPREAD WIND DAMAGE AS
WELL AS A FEW EF-0 TORNADOES. THE TORNADOES WERE DETERMINED TO HAVE
TOUCHED DOWN IN FAR EASTERN MUSKEGON COUNTY...SOUTHERN NEWAYGO
COUNTY...AND POSSIBLY INTO MECOSTA...CLARE...AND ISABELLA COUNTIES.
IN ADDITION...EMERGENCY MANAGEMENT IN INGHAM COUNTY DETERMINED A
BRIEF TORNADO TOUCHED DOWN IN LESLIE. THE TORNADOES PRODUCED SOME
EXTENSIVE TREE DAMAGE AS WELL AS MINOR STRUCTURAL DAMAGE. STRAIGHT
LINE WIND DAMAGE WAS REPORTED IN THE MATTAWAN AREA AS WELL AS OTHER
AREAS IMPACTED BY THE SQUALL LINE. STRONG WINDS DEVELOPED LATER THAT
NIGHT IN ASSOCIATION WITH PRESSURE GRADIENT FORCE...PRODUCING WIND
GUSTS OVER 60 MPH ACROSS PORTIONS OF WEST MICHIGAN AND KNOCKING OUT
POWER TO TENS OF THOUSANDS.

COLD ARCTIC AIR DOMINATED THE FINAL WEEK OF THE MONTH...HELPING
GENERATE SNOWFALL BY THANKSGIVING. THE REGION RECEIVED WIDESPREAD 1
TO 3 INCHES WITH THE LAKE SHORE RECEIVING FAR MORE...IN SOME CASES 5
TO 8 INCHES. THIS MADE FOR A WHITE THANKSGIVING AND A RECORD
BREAKING ONE AT MUSKEGON...WITH 6.5 INCHES FALLING ON THE SNOWIEST
THANKSGIVING RECORDED.

$$

EBW/HOVING









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