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

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000
CXUS53 KGRR 011231
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
808 AM EDT THU AUG 1 2013

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF JULY 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             108   07/13/1936
 LOW               41   07/06/1983
HIGHEST            96   07/19        93       3      104  07/06
LOWEST             50   07/30        48       2       60  07/29
                                                          07/21
                                                          07/11
AVG. MAXIMUM     82.8              82.8     0.0     91.1
AVG. MINIMUM     62.7              62.2     0.5     67.4
MEAN             72.7              72.5     0.2     79.2
DAYS MAX >= 90      6               3.5     2.5       18
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.83   1992
 MINIMUM         0.25   1894
TOTALS           3.21              3.78   -0.57     2.56
DAILY AVG.       0.10              0.12   -0.02     0.08
DAYS >= .01        13               9.7     3.3        7
DAYS >= .10         8               6.1     1.9        5
DAYS >= .50         2               2.5    -0.5        2
DAYS >= 1.00        0               1.0    -1.0        0
GREATEST
 24 HR. TOTAL    0.90   07/21 TO 07/21

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   1990
 24 HR TOTAL        T   MM
 SNOW DEPTH         T   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       0               0.0     0.0        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0

DEGREE_DAYS
HEATING TOTAL      11                 6       5        0
 SINCE 7/1         11                 6       5        0
COOLING TOTAL     258               239      19      449
 SINCE 1/1        489               431      58      765

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

WIND (MPH)
AVERAGE WIND SPEED              7.1
RESULTANT WIND SPEED/DIRECTION   2/237
HIGHEST WIND SPEED/DIRECTION    41/250    DATE  07/19
HIGHEST GUST SPEED/DIRECTION    54/250    DATE  07/19

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   68
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     67

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                7     RAIN                       7
LIGHT RAIN               14     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      19     FOG W/VIS <= 1/4 MILE      0
HAZE                     14

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

&&

JULY 2013 WAS HIGHLIGHTED BY LARGE TEMPERATURE SWINGS AND BELOW
NORMAL PRECIPITATION FOR MOST OF THE REGION. OVERALL...TEMPERATURES
ENDED UP BEING NORMAL.

AFTER A SOMEWHAT COOL START TO THE MONTH...THE MERCURY GRADUALLY
ROSE AS THE MIDDLE OF THE MONTH APPROACHED...AND PREDOMINANTLY DRY
CONDITIONS WERE COMMONPLACE. TEMPERATURES OF 90 DEGREES OR HIGHER
OCCURRED FOR SIX STRAIGHT DAYS AT GRAND RAPIDS. A MAXIMUM
TEMPERATURE OF 96 DEGREES OCCURRED ON THE 19TH. LOWS AT NIGHT WERE
IN THE MID TO UPPER 70S...MAKING FOR AN UNCOMFORTABLE BUT CERTAINLY
NOT UNPRECEDENTED STRETCH OF HOT WEATHER. THE HEAT WAVE ENDED WITH A
ROUND OF SEVERE THUNDERSTORMS THAT SWEPT ACROSS THE AREA ON THE 19TH.

STORMS DEVELOPED DURING THE AFTERNOON HOURS AND ALSO THE LATE NIGHT
HOURS. SEVERE WEATHER WAS REPORTED ACROSS SOUTHERN OTTAWA AND KENT
COUNTIES WITH NUMEROUS TREES BEING BLOWN DOWN AND A PEAK WIND GUST
OF 54 MPH OCCURRING AT GERALD R FORD INTL. STRONG WINDS BROUGHT DOWN
SOME TREE LIMBS AND EVEN A HEALTHY TREE EAST OF MOUNT PLEASANT. LATE
NIGHT STORMS BROUGHT DOWN TREES AND POWER LINES FROM PLAINWELL TO
KALAMAZOO AND BATTLE CREEK.

ANOTHER ROUND OF SEVERE THUNDERSTORMS AFFECTED THE PLAINWELL AND
KALAMAZOO AREAS LATE ON THE 21ST WITH NUMEROUS TREES BEING BLOWN
DOWN. ACCOMPANYING THE STORMS WAS HEAVY RAINFALL IN SOME
LOCATIONS...ALSO STRETCHING UP INTO THE GRAND RAPIDS AREA. REPORTS
OF 1 TO 2 INCHES OF RAIN IN THE GRAND RAPIDS AND KALAMAZOO AREAS
WERE COMMON. VERY HEAVY RAINFALL OF 3.8 INCHES FELL IN OSHTEMO IN
ABOUT 3 HOURS.

A STRONG COLD FRONT FOR JULY STANDARDS BROUGHT COOL TO EVEN CHILLY
AIR TO THE ENTIRE REGION FOR THE LAST WEEK OF JULY. HIGH
TEMPERATURES IN MANY LOCATIONS DID NOT MAKE IT OUT OF THE 60S FOR 2
TO 3 DAYS. A RECORD LOW TEMPERATURE OF 50 DEGREES WAS TIED AT GRAND
RAPIDS ON THE 30TH. THE COOL STRETCH OF WEATHER AT THE END OF THE
MONTH BALANCED OUT THE HEAT DURING THE MIDDLE OF THE MONTH...AND
THEREFORE TEMPERATURES AVERAGED OUT TO BE NORMAL. ACROSS MID
MICHIGAN AND CENTRAL LOWER MICHIGAN...PRECIPITATION WAS WELL BELOW
NORMAL AS MOST STORMS STEERED SOUTH AND WEST OF THE AREA. A NARROW
CORRIDOR OF WELL ABOVE NORMAL PRECIPITATION WAS FOUND ACROSS
KALAMAZOO AND CALHOUN COUNTIES.

$$

EBW









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