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

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CXUS53 KGRR 011657 CCA
CLMGRR

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1229 PM EDT FRI SEP 1 2017

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

...THE GRAND RAPIDS MI (ASOS) CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2017...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2017

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH             102   08/06/1918
 LOW               39   08/30/1976
HIGHEST            88   08/16        90      -2       92  08/10
LOWEST             47   08/25        45       2       53  08/22
AVG. MAXIMUM     79.2              80.6    -1.4     83.4
AVG. MINIMUM     58.3              61.0    -2.7     63.7
MEAN             68.7              70.8    -2.1     73.5
DAYS MAX >= 90      0               2.3    -2.3        4
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         8.46   1987
 MINIMUM         0.13   1899
TOTALS           1.72              3.59   -1.87     7.97
DAILY AVG.       0.06              0.12   -0.06     0.26
DAYS >= .01        11               9.6     1.4       11
DAYS >= .10         5               6.1    -1.1        8
DAYS >= .50         1               2.6    -1.6        6
DAYS >= 1.00        0               0.9    -0.9        3
GREATEST
 24 HR. TOTAL    0.67   08/17 TO 08/17

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   1993
 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   08/31 TO 08/31

DEGREE_DAYS
HEATING TOTAL      16                14       2        0
 SINCE 7/1         16                20      -4        0
COOLING TOTAL     140               194     -54      274
 SINCE 1/1        572               625     -53      831

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   2/242
HIGHEST WIND SPEED/DIRECTION    28/270    DATE  08/04
HIGHEST GUST SPEED/DIRECTION    33/270    DATE  08/22

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   64
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            6
NUMBER OF DAYS PC             20
NUMBER OF DAYS CLOUDY          5

AVERAGE RH (PERCENT)     73

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       4
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      2
HAZE                      2

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

&&

AUGUST 2017 TEMPERATURES WERE BELOW NORMAL FOR THE REGION AND
PRECIPITATION WAS MUCH BELOW NORMAL, IN SOME CASES LESS THAN HALF OF
THE NORMAL AMOUNT. NO MAJOR WEATHER EVENTS OCCURRED DURING THIS
MONTH AND THE ONLY LAND BASED SEVERE WEATHER WARNINGS WERE ISSUED ON
AUGUST 3. HIGH WAVE EVENTS WERE RECORDED ON THE 4TH, 18TH, AND 23RD.

THERE WERE NO MONTHLY PRECIPITATION OR TEMPERATURE RECORDS NOR ANY
DAILY RECORDS. WHILE THERE WERE SOME POCKETS OF HEAVY RAINFALL AT
TIMES, MOST OF THESE MISSED THE REPORTING STATIONS AT GRAND RAPIDS,
MUSKEGON, AND LANSING. THERE WERE SOME REPORTS OF LARGE HAIL ON
AUGUST 3 AS A LAKE BREEZE DEVELOPED OFF LAKE MICHIGAN AND
THUNDERSTORMS DEVELOPED. GOLF BALL SIZE HAIL WAS REPORTED IN ALLEGAN
COUNTY AND QUARTER SIZE HAILED WAS REPORTED IN OTTAWA COUNTY.

HIGH WAVE EVENTS CREATED HAZARDOUS BEACH CONDITIONS ON THE 4TH,
18TH, AND 23RD. THERE MAY HAVE EVEN BEEN SOME BEACH EROSION ALONG
THE COAST GIVEN HIGH LAKE LEVELS IN RECENT MONTHS.

WITH MUCH LESS THAN NORMAL RAINFALL FOR THE REGION, THE SOUTHERN
HALF OF THE LOWER PENINSULA WAS DESIGNATED AS "ABNORMALLY DRY" BY
THE UNITED STATES DROUGHT MONITOR BY THE END OF AUGUST. THIS IS
EQUIVALENT TO THE "D0" CATEGORY, ON A SCALE OF D0 TO D5. TYPICALLY
GREATER IMPACTS ARE EXPERIENCED BY THE D1 OR D2 CATEGORIES.

$$

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