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

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CXUS53 KGRR 011550 AAA
CLMGRR

CLIMATE REPORT...UPDATED
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1045 AM EDT TUE MAY 1 2018

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

...THE GRAND RAPIDS MI (ASOS) CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2018

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              90   04/29/1899
 LOW                3   04/07/1982
HIGHEST            74   04/23        79      -5       81  04/26
LOWEST             16   04/08        21      -5       27  04/08
AVG. MAXIMUM     49.3              58.2    -8.9     62.1
AVG. MINIMUM     30.8              37.7    -6.9     41.7
MEAN             40.1              48.0    -7.9     51.9
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      1               0.3     0.7        0
DAYS MIN <= 32     20               8.6    11.4        4
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.10   2013
 MINIMUM         0.39   1942
TOTALS           2.85              3.35   -0.50     6.27
DAILY AVG.       0.09              0.11   -0.02     0.21
DAYS >= .01        13              12.7     0.3       14
DAYS >= .10         5               7.3    -2.3       10
DAYS >= .50         3               1.9     1.1        5
DAYS >= 1.00        0               0.6    -0.6        2
GREATEST
 24 HR. TOTAL    0.87   04/14 TO 04/14

SNOWFALL (INCHES)
RECORDS
 TOTAL           15.6   1961
 24 HR TOTAL      9.8   04/02/1975 TO 04/03/1975
 SNOW DEPTH        10   04/03/1975
TOTALS            6.0               1.8     4.2      0.4
SINCE 7/1        77.7              74.9     2.8     60.1
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE      13               2.0    11.0        2
DAYS >= 1.0         3               0.5     2.5        0
GREATEST
 SNOW DEPTH         2   04/17                         -1  04/06
 24 HR TOTAL      1.6   04/04 TO 04/04

DEGREE_DAYS
HEATING TOTAL     740               518     222      391
 SINCE 7/1       6339              6205     134     5366
COOLING TOTAL       0                 7      -7        5
 SINCE 1/1          0                 8      -8        5

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

WIND (MPH)
AVERAGE WIND SPEED              10.3
RESULTANT WIND SPEED/DIRECTION   3/307
HIGHEST WIND SPEED/DIRECTION    37/070    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    48/080    DATE  04/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   54
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR            5
NUMBER OF DAYS PC             12
NUMBER OF DAYS CLOUDY         13

AVERAGE RH (PERCENT)     63

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       3
LIGHT RAIN               10     FREEZING RAIN              1
LT FREEZING RAIN          3     HAIL                       1
HEAVY SNOW                0     SNOW                       5
LIGHT SNOW               12     SLEET                      3
FOG                      16     FOG W/VIS <= 1/4 MILE      2
HAZE                      4

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

&&

APRIL 2018 WAS COLDER THAN NORMAL, WITH NEAR NORMAL PRECIPITATION,
AND GREATER THAN NORMAL SNOWFALL. MULTIPLE SYSTEMS MOVED THROUGH THE
AREA MAINLY IN THE FIRST HALF OF THE MONTH, WITH MUCH BELOW NORMAL
TEMPERATURE AIR RESULTING IN ABOVE NORMAL SNOW EARLY IN THE MONTH
AND SIGNIFICANT ICING IN MID MONTH. SOME SMALL HAIL AND SLEET ALSO
FELL DURING THE MONTH, BUT NO SEVERE WEATHER OCCURRED.

AVERAGE TEMPERATURES ACROSS SOUTHWEST LOWER MICHIGAN GENERALLY
RANGED FROM 35 TO 40 DEGREES IN APRIL. THIS IS 6 TO 10 DEGREES BELOW
NORMAL. THE AVERAGE TEMPERATURE FOR APRIL IN GRAND RAPIDS WAS THE
FOURTH COLDEST ON RECORD AT 40.1 DEGREES. LANSING AT 40.3 DEGREES
WAS TIED FOR THE 8TH COLDEST ON RECORD AND MUSKEGON AT 38.3 DEGREES
WAS THE 3RD COLDEST ON RECORD.

MEANWHILE, PRECIPITATION TOTALS RANGED FROM 2 1/2 INCHES IN THE FAR
SOUTHWEST OF LOWER MICHIGAN TO ALMOST 5 INCHES IN CENTRAL LOWER
MICHIGAN. THESE VALUES ARE LESS THAN AN INCH FROM WHAT IS NORMAL.

SNOWFALL ACCUMULATIONS RANGED FROM AROUND AN INCH IN THE SOUTH TO 15
INCHES IN CENTRAL LOWER MICHIGAN FOR APRIL 2018. THESE TOTALS RANGED
FROM AROUND NORMAL IN THE SOUTH TO OVER 10 INCHES ABOVE NORMAL IN
CENTRAL LOWER. THE 7.5 INCHES RECORDED IN MUSKEGON WAS ABOUT 5
INCHES ABOVE NORMAL AND WAS THE 3RD MOST ON RECORD. LANSING AND
GRAND RAPIDS FAILED TO BREAK INTO THEIR TOP TENS FOR SNOWFALL.

$$

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