Climatological Report (Monthly)
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CXUS53 KGRR 011558 AAA
CLMJXN

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

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

...THE JACKSON MI CLIMATE SUMMARY FOR THE MONTH OF APRIL 2018...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1944 TO 9999

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
HIGHEST            73   04/23        MM      MM       81  04/26
                        04/12                             04/15
LOWEST             15   04/08        MM      MM       29  04/08
AVG. MAXIMUM     50.9              58.7    -7.8     63.4
AVG. MINIMUM     30.7              36.9    -6.2     42.8
MEAN             40.8              47.8    -7.0     53.1
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.3    -0.3        0
DAYS MIN <= 32     21               9.7    11.3        2
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
TOTALS           2.72              2.61    0.11     4.93
DAILY AVG.       0.09              0.09    0.00     0.16
DAYS >= .01        11              11.8    -0.8       11
DAYS >= .10         3               6.6    -3.6        9
DAYS >= .50         3               1.5     1.5        4
DAYS >= 1.00        0               0.3    -0.3        0
GREATEST
 24 HR. TOTAL    0.87   04/03 TO 04/03

DEGREE_DAYS
HEATING TOTAL     719               522     197      354
 SINCE 7/1       6399              6346      53     5278
COOLING TOTAL       0                 6      -6        7
 SINCE 1/1          0                 6      -6        7
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              8.6
RESULTANT WIND SPEED/DIRECTION   2/280
HIGHEST WIND SPEED/DIRECTION    32/220    DATE  04/12
HIGHEST GUST SPEED/DIRECTION    42/220    DATE  04/12

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.50
NUMBER OF DAYS FAIR           12
NUMBER OF DAYS PC              7
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              1     MIXED PRECIP               0
HEAVY RAIN                3     RAIN                       3
LIGHT RAIN               10     FREEZING RAIN              1
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       1
LIGHT SNOW                9     SLEET                      0
FOG                      18     FOG W/VIS <= 1/4 MILE      2
HAZE                      9

-  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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