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

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CXUS53 KGRR 011634
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1220 PM EDT SUN JUN 1 2014

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF MAY 2014...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2014

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              98   05/30/1895
 LOW               21   05/01/1903
HIGHEST            88   05/31        85       3       88  05/20
LOWEST             32   05/16        31       1       29  05/13
AVG. MAXIMUM     70.1              69.5     0.6     73.6
AVG. MINIMUM     48.6              47.8     0.8     51.4
MEAN             59.3              58.7     0.6     62.5
DAYS MAX >= 90      0               0.3    -0.3        0
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      1               0.7     0.3        1
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        10.01   2001
 MINIMUM         0.72   1936
TOTALS           3.31              3.98   -0.67     3.59
DAILY AVG.       0.11              0.13   -0.02     0.12
DAYS >= .01        12              11.2     0.8       14
DAYS >= .10         9               7.0     2.0        8
DAYS >= .50         1               2.3    -1.3        2
DAYS >= 1.00        1               0.9     0.1        1
GREATEST
 24 HR. TOTAL    1.24   05/07 TO 05/07           05/28 TO 05/29


SNOWFALL (INCHES)
RECORDS
 TOTAL            5.5   1923
                        1902
 24 HR TOTAL      5.5   05/09/1923 TO 05/09/1923
                        05/10/1902 TO 05/10/1902
 SNOW DEPTH         T   MM
TOTALS            0.0                 T     0.0        T
SINCE 7/1       116.0              74.9    41.1     66.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       0               0.1    -0.1        1
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   MM                     05/20 TO 05/20


DEGREE_DAYS
HEATING TOTAL     219               235     -16      149
 SINCE 7/1       7200              6440     760     6271
COOLING TOTAL      51                39      12       79
 SINCE 1/1         53                47       6       82

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

WIND (MPH)
AVERAGE WIND SPEED              9.3
RESULTANT WIND SPEED/DIRECTION   2/248
HIGHEST WIND SPEED/DIRECTION    31/250    DATE  05/09
HIGHEST GUST SPEED/DIRECTION    39/200    DATE  05/09

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   63
AVERAGE SKY COVER           0.60

AVERAGE RH (PERCENT)     65

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              5     MIXED PRECIP               0
HEAVY RAIN                4     RAIN                       5
LIGHT RAIN               17     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       1
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      12     FOG W/VIS <= 1/4 MILE      0
HAZE                      7

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

&&

MAY 2014 EXPERIENCED TEMPERATURES AROUND NORMAL AND PRECIPITATION
AROUND TO 50 PERCENT ABOVE NORMAL. NO MONTHLY RECORDS WERE ACHIEVED
AT ANY OF THE MAIN CLIMATE SITES.

THE BEGINNING OF THE MONTH WAS DOMINATED BY SLOW MOVING FRONTAL
SYSTEMS. THIS LEAD TO SIGNIFICANT PRECIPITATION AND LARGE
VARIABILITY IN TEMPERATURES. THE LAST LARGE PUSH OF COLD AIR FROM
CANADA CAME NEAR MID MONTH WITH NEAR FREEZING TEMPERATURES. A
TRANSITION TO SPRING FOLLOWED WITH A SLOW WARM UP. TEMPERATURES WERE
LESS VARIABLE FOR THE REST OF MAY WITH VALUES MOSTLY ABOVE NORMAL.

NO SNOW FELL IN MAY EVEN THOUGH MOST OF THE PRECIPITATION FELL IN
THE FIRST HALF OF THE MONTH... AS WINTER GAVE ITS LAST GASP. THOUGH
LITTLE PRECIPITATION FELL LATER IN MAY... PRECIPITATION TOTALS WERE
NEAR TO ABOVE NORMAL THANKS TO THE ACTIVE WEATHER EARLY IN THE MONTH.

LITTLE IN THE WAY OF SEVERE WEATHER OCCURRED IN MAY 2014. A FEW OF
THE SYSTEMS THAT PASSED THROUGH THE AREA HAD HAIL WITH DIAMETERS OF
AN INCH TO AN INCH AND A HALF. STRONG WINDS ALSO KNOCKED OVER A TREE
OR TWO. THE MAIN HAZARD FOR THE MONTH WAS AREAL AND RIVER FLOODING.
THE MAIN FLOOD AREA STRETCHED FROM WEST CENTRAL LOWER MICHIGAN INTO
SOUTH EAST LOWER MICHIGAN.

$$

63






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