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

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000
CXUS53 KGRR 020302
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
750 PM EDT THU MAY 1 2014

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF APRIL 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              90   04/29/1899
 LOW                3   04/07/1982
HIGHEST            78   04/21        79      -1       78  04/30
LOWEST             22   04/16        21       1       22  04/03
                                                          04/02
AVG. MAXIMUM     59.0              58.2     0.8     53.5
AVG. MINIMUM     36.2              37.7    -1.5     35.7
MEAN             47.6              48.0    -0.4     44.6
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      0               0.3    -0.3        0
DAYS MIN <= 32      9               8.6     0.4        9
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.10   2013
 MINIMUM         0.39   1942
TOTALS           2.62              3.35   -0.73    11.10
DAILY AVG.       0.09              0.11   -0.02     0.37
DAYS >= .01        12              12.7    -0.7       18
DAYS >= .10         8               7.3     0.7       14
DAYS >= .50         2               1.9     0.1        7
DAYS >= 1.00        0               0.6    -0.6        4
GREATEST
 24 HR. TOTAL    0.74   04/13 TO 04/14           04/17 TO 04/18
                                                          04/19 TO 04/19
                                                          04/19 TO 04/19

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            1.8               1.8     0.0      0.7
SINCE 7/1       116.0              74.9    41.1     66.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       4               2.0     2.0        8
DAYS >= 1.0         1               0.5     0.5        0
GREATEST
 SNOW DEPTH         2   04/15                         -1  04/20
 24 HR TOTAL      1.6   MM                       04/19 TO 04/19
                                                          04/19 TO 04/19
                                                          04/19 TO 04/19

DEGREE_DAYS
HEATING TOTAL     517               518      -1      609
 SINCE 7/1       6981              6205     776     6122
COOLING TOTAL       2                 7      -5        3
 SINCE 1/1          2                 8      -6        3

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

WIND (MPH)
AVERAGE WIND SPEED              11.4
RESULTANT WIND SPEED/DIRECTION   0/167
HIGHEST WIND SPEED/DIRECTION    38/240    DATE  04/14
HIGHEST GUST SPEED/DIRECTION    49/230    DATE  04/14

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   58
AVERAGE SKY COVER           0.60

AVERAGE RH (PERCENT)     58

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              3     MIXED PRECIP               0
HEAVY RAIN                1     RAIN                       7
LIGHT RAIN               13     FREEZING RAIN              1
LT FREEZING RAIN          1     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                4     SLEET                      0
FOG                       8     FOG W/VIS <= 1/4 MILE      1
HAZE                      7

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

&&

APRIL 2014 IN SOUTHWEST LOWER MICHIGAN WAS...OVERALL...A
STATISTICALLY AVERAGE MONTH FOR MANY AREAS. DESPITE TALLIED NUMBERS
COMING CLOSE TO NORMAL AT OFFICIAL CLIMATE SITES...PREVIOUS MONTHS
ABOVE NORMAL MOISTURE DEPARTURES AND CONTINUED LOCALIZE SURPLUSES
WOULD PROVE DETRIMENTAL TO LOWER MICHIGANS RIVERS AND TRIBUTARIES.

FOR THE FIRST TIME IN SEVERAL MONTHS...THE REGION EXPERIENCED STEADY
AND RELATIVELY MILDER TEMPERATURES. BY APRIL 12TH...THE FIRST 70
DEGREE READING OF THE YEAR WAS RECORDED IN GRAND RAPIDS. THIS WOULD
COME AT A PRICE...HOWEVER...AS SEVERE WEATHER PELTED CENTRAL LOWER
MICHIGAN. THUNDERSTORMS DEVELOPED ALONG A WARM FRONT THAT WAS DRAPED
ACROSS THE AREA. MANY LOCATIONS SUFFERED SEVERE DAMAGE WITH WIND
GUSTS ESTIMATED AT 75 TO 85 MILES PER HOUR. STORMS WOULD TRAIN OVER
SIMILAR GEOGRAPHIC LOCATIONS...LEAVING WELL OVER AN INCH OF RAIN.
ANOTHER ROUND OR RAIN WOULD HAVE TWO DAY TOTALS REACHING TWO TO
LOCALLY FIVE INCHES ACROSS CENTRAL LOWER MICHIGAN. COLDER AIR
QUICKLY CHANGED RAIN TO SNOW...WHICH BLANKETED MUCH OF SOUTHWEST
LOWER MICHIGAN WITH ONE TO THREE INCHES OF ACCUMULATION.

ONE OF THE BIGGEST STORIES FROM APRIL WAS RECORD FLOODING THAT
OCCURRED ON THE MUSKEGON RIVER...AS A RESULT OF THE TWO DAY
RAINFALL. LOCATIONS SUCH AS EVART AND CROTON FACED RAPID RISES IN
LESS THAN 48 HOURS. EVART ROSE FROM ADVISORY LEVELS ON THE EVENING
OF APRIL 12TH...TO MAJOR FLOOD STAGE BY THE AFTERNOON OF APRIL 14TH.
THE PEAK LEVEL AT EVART WAS AN ALL TIME RECORD OF 15.97 FEET ON
APRIL 16TH. DOWNSTREAM FROM EVART...AT CROTON...LEVELS QUICKLY
FOLLOWED SUIT. CROTON DAM WITNESSED NON-ADVISORY LEVELS BELOW 8 FEET
ON APRIL 12TH REACH MAJOR FLOODING BY APRIL 14TH. THE PEAK LEVEL WAS
13.10 FEET.

ANOTHER ROUND OF SEVERE WEATHER WOULD CLOSE OUT THE MONTH. ON APRIL
29TH STORMS FIRED AS A RESULT OF A WARM FRONT...AHEAD OF A
LARGE...SLOW MOVING UPPER LEVEL LOW OVER THE CENTRAL U.S. AS
THUNDERSTORMS DEVELOPED...NUMEROUS REPORTS OF HAIL WOULD FOLLOW.
MANY LOCATIONS SUCH AS SPARTA MICHIGAN AND TRUFANT MICHIGAN WOULD
SEE GOLF BALL AND PING PONG BALL SIZE HAIL. FEW...ISOLATED WIND
DAMAGE REPORTS RESULTED WITH THIS EVENT.

TEMPERATURES...THOUGH CLOSE TO NORMAL...HAD THEIR UPS AND DOWNS.
MANY DAYS WERE SLIGHT BELOW NORMAL...WHILE IN A FEW
INSTANCES...TEMPERATURES WERE WELL ABOVE NORMAL. THE FIRST SEVERAL
DAYS OF APRIL WERE STEADILY IN THE 40S AND 50S. A DECENT PUSH OF
WARMTH BROUGHT TEMPERATURES INTO THE 60S AND 70S FROM APRIL 10TH
THROUGH APRIL 14TH. DEEP COLD WOULD RETURN ON THE 15TH...RESULTING
IN RECORD LOW HIGH TEMPERATURES IN THE 30S. WARMTH RETURNED WITH 60S
AND 70S APRIL 17TH THROUGH APRIL 21ST...THEN GENERALLY SETTLED INTO
THE 50S AND 60S FOR THE REMAINDER OF THE MONTH.

PRECIPITATION WAS ABOVE NORMAL IN CENTRAL LOWER MICHIGAN WITH
AMOUNTS TAPERING OFF TO BELOW NORMAL IN SOUTHERN LOWER MICHIGAN.
SOME AREAS IN THE CENTRAL PORTION OF THE STATE WOULD NEARLY DOUBLE
THEIR NORMAL RAINFALL...WHILE SOUTHERN PORTIONS WOULD ONLY SEE HALF
THEIR NORMAL RAINFALL TOTALS.

$$

JAM







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