000
CXUS53 KGRR 011811 CCA
CLMMKG

CLIMATE REPORT...CORRECTED
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
113 PM EDT WED MAY 1 2013

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

...THE MUSKEGON MI CLIMATE SUMMARY FOR THE MONTH OF APRIL 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1895 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              86   04/29/1970
 LOW                1   04/07/1982
HIGHEST            81   04/30        76       5       72  04/15
LOWEST             21   04/03        20       1       27  04/29
                        04/02
AVG. MAXIMUM     51.9              55.9    -4.0     57.7
AVG. MINIMUM     35.5              37.3    -1.8     37.3
MEAN             43.7              46.6    -2.9     47.5
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        7
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.05   1909
 MINIMUM         0.10   1936
TOTALS           7.43              2.91    4.52     2.28
DAILY AVG.       0.25              0.10    0.15     0.08
DAYS >= .01        18              12.1     5.9       12
DAYS >= .10        11               6.7     4.3        4
DAYS >= .50         7               1.7     5.3        2
DAYS >= 1.00        2               0.4     1.6        1
GREATEST
 24 HR. TOTAL    2.68   04/17 TO 04/18           04/15 TO 04/16
                                                          04/10 TO 04/10
                                                          04/10 TO 04/10

SNOWFALL (INCHES)
RECORDS
 TOTAL           20.4   1982
 24 HR TOTAL     12.2   04/05/1982 TO 04/05/1982
 SNOW DEPTH        13   04/06/1982
TOTALS              T               2.3    -2.3        T
SINCE 7/1        98.6              93.7     4.9     55.7
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       7               1.7     5.3        1
DAYS >= 1.0         0               0.5    -0.5        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL        T   04/24 TO 04/24           04/10 TO 04/10
                                                          04/10 TO 04/10
                                                          04/10 TO 04/10

DEGREE_DAYS
HEATING TOTAL     634               556      78      518
 SINCE 7/1       6090              6218    -128     5025
COOLING TOTAL       4                 4       0        0
 SINCE 1/1          4                 4       0       27

FREEZE DATES
RECORD
 EARLIEST     09/22/1976
 LATEST       06/22/1992
EARLIEST                        10/14
LATEST                          05/04
.................................................

WIND (MPH)
AVERAGE WIND SPEED              11.1
RESULTANT WIND SPEED/DIRECTION   2/209
HIGHEST WIND SPEED/DIRECTION    35/070    DATE  04/11
HIGHEST GUST SPEED/DIRECTION    45/170    DATE  04/18

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   MM
AVERAGE SKY COVER           0.60
NUMBER OF DAYS FAIR           10
NUMBER OF DAYS PC              9
NUMBER OF DAYS CLOUDY         11

AVERAGE RH (PERCENT)     66

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              0     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       9
LIGHT RAIN               18     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                6     SLEET                      0
FOG                      15     FOG W/VIS <= 1/4 MILE      4
HAZE                      3

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

&&

RECORDS...
THIS WAS THE SECOND WETTEST APRIL ON RECORD FOR MUSKEGON WITH 7.43
INCHES OF PRECIPITATION. THE RECORD OF 8.05 INCHES WAS REACHED
IN 1909.

SUMMARY...
APRIL OF 2013 WILL BE REMEMBERED FOR EXTENSIVE FLOODING ACROSS THE
AREA. THE FLOODING RESULTED FROM HEAVY RAINFALL DURING THE MIDDLE OF
THE MONTH. THIS ALSO RESULTED IN APRIL 2013 BEING ONE OF THE WETTEST
MONTHS ON RECORD ACROSS THE AREA. MANY LOCATIONS HAD OVER TEN INCHES
OF RAIN. APRIL 2013 WAS ALSO COLDER THAN NORMAL. THIS WAS THE FIRST
TIME SINCE THE SUMMER OF 2004 THAT THREE OR MORE CONSECUTIVE MONTHS
WERE AT LEAST 2 DEGREES BELOW NORMAL. SNOWFALL WAS WELL BELOW NORMAL
ACROSS THE AREA.

THE FIRST WEEK OF THE MONTH WAS MOSTLY DRY AND COLDER THAN NORMAL.
THEN AROUND THE 7TH... A FRONTAL SYSTEM STALLED NEAR SOUTHWEST LOWER
MICHIGAN. WAVES OF LOW PRESSURE THEN MOVED ALONG THE FRONT FOR THE
NEXT TWO WEEKS... WITH EACH BRINGING ANOTHER PERIOD OF RAIN.
MEASURABLE RAIN FELL EVERY DAY FROM THE 7TH THROUGH THE 19TH. THE
HEAVIEST RAINFALL FELL DURING TWO TIME PERIODS. THE FIRST WAS FROM
THE 10TH THROUGH THE 12TH. THE SECOND WAS FROM THE 17TH THROUGH THE
19TH. THREE TO FIVE INCHES OF RAIN FELL DURING THESE TIME PERIODS.
THE FIRST PERIOD OF HEAVY RAINFALL SATURATED THE GROUND AND BROUGHT
AREA RIVERS TO NEAR BANK FULL. THE SECOND PERIOD OF HEAVY RAIN
CAUSED MANY RIVERS TO GO ABOVE FLOOD STAGE. THE GRAND RIVER IN GRAND
RAPIDS REACHED A RECORD HIGH STAGE OF 21.86 FEET LATE IN THE DAY ON
THE 21ST. EXTENSIVE FLOODING OCCURRED IN MANY COMMUNITIES ALONG THE
GRAND RIVER... SUCH AS LOWELL...COMSTOCK PARK AND GRANDVILLE.
STREETS... BUSINESSES AND HOMES WERE FLOODED AND EXTENSIVE DAMAGE
OCCURRED. MANY ROADS WERE CLOSED FOR NEARLY A WEEK. THE FLOOD WALLS
IN DOWNTOWN GRAND RAPIDS PROTECTED THE DOWN TOWN AREA. THERE WAS NO
SEVERE WEATHER REPORTED WITH ANY OF THESE WAVES.

THERE WAS ADDITIONAL RAIN FROM THE 22ND THROUGH THE 25TH. THE MONTH
ENDED WITH AN AREA OF THUNDERSTORMS BRINGING FROM A QUARTER OF AN
INCH TO AN INCH OF RAIN ACROSS THE AREA. THESE STORMS PRODUCED
NUMEROUS REPORTS OF PEA TO MARBLE SIZE HAIL.

WHILE MOST OF THE DAYS FROM THE FIRST THROUGH THE 26TH WERE COLDER
THAN NORMAL... THE LAST THREE DAYS OF THE MONTH FINALLY BROUGHT
TEMPERATURES ABOVE NORMAL.

$$

WDM 63