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

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CXUS53 KGRR 080456
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
105 PM EDT SUN APR 3 2016

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

...THE GRAND RAPIDS MI (ASOS) CLIMATE SUMMARY FOR THE MONTH OF MARCH 2016...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1892 TO 2016

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              87   03/21/2012
 LOW              -13   03/08/1943
HIGHEST            71   03/08        67       4       65  03/16
LOWEST              6   03/04         6       0        0  03/05
AVG. MAXIMUM     49.7              44.4     5.3     42.1
AVG. MINIMUM     31.4              26.9     4.5     22.6
MEAN             40.6              35.6     5.0     32.4
DAYS MAX >= 90      0               0.0     0.0        0
DAYS MAX <= 32      3               4.0    -1.0        6
DAYS MIN <= 32     16              21.7    -5.7       27
DAYS MIN <= 0       0               0.1    -0.1        1

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         5.77   1948
 MINIMUM         0.08   1910
TOTALS           4.94              2.37    2.57     1.05
DAILY AVG.       0.16              0.08    0.08     0.03
DAYS >= .01        16              11.8     4.2        6
DAYS >= .10        12               6.2     5.8        4
DAYS >= .50         4               1.3     2.7        0
DAYS >= 1.00        0               0.3    -0.3        0
GREATEST
 24 HR. TOTAL    1.16   03/30 TO 03/31

SNOWFALL (INCHES)
RECORDS
 TOTAL           36.0   1965
 24 HR TOTAL     13.6   03/02/2002 TO 03/02/2002
 SNOW DEPTH        20   03/02/2014
TOTALS           10.1               8.3     1.8      3.2
SINCE 7/1        51.7              73.1   -21.4     78.0
SNOWDEPTH AVG.      1                MM      MM        2
DAYS >= TRACE       7               6.4     0.6        9
DAYS >= 1.0         2               2.2    -0.2        1
GREATEST
 SNOW DEPTH         7   03/02                          8  03/07
                                                          03/06
                                                          03/05
 24 HR TOTAL      7.4   03/01 TO 03/01

DEGREE_DAYS
HEATING TOTAL     749               910    -161     1004
 SINCE 7/1       4826              5687    -861     6306
COOLING TOTAL       0                 1      -1        0
 SINCE 1/1          0                 1      -1        0

FREEZE DATES
RECORD
 EARLIEST     09/03/1946
 LATEST       06/04/1945
EARLIEST      03/01             10/13
LATEST                          05/02
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              9.8
RESULTANT WIND SPEED/DIRECTION   1/199
HIGHEST WIND SPEED/DIRECTION    44/240    DATE  03/16
HIGHEST GUST SPEED/DIRECTION    57/240    DATE  03/16

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   42
AVERAGE SKY COVER           0.70
NUMBER OF DAYS FAIR            2
NUMBER OF DAYS PC             15
NUMBER OF DAYS CLOUDY         14

AVERAGE RH (PERCENT)     72

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                2     RAIN                       8
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          2     HAIL                       0
HEAVY SNOW                1     SNOW                       2
LIGHT SNOW                7     SLEET                      1
FOG                      20     FOG W/VIS <= 1/4 MILE      3
HAZE                      8

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

&&

MARCH 2016 WAS SEVERAL DEGREES WARMER THAN NORMAL THROUGHOUT ALL OF SOUTHWEST
LOWER MICHIGAN. IN ADDITION TO TEMPERATURES EXCEEDING NORMAL
VALUES...PRECIPITATION WAS INCREASINGLY ABOVE NORMAL FROM SOUTH TO NORTH.
DESPITE MILD TEMPERATURES...MOST LOCATIONS RECEIVED THEIR FAIR SHARE OF WINTRY
WEATHER IN WHAT TURNED OUT TO BE AN ACTIVE MARCH PATTERN.

THE MONTH STARTED OUT QUITE WINTER-LIKE. ON MARCH 1...A SWATH OF HEAVY SNOW
STRETCHED FROM SOUTH HAVEN...NORTHEAST THROUGH THE SAGINAW BAY REGION. ALL
THREE CLIMATE SITE IN SOUTHWEST LOWER MICHIGAN SET DAILY SNOWFALL RECORDS. WELL
BELOW NORMAL TEMPERATURES CONTINUED THROUGH THE FIRST FOUR DAYS OF THE MONTH.
COLDER THAN NORMAL CONDITIONS QUICKLY TURNED WARMER THAN NORMAL BY THE SECOND
WEEK IN MARCH. WELL ABOVE NORMAL WARMTH REMAINED IN PLACE FOR MORE THAN A WEEK.

COOLER AIR WAS POISED TO RETURN TO LOWER MICHIGAN AS A POTENT STORM SYSTEM
DEVELOPED OVER THE MIDWEST MARCH 15 AND 16. STRONG THUNDERSTORMS RESULTED IN
CLOSER-TO-NORMAL TEMPERATURES FOR SEVERAL DAYS FOLLOWING THE EVENT. THE NEAR-
NORMAL CONDITIONS SWAYED SLIGHTLY BELOW NORMAL ON MARCH 24...WHICH ULTIMATELY
PROVED TO BE PROBLEMATIC. SOME LOCATIONS WERE NEAR OR BELOW FREEZING...SETTING
THE STAGE FOR A SIGNIFICANT ICE...SLEET AND SNOW EVENT THROUGH CENTRAL LOWER
MICHIGAN ON MARCH 23 AND 24. MANY RESIDENTS LOST POWER DUE TO DOWNED TREE LIMBS
AND POWER LINES.

ANOTHER STRONG SPRING STORM SYSTEM SENT MILD AIR SURGING NORTHWARD INTO LOWER
MICHIGAN AT THE TAIL END OF THE MONTH. TEMPERATURES REACHED INTO THE 50S AND
60S ON MARCH 30 AND 31 BEFORE A CLASH OF AIR MASSES OCCURRED ON THE LAST DAY OF
THE MONTH. AN ELONGATED LINE OF THUNDERSTORMS STRETCH FROM NORTH TO SOUTH OVER
LAKE MICHIGAN...EVENTUALLY MARCHING EASTWARD THROUGH THE STATE. GUSTY WINDS...
HEAVY RAIN AND FREQUEST LIGHTNING QUICKLY RIPPED THROUGH SOUTHWEST LOWER
MICHIGAN DURING THE AFTERNOON HOURS. THIS ACTIVELY CLOSED AN ALREADY BUSY MONTH.

$$

63
JAM



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