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

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000
CXUS53 KGRR 011715
CLMGRR

CLIMATE REPORT
NATIONAL WEATHER SERVICE GRAND RAPIDS, MI
1258 PM EDT WED OCT 1 2014

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

...THE GRAND RAPIDS MI CLIMATE SUMMARY FOR THE MONTH OF SEPTEMBER 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   09/02/1913
                        09/16/1899
 LOW               27   09/28/1991
HIGHEST            84   09/05        87      -3       94  09/10
                        09/04
LOWEST             40   09/17        35       5       38  09/17
                                                          09/23
AVG. MAXIMUM     72.6              73.0    -0.4     74.6
AVG. MINIMUM     51.5              52.7    -1.2     52.9
MEAN             62.1              62.8    -0.7     63.7
DAYS MAX >= 90      0               0.3    -0.3        1
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.1    -0.1        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM        11.85   1986
 MINIMUM         0.00   1979
TOTALS           3.10              4.28   -1.18     1.25
DAILY AVG.       0.10              0.14   -0.04     0.04
DAYS >= .01        10              10.7    -0.7        6
DAYS >= .10         7               6.9     0.1        4
DAYS >= .50         2               2.7    -0.7        1
DAYS >= 1.00        0               1.0    -1.0        0
GREATEST
 24 HR. TOTAL    0.86   09/10 TO 09/10           09/09 TO 09/09

SNOWFALL (INCHES)
RECORDS
 TOTAL              T   2003
 24 HR TOTAL        T   MM
 SNOW DEPTH         T   MM
TOTALS            0.0               0.0     0.0      0.0
SINCE 7/1         0.0               0.0     0.0      0.0
SNOWDEPTH AVG.      0                MM      MM        0
DAYS >= TRACE       0               0.0     0.0        0
DAYS >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   09/30 TO 09/30           09/29 TO 09/29

DEGREE_DAYS
HEATING TOTAL     131               132      -1      112
 SINCE 7/1        150               152      -2      138
COOLING TOTAL      51                67     -16       83
 SINCE 1/1        611               692     -81      753

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

WIND (MPH)
AVERAGE WIND SPEED              7.2
RESULTANT WIND SPEED/DIRECTION   2/238
HIGHEST WIND SPEED/DIRECTION    38/250    DATE  09/05
HIGHEST GUST SPEED/DIRECTION    46/260    DATE  09/05

SKY COVER
POSSIBLE SUNSHINE (PERCENT)   68
AVERAGE SKY COVER           0.50

AVERAGE RH (PERCENT)     77

WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM              4     MIXED PRECIP               0
HEAVY RAIN                6     RAIN                       7
LIGHT RAIN               11     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                      20     FOG W/VIS <= 1/4 MILE      3
HAZE                      1

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

&&

SEPTEMBER 2014 WAS OVERALL COOLER AND DRIER THAN NORMAL IN SOUTHWEST
LOWER MICHIGAN. TEMPERATURES ENDED UP ABOUT A DEGREE BELOW NORMAL
AND PRECIPITATION ABOUT AN INCH BELOW NORMAL IN MANY LOCATIONS.

THE MONTH STARTED OUT ON THE WARM AND HUMID SIDE... WITH OCCASIONAL
ROUNDS OF THUNDERSTORMS DURING THE FIRST WEEK. SEPTEMBER 5TH WAS THE
HOTTEST DAY FOR MOST AREAS AS TEMPERATURES HIT OR EXCEEDED THE 90
DEGREE MARK IN KALAMAZOO... BATTLE CREEK AND JACKSON. LANSING TOPPED
OUT AT 89 AND GRAND RAPIDS STAYED AT 84... WHICH SECURED THE
REMARKABLE STATISTIC OF NO 90 DEGREE DAYS IN 2014 AT BOTH CITIES.

A SIGNIFICANT COOL DOWN OCCURRED IN THE MIDDLE OF THE MONTH. HIGHS
FAILED TO REACH 60 DEGREES THROUGHOUT THE AREA ON SEPTEMBER 12TH.
MUSKEGON ALSO SET A RECORD FOR COLDEST HIGH TEMPERATURE ON THE 12TH
WITH A HIGH OF 57. AS SKIES CLEARED TOWARD THE LATER PORTION OF THE
COLD STRETCH... A FEW NIGHTS OF PATCHY TO WIDESPREAD FROST OCCURRED
IN NORTHERN AND CENTRAL LOWER MICHIGAN.

A WEEKLONG STRETCH OF WARM AND SUNNY WEATHER ROUNDED OUT THE LATTER
PART OF THE MONTH... WITH HIGHS CONSISTENTLY IN THE 70S AND LOWS
AROUND 50. VERY LITTLE PRECIPITATION FELL DURING THIS PERIOD...
WHICH KEPT THE MONTHLY PRECIPITATION AT ABOUT 75 PERCENT OF NORMAL
FOR MOST LOCATIONS. A COLD FRONT ON THE 29TH BROUGHT LIGHT RAIN
FOLLOWED BY MUCH COOLER AIR FOR THE FINAL DAY OF SEPTEMBER.

THERE WAS ONE DAY OF WIDESPREAD SEVERE WEATHER IN SOUTHWEST LOWER
MICHIGAN. A LINE OF STORMS ON THE EVENING OF SEPTEMBER 5TH PRODUCED
WIND DAMAGE AND NUMEROUS POWER OUTAGES SPANNING FROM WEST OF
KALAMAZOO TO EAST OF JACKSON. MANY TREES FELL IN KALAMAZOO AND IN
THE BATTLE CREEK AREA... AND THE AIRPORTS IN KALAMAZOO AND BATTLE
CREEK MEASURED RESPECTIVE WIND GUSTS OF 56 AND 60 MPH.

$$

CAS 63






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