RSS FeedsIssued by NWS Detroit/Pontiac, MI
000
CXUS53 KDTX 011957
CLMDTW
CLIMATE REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
400 PM EDT TUE SEP 1 2009
...................................
...THE DETROIT MI CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2009...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1870 TO 2009
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
................................................
TEMPERATURE (F)
RECORD
HIGH 104 08/06/1918
LOW 38 08/29/1982
HIGHEST 94 08/09 MM MM
LOWEST 49 08/31 MM MM
AVG. MAXIMUM 80.1 81.4 -1.3
AVG. MINIMUM 62.2 62.2 0.0
MEAN 71.2 71.8 -0.6
DAYS MAX >= 90 2 2.9 -0.9
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 0 0.0 0.0
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 8.33 1926
MINIMUM 0.16 1894
TOTALS 2.76 3.10 -0.34
DAILY AVG. 0.09 0.10 -0.01
DAYS >= .01 9 MM MM
DAYS >= .10 5 MM MM
DAYS >= .50 1 MM MM
DAYS >= 1.00 1 MM MM
GREATEST
24 HR. TOTAL 1.36 08/08 TO 08/08
08/07 TO 08/08
08/08 TO 08/08
STORM TOTAL MM
(MM/DD(HH)) MM
SNOWFALL (INCHES)
RECORDS
TOTAL 0.0 0
0
0
TOTALS 0.0 0.0 0.0
LIQUID EQUIV 0.00 0.00 0.00
SINCE 7/1 0.0 0.0 0.0
LIQUID 7/1 0.00
DAYS >= TRACE 0 0.0 0.0
DAYS >= 1.0 0 0.0 0.0
GREATEST
SNOW DEPTH 0 MM
24 HR TOTAL 0.0 08/31 TO 08/31
STORM TOTAL MM
(MM/DD(HH)) MM
DEGREE_DAYS
HEATING TOTAL 14 12 2
SINCE 7/1 19 12 7
COOLING TOTAL 214 208 6
SINCE 1/1 505 655 -150
FREEZE DATES
RECORD
EARLIEST MM
LATEST MM
EARLIEST MM
LATEST MM
.................................................
WIND (MPH)
AVERAGE WIND SPEED 7.4
HIGHEST WIND SPEED/DIRECTION 31/200 DATE 08/20
HIGHEST GUST SPEED/DIRECTION 38/190 DATE 08/20
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 3
NUMBER OF DAYS PC 19
NUMBER OF DAYS CLOUDY 9
AVERAGE RH (PERCENT) 70
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 2 MIXED PRECIP 0
HEAVY RAIN 3 RAIN 5
LIGHT RAIN 15 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 1
HAZE 13
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
$$
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CLIMATOLOGICAL STATISTICS FOR THE NWS WHITE LAKE - AUGUST 2009
...TEMPERATURE DATA... ...PRECIPITATION DATA...
AVERAGE MAXIMUM.... 77.5 MONTHLY TOTAL ........... 4.09
AVERAGE MINIMUM.... 56.8 GREATEST IN 24HRS........ 2.11
MONTHLY AVERAGE.... 67.2 ON THE 8TH
2009 TOTAL...............26.26
...HEATING DEGREE DAYS... ...SNOWFALL DATA...
MONTHLY TOTAL......... 52 MONTHLY TOTAL.......... 0.0
2008-09 SEASON TOTAL.. 122 2009-10 SEASON TOTAL... 0.0
...COOLING DEGREE DAYS...
MONTHLY TOTAL..........122
2009 TOTAL.............272
==================================================================
CLIMATOLOGICAL SUMMARY FOR DETROIT - AUGUST 2009
...A NEAR NORMAL SUMMER MONTH...THAT IS UNTIL THE LAST FEW DAYS...
...COOL AND WET AUGUST ENDING A PROPER SEND OFF FOR THE SUMMER...
***DOMINANT TEMPERATURE/RAIN TREND...NORMAL/ABOVE NORMAL***
AFTER WEEKS OF UNSEASONABLY COOL WEATHER THIS SUMMER...TEMPERATURES IN
AUGUST MODERATED UP CLOSER TO NORMAL (BUT STILL FELL BELOW IN THE END).
WHILE THE FIRST WEEK STARTED OUT BELOW NORMAL LIKE JULY...TEMPERATURES
MODERATED TO NORMAL AND ABOVE IN THE HEART OF AUGUST. ALSO...THE
ALTERNATING VERY WET AND DRY PERIODS THAT STARTED IN JULY CONTINUED
INTO THE FIRST HALF OF AUGUST...THEN PRETTY MUCH FADED AS THE FREQUENCY
OF RAIN PICKED UP THE SECOND HALF.
ONE OF THE MOST EVENTFUL WEATHER ITEMS OF THE MONTH PROCEEDED A STRONG
WARM FRONT THAT PUSHED NORTH THROUGH THE REGION EARLY-MIDDAY ON THE
8TH. STRONG THUNDERSTORMS WITH INTENSE RAIN ACCOMPANIED THE SYSTEM.
MANY LOCATIONS RECEIVED AN INCH OR TWO OF RAIN WITH SOME HIGHER AMOUNTS
AROUND THREE INCHES. THE HEAVIEST RAINS FELL ACROSS THE NORTHEAST
SUBURBS WITH RAINFALL AMOUNTS INCLUDING...3.75" AT CAPAC... 3.45" AT
RICHMOND...2.45" AT PONTIAC...2.23" AT ALGONAC AND 2.11 AT NWS WHITE
LAKE. OFFICIALLY AT DETROIT METRO JUST 1.39" FELL WHICH WAS ON THE
"LIGHT" SIDE WHEN COMPARED TO OTHERS.
FOLLOWING THE HEAVY RAINS OF THE 8TH...THE MOST NOTABLE SEVERE WEATHER
EVENT OF AUGUST CAME ON THE 9TH. A SQUALL-LINE BLEW THROUGH THE REGION
AFTER ONE OF THE FEW HOT HUMID DAYS IN AUGUST (AND THE SUMMER). HIGH WINDS
OF 50 TO 60 MPH SURGED OUT AHEAD OF A LINE OF STORMS AS IT CROSSED THE
WEST AND NORTHERN SUBURBS. WINDS OF A LEAST 50 - 60 MPH HIT LIVONIA...
FOWLERVILLE...NEW HAVEN AND FROM MT CLEMENS INTO LAKE ST CLAIR. REPORTS
OF TREES AND BRANCHES ALONG WITH SOME POWER OUTAGES WERE RECEIVED
DURING THE EVENT.
THE LAST THIRD OF THE MONTH REVERTED BACK TO THE FAMILIAR BELOW NORMAL
TEMPERATURE REGIME COOL...RAINY WEATHER DOMINATED THE LAST FEW WEEKENDS
IN AUGUST WITH A SOME HIGH TEMPERATURES MAKING A PITIFUL SHOWING IN THE
60S. FOR EXAMPLE...ON THE 22ND AND 28TH SAW THE HIGH ONLY MAKE 67...
WHILE ON THE 30TH WITH 69. THE FOLLOWING "LONG COOL WEEKEND"
TEMPERATURES STRUGGLED TO MAKE 67 ON THE 28TH AND 69 ON THE 30TH. MUCH
OF THE TIME IT WAS ACCOMPANIED BY DREARY FALL-LIKE WEATHER WITH CLOUDS
AND SHOWERS.
LOOK FOR THE COOL SUMMER 2009 WRITE-UP ALONG WITH THE AUTUMN OUTLOOK ON
THE WEB THIS FIRST WEEK OF SEPTEMBER.
DEEDLER
