608
CXUS53 KDTX 032155
CLMFNT
CLIMATE REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
450 PM EST TUE NOV 3 2009
...............................
..THE FLINT MI CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2009
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1921 TO 2009
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
............................................
TEMPERATURE (F)
RECORD
HIGH 89 10/01/2002
10/06/1963
10/03/1953
LOW 19 10/21/1974
10/30/1966
HIGHEST 69 10/30 MM MM
LOWEST 23 10/18 MM MM
AVG. MAXIMUM 55.6 59.7 -4.1
AVG. MINIMUM 39.1 38.6 0.5
MEAN 47.4 49.2 -1.8
DAYS MAX >= 90 0 0.0 0.0
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 8 5.8 2.2
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 6.59 2001
MINIMUM 0.33 2005
TOTALS 3.35 2.34 1.01
DAILY AVG. 0.11 0.08 0.03
DAYS >= .01 18 MM MM
DAYS >= .10 9 MM MM
DAYS >= .50 3 MM MM
DAYS >= 1.00 0 MM MM
GREATEST
24 HR. TOTAL 0.90 10/30 TO 10/30
SNOWFALL (INCHES)
RECORDS
TOTAL 4.4 1989
TOTALS 0.0 0.3 -0.3
LIQUID EQUIV 0.00 0.00 0.00
SINCE 7/1 0.0 0.3 -0.3
LIQUID 7/1 0.00
DAYS >= TRACE 0 0.3 -0.3
DAYS >= 1.0 0 0.1 -0.1
GREATEST
SNOW DEPTH 0
DEGREE_DAYS
HEATING TOTAL 542 478 64
SINCE 7/1 744 687 57
COOLING TOTAL 0 4 -4
SINCE 1/1 341 554 -213
FREEZE DATES
RECORD
EARLIEST 09/17/1959
.............................................
WIND (MPH)
AVERAGE WIND SPEED 8.2
HIGHEST WIND SPEED/DIRECTION 36/240 DATE 10/06
HIGHEST GUST SPEED/DIRECTION 51/270 DATE 10/07
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 4
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 15
AVERAGE RH (PERCENT) 75
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 4 RAIN 6
LIGHT RAIN 18 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 19 FOG W/VIS <= 1/4 MILE 1
HAZE 4
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
CLIMATE REPORT
NATIONAL WEATHER SERVICE DETROIT/PONTIAC MI
450 PM EST TUE NOV 3 2009
...............................
...THE TRI CITIES MI CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2009...
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1898 TO 2009
WEATHER OBSERVED NORMAL DEPART
VALUE DATE(S) VALUE FROM
NORMAL
............................................
TEMPERATURE (F)
RECORD
HIGH 91 10/07/2007
LOW 19 10/31/1925
10/30/1925
HIGHEST 69 10/30 MM MM
LOWEST 26 10/18 MM MM
10/11
AVG. MAXIMUM 55.4 58.8 -3.4
AVG. MINIMUM 40.0 40.1 -0.1
MEAN 47.7 49.5 -1.8
DAYS MAX >= 90 0 0.0 0.0
DAYS MAX <= 32 0 0.0 0.0
DAYS MIN <= 32 6 5.2 0.8
DAYS MIN <= 0 0 0.0 0.0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.78 1954
MINIMUM 0.18 1952
TOTALS 4.19 2.49 1.70
DAILY AVG. 0.14 0.08 0.06
DAYS >= .01 13 MM MM
DAYS >= .10 6 MM MM
DAYS >= .50 2 MM MM
DAYS >= 1.00 1 MM MM
GREATEST
24 HR. TOTAL 1.91 10/30 TO 10/30
SNOWFALL (INCHES)
RECORDS
TOTAL 5.0 1967
TOTALS 0.0 0.2 -0.2
LIQUID EQUIV 0.00 0.00 0.00
SINCE 7/1 0.0 0.2 -0.2
LIQUID 7/1 0.00
DAYS >= TRACE 0 0.1 -0.1
DAYS >= 1.0 0 0.1 -0.1
GREATEST
SNOW DEPTH 0
DEGREE_DAYS
HEATING TOTAL 526 487 39
SINCE 7/1 701 692 9
COOLING TOTAL 0 0 0
SINCE 1/1 346 544 -198
FREEZE DATES
RECORD
EARLIEST 09/14/1899
.............................................
WIND (MPH)
AVERAGE WIND SPEED 9.1
HIGHEST WIND SPEED/DIRECTION 36/250 DATE 10/30
HIGHEST GUST SPEED/DIRECTION 46/260 DATE 10/31
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
NUMBER OF DAYS FAIR 5
NUMBER OF DAYS PC 12
NUMBER OF DAYS CLOUDY 14
AVERAGE RH (PERCENT) 75
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 2 RAIN 4
LIGHT RAIN 18 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 0 SLEET 0
FOG 17 FOG W/VIS <= 1/4 MILE 0
HAZE 3
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
======================================================================
CLIMATOLOGICAL SUMMARY FOR FLINT/SAGINAW 2009
..ONE OF THE COLDER AND WETTER OCTOBERS ON RECORD.
..UNSEASONABLY COLD WEATHER FIRST HALF OF MONTH RANKS IN TOP TEN
...WARMER WEATHER LATTER THIRD OF THE MONTH OFFSETS THE COLD EARLIER...
***DOMINANT TEMPERATURE/RAIN TREND...BELOW NORMAL/ABOVE NORMAL***
MOTHER NATURE REVERSED THE DRY AND WARM TREND SEEN EARLY THIS FALL...
BACK TO THE COOL AND WET SCENARIO SEEN MOST OF THE SUMMER. BOTH CITIES
(FLINT/SAGINAW) PLACED IN THE TOP 20 COLDEST OCTOBERS (AND THIS IN SPITE
OF THE WARM-UP LATE MONTH). FLINT...WITH AN AVERAGE TEMPERATURE OF
47.4...CAME IN AT THE 13TH COLDEST OCTOBER ON RECORD...WHILE SAGINAW
WITH AN AVERAGE TEMPERATURE OF 47.7 JUST LANDED 20TH SPOT.
THE FIRST WEEK OF OCTOBER WAS COOL AND WET WITH AROUND AN INCH OF RAIN
MOST LOCATIONS. THE WORST OF THE COLD AIR WAS WAS YET TO COME AS WE
ENTERED MID-MONTH. THE COLDEST (LARGEST BELOW NORMAL DEPARTURES)
OCCURRED BETWEEN THE 10TH AND 18TH WHEN READINGS AVERAGED A HUGE 10
DEGREES BELOW NORMAL. AS THE LARGE AS THE BELOW NORMAL DEPARTURES
WERE...THE PERSISTENCE OF THE COLD WAS EVEN MORE IMPRESSIVE (ESPECIALLY
COMING THE FIRST PART OF THE MONTH). BY THE 15TH...OCTOBER AVERAGED
45.5 TO 46 DEGREES (OR ABOUT 6.5 DEGREES BELOW NORMAL). WITH AN AVERAGE
TEMPERATURE OF 45.4 DEGREES FOR THE 15 DAY PERIOD AT FLINT...THIS WAS THE
COLDEST STRETCH EVER FELT FOR THE FIRST HALF OF OCTOBER. THE PREVIOUS
COLDEST EARLY OCTOBER STRETCH WAS BACK IN 1980 WITH AN AVERAGE OF 45.6.
LOOKING FURTHER NORTH AT SAGINAW WITH AN AVERAGE TEMPERATURE OF 46.2...
THIS YEAR TIED FOURTH PLACE /1977/. THE COLDEST FIRST HALF OF OCTOBER
IN SAGINAW OCCURRED WAY BACK IN 1917 WITH 44.4. KEEP IN MIND...THE
TYPICAL AVERAGE TEMPERATURE FOR THIS PERIOD /1ST-15TH/ IS AROUND 54
DEGREES (WITH HIGHS IN THE MID 60S).
THE LATTER THIRD OF THE MONTH MODERATED WITH SOME BRIEF PERIODS OF
INDIANA SUMMER-LIKE WEATHER...PEAKING IN TWO PERIODS. THE TEMPERATURE
CLIMBED TO 66 DEGREES ON THE 21ST AT BOTH CITIES...THEN ON THE 30TH...
AGAIN BOTH CITIES FLIRTED WITH 70 /69 DEGREES/...THE WARMEST OF THE
MONTH. I SAY INDIAN SUMMER -LIKE- SINCE A TRUE INDIAN SUMMER HAS TO
HAVE SEVERAL DAYS OF MAINLY SUNNY WEATHER AND GENERALLY CLEAR NIGHTS
WITH HIGH TEMPERATURES AVERAGING WELL ABOVE NORMAL (ALL OCCURRING AFTER
A KILLING FROST/FREEZE). WHILE THIS OCTOBER PERIOD MODERATED LATE IN
THE MONTH...THE WARM WEATHER WAS ACCOMPANIED BY RAIN...SO THERE WAS NO
STRETCH OF WARM WEATHER NOR MUCH SUNSHINE.
SPEAKING OF RAIN...THE ENTIRE MONTH WAS ON THE WET SIDE WITH ALL AREAS
RECEIVING ABOVE NORMAL RAINFALL (WITH THE WETTEST PERIOD NEAR THE CLOSE
OF THE MONTH). FLINT'S MONTHLY TOTAL OF 3.35" WAS AN EVEN INCH ABOVE
NORMAL WITH NEAR AN INCH /0.90" /OF THAT FALLING ON THE 30TH. IN AND
AROUND THE SAGINAW VALLEY...THE 4.19" FOR THE MONTH MADE IT THE 13TH
WETTEST ON RECORD FOR SAGINAW. SAGINAW GOT DOUSED WITH RAIN ON THE
30TH WITH NEAR TWO INCHES /1.91"/ FALLING...A NEW RECORD RAINFALL FOR
THE DATE.
ON THE STORM FRONT...A FEW DEEP LOWS (MORE REMINISCENT OF NOVEMBER)
BROUGHT PRE-FRONTAL THUNDERSTORMS /3RD/ AND SUBSEQUENT HIGH WINDS
/7TH AND 31ST/ IN THEIR WAKE. STRONG WIND GUSTS IN EXCESS OF 40 MPH
IMPACTED THE AREA DURING THE EARLY MORNING HOURS OF THE 7TH. HIGHEST
WIND GUSTS RANGED FROM 51 MPH AT FLINT...49 MPH /PONTIAC/...48 MPH
/YPSILANTI/...46 MPH AT DETROIT METRO TO 45 MPH MT CLEMENS. THEN ON
HALLOWEEN...A STRONG POLAR FRONT BROUGHT MUCH COLDER AIR INTO THE
REGION AFTER A BALMY 30TH DURING THE EARLY MORNING HOURS OF 31ST.
HIGHEST WINDS GUSTS WERE CLOCKED AT 45 MPH AT DETROIT METRO ARPT...
PONTIAC AND SAGINAW. AS WOULD BE EXPECTED...BOTH SYSTEMS BROUGHT SOME
SCATTERED POWER OUTAGES AND TREE DAMAGE.
LASTLY...A WIDESPREAD KILLING FREEZE OCCURRED FOR MOST OF SOUTHEAST
MICHIGAN THE MORNING OF THE 11TH. LOCATIONS NORTH OF THE M-59 SAW
TEMPERATURES DROP SOLIDLY INTO THE MID AND UPPER 20S...WHILE LOCATIONS
FROM METRO DETROIT SOUTH RANGED FROM THE UPPER 20S TO LOW 30S. ON
AVERAGE...THIS WAS ABOUT A WEEK EARLIER THAN NORMAL...ESPECIALLY
OVER EXTREME SOUTHEAST LOWER MICHIGAN.
DEEDLER
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