963
CXUS53 KMQT 031734
CLMMQT
CLIMATE REPORT...PRELIMINARY
NATIONAL WEATHER SERVICE MARQUETTE MI
1235 PM EST TUE NOV 3 2009
...............................
..THE MARQUETTE MI CLIMATE SUMMARY FOR THE MONTH OF OCTOBER 2009
CLIMATE NORMAL PERIOD 1971 TO 2000
CLIMATE RECORD PERIOD 1961 TO 2009
WEATHER OBSERVED NORMAL DEPART LAST YEAR'S
VALUE DATE(S) VALUE FROM VALUE DATE(S)
NORMAL
............................................................
TEMPERATURE (F)
RECORD
HIGH 87 10/02/1992
LOW 9 10/23/1969
HIGHEST 63 10/19 51 12 77 10/13
LOWEST 20 10/14 34 -14 21 10/22
AVG. MAXIMUM 45.1 52.0 -6.9 52.5
AVG. MINIMUM 33.0 34.4 -1.4 36.3
MEAN 39.0 43.2 -4.2 44.4
DAYS MAX >= 90 0 0.0 0.0 0
DAYS MAX <= 32 0 0.6 -0.6 0
DAYS MIN <= 32 15 15.0 0.0 11
DAYS MIN <= 0 0 0.0 0.0 0
PRECIPITATION (INCHES)
RECORD
MAXIMUM 7.59 1979
MINIMUM 0.94 1975
TOTALS 6.95 3.66 3.29 2.62
DAILY AVG. 0.22 0.12 0.10 0.08
DAYS >= .01 18 14.1 3.9 14
DAYS >= .10 10 8.2 1.8 8
DAYS >= .50 4 2.1 1.9 1
DAYS >= 1.00 4 0.8 3.2 0
GREATEST
24 HR. TOTAL 1.61 10/06 TO 10/07
SNOWFALL (INCHES)
RECORDS
TOTAL 18.6 1979
TOTALS 2.0 5.9 -3.9 2.2
SINCE 7/1 2.0 6.0 -4.0 2.2
SNOWDEPTH AVG. 0 0 0 0
DAYS >= 1.0 1 1.8 -0.8 1
GREATEST
SNOW DEPTH 1 10/13 2 10/28
24 HR TOTAL 1.5 10/12 TO 10/13
DEGREE_DAYS
HEATING TOTAL 798 671 127 631
SINCE 7/1 1289 1208 81 1032
COOLING TOTAL 0 0 0 0
SINCE 1/1 124 229 -105 152
.............................................................
WIND (MPH)
AVERAGE WIND SPEED MM
HIGHEST WIND SPEED/DIRECTION MM DATE MM
HIGHEST GUST SPEED/DIRECTION 40/270 DATE 10/31
SKY COVER
POSSIBLE SUNSHINE (PERCENT) MM
AVERAGE SKY COVER MM
NUMBER OF DAYS FAIR MM
NUMBER OF DAYS PC MM
NUMBER OF DAYS CLOUDY MM
AVERAGE RH (PERCENT) MM
WEATHER CONDITIONS. NUMBER OF DAYS WITH
THUNDERSTORM 0 MIXED PRECIP 0
HEAVY RAIN 0 RAIN 4
LIGHT RAIN 21 FREEZING RAIN 0
LT FREEZING RAIN 0 HAIL 0
HEAVY SNOW 0 SNOW 0
LIGHT SNOW 12 SLEET 2
FOG 5 FOG W/VIS <= 1/4 MILE 4
HAZE 0
- INDICATES NEGATIVE NUMBERS.
R INDICATES RECORD WAS SET OR TIED.
MM INDICATES DATA IS MISSING.
T INDICATES TRACE AMOUNT.
..OCTOBER 2009 MONTHLY CLIMATE SUMMARY FOR UPPER MICHIGAN
(THIS DISCUSSION DOES NOT INCLUDE CHIPPEWA AND MACKINAC COUNTIES)
..VERY WET
..SECOND WETTEST OCTOBER AT THE MARQUETTE NWS
..VERY CHILLY
..SIXTH COOLEST OCTOBER AT THE MARQUETTE NWS
OCTOBER CLIMATE STATISTICS FOR THE MARQUETTE NWS IN NEGAUNEE TOWNSHIP
NORMAL DEPARTURE
AVERAGE TEMPERATURE 39.0 43.2 MINUS 4.2
AVERAGE HIGH TEMPERATURE 45.1 52.0 MINUS 6.9
AVERAGE LOW TEMPERATURE 33.0 34.4 MINUS 1.4
HEATING DEGREE DAYS 798 671 PLUS 127
COOLING DEGREE DAYS 0 0 0
TOTAL PRECIPITATION 6.95 3.66 PLUS 3.29
TOTAL SNOWFALL 2.0 5.9 MINUS 3.9
HIGHEST TEMPERATURE: 63 ON 10/19
LOWEST TEMPERATURE: 20 ON 10/14
GREATEST CALENDAR DAY PRECIPITATION: 1.50 ON 10/6
GREATEST 24 HOUR PRECIPITATION: 1.61 ON 10/6-10/7
GREATEST CALENDAR DAY SNOWFALL: 1.0 ON 10/13
GREATEST 24 HOUR SNOWFALL: 1.5 ON 10/12-10/13
PEAK WIND SPEED: 40 MPH FROM THE WEST ON 10/31
DAILY RECORD LOW MINIMUM TEMPERATURE ON 10/1...26 (OLD RECORD
30...1966/2003
DAILY RECORD PRECIPITATION ON 10/6...1.50 (1.11...1995)
DAILY RECORD LOW MINIMUM TEMPERATURE ON 10/14...20 (21...2002)
DAILY RECORD LOW MAXIMUM TEMPERATURE TIED ON 10/15...37 (37...1991)
DAILY RECORD PRECIPITATION ON 10/21...1.22 (0.88...1972)
SIXTH LOWEST OCTOBER MEAN TEMPERATURE...39.0 (RECORD 37.9...2002)
SECOND HIGHEST OCTOBER PRECIPITATION...6.95 (RECORD 7.59...1979)
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GREAT LAKES WATER LEVELS (FEET/METERS ABOVE MEAN SEA LEVEL)
LAKE SUPERIOR LAKE MICHIGAN-HURON
10/01/09 DAILY MEAN 601.7/183.41 578.4/176.31
10/31/09 DAILY MEAN 601.6/183.37 578.5/176.32
AVG SEP 2009 DAILY MEAN 601.8/183.42 578.6/176.37
AVG OCT 2008 DAILY MEAN 601.4/183.32 577.7/176.10
LONG TERM OCT DAILY MEAN 602.1/183.52 578.9/176.45
MAXIMUM OCT DAILY MEAN 603.4/183.91 582.3/177.50
(1985) (1986)
MINIMUM OCT DAILY MEAN 600.7/183.10 576.4/175.70
(1925) (1964)
OBTAIN GREAT LAKES WATER LEVEL DATA AS REPORTED BY THE U.S. ARMY
CORPS OF ENGINEERS AT
HTTP://WWW.LRE.USACE.ARMY.MIL/GREATLAKES/HH/GREATLAKESWATERLEVELS/
CURRENTCONDITIONS/GREATLAKESWATERLEVELS (ALL LOWER CASE).
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OCTOBER CLIMATE HIGHLIGHTS
MORE TO COME LATER.
SOME OTHER TEMPERATURE AND PRECIPITATION OBSERVATIONS ACROSS UPPER
MICHIGAN IN OCTOBER 2009 INCLUDE:
WATTON (BARAGA COUNTY)...AVERAGE TEMPERATURE 37.9 DEGREES
PRECIPITATION 5.20 INCHES
SNOWFALL 6.8 INCHES
OCTOBER WEATHER SUMMARY
MORE TO COME LATER.
NOVEMBER CLIMATOLOGY
RESIDENTS OF UPPER MICHIGAN FEEL WINTER'S TIGHTENING GRIP MORE AND
MORE OFTEN DURING NOVEMBER AS THE SUN'S WARMING RAYS BECOME
INCREASINGLY FEEBLE. POSSIBLE SUNSHINE DECLINES FROM 605 MINUTES ON
11/1 TO 533 MINUTES ON 11/30. AS A RESULT...THE AVERAGE TEMPERATURE
DURING NOVEMBER IS AS MUCH AS 15 DEGREES LOWER THAN IN OCTOBER.
DESPITE THE INEVITABLE DECLINE TOWARD WINTER...PLEASANTLY MILD
WEATHER OFTEN MAKES AN APPEARANCE DURING THE ELEVENTH MONTH. MANY
RECENT NOVEMBERS HAVE BEEN QUITE MILD. IN FACT...NOVEMBER 2001 GOES
DOWN IN THE RECORD BOOKS AS THE WARMEST EVER AT ALL REPORTING
STATIONS WITH A MEAN TEMPERATURE 10 OR MORE DEGREES ABOVE NORMAL.
MANY STATIONS REPORTED MORE DAYS WITH A HIGH TEMPERATURE OVER 50
THAN IN ANY OTHER ELEVENTH MONTH...18 DAYS AT IRONWOOD AND IRON
MOUNTAIN AND 13 DAYS AT THE MARQUETTE NWS. AT THE MARQUETTE NWS...13
DAILY RECORD HIGH MAXIMUM OR MINIMUM TEMPERATURE RECORDS WERE EITHER
BROKEN OR TIED. NOVEMBER 1999 IS THE SECOND WARMEST ON RECORD AT
MOST PLACES. BETWEEN 11/8/99 AND 11/10/99...HIGH TEMPERATURES OVER
MUCH OF UPPER MICHIGAN REACHED NEAR OR ABOVE 70. RESIDENTS OF IRON
MOUNTAIN ENJOYED A MONTHLY- RECORD-TYING 75-DEGREE AFTERNOON ON
11/9/99. THE 73-DEGREE READING AT THE MARQUETTE NWS ON 11/9/99 WAS
THE HIGHEST NOVEMBER TEMPERATURE EVER RECORDED AT THAT STATION.
IRONWOOD REACHED 72 ON THAT DAY... ONLY TWO DEGREES SHY OF THE
MONTHLY RECORD 74. OTHER WARM SPELLS OCCURRED IN EARLY NOVEMBER
1990...1978 AND 1975. THE RECORD WARMTH THAT ENVELOPED UPPER
MICHIGAN DURING THE FIRST WEEK OF NOVEMBER 1975 AND SPREAD TO THE
EAST COAST DURING THE SECOND WEEK CONTRIBUTED TO THE INTENSITY OF
THE STORM THAT ROARED OVER LAKE SUPERIOR ON 11/10/75 AND SANK THE
EDMUND FITZGERALD.
BUT NOVEMBER CAN ALSO FEATURE ALMOST MID WINTER CHILL. NOVEMBER
1995...1976...AND 1959 ARE AMONG THE TOP THREE COLDEST NOVEMBERS AT
MOST LOCATIONS. TEMPERATURES AVERAGED AS MUCH AS 5 TO 8 DEGREES
BELOW NORMAL DURING THESE MONTHS...WITH READINGS MORE TYPICAL OF
DECEMBER. ONE OF THE COLDEST AIRMASSES EVER TO INVADE UPPER MICHIGAN
DURING NOVEMBER IMPACTED THE WESTERN GREAT LAKES BETWEEN 11/28/76
AND 11/30/76. THE LOWEST NOVEMBER TEMPERATURE EVER OBSERVED AT
IRONWOOD (-18)...THE MARQUETTE NWS (-13)...IRON MOUNTAIN (-10)...
NEWBERRY (-10) AND MANISTIQUE (-6) OCCURRED ON ONE OF THOSE THREE
DAYS.
SIGNIFICANT SNOW...ESPECIALLY LAKE EFFECT SNOW...BECOMES A GREATER
THREAT DURING NOVEMBER. AS MORE FREQUENT COLD AIR INVASIONS PASS
OVER THE RELATIVELY WARM WATERS OF LAKE SUPERIOR...THE AIRMASS
BECOMES INCREASINGLY UNSTABLE. THE RESULT IS A GREATER FREQUENCY OF
SNOW SHOWERS...WHICH ARE TYPICALLY HEAVIER AND MORE WIDESPREAD OVER
HIGHER TERRAIN JUST DOWNWIND OF LAKE SUPERIOR. THE AGGREGATE WARMTH
OF ALL THE GREAT LAKES ALSO INFLUENCES THE INTENSITY AND PATH OF
LARGE LOW PRESSURE SYSTEMS APPROACHING THE AREA. IN MOST CASES...
SURFACE LOWS INTENSIFY MORE QUICKLY AND TAKE A PATH FARTHER WEST
THAN THEY WOULD IF THE LAKES WERE ABSENT. THIS DEVIATION IN STORM
PATH IN GENERAL FAVORS HEAVIER SNOW ACROSS WESTERN UPPER MICHIGAN
THAN IN THE EAST. HIGHER TERRAIN AREAS ACROSS THE WEST THAT ALSO ARE
FAVORED FOR LAKE EFFECT SNOW THUS HAVE THE HIGHEST NORMAL NOVEMBER
SNOWFALL (AND LIQUID EQUIVALENT PRECIPITATION). IRONWOOD WAS
SMOTHERED UNDER 78 INCHES OF THE WHITE STUFF IN NOVEMBER 1989.
AVERAGE SNOW RANGES FROM NEARLY 24 INCHES AT HOUGHTON AND IRONWOOD
TO AROUND 6 INCHES OR LESS FROM IRON MOUNTAIN TO MANISTIQUE.
DESTABILIZATION OF COLD AIR MASSES OVER LAKE SUPERIOR AND RAPIDLY
INTENSIFYING SURFACE LOWS HELP MAKE NOVEMBER ONE OF THE WINDIEST
MONTHS OF THE YEAR...ESPECIALLY NEAR LAKE SUPERIOR. THERE IS TRUTH
IN THE PHRASE...GALES OF NOVEMBER.
NOVEMBER FORECAST
THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING A BETTER THAN
CLIMATOLOGICAL CHANCE OF AN ABOVE NORMAL MONTHLY AVERAGE TEMPERATURE
BUT EQUAL CHANCES OF ABOVE AND BELOW NORMAL PRECIPITATION OVER ALL
OF UPPER MICHIGAN IN NOVEMBER 2009.
OUTLOOK FOR WINTER
THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING A BETTER THAN
CLIMATOLOGICAL CHANCE OF AN ABOVE NORMAL 3-MONTH AVERAGE
TEMPERATURE BUT EQUAL CHANCES OF ABOVE AND BELOW NORMAL
PRECIPITATION OVER ALL OF UPPER MICHIGAN IN DECEMBER 2009 THROUGH
FEBRUARY 2010. WATER TEMPERATURES IN THE TROPICAL EASTERN PACIFIC
OCEAN ARE FORECAST TO REMAIN ABOVE NORMAL INTO THIS COMING WINTER.
THIS SO CALLED EL NINO PHENOMENON OFTEN CAUSES TEMPERATURES ACROSS
THE NORTH CENTRAL UNITED STATES TO AVERAGE ABOVE NORMAL...ESPECIALLY
DURING THE COLD SEASON. CPC INDICATES THERE IS AN EQUAL CHANCE OF
ABOVE AND BELOW NORMAL 3-MONTH PRECIPITATION OVER ALL OF UPPER
MICHIGAN IN NOVEMBER THROUGH JANUARY.
GO TO HTTP://WWW.WEATHER.GOV/CLIMATE/L3MTO.PHP TO ACCESS DETAILED
LOCAL THREE-MONTH AVERAGE TEMPERATURE OUTLOOKS FOR A NUMBER OF SITES
IN UPPER MICHIGAN.
CHECK OUT HTTP://WWW.CPC.NCEP.NOAA.GOV FOR MORE INFORMATION ABOUT
THE CLIMATE PREDICTION CENTER AND MORE LONG RANGE PREDICTIONS.
NOTE THAT STATISTICS FOR THE NATIONAL WEATHER SERVICE OFFICE IN
NEGAUNEE TOWNSHIP ARE BASED ON RECORDS WHICH BEGAN IN OCTOBER 1961.
THIRTY YEAR NORMALS USED ARE FOR THE PERIOD OF 1971 THROUGH 2000.
NOTE ALL TEMPERATURES ARE IN FAHRENHEIT AND PRECIPITATION IS IN
INCHES. ALL CLIMATE DATA LISTED IN THIS PRODUCT ARE UNOFFICIAL. FOR
OFFICIAL DATA...PLEASE REFER TO THE NATIONAL CLIMATIC DATA CENTER.
ALSO NOTE THIS DISCUSSION DOES NOT INCLUDE DATA FROM CHIPPEWA AND
MACKINAC COUNTIES.
NWS MARQUETTE WEB PAGE IS AT HTTP://WWW.WEATHER.GOV/MQT (ALL LOWER
CASE). CONTACT THE NATIONAL CLIMATIC DATA CENTER AT (828) 271-4800
OR WWW.NCDC.NOAA.GOV.
KC
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