Climatological Report (Monthly)
Issued by NWS Marquette, MI

Home | Current Version | Previous Version | Text Only | Print | Product List | Glossary On
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48
000
CXUS53 KMQT 200953 AAC
CLMMQT

CLIMATE REPORT...FINAL
NATIONAL WEATHER SERVICE MARQUETTE MI
555 AM EDT FRI SEP 20 2013

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

...THE MARQUETTE MI CLIMATE SUMMARY FOR THE MONTH OF AUGUST 2013...

CLIMATE NORMAL PERIOD 1981 TO 2010
CLIMATE RECORD PERIOD 1961 TO 2013

WEATHER         OBSERVED          NORMAL  DEPART  LAST YEAR`S
                 VALUE   DATE(S)  VALUE   FROM    VALUE  DATE(S)
                                          NORMAL
................................................................
TEMPERATURE (F)
RECORD
 HIGH              96   08/06/2001
 LOW               31   08/30/1976
HIGHEST            92   08/25        73      19       90  08/30
LOWEST             42   08/13        52     -10       43  08/19
AVG. MAXIMUM     75.5              74.3     1.2     75.3
AVG. MINIMUM     53.1              53.1     0.0     53.7
MEAN             64.3              63.7     0.6     64.5
DAYS MAX >= 90      1               0.5     0.5        1
DAYS MAX <= 32      0               0.0     0.0        0
DAYS MIN <= 32      0               0.0     0.0        0
DAYS MIN <= 0       0               0.0     0.0        0

PRECIPITATION (INCHES)
RECORD
 MAXIMUM         8.59   1988
 MINIMUM         0.44   2008
TOTALS           2.32              3.05   -0.73     2.42
DAILY AVG.       0.07              0.10   -0.03     0.08
DAYS >= .01        14              10.7     3.3       12
DAYS >= .10         7               6.1     0.9        6
DAYS >= .50         2               1.9     0.1        2
DAYS >= 1.00        0               0.7    -0.7        0
GREATEST
 24 HR. TOTAL    0.89   08/26 TO 08/27

SNOWFALL (INCHES)
RECORDS
 TOTAL            0.0   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 >= 1.0         0               0.0     0.0        0
GREATEST
 SNOW DEPTH         0   MM                             0  MM
 24 HR TOTAL      0.0   MM

DEGREE_DAYS
HEATING TOTAL     102               106      -4       76
 SINCE 7/1        214               185      29       90
COOLING TOTAL      90                66      24       67
 SINCE 1/1        270               220      50      333
.................................................................

WIND (MPH)
AVERAGE WIND SPEED              MM
HIGHEST WIND SPEED/DIRECTION    MM        DATE   MM
HIGHEST GUST SPEED/DIRECTION    41/315    DATE  08/26

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                3     RAIN                       4
LIGHT RAIN               16     FREEZING RAIN              0
LT FREEZING RAIN          0     HAIL                       0
HEAVY SNOW                0     SNOW                       0
LIGHT SNOW                0     SLEET                      0
FOG                       6     FOG W/VIS <= 1/4 MILE      1
HAZE                      0

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

&&

...AUGUST 2013 MONTHLY CLIMATE SUMMARY FOR UPPER MICHIGAN...
(THIS DISCUSSION DOES NOT INCLUDE CHIPPEWA AND MACKINAC COUNTIES)

...DRY NORTHWEST BUT WETTER EAST AND NEAR THE WISCONSIN BORDER...
...SECOND WETTEST AUGUST AT IRONWOOD...

...MONTHLY MEAN TEMPERATURE NOT FAR FROM NORMAL DESPITE EXTREMES...

AUGUST CLIMATE STATISTICS FOR THE MARQUETTE NWS IN NEGAUNEE TOWNSHIP

                                    NORMAL   DEPARTURE
AVERAGE TEMPERATURE         64.3     63.7   PLUS    0.6
AVERAGE HIGH TEMPERATURE    75.5     74.3   PLUS    1.2
AVERAGE LOW TEMPERATURE     53.1     53.1             0
HEATING DEGREE DAYS          102      106  MINUS      4
COOLING DEGREE DAYS           90       66   PLUS     24
TOTAL PRECIPITATION         2.32     3.05  MINUS   0.73
TOTAL SNOWFALL                 0        0             0

HIGHEST TEMPERATURE:                    92 ON 8/25
LOWEST TEMPERATURE:                     42 ON 8/13
GREATEST CALENDAR DAY PRECIPITATION:  0.81 ON 8/26
GREATEST 24 HOUR PRECIPITATION:       0.89 ON 8/26-8/27
GREATEST CALENDAR DAY SNOWFALL:          0
GREATEST 24 HOUR SNOWFALL:               0
PEAK WIND SPEED: 41 MPH FROM THE NORTHWEST ON 8/26

DAILY RECORD HIGH MAXIMUM TEMPERATURE ON 8/25...92 (OLD RECORD
                                                    88...1993/2012)
DAILY RECORD PRECIPITATION ON 8/26...0.81 (0.75...1967)
---------------------------------------------------------------------
GREAT LAKES WATER LEVELS (FEET/METERS ABOVE MEAN SEA LEVEL)

                            LAKE SUPERIOR  LAKE MICHIGAN-HURON
8/01/13 DAILY MEAN          601.86/183.44     577.73/176.09
8/31/13 DAILY MEAN          601.94/183.47     577.70/176.08
AVG JUL 2013 DAILY MEAN     601.60/183.37     577.72/176.09
AVG AUG 2012 DAILY MEAN     601.28/183.27     577.34/175.97
LONG TERM AUG DAILY MEAN    602.13/183.53     579.23/176.55
MAXIMUM AUG DAILY MEAN      603.22/183.86     581.99/177.39
                                (1952)           (1986)
MINIMUM AUG DAILY MEAN      600.43/183.01     576.67/175.77
                                (2007)           (1964)

...GREAT LAKES WATER LEVELS STEADY IN AUGUST...

AFTER SIGNIFICANT RISES IN WATER LEVEL THE PAST COUPLE OF MONTHS...
THE WATER LEVEL ON LAKES SUPERIOR AND MICHIGAN/HURON HELD NEARLY
STEADY IN AUGUST AS GREATER EVAPORATION ASSOCIATED WITH HIGHER WATER
TEMPERATURES NEARLY BALANCED INCOMING RUNOFF FROM THE LAND DRAINAGE
BASINS. THE AUGUST 2013 WATER LEVELS ON THE WESTERN LAKES ARE ABOUT
3-4 INCHES HIGHER THAN OBSERVED IN AUGUST 2012...BUT STILL ABOUT 12
INCHES BELOW NORMAL ON LAKES MICHIGAN/HURON AND 10 INCHES BELOW
AVERAGE FOR LAKE SUPERIOR.

OBTAIN GREAT LAKES WATER LEVEL DATA AS REPORTED BY THE U.S. ARMY
CORPS OF ENGINEERS AT

HTTP://WWW.LRE.USACE.ARMY.MIL/MISSIONS/GREATLAKESINFORMATION/
       GREATLAKESWATERLEVELS/CURRENTCONDITIONS.ASPX (ALL LOWER CASE).
---------------------------------------------------------------------
                       AUGUST CLIMATE HIGHLIGHTS

HIGHEST REPORTED TEMPERATURE...95 AT BARAGA AND ONTONAGON ON 8/25

LOWEST REPORTED TEMPERATURE...31 AT A LOCATION 10 MILES SOUTH OF
                               MUNISING ON 8/15

HIGHEST AVERAGE TEMPERATURE...67.7 DEGREES AT MARQUETTE CITY

LOWEST AVERAGE TEMPERATURE...60.9 DEGREES AT STAMBAUGH IN IRON COUNTY

HIGHEST MONTHLY PRECIPITATION...8.40 INCHES AT IRONWOOD

LOWEST MONTHLY PRECIPITATION...1.06 INCHES AT COPPER HARBOR

THERE WAS A SHARP CONTRAST IN WEATHER REGIMES OBSERVED ACROSS UPPER
MICHIGAN IN AUGUST 2013. DURING THE FIRST HALF OF THE MONTH...A
NORTHWEST FLOW ALOFT ON THE WESTERN FLANK OF A DEEP UPPER TROUGH
OVER EASTERN CANADA AND THE NORTHEAST U.S. FUNNELED COOL CANADIAN
AIRMASSES INTO THE UPPER GREAT LAKES. MEAN DAILY TEMPERATURES RAN
BELOW NORMAL ALMOST EVERY DAY FROM 8/1 THROUGH 8/16...WITH DAYTIME
HIGHS IN THE 60S AND OVERNIGHT LOWS IN THE 40S COMMON. THE OVERALL
TEMPERATURE DEPARTURE FROM 8/1 THROUGH 8/15 RAN 5 TO 8 DEGREES BELOW
AVERAGE. THE TROUGH WEAKENED AFTER 8/15...AND AN UPPER RIDGE
EXPANDED NORTH THROUGH THE NORTHERN PLAINS AND THE UPPER MIDWEST
TOWARD THE UPPER GREAT LAKES. WITH THE ARRIVAL OF WARMER AIR...MEAN
DAILY TEMPERATURES ON 8/17 THROUGH 8/31 ENDED UP ABOVE NORMAL ON ALL
BUT A FEW DAYS. DURING THIS TWO-WEEK STRETCH...AFTERNOON
TEMPERATURES IN THE 80S AND OVERNIGHT LOWS IN THE 60S WERE THE
RULE...LIFTING THE OVERALL TEMPERATURE DEPARTURE THE SECOND HALF OF
AUGUST TO 6 TO 9 DEGREES ABOVE NORMAL. THE RESULT OF THE AVERAGE OF
THESE TWO HALF EXTREMES WAS A MEAN MONTHLY TEMPERATURE WITHIN A
DEGREE OF NORMAL.

ALTHOUGH LOWER TEMPERATURES TOWARD 32 ARE MORE LIKELY DURING LATE
AUGUST WHEN NIGHTS BECOME LONGER...IN 2013 THE CHANGE IN WEATHER
PATTERN RESULTED IN A MORE FREQUENT OCCURRENCE OF COOLER WEATHER THE
FIRST HALF OF THE MONTH. AT LEAST ONE LOCATION IN UPPER MICHIGAN
REPORTED A LOW TEMPERATURE IN THE 30S EARLY IN THE MORNING ON 8/4...
8/8...8/10...8/11...8/13-8/16 AND 8/23. ON THE OTHER HAND...THERE
WERE MAXIMUM TEMPERATURES IN THE 90S ON 8/20...8/21 AND 8/25 AFTER
WARMER WEATHER RETURNED. THE HOTTEST AFTERNOON WAS ON 8/25...WHEN
THE THERMOMETER TOPPED OUT AS HIGH AS 95 AT BARAGA AND ONTONAGON.

AS IS OFTEN THE CASE DURING THE SUMMER...PRECIPITATION OVER UPPER
MICHIGAN IN AUGUST VARIED CONSIDERABLY...EVEN ACROSS SHORT
DISTANCES. IN GENERAL...LOCATIONS NEAR THE WISCONSIN BORDER AND EAST
OF A LINE FROM MARQUETTE TO ESCANABA RECORDED ABOVE NORMAL RAINFALL.
OVER THE NORTHWEST...PRECIPITATION TENDED TO RUN BELOW AVERAGE.
IRONWOOD SAW YET ANOTHER MONTH OF WELL ABOVE NORMAL PRECIPITATION
WITH 8.40 INCHES OF RAIN...THANKS MAINLY TO TWO TORRENTIAL RAINFALLS
THE LAST WEEK OF AUGUST. THIS TOTAL...ALMOST 250 PERCENT OF NORMAL
FOR IRONWOOD...LED ALL REPORTING SITES ACROSS UPPER MICHIGAN AND
MARKS AUGUST 2013 AS THE SECOND WETTEST EIGHTH MONTH FOR THAT PLACE.
BUT NOT TOO FAR TO THE NORTHEAST...A LOCATION JUST INLAND FROM
ONTONAGON MISSED MOST OF THE HEAVY RAIN IN LATE AUGUST AND MEASURED
ONLY 1.99 INCHES DURING THE MONTH...JUST SHY OF 70 PERCENT OF
NORMAL. COPPER HARBOR WAS THE DRIEST LOCATION WITH ONLY 1.06 INCHES
OF RAIN THE WHOLE MONTH.

A PAIR OF DISTURBANCES DRIFTING EAST THROUGH ONTARIO BROUGHT PERIODS
OF SHOWERS AND THUNDERSTORMS TO THE UPPER GREAT LAKES ON 8/5 INTO
THE MORNING ON 8/7. THE HEAVIEST PRECIPITATION OCCURRED OVER THE
SOUTH CENTRAL DURING THE NIGHT ON 8/6-8/7...WHEN MENOMINEE PICKED UP
1.19 INCHES OF RAIN. THE THUNDERSTORM RESPONSIBLE FOR THIS HEAVY
RAIN ALSO TURNED SEVERE AND CAUSED SOME WIND DAMAGE AT OTHER
LOCATIONS IN FAR SOUTHERN MENOMINEE COUNTY.

ANOTHER CLUSTER OF STRONG TO SEVERE THUNDERSTORMS IMPACTED ALL BUT
NORTHWEST UPPER MICHIGAN ON 8/21 AS AN APPROACHING COLD FRONT LIFTED
THE VERY WARM AND HUMID AIRMASS IN PLACE OVER THE UPPER LAKES. THERE
WAS AT LEAST ONE REPORT OF LARGE HAIL OR DAMAGING WINDS IN IRON...
ONTONAGON...MARQUETTE AND ALGER COUNTIES. GARDEN CORNERS LED
REPORTING STATIONS WITH 1.33 INCHES OF RAIN DURING THIS EVENT.

AS A PAIR OF DISTURBANCES TOPPED THE SPRAWLING UPPER RIDGE OVER THE
PLAINS RESPONSIBLE FOR BLISTERING HEAT FROM THE NORTHERN PLAINS INTO
THE UPPER LAKES AND MIDWEST...CLUSTERS OF SHOWERS AND STRONG TO
SEVERE THUNDERSTORMS IN ADVANCE OF THESE DISTURBANCES TRACKED ACROSS
UPPER MICHIGAN DURING THE NIGHTS ON 8/25-8/26 AND 8/26-8/27. THE
FIRST OUTBREAK ON 8/25-8/26 IMPACTED ALL OF UPPER MICHIGAN WITH
WIDESPREAD RAIN AND INUNDATED IRONWOOD WITH 2.42 INCHES OF
PRECIPITATION. THE MOST SIGNIFICANT WEATHER OCCURRED OVER MARQUETTE
COUNTY IN THE EARLY MORNING HOURS ON 8/26...WHEN DAMAGING WINDS IN
EXCESS OF 60 MPH DOWNED NUMEROUS TREES. ANOTHER SEVERE STORM CAUSED
WIND DAMAGE IN NORTHERN LUCE COUNTY IN THE EARLY MORNING OF 8/26.
AREAS WITHIN 50 MILES OR SO OF THE WISCONSIN BORDER SAW THE HEAVIEST
RAIN AND STRONGEST THUNDERSTORMS IN ADVANCE OF THE SECOND
DISTURBANCE DURING THE NIGHT ON 8/26-8/27. WIND GUSTS REACHED 50 MPH
AT IRON MOUNTAIN AHEAD OF ONE OF THE STRONGER STORMS...AND IRONWOOD
LED REPORTING STATIONS AGAIN WITH 2.10 INCHES OF RAIN. SOME LOCALLY
HEAVY RAIN LINGERED THROUGH THE MORNING ON 8/27 OVER THE SOUTH
CENTRAL.

BANDS OF SHOWERS AND THUNDERSTORMS AHEAD OF ANOTHER DISTURBANCE
MOVING ALONG THE CANADIAN BORDER AND ITS ATTENDANT COLD FRONT
DEVELOPED OVER WESTERN UPPER MICHIGAN IN THE AFTERNOON ON 8/29...
THEN PUSHED EAST BEFORE ENDING IN THE MORNING ON 8/30 FOLLOWING THE
PASSAGE OF THE COLD FRONT. MOHAWK IN KEWEENAW COUNTY SAW THE MOST
RAIN WITH 1.46 INCHES.
---------------------------------------------------------------------
                       ...SUMMER STATISTICS...

                ...WET AND A BIT COOLER THAN NORMAL...

                      JUNE-AUGUST PRECIPITATION

              OBSERVED  NORMAL  DEPARTURE     RECORD       2013 RANK

IRONWOOD       20.74    11.13     +9.61    20.96 /1909/   2ND HIGHEST

NEWBERRY       14.79     9.31     +5.48    16.07 /1952/   2ND HIGHEST

MANISTIQUE     12.85     8.86     +3.99    15.21 /2010/   8TH HIGHEST

MARQUETTE NWS  10.41     8.73     +1.68    17.89 /1968/  12TH HIGHEST

HOUGHTON       11.26     7.48     +3.78    16.49 /1951/  22ND HIGHEST

MARQUETTE CITY 11.41     8.13     +3.28    17.29 /1949/  23RD HIGHEST

MUNISING       10.52     9.11     +1.41    17.35 /2010/      ****

IRON MOUNTAIN  11.10    10.19     +0.91    21.80 /1951/      ****

                   JUNE-AUGUST AVERAGE TEMPERATURE

              OBSERVED  NORMAL  DEPARTURE     RECORD       2013 RANK

MANISTIQUE      61.7     63.0     -1.3     57.8 /1992/    19TH COOLEST

IRONWOOD        63.1     63.8     -0.7     58.2 /1992/    25TH COOLEST

MUNISING        62.0     62.8     -0.8     56.0 /1920/        ****

MARQUETTE CITY  63.8     64.4     -0.6     58.6 /1915/        ****

MARQUETTE NWS   63.0     63.3     -0.3     57.9 /1992/        ****

HOUGHTON        62.6     62.7     -0.1     57.7 /1950/        ****

IRON MOUNTAIN   66.1     66.0     +0.1     61.8 /1927/        ****

NEWBERRY        64.1     63.6     +0.5     57.9 /1992/        ****

**** NOT IN TOP 25
---------------------------------------------------------------------
              ...VERY WET THE PAST COUPLE OF MONTHS...

THE HEAVY RAIN AT IRONWOOD IN AUGUST LIFTS THE 6-MONTH PRECIPITATION
THERE SINCE 3/1 TO OVER 3 FEET...SETTING A NEW 3/1 THROUGH 8/31
RECORD. IN FACT...THIS PRECIPITATION TOTAL OF 36.41 INCHES IS THE
SECOND HIGHEST AMOUNT EVER TO FALL IN ANY 6-MONTH PERIOD AT
IRONWOOD...TRAILING ONLY A WET PERIOD FROM MAY THROUGH OCTOBER IN
1909...WHEN 37.15 INCHES ACCUMULATED THERE.

                   MARCH-AUGUST 2013 PRECIPITATION

                                               RECORD
              OBSERVED  NORMAL  DEPARTURE  /OR PREVIOUS/   2013 RANK

IRONWOOD       36.41    18.88    +17.53    31.34 /1942/    NEW RECORD

NEWBERRY       23.03    16.41     +6.62    28.67 /2002/   5TH HIGHEST

HOUGHTON       22.41    13.38     +9.03    25.75 /1955/   8TH HIGHEST

MARQUETTE NWS  22.20    17.82     +4.38    28.58 /1973/   8TH HIGHEST

MUNISING       20.05    16.38     +3.67    23.74 /1960/  11TH HIGHEST

MANISTIQUE     20.18    15.47     +4.71    26.22 /2002/  12TH HIGHEST

MARQUETTE CITY 19.19    15.11     +4.08    27.03 /1960/  20TH HIGHEST

IRON MOUNTAIN  20.30    17.24     +3.06    25.72 /1942/  24TH HIGHEST

---------------------------------------------------------------------
SOME OTHER TEMPERATURE AND PRECIPITATION OBSERVATIONS ACROSS UPPER
MICHIGAN IN AUGUST 2013 INCLUDE:

IRONWOOD...AVERAGE TEMPERATURE 64.1 (NORMAL)
           PRECIPITATION 8.40 INCHES (5.03 INCHES ABOVE NORMAL)

WATERSMEET (GOGEBIC COUNTY)...PRECIPITATION 5.14 INCHES

ONTONAGON...AVERAGE TEMPERATURE 66.4 (0.3 DEGREE ABOVE NORMAL)
 (6 MILES   PRECIPITATION 1.99 INCHES (0.87 INCH BELOW NORMAL)
  INLAND)

GREENLAND (ONTONAGON COUNTY)...AVERAGE TEMPERATURE 63.1 DEGREES
                               PRECIPITATION 2.22 INCHES

BERGLAND DAM (ONTONAGON COUNTY)...AVERAGE TEMPERATURE 63.2 DEGREES
                                  PRECIPITATION 3.78 INCHES

TWIN LAKES (HOUGHTON COUNTY)...AVERAGE TEMPERATURE 63.6 DEGREES

HOUGHTON COUNTY...AVERAGE TEMPERATURE 64.7 (0.8 DEGREE ABOVE NORMAL)
 AIRPORT          PRECIPITATION 1.72 INCHES (0.69 INCH BELOW NORMAL)

ATLANTIC MINE (HOUGHTON COUNTY)...PRECIPITATION 1.54 INCHES

MOHAWK (KEWEENAW COUNTY)...PRECIPITATION 2.07 INCHES

COPPER HARBOR...AVERAGE TEMPERATURE 64.2 DEGREES
                PRECIPITATION 1.06 INCHES

JACOBSVILLE (HOUGHTON COUNTY)...AVERAGE TEMPERATURE 63.2 DEGREES
                                PRECIPITATION 1.97 INCHES

BARAGA...AVERAGE TEMPERATURE 66.7 DEGREES
         PRECIPITATION 1.95 INCHES

WATTON (BARAGA COUNTY)...AVERAGE TEMPERATURE 62.2 DEGREES
                         PRECIPITATION 1.53 INCHES

HERMAN (BARAGA COUNTY)...PRECIPITATION 2.51 INCHES

CLARKSBURG (MARQUETTE COUNTY)...AVERAGE TEMPERATURE 61.9 DEGREES
                                PRECIPITATION 2.03 INCHES

BIG BAY (MARQUETTE COUNTY)...AVERAGE TEMPERATURE 66.5 DEGREES
                             PRECIPITATION 3.29 INCHES

MARQUETTE CITY...AVERAGE TEMPERATURE 67.7 (1.1 DEGREE ABOVE NORMAL)
                 PRECIPITATION 3.11 INCHES (0.48 INCH ABOVE NORMAL)

HARVEY (MARQUETTE COUNTY)...AVERAGE TEMPERATURE 66.0 DEGREES
                            PRECIPITATION 2.29 INCHES

GWINN (MARQUETTE COUNTY)...PRECIPITATION 1.69 INCHES

CHATHAM (ALGER COUNTY)...AVERAGE TEMPERATURE 65.1 DEGREES
                         PRECIPITATION 2.68 INCHES

MUNISING...AVERAGE TEMPERATURE 64.4 (0.1 DEGREE BELOW NORMAL)
           PRECIPITATION 2.60 INCHES (0.12 INCH ABOVE NORMAL)

WETMORE (ALGER COUNTY)...PRECIPITATION 2.26 INCHES
(15 MILES SOUTH)

 GRAND MARAIS...PRECIPITATION 3.57 INCHES
(10 MILES SOUTH) SNOWFALL 55.4 INCHES

NEWBERRY...AVERAGE TEMPERATURE 65.0 (0.4 DEGREE ABOVE NORMAL)
           PRECIPITATION 3.81 INCHES (0.58 INCH ABOVE NORMAL)

STAMBAUGH (IRON COUNTY)...AVERAGE TEMPERATURE 60.9 DEGREES
                          PRECIPITATION 4.27 INCHES

AMASA (IRON COUNTY)...PRECIPITATION 3.57 INCHES

IRON MOUNTAIN...AVERAGE TEMPERATURE 66.8 (0.4 DEGREE ABOVE NORMAL)
                PRECIPITATION 3.99 INCHES (0.73 INCH ABOVE NORMAL)

NORWAY (DICKINSON COUNTY)...AVERAGE TEMPERATURE 66.5 DEGREES
                            PRECIPITATION 3.37 INCHES

DAGGETT (MENOMINEE COUNTY)...PRECIPITATION 4.13 INCHES

MENOMINEE...PRECIPITATION 4.08 INCHES

ESCANABA...AVERAGE TEMPERATURE 64.3 DEGREES
           PRECIPITATION 2.65 INCHES

GLADSTONE (DELTA COUNTY)...PRECIPITATION 2.38 INCHES

GARDEN CORNERS (DELTA COUNTY)...AVERAGE TEMPERATURE 63.9 DEGREES
                                PRECIPITATION 3.68 INCHES

COOKS (SCHOOLCRAFT COUNTY)...PRECIPITATION 2.98 INCHES

MANISTIQUE...AVERAGE TEMPERATURE 63.9 (0.7 DEGREE BELOW NORMAL)
             PRECIPITATION 3.50 INCHES (0.25 INCH ABOVE NORMAL)

                        AUGUST WEATHER SUMMARY

THE NORTHWEST FLOW ALOFT AROUND A CLOSED LOW OVER NORTHERN ONTARIO
ADVECTED COOL CANADIAN AIR OVER UPPER MICHIGAN IN EARLY AUGUST. A
PAIR OF DISTURBANCES EMBEDDED IN THIS FLOW MOVED THROUGH THE UPPER
GREAT LAKES ON 8/1 AND 8/2...BUT ONLY SCATTERED SHOWERS AND A FEW
THUNDERSTORMS ACCOMPANIED THEIR PASSAGE. UP TO 0.25 TO 0.50 INCH OF
RAIN FELL UNDER SOME OVER THE HEAVIER SHOWERS THAT IMPACTED AREAS
MAINLY NEAR THE WISCONSIN BORDER DURING THE NIGHT ON 8/1-8/2.
BERGLAND DAM IN ONTONAGON COUNTY LED REPORTING SITES WITH 0.93 INCH
OF RAIN. TRAILING CANADIAN HIGH PRESSURE BROUGHT A DRIER AND COOLER
AIRMASS FOR 8/3 AND 8/4. NEAR NORMAL MEAN DAILY TEMPERATURES ON 8/1
AND 8/2 FELL TO BETWEEN 5 AND 10 DEGREES BELOW AVERAGE ON 8/3 AND
8/4. THE EARLY MORNING ON 8/4 WAS PARTICULARLY CHILLY AS THE HIGH
PRESSURE SYSTEM MOVED NEARLY OVERHEAD. WITH CLEAR SKIES AND LIGHT
WINDS...THE MERCURY DIPPED INTO THE 30S AT SOME OF THE INTERIOR COOL
SPOTS AND AS LOW AS 37 AT STAMBAUGH IN IRON COUNTY.

A PAIR OF DISTURBANCES DRIFTING EAST THROUGH ONTARIO AROUND THE
CLOSED LOW NEAR HUDSON BAY BROUGHT PERIODS OF SHOWERS AND
THUNDERSTORMS TO UPPER MICHIGAN ON 8/5 INTO THE MORNING ON 8/7. THE
HEAVIEST PRECIPITATION OCCURRED OVER THE SOUTH CENTRAL DURING THE
NIGHT ON 8/6-8/7...WHEN MENOMINEE PICKED UP 1.19 INCHES OF RAIN. THE
THUNDERSTORM RESPONSIBLE FOR THIS HEAVY RAIN ALSO TURNED SEVERE AND
CAUSED SOME WIND DAMAGE AT OTHER LOCATIONS IN FAR SOUTHERN MENOMINEE
COUNTY. MOST PLACES PICKED UP 0.25 TO 0.75 INCH OF RAIN DURING THIS
PERIOD. UNDER A CLOUDY SKY...THE DAY ON 8/5 WAS COOL WITH A MEAN
DAILY TEMPERATURE AROUND 10 DEGREES BELOW NORMAL. THE ARRIVAL OF
SOMEWHAT WARMER AIR AND PARTIAL CLEARING ON 8/6 BEFORE THE MORE
SIGNIFICANT SHOWERS ARRIVED THE FOLLOWING NIGHT ALLOWED TEMPERATURES
TO RECOVER TO NEAR NORMAL. ANOTHER CANADIAN AIRMASS FOLLOWED THE
TRAILING DISTURBANCE AND ACCOMPANYING COLD FRONTAL PASSAGE ON
8/7...DROPPING THE MEAN DAILY TEMPERATURE ON THAT DAY TO 5 TO 10
DEGREES BELOW AVERAGE DESPITE SOME AFTERNOON SUNSHINE.

A CHILLY NIGHT FOLLOWED ON 8/7-8/8 AS THE HIGH PRESSURE SYSTEM
PASSED OVERHEAD. THE THERMOMETER BOTTOMED OUT IN THE 30S AT SEVERAL
OF THE INTERIOR COLD SPOTS AND REACHED 35 AT A SPOT JUST INLAND FROM
MUNISING AT SUNRISE ON 8/8. ANOTHER DISTURBANCE SWINGING AROUND THE
PERSISTENT TROUGH CENTERED IN NORTHERN ONTARIO BROUGHT MORE CLOUDS
AND ANOTHER ROUND OF SHOWERS TO UPPER MICHIGAN ON 8/8 INTO EARLY ON
8/9. RAINFALL WAS LESS THAN 0.25 INCH ALMOST EVERYWHERE THAT SAW THE
SHOWERS...BUT AS MUCH AS 0.44 INCH FELL AT WITCH LAKE IN MARQUETTE
COUNTY. NORTHWEST WINDS GUSTING TO 30 TO 35 MPH IN THE WAKE OF THE
PASSING DISTURBANCE ADVECTED MORE COOL CANADIAN AIR INTO THE UPPER
GREAT LAKES ON 8/9. THE RESPONSIBLE HIGH PRESSURE SYSTEM LINGERED
INTO EARLY 8/11...BRINGING MOSTLY CLEAR SKIES EXCEPT FOR SOME
DAYTIME CUMULUS CLOUDS AWAY FROM THE GREAT LAKES DURING THE
AFTERNOON ON 8/10. LOW TEMPERATURES FELL INTO THE 30S AGAIN OVER
PARTS OF THE INTERIOR DURING THE NIGHTS ON 8/9-8/10 AND 8/10-8/11
AND ALL THE WAY TO 35 AT SOME OF THE COLD SPOTS NEAR MUNISING AND
NEWBERRY AT SUNRISE ON 8/10. THE THERMOMETER READ AS LOW AS 37 AT
THESE SAME LOCATIONS EARLY ON 8/11. AVERAGE DAILY TEMPERATURES ON
8/8 THROUGH 8/10 AVERAGED 5 TO 10 DEGREES BELOW THE MEAN.

ANOTHER DISTURBANCE MOVING AROUND THE PERSISTENT UPPER TROUGH NEAR
HUDSON BAY RESULTED IN PERIODS OF CLOUDS AND SCATTERED SHOWERS ALONG
WITH A FEW THUNDERSTORMS ON 8/11 AND 8/12. THE MOST NUMEROUS SHOWERS
AND HEAVIER RAIN OCCURRED EAST OF A LINE FROM MUNISING TO ESCANABA
ON 8/12...WHEN A COUPLE PLACES PICKED UP 0.50 INCH OF RAIN OR MORE.
MANISTIQUE WAS WETTEST WITH 0.71 INCH. MOST LOCATIONS OVER THE WEST
HALF OF UPPER MICHIGAN LOGGED LESS THAN 0.05 TO 0.10 INCH OF RAIN ON
THESE TWO DAYS. AVERAGE DAILY TEMPERATURES ON 8/11 AND 8/12 WERE A
FEW DEGREES BELOW NORMAL. A TRAILING COLD FRONT PASSED IN THE
MORNING ON 8/13 ACCOMPANIED BY SOME CLOUDS AND A FEW LIGHT SHOWERS
THAT DROPPED NO MORE THAN A FEW HUNDREDTHS OF AN INCH OF RAIN. THE
INCOMING CANADIAN AIRMASS WAS SO COOL AFTERNOON TEMPERATURES FAILED
TO RISE OUT OF THE 50S AT SOME LOCATIONS OVER THE HIGHER TERRAIN OF
THE NORTHWEST...SETTING SOME NEW DAILY RECORD LOW MAXIMUMS FOR 8/13
AND LOWERING THE MEAN DAILY TEMPERATURE UP TO 15 DEGREES BELOW
NORMAL.

THE UPPER AIR PATTERN BEGAN TO CHANGE SIGNIFICANTLY IN MID-AUGUST AS
THE PERSISTENT...DEEP TROUGH NEAR HUDSON BAY BEGAN TO WEAKEN AND
GIVE WAY AN UPPER RIDGE BUILDING OVER CENTRAL NORTH AMERICA. THE
HIGH PRESSURE SYSTEM UNDER THE STRENGTHENING RIDGE WAS ORIENTED FROM
THE CANADIAN PRAIRIES INTO THE UPPER MIDWEST ON 8/14 BUT THEN
DRIFTED INTO THE OHIO RIVER VALLEY AND MID-ATLANTIC STATES BY 8/16
AS THE UPPER RIDGE PRESSED SLOWLY TO THE EAST. UNDER THIS SPRAWLING
HIGH...THE WEATHER OVER UPPER MICHIGAN WAS DRY WITH MOSTLY SUNNY
AFTERNOONS AND MAINLY CLEAR...COOL NIGHTS. THERE WAS A SLOW WARMING
TREND DURING THESE 3 DAYS...WITH MEAN DAILY TEMPERATURES NEAR 10
DEGREES BELOW AVERAGE ON 8/14 RISING TO NEAR NORMAL ON 8/16. EARLY
MORNING TEMPERATURES EACH OF THESE DAYS DIPPED INTO THE 30S AT THE
COLDER INTERIOR LOCATIONS...FALLING AS LOW AS 32 AT STAMBAUGH ON
8/14...THE MONTHLY LOW OF 31 AT A LOCATION 10 MILES SOUTH OF
MUNISING ON 8/15...AND 35 AT THE COOL SPOT NEAR NEWBERRY ON 8/16.

AS THE SURFACE HIGH DRIFTED EAST AND OFF THE NEW ENGLAND COAST ON
8/18...A SOUTHWEST FLOW AROUND THIS DEPARTING FEATURE AS WELL AS
PLENTY OF DAYTIME SUNSHINE RESULTED IN A CONTINUED SLOW WARMING
TREND WITH MEAN DAILY TEMPERATURE RISING TO AROUND 5 DEGREES ABOVE
NORMAL ON 8/17 AND 8/18. ALTHOUGH A WEAK DISTURBANCE CROSSING
ONTARIO BROUGHT MORE CLOUDS TO THE U.P. ON 8/19...THE OVERALL
DRYNESS OF THE AIRMASS LIMITED THE PRECIPITATION TO JUST A FEW
SPRINKLES. THE MEAN DAILY TEMPERATURE ON 8/19 REMAINED AROUND 5
DEGREES ABOVE NORMAL. A MUCH WARMER AND MORE HUMID AIRMASS FOLLOWED
INTO THE GREAT LAKES ON 8/20 AND 8/21 IN THE PERSISTENT SOUTHWEST
FLOW AROUND THE SLOW MOVING HIGH ALONG THE MID-ATLANTIC COAST. THE
THERMOMETER SURGED TO 90 AT A FEW LOCATIONS ON BOTH AFTERNOONS...
INCLUDING GAY IN KEWEENAW COUNTY AND BARAGA ON 8/20 AND THEN CHATHAM
IN ALGER COUNTY...RANDVILLE IN DICKINSON COUNTY...MUNISING AND IRON
MOUNTAIN ON 8/21. READINGS ALSO FAILED TO FALL BELOW 70 AT SOME OF
THE WARMER LOCATIONS NEAR LAKE SUPERIOR DURING THE NIGHT ON 8/20-
8/21...LIFTING MEAN DAILY TEMPERATURES ON BOTH 8/20 AND 8/21 TO 10
TO 15 DEGREES ABOVE NORMAL.

AS A STRONG DISTURBANCE CROSSING SOUTHERN CANADA AND ITS ATTENDANT
COLD FRONT MOVING THROUGH MINNESOTA INTERACTED WITH THE VERY WARM
AND HUMID AIRMASS IN PLACE...NUMEROUS SHOWERS AND THUNDERSTORMS
ERUPTED OVER ALL BUT NORTHWEST UPPER MICHIGAN IN THE AFTERNOON AND
EVENING ON 8/21. HAIL AS LARGE AS QUARTERS AND GOLF BALLS FELL NEAR
CHATHAM...EBEN JUNCTION...TRENARY AND GRAND MARAIS IN ALGER
COUNTY...SHOT POINT IN MARQUETTE COUNTY AND BEWABIC STATE PARK IN
IRON COUNTY UNDER THE STRONGEST SEVERE STORMS. THERE WERE ALSO
NUMEROUS TREES KNOCKED DOWN BY DAMAGING WINDS AT BERGLAND IN
ONTONAGON COUNTY. SOME HEAVY RAIN ALSO FELL...WITH UP TO 1.33 INCHES
AT GARDEN CORNERS IN DELTA COUNTY. STAMBAUGH AND CHATHAM PICKED UP
AROUND AN INCH. LOCATIONS OVER FAR NORTHWEST MARQUETTE COUNTY...
NORTHERN BARAGA COUNTY AND THE KEWEENAW FOR THE MOST PART MISSED OUT
ON THE RAIN AND THUNDER. FOLLOWING THE COLD FRONTAL PASSAGE EARLY IN
THE MORNING ON 8/22...THE WEATHER THEN TURNED MOSTLY CLEAR...COOLER
AND LESS HUMID THROUGH 8/23 AS HIGH PRESSURE MOVED THROUGH THE UPPER
GREAT LAKES. THE THERMOMETER AVERAGED NEAR NORMAL ON BOTH 8/22 AND
8/23.

THE HIGH PRESSURE SYSTEM RESPONSIBLE FOR THE PLEASANT WEATHER ON
8/22 AND 8/23 SHIFTED TO THE EAST ON 8/24. SOUTH WINDS GUSTING UP TO
30 TO 35 MPH IN ITS WAKE BROUGHT A RETURN OF WARMER AIR...LIFTING
MEAN DAILY TEMPERATURES ON 8/24 BACK TO 5 DEGREES ABOVE NORMAL UNDER
A MOSTLY SUNNY SKY. AS A WARM FRONT MOVED THROUGH DURING THE NIGHT
ON 8/24-8/25...MORE CLOUDS AND A FEW SHOWERS AND THUNDERSTORMS
ROLLED INTO UPPER MICHIGAN. MOST PLACES THAT SAW THE RAIN PICKED UP
NO MORE THAN 0.05 TO 0.10 INCH...BUT STAMBAUGH HAD 0.21 INCH UNDER
ONE OF THE HEAVIER SHOWERS. THE COMBINATION OF THE INCREASING CLOUDS
AND STEADY SOUTH WIND LIMITED THE NOCTURNAL FALL OF TEMPERATURE...
AND THE MERCURY NEVER FELL BELOW 70 OVER PORTIONS OF THE WEST HALF
NEAR LAKE SUPERIOR THROUGH SUNRISE ON 8/25. LINGERING CLOUDS AND
SHOWERS ASSOCIATED WITH THE WARM FRONT LIFTED TO THE NORTH IN THE
MORNING WITH THE PASSAGE OF THIS BOUNDARY...GIVING WAY TO A VERY
WARM AND HUMID SUMMER-LIKE AIRMASS IN THE AFTERNOON ON 8/25. THE
MERCURY PEAKED IN THE 90S AT MANY PLACES AWAY FROM THE MODERATING
INFLUENCE OF LAKE MICHIGAN AND AS HIGH AS 95 AT BARAGA AND
ONTONAGON. ALTHOUGH SOUTHWEST WINDS GUSTING TO 35 TO 40 MPH TOOK
A BIT OF THE EDGE OFF THE HEAT...THE HIGH HUMIDITY STILL MADE FOR AN
OPPRESSIVE DAY AS THE MEAN DAILY TEMPERATURE REACHED AS HIGH AS 15
TO 20 DEGREES ABOVE NORMAL.

A DISTURBANCE ROTATING THROUGH NORTHERN MINNESOTA ON THE NORTHERN
FLANK OF THE UPPER RIDGE RESPONSIBLE FOR THIS HEAT BROUGHT SHOWERS
AND THUNDERSTORMS WITH SOME LOCALLY HEAVY RAIN TO ALL OF UPPER
MICHIGAN DURING THE NIGHT ON 8/25-8/26. SOME LOCATIONS WERE
INUNDATED WITH AN INCH OF RAIN OR MORE...INCLUDING IRONWOOD WITH
2.42 INCHES AND NEWBERRY WITH 1.80 INCHES. MOST LOCATIONS AWAY FROM
THE KEWEENAW SAW AT LEAST 0.25 TO 0.50 INCH OF PRECIPITATION. THE
MOST SIGNIFICANT WEATHER OCCURRED OVER MARQUETTE COUNTY IN THE EARLY
MORNING HOURS ON 8/26...WHEN DAMAGING WINDS IN EXCESS OF 60 MPH
DOWNED NUMEROUS TREES. ANOTHER SEVERE STORM CAUSED WIND DAMAGE IN
NORTHERN LUCE COUNTY IN THE EARLY MORNING OF 8/26. AFTER LINGERING
SHOWERS AND STORMS OVER THE SOUTHEAST ENDED EARLY ON 8/26...A WEAK
HIGH PRESSURE SYSTEM BROUGHT MORE SUNSHINE AND SOMEWHAT COOLER BUT
STILL HUMID CONDITIONS. THE MEAN DAILY TEMPERATURE REMAINED 10 TO 15
DEGREES ABOVE NORMAL ON 8/26.

A COMPLEX OF SHOWERS AND THUNDERSTORMS ASSOCIATED WITH YET ANOTHER
DISTURBANCE MOVING OVER THE TOP OF THE UPPER RIDGE IMPACTED AREAS
MAINLY WITHIN 50 MILES OF THE WISCONSIN BORDER DURING THE NIGHT ON
8/26-8/27 AND THE MORNING OF 8/27 WITH MORE LOCALLY HEAVY RAIN.
IRONWOOD LED REPORTING STATIONS AGAIN WITH ANOTHER 2.10 INCHES OF
RAIN. SOME OF THE OTHER MORE IMPRESSIVE RAINFALL TOTALS INCLUDED
1.78 INCHES AT WATERSMEET IN GOGEBIC COUNTY...1.78 INCHES AT
MENOMINEE...1.17 INCHES AT STAMBAUGH...1.04 INCHES AT GLADSTONE IN
DELTA COUNTY AND 1.02 INCHES AT IRON MOUNTAIN. LESS THAN 0.10 INCH
WAS THE RULE OVER PORTIONS OF THE NORTHERN TIER FROM BARAGA TO
MARQUETTE AND NEWBERRY. WINDS IN ADVANCE OF ONE OF THE STRONGER
STORMS GUSTED AS HIGH AS 50 MPH AT IRON MOUNTAIN. SOME PATCHY DENSE
FOG FORMED MAINLY NEAR LAKE SUPERIOR AND UNDER THE HEAVIER RAIN
AREA. A WEAK HIGH PRESSURE SYSTEM FOLLOWING THE PRECIPITATION
COMPLEX BROUGHT A GRADUAL RETURN OF MORE SUNSHINE ON 8/27...HOLDING
THE MEAN DAILY TEMPERATURE AT 10 TO 15 DEGREES ABOVE AVERAGE.
WIDESPREAD FOG DEVELOPED DURING THE NIGHT ON 8/27-8/28 WITH THIS
WEAK HIGH AND LIGHT WINDS DOMINATING...AND THE FOG BECAME LOCALLY
DENSE. AFTER THE MORNING FOG BURNED OFF...LINGERING HIGH PRESSURE
BROUGHT A MOSTLY SUNNY DAY ON 8/28 WITH MEAN DAILY TEMPERATURES
RUNNING NEAR 10 DEGREES ABOVE NORMAL.

BANDS OF SHOWERS AND THUNDERSTORMS AHEAD OF ANOTHER DISTURBANCE
MOVING ALONG THE CANADIAN BORDER AND ITS ATTENDANT COLD FRONT
DEVELOPED OVER WESTERN UPPER MICHIGAN IN THE AFTERNOON ON 8/29...
THEN PUSHED EAST DURING THE NIGHT ON 8/29-8/30. LINGERING SHOWERS
OVER THE SOUTH CENTRAL AND EAST ENDED IN THE MORNING ON 8/30
FOLLOWING THE PASSAGE OF THE COLD FRONT. MOST PLACES PICKED UP AT
LEAST 0.25 TO 0.50 INCH OF RAIN DURING THIS EVENT...BUT HEAVIER
AMOUNTS IN EXCESS OF AN INCH WERE AGAIN THE RULE AT SOME PLACES.
MOHAWK HAD THE MOST WITH 1.46 INCHES FOLLOWED CLOSELY BE A LOCATION
NEAR NEWBERRY WITH 1.43 INCHES. BARAGA...AHMEEK IN KEWEENAW COUNTY
AND WAKEFIELD IN GOGEBIC COUNTY REPORTED 1.04 INCHES...1.03 INCHES
AND 1.01 INCHES RESPECTIVELY. A MEAN DAILY TEMPERATURE BETWEEN 10
AND 15 DEGREES ABOVE NORMAL ON 8/29 FELL TO AROUND 5 DEGREES ABOVE
AVERAGE ON 8/30 WITH THE ARRIVAL OF COOLER AIR BEHIND THE COLD
FRONTAL PASSAGE. MORE LOW CLOUDS AND LOCALLY DENSE FOG DEVELOPED
DURING THE NIGHT ON 8/30-8/31...BUT THIS GAVE WAY TO A MOSTLY SUNNY
AND WARMER AFTERNOON ON 8/31 WITH THE ARRIVAL OF ANOTHER WEAK HIGH
PRESSURE SYSTEM. THE THERMOMETER FINISHED THE MONTH BY AVERAGING
CLOSE TO 10 DEGREES ABOVE THE MEAN ON 8/31.

                         OCTOBER FORECAST

THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING A GREATER THAN
CLIMATOLOGICAL CHANCE OF AN ABOVE NORMAL MONTHLY MEAN TEMPERATURE BUT
EQUAL CHANCES OF ABOVE AND BELOW NORMAL MONTHLY PRECIPITATION OVER
ALL OF UPPER MICHIGAN IN OCTOBER 2013.

                       OCTOBER CLIMATOLOGY

AVERAGE TEMPERATURES IN OCTOBER CONTINUE THEIR DOWNWARD SPIRAL AS
THE SUN STAYS UP LESS AND LESS EACH DAY. THE OCTOBER MEAN
TEMPERATURE ACROSS UPPER MICHIGAN IS ABOUT TEN DEGREES LOWER THAN IN
SEPTEMBER AT MOST PLACES. POSSIBLE DAILY SUNSHINE DECREASES ABOUT 3
OR 4 MINUTES EVERY DAY DURING THE TENTH MONTH FROM 703 MINUTES ON
10/1 TO 607 MINUTES ON HALLOWEEN.

ALTHOUGH AVERAGE TEMPERATURES DECREASE DURING OCTOBER...RECORD HIGH
TEMPERATURES AT MANY PLACES IN UPPER MICHIGAN ARE STILL IN THE 80S
DURING THE FIRST WEEK OF THE MONTH. IN FACT...RESIDENTS OF IRON
MOUNTAIN BASKED IN A SUMMER-LIKE HIGH OF 88 ON 10/3/92. DOWNTOWN
MARQUETTE ENJOYED A TASTE OF SUMMER EVEN AS LATE AS 10/18 IN 1950...
WHEN THE MERCURY REACHED A BALMY 86 DEGREES.

BUT BY THE END OF OCTOBER...THE ICY HAND OF WINTER USUALLY BEGINS TO
GRIP UPPER MICHIGAN HARDER AND HARDER. RECORD LOW TEMPERATURES AT
MONTHS END FALL INTO THE TEENS EVERYWHERE AND EVEN AS LOW AS THE
SINGLE NUMBERS ABOVE ZERO AWAY FROM THE WARMING INFLUENCE OF LAKE
SUPERIOR. ON 10/30/1925...IRONWOOD RECORDED A LOW OF 2 DEGREES ABOVE
ZERO. OCTOBER 2002 WAS THE COLDEST OCTOBER ON RECORD AT THE
MARQUETTE NWS...AND AMONG THE TOP TEN COLDEST AT IRONWOOD AND IRON
MOUNTAIN. MONTHLY TEMPERATURES AVERAGED 4 TO 6 DEGREES BELOW NORMAL
ACROSS UPPER MICHIGAN. OCTOBER 2009 WAS ALSO QUITE CHILLY WITH AN
AVERAGE MONTHLY TEMPERATURE 3 TO 5 DEGREES BELOW THE MEAN. MUNISING
REPORTED THE COLDEST OCTOBER ON RECORD IN 2009...AND MANY PLACES
EXPERIENCED A TOP FIVE OR TEN COLDEST TENTH MONTH.

EVEN THOUGH AVERAGE PRECIPITATION IN OCTOBER IS LOWER THAN IN
SEPTEMBER AT MOST SPOTS...THE RESIDUAL WARMTH OF LAKE SUPERIOR
USUALLY CAUSES INCREASED LAKE EFFECT RAIN AND SNOW SHOWER ACTIVITY
DURING THE TENTH MONTH. MORE NUMEROUS ARCTIC AIR MASSES PLUNGING
SOUTH FROM CANADA ARE DESTABILIZED AS THEY CROSS THE RELATIVELY WARM
WATER...RESULTING IN THE INCREASED CONVECTIVE ACTIVITY. IF THE AIR
IS COLD ENOUGH...HEAVY SNOW CAN FALL...ESPECIALLY OVER HIGHER
TERRAIN JUST DOWNWIND OF LAKE SUPERIOR. BETWEEN 10/11 AND 10/14 IN
2006...AN UNUSUALLY EARLY WINTER STORM BLASTED THE HIGHER TERRAIN OF
THE WEST HALF OF UPPER MICHIGAN WITH 20 OR MORE INCHES OF SNOW...
INCLUDING AS MUCH AS 26.6 INCHES AT TWIN LAKES IN HOUGHTON COUNTY.
IN OCTOBER 1967...ALMOST 27 INCHES OF SNOW WHITENED IRONWOOD...
INCLUDING 15 INCHES ON 10/25/67. HEAVY SNOW CAN FALL EVEN EARLIER IN
THE MONTH. ON 10/6 TO 10/8 IN 2000...UP TO A FOOT OF SNOW SMOTHERED
THE HIGHER TERRAIN OF NORTH CENTRAL UPPER MICHIGAN. BUT DURING WARM
OCTOBERS...LITTLE OR NO SNOW CAN FALL AS WELL. THE MARQUETTE NWS SAW
NO SNOW AT ALL IN OCTOBER 1971...AS DID THE HOUGHTON COUNTY AIRPORT
IN 1986.

THE SAME SURFACE HEATING AND DESTABILIZATION OF COLD AIRMASSES THAT
CAUSES LAKE EFFECT SNOW ALSO RESULTS IN INCREASED WINDINESS OVER
LAKE SUPERIOR. THE GALES OF NOVEMBER OFTEN DO COME EARLY DURING
OCTOBER.

                  OUTLOOK FOR LATE FALL INTO WINTER

THE CLIMATE PREDICTION CENTER (CPC) IS FORECASTING EQUAL CHANCES OF
AN ABOVE AND BELOW NORMAL 3-MONTH MEAN TEMPERATURE AND 3-MONTH
PRECIPITATION OVER ALL OF UPPER MICHIGAN DURING NOVEMBER 2013
THROUGH JANUARY 2014.

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 1981 THROUGH 2010.
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





USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.