2007 WEATHER HIGHLIGHTS IN
SOUTH CENTRAL AND SOUTHEAST WISCONSIN


WINTER SEASON...DECEMBER 2006 THROUGH FEBRUARY 2007:

TEMPERATURES:

THE WINTER 2006 TO 2007 SEASON IN SOUTHERN WISCONSIN SAW FAIRLY MILD TEMPERATURES. AVERAGE TEMPERATURES ACROSS THE AREA DURING THIS PEROID GENERALLY RANGED FROM 21.0 TO 25.0 DEGREES. OFFICIALLY...MILWAUKEE HAD AN AVERAGE TEMPERATURE OF 25.7 DEGREES...WHICH WAS 1.6 DEGREES ABOVE NORMAL. MADISON HAD AN AVERAGE TEMPERATURE OF 22.8 DEGREES...WHICH WAS 1.8 DEGREES ABOVE NORMAL.

DECEMBER 2006 AND JANUARY 2007 WERE QUITE MILD ACROSS SOUTHERN WISCONSIN. AVERAGE TEMPERATURES GENERALLY RANGED FROM 26.0 TO 29.0 DEGREES DURING THIS PERIOD. FOR DECEMBER 2006...MILWAUKEE HAD AN AVERAGE TEMPERATURE OF 32.6 DEGREES...WHICH WAS 6.4 DEGREES ABOVE NORMAL. MADISON HAD AN AVERAGE TEMPERATURE OF 30.5 DEGREES...WHICH WAS 7.5 DEGREES ABOVE NORMAL. FOR JANUARY 2007...MILWAUKEE HAD AN AVERAGE TEMPERATURE OF 26.8 DEGREES...WHICH WAS 6.1 DEGREES ABOVE NORMAL. MADISON HAD AN AVERAGE TEMPERATURE OF 23.4 DEGREES...WHICH WAS 6.1 DEGREES ABOVE NORMAL. THE MILD STRETCH OF TEMPERATURES BEGAN IN THE MIDDLE OF DECEMBER 2006...AND LASTED THROUGH THE MIDDLE OF JANUARY 2007. MILWAUKEE STAYED MILD THROUGH MOST OF THE REST OF JANUARY 2007.

IN CONTRAST...FEBRUARY 2007 WAS A VERY COLD MONTH ACROSS SOUTHERN WISCONSIN. AVERAGE TEMPERATURES GENERALLY RANGED FROM 12.0 TO 16.0 DEGREES. OFFICIALLY...MILWAUKEE HAD AN AVERAGE TEMPERATURE OF 17.7 DEGREES...WHICH WAS 7.7 DEGREES BELOW NORMAL. MADISON OBSERVED AN AVERAGE TEMPERATURE OF 14.4 DEGREES...WHICH WAS 8.2 DEGREES BELOW NORMAL. AN ARCTIC AIRMASS PREVAILED OVER THE AREA FOR MOST OF THE FIRST HALF OF FEBRUARY...WITH SOME DAYS RECORDING BELOW ZERO LOWS. MILDER AIR RETURNED FOR THE SECOND HALF OF THE MONTH.

THE WARMEST TEMPERATURE RECORDED FOR THIS THREE MONTH PERIOD WAS 55.0 DEGREES AT BARABOO AND ARGYLE ON DECEMBER 15 2006. THE LOWEST TEMPERATURE RECORDED WAS -27.0 DEGREES AT LONE ROCK ON FEBRUARY 5 2007.

WEATHER:

THE 2006 TO 2007 WINTER SEASON IN SOUTHERN WISCONSIN SAW LIQUID PRECIPITATION TOTALS SLIGHTLY BELOW NORMAL. THE SEASONAL AVERAGE TOTAL PRECIPITATION ACROSS THE AREA WAS AROUND 4.48 INCHES...AND GENERALLY RANGED FROM 2.50 TO 6.25 INCHES. OFFICIALLY...MILWAUKEE OBSERVED 5.13 INCHES...WHICH WAS 0.59 INCHES BELOW NORMAL. MADISON OBSERVED 3.79 INCHES...WHICH WAS 0.40 INCHES BELOW NORMAL. RICHFIELD IN WASHINGTON COUNTY RECORDED 3.24 INCHES OF LIQUID PRECIPITATION IN DECEMBER 2006...THE GREATEST MONTHLY AMOUNT RECORDED AT A SINGLE LOCATION.

THE SEASONAL SNOWFALL TOTALS FOR THE 2006 TO 2007 WINTER SEASON ACROSS SOUTHERN WISCONSIN WERE NEAR TO ABOVE NORMAL. THE SEASONAL AVERAGE TOTAL SNOWFALL ACROSS THE AREA WAS AROUND 35.8 INCHES...AND GENERALLY RANGED FROM 26.0 TO 47.0 INCHES. OFFICIALLY...MILWAUKEE OBSERVED 46.6 INCHES...WHICH WAS 8.4 INCHES ABOVE NORMAL. MADISON OBSERVED 40.8 INCHES...WHICH WAS 6.7 INCHES ABOVE NORMAL. JACKSON REPORTED 26.5 INCHES OF SNOWFALL IN FEBRUARY 2007...THE GREATEST MONTHLY AMOUNT RECORDED AT A SINGLE LOCATION.

THE 23.7 INCHES OF SNOWFALL IN FEBRUARY 2007 AT MILWAUKEE WAS THE TENTH SNOWIEST FEBRUARY ON RECORD. THE 22.3 INCHES OF SNOWFALL IN FEBRUARY 2007 AT MADISON WAS THE THIRD SNOWIEST FEBRUARY ON RECORD.

THIS PERIOD WAS HIGHLIGHTED BY TWO WINTER STORMS...WHICH AFFECTED SOUTHERN WISCONSIN FROM FEBRUARY 23 TO 25. THE FIRST STORM ON FEBRUARY 23 AND 24 BROUGHT BETWEEN 8.0 AND 16.0 INCHES OF SNOWFALL. THE SECOND STORM ON FEBRUARY 24 AND 25 BROUGHT AN ADDITIONAL 8.0 TO 13.0 INCHES. TOTAL SNOW ACCUMULATIONS FOR THE TWO STORMS WERE GENERALLY BETWEEN 16.0 AND 29.0 INCHES.

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SPRING SEASON...MARCH THROUGH MAY 2007:

TEMPERATURES:

ABOVE AVERAGE TEMPERATURES WERE OBSERVED DURING THE SPRING SEASON OF 2007 IN SOUTHERN WISCONSIN. OFFICIALLY IN MILWAUKEE...THE AVERAGE TEMPERATURE WAS 47.7 DEGREES...WHICH WAS 2.3 DEGREES ABOVE NORMAL. IN MADISON...THE AVERAGE TEMPERATURE WAS SLIGHTLY WARMER...AT 48.5 DEGREES...WHICH WAS 2.7 DEGREES ABOVE NORMAL.

A SURVEY OF COOPERATIVE OBSERVER SITES ACROSS SOUTHERN WISCONSIN SHOWED AVERAGE TEMPERATURES FOR THE MONTH OF MARCH 2007 RANGING FROM 35.0 TO 40.0 DEGREES. IN APRIL 2007...THESE READINGS INCREASED TO A RANGE OF 43.0 TO 46.0 DEGREES. FINALLY...AVERAGE TEMPERATURES IN MAY 2007 WERE GENERALLY BETWEEN 58.0 AND 62.0 DEGREES. AFTER A COLD START TO MARCH 2007...TEMPERATURES REBOUNDED AND WERE MILD FOR THE REST OF THE MONTH...AND THROUGH APRIL AND MAY 2007.

THE WARMEST TEMPERATURE RECORDED IN MILWAUKEE DURING THE SPRING SEASON WAS 89.0 DEGREES ON MAY 14 2007...AND THE COLDEST WAS 9.0 DEGREES ON MARCH 6 2007. IN MADISON...THE WARMEST AND COLDEST TEMPERATURES WERE 87.0 DEGREES ON MAY 29 2007...AND 4.0 DEGREES ON MARCH 8 2007...RESPECTIVELY.

THE WARMEST TEMPERATURE RECORDED IN THE AREA WAS 91.0 DEGREES 4 MILES WEST OF GENOA CITY IN WALWORTH COUNTY ON MAY 14 2007. THE COLDEST TEMPERATURE RECORDED IN THE AREA WAS -3.0 DEGREES IN MARKESAN IN GREEN LAKE COUNTY ON MARCH 6 2007.

WEATHER:

THE SPRING 2007 SEASON IN SOUTHERN WISCONSIN SAW LIQUID PRECIPITATION TOTALS VARY. THE SEASONAL AVERAGE TOTAL PRECIPITATION WAS AROUND 8.51 INCHES ACROSS THE AREA...AND GENERALLY RANGED FROM 6.00 INCHES TO 11.25 INCHES. OFFICIALLY...MILWAUKEE OBSERVED 9.23 INCHES...WHICH WAS 0.20 INCHES BELOW NORMAL. MADISON OBSERVED 9.47 INCHES...WHICH WAS 0.59 INCHES ABOVE NORMAL. ARGYLE RECORDED 6.93 INCHES OF LIQUID PRECIPITATION IN APRIL 2007...THE GREATEST MONTHLY RAINFALL RECORDED AT A SINGLE LOCATION.

THE SEASONAL SNOWFALL TOTALS FOR SPRING 2007 ACROSS SOUTHERN WISCONSIN WERE NEAR NORMAL. THE SEASONAL AVERAGE TOTAL SNOWFALL WAS AROUND 8.8 INCHES ACROSS THE AREA...AND GENERALLY RANGED FROM 5.0 TO 13.5 INCHES. OFFICIALLY...MILWAUKEE OBSERVED 11.4 INCHES...WHICH WAS 1.3 INCHES ABOVE NORMAL. MADISON OBSERVED 9.3 INCHES...WHICH WAS 1.4 INCHES BELOW NORMAL. WESTFORD RECORDED 9.1 INCHES OF SNOWFALL IN MARCH...THE GREATEST MONTHLY SNOWFALL RECORDED AT A SINGLE LOCATION.

ON MARCH 1 AND 2...A SNOWSTORM AFFECTED THE NORTHERN PORTIONS OF SOUTHERN WISCONSIN. SNOWFALL AMOUNTS OF 6.0 INCHES OR MORE WERE OBSERVED MAINLY NORTH OF A WISCONSIN DELLS TO SHEBOYGAN LINE...WITH LOWER AMOUNTS TO THE SOUTH.

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SUMMER SEASON...JUNE THROUGH AUGUST 2006:

TEMPERATURES:

TEMPERATURES AVERAGED SLIGHTLY ABOVE NORMAL DURING THE SUMMER SEASON. OFFICIALLY...MILWAUKEE HAD AN AVERAGE TEMPERATURE OF 70.6 DEGREES...WHICH WAS 1.0 DEGREES ABOVE NORMAL. MADISON HAD AN AVERAGE TEMPERATURE OF 70.8 DEGREES...WHICH WAS 1.6 DEGREES ABOVE NORMAL.

JUNE AND AUGUST BROUGHT ABOVE NORMAL TEMPERATURES...AVERAGING 1.5 TO 2.5 DEGREES ABOVE NORMAL. HOWEVER...JULY BROUGHT NEAR NORMAL TEMPERATURES...WITH DEPARTURES IN MILWAUKEE AND MADISON OF -0.4 DEGREES AND 0.3 DEGREES...RESPECTIVELY.

DESPITE A PROLONGED HEAT WAVE OVER THE OHIO VALLEY DURING THE MONTH OF AUGUST...MILWAUKEE ONLY REACHED 90.0 DEGREES OR WARMER ON SIX DAYS IN 2007...WHICH WAS THREE DAYS BELOW NORMAL. FIVE OUT OF THE SIX DAYS WERE DURING THE SUMMER SEASON. MADISON WAS ALSO BELOW NORMAL WITH THE NUMBER OF DAYS AT OR ABOVE 90.0 DEGREES...WITH EIGHT DAYS. THIS WAS FOUR DAYS BELOW NORMAL. THE HIGHEST TEMPERATURE IN MILWAUKEE WAS 94.0 DEGREES ON JULY 8 2007...AND THE LOWEST TEMPERATURE WAS 46.0 DEGREES ON JUNE 6 2007. THE HIGHEST TEMPERATURE IN MADISON WAS 92.0 DEGREES ON JULY 31 2007...AND THE LOWEST TEMPERATURE WAS 47.0 DEGREES ON JUNE 9 AND 29 2007.

THE WARMEST TEMPERATURE RECORDED IN THE AREA WAS 98.0 DEGREES AT RICHFIELD IN WASHINGTON COUNTY ON JULY 8 2007. THE COLDEST TEMPERATURE RECORDED WAS 42.0 DEGREES AT DELAVAN ON JUNE 9 2007...AND THE KENOSHA AIRPORT ON JUNE 6 AND 30 2007.

WEATHER:

THE FIRST TWO MONTHS OF THE SUMMER SEASON...JUNE 2007 AND JULY 2007...AVERAGED NEAR OR SLIGHTLY BELOW NORMAL FOR PRECIPITATION AT BOTH MILWAUKEE AND MADISON. THE TWO MONTH TOTAL AT MILWAUKEE WAS 5.04 INCHES...WHICH WAS 2.10 INCHES BELOW NORMAL. THE TWO MONTH TOTAL FOR MADISON WAS 7.51 INCHES...WHICH WAS 0.47 INCHES BELOW NORMAL.

SCATTERED SEVERE THUNDERSTORMS OCCURRED EVERY DAY DURING THE FIRST SIX DAYS OF JUNE 2007...THANKS TO A SLOW MOVING UPPER LEVEL LOW PRESSURE SYSTEM. LINES OF STORMS PRODUCED DAMAGING WINDS...LARGE HAIL...ISOLATED FLASH FLOODING...AND FOUR WEAK TORNADOES. TWO EF0 TORNADOES SPUN UP IN LAFAYETTE COUNTY ON JUNE 1 AND 2 2007. ONE EF0 TORNADO SPUN UP IN WASHINGTON COUNTY ON JUNE 2 2007...AND AN EF1 TORNADO SPUN UP ON JUNE 3 2007. FIFTEEN THOUSAND DOLLARS IN COMBINED DAMAGE RESULTED FROM THESE TORNADOES. AFTER THE BEGINNING OF JUNE 2007...SEVERE WEATHER FOR SOUTHERN WISCONSIN WANED THROUGH LATE JULY 2007. THE LACK OF RAINFALL ACROSS NORTHERN PORTIONS OF THE AREA LED TO NEAR DROUGHT CONDITIONS DURING JUNE INTO JULY 2007.

AS JULY 2007 TURNED INTO AUGUST 2007...THE NEAR TO BELOW NORMAL PRECIPITATION TOTALS TURNED INTO RECORD BREAKING PRECIPITATION TOTALS OVER MUCH OF SOUTHERN WISCONSIN. A PROLONGED HEAT WAVE OVER THE OHIO VALLEY DURING THE MONTH OF AUGUST 2007 SET THE STAGE FOR NUMEROUS DISTURBANCES TO RIDE THROUGH THE UPPER MISSISSIPPI RIVER VALLEY. THIS BROUGHT ROUND AFTER ROUND OF HEAVY RAIN AND THUNDERSTORMS.

IN THE MONTH OF AUGUST 2007 ALONE...MADISON OFFICIALLY RECORDED 15.18 INCHES OF RAINFALL...WHICH WAS 10.85 INCHES ABOVE NORMAL. IT SET THE RECORD FOR THE WETTEST AUGUST EVER...AND THE WETTEST MONTH EVER AT MADISON. MILWAUKEE ALSO HAD WELL ABOVE AVERAGE PRECIPITATION...WITH 7.92 INCHES. THIS WAS 3.89 INCHES ABOVE NORMAL. SEVERAL COOPERATIVE NETWORK STATIONS WELL SOUTH AND WELL WEST OF MADISON RECORDED OVER 20.00 INCHES OF RAIN FOR THE MONTH OF AUGUST 2007...MORE THAN HALF OF THE ANNUAL AVERAGE. A HANDFUL OF THESE SITES ALSO SET RECORDS FOR THE WETTEST MONTH AND/OR AUGUST EVER.

THIS HEAVY RAINFALL LEAD TO MODERATE TO MAJOR FLASH FLOODING ON SOME DAYS FROM THE LA CROSSE AREA...THROUGH MADISON...TO RACINE AND KENOSHA. TOTAL DAMAGE TO PROPERTY AND CROPS WAS AT LEAST 112.4 MILLION DOLLARS...WITH MOST OF IT IN WEST CENTRAL AND SOUTHWEST WISCONSIN. THERE WERE REPORTS OF MUD AND DEBRIS SLIDES...ROAD CLOSURES...FLOODED HOMES AND BUSINESSES...AS WELL AS SOME UNDERMINED BRIDGES. ULTIMATELY...14 COUNTIES IN WISCONSIN RECEIVED A FEDERAL DISASTER DECLARATION FOR THE FLOODING THAT OCCURRED FROM AUGUST 18 TO AUGUST 31 2007. THIS INCLUDED THE COUNTIES OF COLUMBIA...DANE...GREEN...IOWA... JEFFERSON...KENOSHA...RACINE...ROCK...AND SAUK COUNTIES IN SOUTH CENTRAL AND SOUTHEAST WISCONSIN.

THE HEAVY RAINFALL PERIOD STARTED OVERNIGHT ON AUGUST 4 2007 TO EARLY ON AUGUST 5 2007...WHEN 6.00 TO 10.00 INCHES OF RAIN FELL FROM EASTERN IOWA COUNTY...TO SOUTHWEST DANE COUNTY. 1.00 TO 5.00 INCHES OF RAIN FELL OVER THE REMAINDER OF SOUTHERN WISCONSIN. AT A LOCATION TWO MILES WEST OF BARNEVELD...AT LEAST 10.00 INCHES FELL UNOFFICIALLY. A COUPLE MUDSLIDES WERE REPORTED ON COUNTY HIGHWAY K NEAR BARNEVELD...AND SOME TREES WERE UPROOTED.

ANOTHER ROUND OF 2.00 TO 5.00 INCHES OF RAIN FELL FROM LATE ON AUGUST 5 2007 TO EARLY ON AUGUST 6 2007 ACROSS SOUTHERN WISCONSIN. THIS LEAD TO ADDITIONAL MINOR FLOODING...ESPECIALLY IN THE COUNTIES NEAR THE WISCONSIN AND ILLINOIS BORDER. AN ADDITIONAL ROUND OF THUNDERSTORMS WITH HEAVY RAINFALL OCCURRED FROM AUGUST 20 2007 THROUGH AUGUST 23 2007 ACROSS SOUTHERN WISCONSIN. MOST RIVERS AND STREAMS EXCEEDED FLOOD STAGE DURING AUGUST 2007. THE ROOT RIVER CANAL AT RAYMOND REACHED AN ALL TIME RECORD HIGH CREST OF 11.66 FEET ON AUGUST 21 2007.

OFFICIALLY FOR THE SUMMER SEASON...MADISON RECORDED 22.69 INCHES OF RAINFALL...WHICH WAS 10.38 INCHES ABOVE NORMAL. THIS WAS A RECORD VALUE FOR THE JUNE THROUGH AUGUST PERIOD. THE PREVIOUS RECORD WAS 21.58 INCHES...SET BACK IN 1993. MILWAUKEE RECORDED 12.96 INCHES OF RAINFALL...WHICH WAS 1.79 INCHES ABOVE NORMAL. THIS WAS WELL BELOW THE RECORD VALUE OF 25.20 INCHES...SET IN 1985.


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AUTUMN SEASON...SEPTEMBER THROUGH NOVEMBER 2007:

TEMPERATURES:

TEMPERATURES WERE ABOVE NORMAL ACROSS SOUTHERN WISCONSIN DURING THE AUTUMN 2007 SEASON. THE AVERAGE TEMPERATURES ACROSS SOUTHERN WISCONSIN WERE GENERALLY AROUND 52.2 DEGREES. OFFICIALLY...MILWAUKEE RECORDED AN AVERAGE TEMPERATURE OF 53.8 DEGREES...WHICH WAS 2.9 DEGREES ABOVE NORMAL. IN MADISON...THE AVERAGE TEMPERATURE WAS 51.9 DEGREES...WHICH WAS 3.4 DEGREES ABOVE NORMAL.

SEPTEMBER BROUGHT ABOVE NORMAL TEMPERATURES OVERALL ACROSS SOUTHERN WISCONSIN. MILWAUKEE HAD AN AVERAGE TEMPERATURE OF 65.3 DEGREES...WHICH WAS 2.3 DEGREES ABOVE NORMAL. IN MADISON...IT WAS 63.9 DEGREES...WHICH WAS 3.2 DEGREES ABOVE NORMAL.

OCTOBER WAS A VERY WARM MONTH...WITH TEMPERATURES WELL ABOVE NORMAL. THE AVERAGE TEMPERATURE AT MILWAUKEE WAS 58.1 DEGREES...WHICH WAS 6.7 DEGREES ABOVE NORMAL...AND THE FOURTH WARMEST OCTOBER ON RECORD. IN MADISON...IT WAS 56.4 DEGREES...WHICH WAS 7.1 DEGREES ABOVE NORMAL. THIS TIED FOR THE SEVENTH WARMEST OCTOBER ON RECORD.

NOVEMBER BROUGHT A COOLDOWN FROM THE WARM OCTOBER...WITH OVERALL TEMPERATURES SLIGHTLY BELOW NORMAL ACROSS SOUTHERN WISCONSIN. MILWAUKEE HAD AN AVERAGE TEMPERATURE OF 38.0 DEGREES...WHICH WAS 0.4 DEGREES BELOW NORMAL. IN MADISON...IT WAS 35.4 DEGREES...WHICH WAS 0.1 DEGREES BELOW NORMAL.

THE WARMEST TEMPERATURE RECORDED WAS 95.0 DEGREES 3 MILES NORTHWEST OF WAYNE IN WASHINGTON COUNTY ON SEPTEMBER 5 2007. THE COLDEST TEMPERATURE RECORDED WAS 9.0 DEGREES ABOVE ZERO NEAR POYNETTE IN COLUMBIA COUNTY ON NOVEMBER 29 2007.

THE FIRST FREEZE OCCURRED ON NOVEMBER 2 AT MILWAUKEE...WHICH WAS 16 DAYS LATER THAN NORMAL. THE FIRST FREEZE OCCURRED ON OCTOBER 25 AT MADISON...WHICH WAS 14 DAYS LATER THAN NORMAL.

WEATHER:

RAINFALL AND LIQUID EQUIVALENT PRECIPITATION WAS BELOW NORMAL ACROSS SOUTHERN WISCONSIN DURING THE AUTUMN SEASON. GENERALLY...ABOUT 3.20 TO 6.00 INCHES OF RAINFALL AND LIQUID EQUIVALENT PRECIPITATION AMOUNTS OCCURRED. COLUMBIA COUNTY SAW THE MOST PRECIPITATION...WITH AMOUNTS AROUND 7.70 INCHES. OFFICIALLY...MILWAUKEE RECEIVED 5.25 INCHES...WHICH WAS 3.24 INCHES BELOW NORMAL. MADISON RECEIVED 6.19 INCHES OF RAINFALL...WHICH WAS 1.38 INCHES BELOW NORMAL. 5.76 INCHES OF RAINFALL WAS RECORDED 4 MILES NORTH OF DODGEVILLE IN OCTOBER 2007...THE HIGHEST MONTHLY AMOUNT AT A SINGLE LOCATION FOR THE THREE MONTH PERIOD.

SEPTEMBER SAW GENERALLY BETWEEN 1.50 AND 3.00 INCHES OF RAINFALL...WITH THE HIGHEST AMOUNTS OF 2.50 TO 3.50 INCHES ACROSS SAUK AND COLUMBIA COUNTIES. OFFICIALLY...MILWAUKEE RECORDED 1.93 INCHES OF RAINFALL...WHICH WAS 1.37 INCHES BELOW NORMAL. MADISON RECORDED 2.45 INCHES OF RAINFALL...WHICH WAS 0.63 INCHES BELOW NORMAL.

OCTOBER BROUGHT SLIGHTLY ABOVE NORMAL PRECIPITATION...WITH 2.00 TO 4.50 INCHES OF RAINFALL. SAUK AND IOWA COUNTIES RECEVIED THE HIGHEST AMOUNTS...IN THE 4.00 TO 5.50 INCH RANGE. OFFICIALLY...MILWAUKEE RECORDED 2.96 INCHES OF RAINFALL...WHICH WAS 0.47 INCHES ABOVE NORMAL. MADISON RECORDED 3.35 INCHES OF RAINFALL...WHICH WAS 1.17 INCHES ABOVE NORMAL.

NOVEMBER WAS A VERY DRY MONTH...WITH WELL BELOW NORMAL PRECIPITATION. GENERALLY...ONLY 0.25 TO 0.50 INCHES OF PRECIPITATION WAS OBSERVED ACROSS SOUTHERN WISCONSIN. OFFICIALLY...MILWAUKEE RECORDED 0.36 INCHES OF RAINFALL AND LIQUID EQUIVALENT PRECIPITATION...WHICH WAS 2.34 INCHES BELOW NORMAL. MADISON RECORDED 0.39 INCHES OF RAINFALL AND LIQUID EQUIVALENT PRECIPITATION...WHICH WAS 1.92 INCHES BELOW NORMAL.

SNOWFALL FOR THE AUTUMN SEASON VARIED ACROSS SOUTHERN WISCONSIN. SNOW AMOUNTS IN THE 1.0 TO 3.5 INCH RANGE WERE FOUND ACROSS MOST OF THE AREA...WITH AN INCH OR LESS IN EXTREME SOUTHERN WISCONSIN. THE HIGHEST AMOUNTS WERE LOCATED TO THE NORTH OF MADISON AND MILWAUKEE. OFFICIALLY...MILWAUKEE RECEIVED 1.5 INCHES OF SNOWFALL...WHICH WAS 2.8 INCHES BELOW NORMAL. MADISON RECEIVED 1.5 INCHES...WHICH WAS 3.6 INCHES BELOW NORMAL. THE HIGHEST AMOUNT WAS 3.5 INCHES AT TAYCHEEDAH IN FOND DU LAC COUNTY IN NOVEMBER 2007.

SEVERE THUNDERSTORMS ACROSS SAUK COUNTY PRODUCED DAMAGING WIND GUSTS TO 60 MPH ON THE EVENING OF SEPTEMBER 18...CAUSING SEVERAL REPORTS OF DOWNED POWERLINES.

AN EF0 TORNADO SPAWNED BY A SEVERE THUNDERSTORM ON SEPTEMBER 27 TOUCHED DOWN 3.5 MILES EAST OF NORTH CAPE IN RACINE COUNTY IN THE MIDDLE AFTERNOON HOURS. THIS WAS A VERY BRIEF TOUCHDOWN...WITH A PATH OF ONLY 1/10 OF A MILE. THE TORNADO CAUSED A COUPLE OF ROTTED TREES TO FALL DOWN...ROOF SHINGLE DAMAGE ON ONE HOUSE...AND SOME FENCING DAMAGE. ALONG WITH THIS TORNADO...SEVERE THUNDERSTORMS IN THE AREA ON THAT AFTERNOON ALSO PRODUCED SEVERAL REPORTS OF 0.75 INCH DIAMETER HAIL IN PORTIONS OF WAUKESHA...RACINE...MILWAUKEE...AND OZAUKEE COUNTIES.

A MARGINALLY SEVERE THUNDERSTORM ON OCTOBER 2 CAUSED DAMAGE TO A FEW TREES AND A POWER POLE IN COLUMBIA COUNTY. ON OCTOBER 18...1.00 INCH HAIL WAS REPORTED IN DODGE COUNTY...AND 0.75 INCH DIAMETER HAIL WAS REPORTED IN FOND DU LAC COUNTY.

THE FIRST MEASURABLE SNOWFALL AT MILWAUKEE OCCURRED ON NOVEMBER 21...WITH 1.2 INCHES. MADISON RECEIVED 1.3 INCHES OF SNOWFALL ON THAT DAY. SNOW AMOUNTS OF 1.0 TO 2.0 INCHES WERE COMMON ACROSS SOUTHERN WISCONSIN.

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DECEMBER 2007:

TEMPERATURES:

OVERALL...DECEMBER WAS NEAR OR SLIGHTLY BELOW NORMAL ACROSS SOUTH CENTRAL AND SOUTHEAST WISCONSIN. OVERALL...THE MONTHLY AVERAGE TEMPERATURE WAS ABOUT 21.9 DEGREES...WITH AVERAGE TEMPERATURES RANGING FROM ABOUT 19.0 TO 24.5 DEGREES ACROSS THE AREA. OFFICIALLY...THE AVERAGE TEMPERATURE AT MILWAUKEE WAS 26.3 DEGREES...WHICH WAS 0.1 DEGREES ABOVE NORMAL. IN MADISON...IT WAS 21.2 DEGREES...WHICH WAS 1.8 DEGREES BELOW NORMAL.

THE HIGHEST TEMPERATURE IN DECEMBER 2007 WAS 49.0 DEGREES AT THE KENOSHA AIRPORT ON DECEMBER 23. THE LOWEST TEMPERATURE WAS -18.0 DEGREES 2 MILES EAST OF HOLY HILL IN WASHINGTON COUNTY ON DECEMBER 6.

WEATHER:

DECEMBER 2007 WAS A WET MONTH. THE AVERAGE RAINFALL AND LIQUID EQUIVALENT TOTAL FOR DECEMBER 2007 WAS ABOUT 3.46 INCHES...AND GENERALLY RANGED FROM 2.00 TO 4.50 INCHES. OFFICIALLY...MILWAUKEE HAD 3.49 INCHES...WHICH WAS 1.27 INCHES ABOVE NORMAL. THIS MADE DECEMBER 2007 THE NINTH WETTEST DECEMBER ON RECORD AT MILWAUKEE. MADISON HAD 3.63 INCHES...WHICH WAS 1.97 INCHES ABOVE NORMAL. THIS MADE DECEMBER 2007 THE SIXTH WETTEST DECEMBER ON RECORD AT MADISON.

THE HIGHEST RAINFALL AND LIQUID EQUIVALENT TOTAL WAS 5.04 INCHES AT ARGYLE. THE LOWEST WAS 1.24 INCHES NEAR WAYNE IN WASHINGTON COUNTY.

SNOWFALL AMOUNTS WERE QUITE HIGH ACROSS THE AREA IN DECEMBER 2007. THE AVERAGE SNOWFALL TOTAL ACROSS THE AREA WAS AROUND 26.5 INCHES...AND GENERALLY RANGED FROM 20.0 TO 32.5 INCHES. OFFICIALLY...MILWAUKEE RECEIVED 29.5 INCHES OF SNOWFALL...WHICH WAS 17.8 INCHES ABOVE NORMAL. THIS MADE DECEMBER 2007 THE SECOND SNOWIEST DECEMBER ON RECORD AT MILWAUKEE. MADISON RECEIVED 33.5 INCHES OF SNOWFALL...WHICH WAS 20.9 INCHES ABOVE NORMAL. THIS MADE DECEMBER 2007 THE SECOND SNOWIEST DECEMBER ON RECORD AT MADISON.

THE HIGHEST SNOWFALL TOTAL WAS 36.5 INCHES AT MOUNT HOREB. THE LOWEST TOTAL WAS 10.5 INCHES AT WAYNE IN WASHINGTON COUNTY.

THE MONTH GOT OFF TO A WET AND SNOWY START ON DECEMBER 1...WITH A SNOW AND ICE STORM ACROSS SOUTHERN WISCONSIN. THE STORM BROUGHT 3.0 TO 6.0 INCHES OF SNOWFALL INITIALLY...BEFORE CHANGING TO SLEET AND FREEZING RAIN. SLEET ACCUMULATIONS OF 1.0 TO 2.0 INCHES WERE REPORTED ACROSS SOUTHERN WISCONSIN...ALONG WITH ICE ACCUMULATIONS OF 0.25 TO 0.50 INCH. HUNDREDS OF VEHICLE ACCIDENTS OCCURRED...AND NUMEROUS AIRLINE FLIGHTS AND CIVIC FUNCTIONS WERE CANCELLED.

SEVERAL SYSTEMS MOVED THROUGH THE REGION DURING THE REST OF THE MONTH...WHICH BROUGHT SEVERAL ROUNDS OF LIGHT TO MODERATE SNOWFALL.

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THE SULLIVAN NWS COVERAGE AREA INCLUDES THE FOLLOWING 20 COUNTIES:

COLUMBIA JEFFERSON ROCK
DANE KENOSHA SAUK
DODGE LAFAYETTE SHEBOYGAN
FOND DU LAC MARQUETTE WALWORTH
GREEN MILWAUKEE WASHINGTON
GREEN LAKE OZAUKEE WAUKESHA
IOWA RACINE

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HERE ARE SOME PRELIMINARY STATISTICS COVERING THESE 20 COUNTIES:

HIGHEST TEMPERATURE..... 98.0 DEGREES AT RICHFIELD IN WASHINGTON COUNTY ON JULY 8 2007.

LOWEST TEMPERATURE...... -27.0 DEGREES AT THE LONE ROCK AIRPORT ON FEBRUARY 5 2007.

MOST RAIN IN 24 HOURS... 6.20 INCHES AT LODI IN COLUMBIA COUNTY FROM AUGUST 18 TO 19 2007.

MOST SNOW IN 24 HOURS... 17.0 INCHES AT THE KENOSHA COAST GUARD ON DECEMBER 1 2006.

MOST RAIN IN 1 MONTH.... 19.51 INCHES AT ALBANY IN GREEN COUNTY FOR AUGUST 2007.

MOST SNOW IN 1 MONTH.... 36.5 INCHES AT MOUNT HOREB FOR DECEMBER 2007.

REPORTED TORNADOES:

TOTAL = 5

BY EF-SCALE INTENSITY:

EF0 = 4
EF1 = 1
EF2 = 0
EF3 = 0
EF4 = 0
EF5 = 0

BY COUNTY:

COLUMBIA = 0
DANE = 0
DODGE = 0
FOND DU LAC = 0
GREEN = 0
GREEN LAKE = 0
IOWA = 0
JEFFERSON = 0
KENOSHA = 0
LAFAYETTE = 2
MARQUETTE = 0
MILWAUKEE = 0
OZAUKEE = 0
RACINE = 1
ROCK = 0
SAUK = 0
SHEBOYGAN = 0
WALWORTH = 0
WASHINGTON = 2
WAUKESHA = 0

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NOTE...THE PRELIMINARY DATA LISTED IN THIS PRODUCT WERE TAKEN FROM
THE FOLLOWING SOURCES:

1. THE OFFICIAL OBSERVATIONAL DATA FROM GENERAL MITCHELL
INTERNATIONAL AIRPORT IN MILWAUKEE...AND DANE COUNTY REGIONAL
AIRPORT IN MADISON.

2. THE NATIONAL WEATHER SERVICE COOPERATIVE OBSERVER NETWORK IN
SOUTH CENTRAL AND SOUTHEAST WISCONSIN.

3. PRELIMINARY STORM DATA INFORMATION...FOR SEVERE WEATHER
STATISTICS.

FOR THE COOPERATIVE OBSERVER NETWORK...DATA WAS USED IF THE STATION
HAD REPORTED DAILY OBSERVATIONS AT LEAST 90 PERCENT OF THE TIME FOR A
GIVEN MONTH.


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