Damaging Winds in Wisconsin, September 7, 2005

Name: Damaging Winds in Wisconsin, September 7, 2005
Start: 2005-09-07T14:10
End: 2005-09-07T14:54
Location: Wisconsin

September 7, 2005 · NWS MKX · 3 events in 3 counties and zones

A very warm and humid airmass interacted with a stationary front draped across central Wisconsin to produce a few scattered severe storms during the afternoon over south central Wisconsin. Temperatures were in the upper 80s with dew points in the middle 60s.

Where it happened

Every event with a place to put it. Tap one for its entry below.

Tornadoes
Tropical storms and surge
Floods
Wind
Hail
Winter weather
Heat and drought
Cold
Fire, smoke and dust
Marine and coastal
Other

Open the live radar over this ground

The toll

Deaths: 0
Injuries: 0
Property damage: None recorded
Crop damage: None recorded
Events: 3

Deaths and injuries are direct and indirect together, as the offices filed them. Damage is property and crops in the dollars of the year, not adjusted for inflation, and only where an office estimated it.

What happened

The episode as NWS MKX wrote it up.

What forecasters said that day

The local office's own words before the first event, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Milwaukee, WI wrote its last area forecast discussion before the first event at Sep 7, 2:00 PM CST, 10 minutes earlier.

Area forecast discussion, Sep 7, 2:00 PM CST, 10 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
300 PM CDT WED SEP 7 2005

.DISCUSSION...FORECAST FOCUS ON PRECIPITATION CHANCES TONIGHT
THROUGH FRIDAY NIGHT.

SCATTERED CONVECTION THIS EVENING ASSOCIATED WITH LF QUAD H300 JET
INTERACTING WITH H850 BARO ZONE. SURFACE BOUNDARY VERY SHALLOW AND
NOT A FACTOR. RADAR AND SAT LOOPS INDICATE THAT MOST OF ACTIVITY
SHOULD BE EAST OF CWA BY AROUND MIDNIGHT...AS H850 BARO ZONE SINKS
SOUTHWARD AND H300 JET PROGRESSES EASTWARD. THIS CORRESPONDS WELL
WITH NAM AND GFS QPF PATTERN.

NEXT CHANCE PRECIPITATION WILL BE THURSDAY AFTERNOON. BOTH NAM AND
GFS INDICATE H700 TROUGH AND H500 SHORT WAVE ROTATING ACROSS CWA.
NAM IS STRONGER OF THE TWO MODELS. THERE IS ALSO OVERRUNNING H850
BARO ZONE LAYING JUST TO THE WEST OF CWA...WITH H850 MOISTURE
CONVERGENCE. CAPES OF AROUND 800 EXPECTED IN THE AFTERNOON WITH
LI/S OF AROUND -3...AND TT AND K INDICES OF 46 AND 29 RESPECTIVELY.
NOT REALLY UNSTABLE...BUT ENOUGH TO MENTION CHANCES IN FORECAST FOR
THURSDAY AFTERNOON. THURSDAY NIGHT...H850 BARO ZONE TIGHTENS UP AND
PROGRESSES INTO CWA WITH MOISTURE CONVERGENCE. BOTH MODELS INDICATE
SOME DEGREE OF H500 SUPPORT WITH WEAK VORT MAXES. NAM AND GFS BOTH
INDICATE SOME SMALL QPF AMOUNTS MAINLY DURING EVENING HOURS.

HAVE INTRODUCED CHANCES OF PRECIPITATION FRIDAY AFTERNOON WITH LLJ
INCREASING ACROSS H850 BARO ZONE. MODELS INDICATE SOME DEGREE OF
VORT MAX SUPPORT AND H700 OMEGA DURING AFTERNOON. THERE IS ALSO
STRONG H850 AND H700 MOISTURE CONVERGENCE. BUFFY IS UNSTABLE WITH
CAPES OF AROUND 850 AND LI/S OF -3. TT AND K INDICES OF 50 AND 36
RESPECTIVELY.

QUIET WEATHER EXPECTED FOR WEEKEND WITH STRONG DRYING AND
SUBSIDENCE IN MID LEVELS. HOWEVER...VERY WARM H850 TEMPERATURES
WILL RESULT IN DAYTIME HIGHS IN MID 80S.

&&

.MKX WATCHES/WARNINGS/ADVISORIES...NONE.

&&

Hazardous weather outlook, Sep 7, 1:51 PM CST, 19 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
251 PM CDT WED SEP 7 2005

WIZ046-047-051-052-056>060-062>072-080945-
MARQUETTE-GREEN LAKE-FOND DU LAC-SHEBOYGAN-SAUK-COLUMBIA-DODGE-
WASHINGTON-OZAUKEE-IOWA-DANE-JEFFERSON-WAUKESHA-MILWAUKEE-
LAFAYETTE-GREEN-ROCK-WALWORTH-RACINE-KENOSHA-
251 PM CDT WED SEP 7 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF SOUTH CENTRAL
WISCONSIN AND SOUTHEAST WISCONSIN.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THIS AFTERNOON AND
TONIGHT OVER SOUTH CENTRAL AND SOUTHEAST WISCONSIN...MAINLY ALONG
AND NORTH OF A MILWAUKEE...MADISON TO LONE ROCK LINE. THE PRIMARY
THREAT WILL BE LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A SLIGHT RISK OF SEVERE THUNDERSTORMS THURSDAY AFTERNOON
AND THURSDAY NIGHT. THE PRIMARY THREAT WOULD BE DAMAGING WINDS AND
LARGE HAIL.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED THIS AFTERNOON AND EVENING.

LMZ643>646-665-080945-
SHEBOYGAN TO PORT WASHINGTON-
PORT WASHINGTON TO NORTH POINT LIGHTHOUSE-
NORTH POINT LIGHTHOUSE TO WIND POINT-
WIND POINT TO WINTHROP HARBOR ILLINOIS-
WISCONSIN ADJACENT OPEN WATERS OF LAKE MICHIGAN TO MID LAKE-
251 PM CDT WED SEP 7 2005

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF LAKE MICHIGAN.

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS THIS AFTERNOON AN TONIGHT. A FEW
STORMS COULD PRODUCE WINDS TO NEAR 35 KNOTS.

DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A CHANCE OF THUNDERSTORMS THURSDAY NIGHT. SOME OF THE
STORMS COULD APPROACH SEVERE LIMITS.

REM

The radar

The Milwaukee radar (KMKX), 112 km away, was scanning. The volume nearest the first event began at 20:11 UTC.

Open the radar archive at this moment

Event by event

3 thunderstorm wind. Local standard time, as filed.

Thunderstorm Wind, Marquette

When: September 7, 2:10 PM CST
Where: Marquette County, 1 mi NE of Montello
Measured: 52 kt (60 mph) estimated gust
Reported by: LAW ENFORCEMENT
Coordinates: 43.817, -89.300

Thunderstorm Wind, Green Lake

When: September 7, 2:25 PM CST
Where: Green Lake County, 1 mi SW of Berlin
Measured: 52 kt (60 mph) estimated gust
Reported by: TRAINED SPOTTER
Coordinates: 43.967, -88.933

Thunderstorm Wind, Rock

When: September 7, 2:54 PM CST
Where: Rock County, Janesville
Measured: 52 kt (60 mph) estimated gust
Reported by: LAW ENFORCEMENT
Coordinates: 42.683, -89.017

What these are

Thunderstorm Wind: Winds from a thunderstorm of 50 knots (58 mph) or more, or lower winds that caused damage or casualties. Measured gusts are marked MG, estimated EG.

After NWS Directive 10-1605, the rules offices file Storm Data by.

The same day elsewhere

Every storm in Wisconsin in 2005 Every state in 2005 This day in weather history Warnings in Wisconsin, September 2005

Sources

NOAA National Centers for Environmental Information, Storm Events Database, compiled from the National Weather Service’s monthly Storm Data. Complete through 2026-06; NCEI adds each month about 75 days after it ends and revises past years a few times a year. Rebuilt 2026-09-24. Each event’s entry at NCEI: 5474512, 5474513, 5474514.