Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 89, NWS Green Bay, WI

September 6, 2010Wood County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Sep 6, 2010, 6:39 AM CDT for Wood County, Wisconsin. It was in force for 51 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued
Sep 6, 2010, 6:39 AM CDT (11:39 UTC)
Expired
Sep 6, 2010, 7:30 AM CDT
In force
51 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Wood County, WI

The radar

The La Crosse radar (KARX), 116 km from the middle of the area, began a volume at 11:42 UTC, the scan nearest the moment this went out.

Open the radar archive at this moment

The archived warnings, watches and discussions in force at that minute are drawn over the scan, this one among them.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 11.7 hours before the alert went out and 154 km from the middle of its area. This is the routine balloon launch nearest before it, the air the forecaster had in hand, not a measurement taken for the alert.

Skew-T log-pSkew-T log-p diagram, Green Bay/Straub, WI at 00:00Z on 2010-09-06Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 0 joules per kilogram.LCL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Green Bay/Straub, WI at 00:00Z on 2010-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 93 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
0 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1400 m above ground
0-6 km bulk shear
39 kt
0-1 km storm-relative helicity
93 m²/s²
0-3 km storm-relative helicity
261 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS Green Bay, WI wrote its last area forecast discussion before this severe thunderstorm warning went out at Sep 6, 4:45 AM CDT, 1 hour 54 minutes earlier.

Area forecast discussion, Sep 6, 4:45 AM CDT, 1 hour 54 minutes before
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Hazardous weather outlook, Sep 6, 5:40 AM CDT, 59 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
540 AM CDT MON SEP 6 2010

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-071045-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-LINCOLN-LANGLADE-
MENOMINEE-NORTHERN OCONTO-DOOR-MARATHON-SHAWANO-WOOD-PORTAGE-
WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-WINNEBAGO-CALUMET-
MANITOWOC-SOUTHERN MARINETTE-SOUTHERN OCONTO-
540 AM CDT MON SEP 6 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR NORTH CENTRAL AND NORTHEAST
WISCONSIN.

.DAY ONE...TODAY AND TONIGHT

SCATTERED THUNDERSTORMS ARE EXPECTED TODAY AND TONIGHT. WHILE WIDESPREAD
SEVERE WEATHER IS NOT EXPECTED...A FEW STORMS COULD PRODUCE WINDS TO
40 MPH AND HAIL UP TO A HALF INCH.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

AN INTENSE LOW PRESSURE SYSTEM WILL MOVE ACROSS LAKE SUPERIOR TUESDAY.
WIND GUSTS OVER 40 MPH ARE POSSIBLE ACROSS MUCH OF THE REGION. THE
COMBINATION OF THE STRONG WINDS AND WET SOILS COULD CAUSE A FEW
TREES TO TOPPLE OVER OR FALL ONTO POWER LINES. THE STRONG WINDS
MAY ALSO MAKE DRIVING DIFFICULT.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION SHOULD NOT BE NEEDED TODAY OR TONIGHT.

LMZ521-522-541>543-071045-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK
ISLAND PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-
540 AM CDT MON SEP 6 2010

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF NORTHWEST LAKE
MICHIGAN AND THE WATERS OF GREEN BAY.

.DAY ONE...TODAY AND TONIGHT

INCREASING SOUTHERLY WINDS AND BUILDING WAVES MAY POSE A HAZARD TO
SMALL CRAFT OVER MOST OF THE NEAR SHORE WATERS OF LAKE MICHIGAN
TODAY AND THIS EVENING.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

GALE FORCE WINDS ARE POSSIBLE ACROSS THE ENTIRE AREA LATE TONIGHT
INTO EARLY TUESDAY EVENING...ESPECIALLY OVER THE WATERS OF NORTHERN
DOOR COUNTY.

In the hours before

Special weather statement, Sep 6, 6:15 AM CDT, 24 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
615 AM CDT MON SEP 6 2010

WIZ020-030-031-035>037-045-061215-
MENOMINEE-MARATHON-SHAWANO-WOOD-PORTAGE-WAUPACA-WAUSHARA-
INCLUDING THE CITIES OF...KESHENA...WAUSAU...WISCONSIN RAPIDS...
STEVENS POINT...WAUTOMA
615 AM CDT MON SEP 6 2010

AT 613 AM CST...DOPPLER RADAR INDICATED SCATTERED SHOWERS AND
THUNDERSTORMS MOVING INTO WOOD AND SOUTHWEST MARATHON COUNTIES.
THE SHOWERS AND STORMS WERE MOVING TO THE EAST AROUND 45 MPH.
SCATTERED SHOWERS AND STORMS WILL MOVE ACROSS CENTRAL AND PORTIONS
OF NORTH CENTRAL WISCONSIN THROUGH 7 AM. SOME OF THE STRONGER
STORMS WILL PRODUCE HAIL UP TO THREE QUARTERS OF AN INCH AND
RAINFALL AMOUNTS OF A TENTH OF AN INCH.

WIZ022-038>040-048>050-074-061215-
DOOR-OUTAGAMIE-BROWN-KEWAUNEE-WINNEBAGO-CALUMET-MANITOWOC-
SOUTHERN OCONTO-
INCLUDING THE CITIES OF...STURGEON BAY...APPLETON...GREEN BAY...
ALGOMA...OSHKOSH...CHILTON...TWO RIVERS
615 AM CDT MON SEP 6 2010

SCATTERED SHOWERS AND THUNDERSTORMS RAPIDLY DEVELOPED ACROSS
PORTIONS OF WEST CENTRAL AND SOUTHWEST WISCONSIN EARLY THIS
MORNING. THE LEADING OF THE SHOWERS AND STORMS EXTENDED FROM 20
MILES SOUTHWEST OF WAUTOMA TO 10 MILES WEST OF MARSHFIELD. THE
SHOWERS AND STORMS WERE MOVING TO THE EAST AROUND 45 MPH.
SCATTERED SHOWERS AND STORMS WILL MOVE INTO BROWN...OUTAGAMIE...
WINNEBAGO..AND CALUMET COUNTIES BETWEEN 7 AM AND 8 AM...THEN
TO THE LAKESHORE REGION BETWEEN 8 AM AND 9 AM. SOME OF THE
STRONGER STORMS WILL PRODUCE HAIL UP TO A HALF INCH IN DIAMETER
AND RAINFALL AMOUNTS UP TO A TENTH OF AN INCH.

ECKBERG

The office that day

Everything else NWS Green Bay, WI issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Sep 6, 7:00 AM CDTSevere Thunderstorm WarningGRBPortage45 min
Sep 6, 7:39 AM CDTSevere Thunderstorm WarningGRBWood36 min
Sep 6, 1:21 PM CDTSevere Thunderstorm WarningGRBKewaunee24 min
Sep 6, 4:15 PM CDTGale WarningGRB29 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2010Every severe thunderstorm warning in 2010

Sources

The product and its follow-ups from the Iowa Environmental Mesonet's archive of National Weather Service and Storm Prediction Center text; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.