Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2010

Severe Thunderstorm Warning 92, NWS Green Bay, WI

September 6, 2010Kewaunee County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Sep 6, 2010, 1:21 PM CDT for Kewaunee County, Wisconsin. It was in force for 24 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, 1:21 PM CDT (18:21 UTC)
Expired
Sep 6, 2010, 1:45 PM CDT
In force
24 min
Issued by
NWS Green Bay, WI
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

County Kewaunee County, WI

The radar

The Green Bay radar (KGRB), 47 km from the middle of the area, began a volume at 18:22 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 12:00Z, 6.4 hours before the alert went out and 46 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 12:00Z 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 12:00Z on 2010-09-06The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 324 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
987 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
324 m²/s²
0-3 km storm-relative helicity
312 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, 6:53 AM CDT, 6 hours 28 minutes earlier.

Area forecast discussion, Sep 6, 6:53 AM CDT, 6 hours 28 minutes before
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Hazardous weather outlook, Sep 6, 5:40 AM CDT, 7 hours 41 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

Local storm report, Sep 6, 7:36 AM CDT, 5 hours 45 minutes before
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Local storm report, Sep 6, 7:43 AM CDT, 5 hours 38 minutes before
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Local storm report, Sep 6, 7:57 AM CDT, 5 hours 24 minutes before
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Local storm report, Sep 6, 8:04 AM CDT, 5 hours 17 minutes before
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Special weather statement, Sep 6, 12:28 PM CDT, 53 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
1228 PM CDT MON SEP 6 2010

WIZ022-040-061800-
DOOR-KEWAUNEE-
1228 PM CDT MON SEP 6 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 1222 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR LUXEMBURG...MOVING EAST AT 35 MPH.

PENNY SIZE HAIL...OCCASIONAL CLOUD TO GROUND LIGHTNING AND BRIEF
HEAVY DOWNPOURS ARE POSSIBLE WITH THIS STORM.

* THE THUNDERSTORM WILL BE NEAR...
  EUREN AND SLOVAN BY 1235 PM CDT...
  RANKIN AND RIO CREEK BY 1240 PM CDT...
  FORESTVILLE BY 1245 PM CDT...

STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A
STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

KIECKBUSCH
Special weather statement, Sep 6, 1:06 PM CDT, 15 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
106 PM CDT MON SEP 6 2010

WIZ022-039-040-061845-
BROWN-DOOR-KEWAUNEE-
106 PM CDT MON SEP 6 2010

...SIGNIFICANT WEATHER ADVISORY...

AT 101 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
STRONG THUNDERSTORM NEAR DYCKESVILLE...MOVING EAST AT 35 MPH.

PENNY SIZE HAIL...OCCASIONAL CLOUD TO GROUND LIGHTNING...BRIEF HEAVY
DOWNPOURS...ARE POSSIBLE WITH THIS STORM.

* THE THUNDERSTORM WILL BE NEAR...
  ROSIERE BY 120 PM CDT...
  FORESTVILLE BY 130 PM CDT...

STAY AWAY FROM HIGH OBJECTS OUTDOORS SUCH AS TREES. SEEK SHELTER IN A
STURDY STRUCTURE UNTIL THIS STORM HAS PASSED.

KIECKBUSCH

The office that day

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

IssuedProductOfficeCountiesLasted
Sep 6, 6:39 AM CDTSevere Thunderstorm WarningGRBWood51 min
Sep 6, 7:00 AM CDTSevere Thunderstorm WarningGRBPortage45 min
Sep 6, 7:39 AM CDTSevere Thunderstorm WarningGRBWood36 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.