Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2006

Severe Thunderstorm Warning 133, NWS Green Bay, WI

August 1, 2006Marinette County, Wisconsin

NWS Green Bay, WI issued this severe thunderstorm warning at Aug 1, 2006, 6:15 PM CDT for Marinette County, Wisconsin. It was in force for 28 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
Aug 1, 2006, 6:15 PM CDT (23:15 UTC)
Expired
Aug 1, 2006, 6:43 PM CDT
In force
28 min
Issued by
NWS Green Bay, WI
Area
Counties, with a storm outline in the text

County Marinette County, WI

The radar

The Green Bay radar (KGRB), 95 km from the middle of the area, began a volume at 23:18 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, 11.3 hours before the alert went out and 97 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 2006-08-01Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1836 joules per kilogram.LCLLFCEL10008507005003002001001 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 2006-08-01The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 25 square meters per square second.193958Sfc1 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
1836 J/kg
Mixed-layer CIN
-81 J/kg
Mixed-layer LCL
953 m above ground
0-6 km bulk shear
26 kt
0-1 km storm-relative helicity
25 m²/s²
0-3 km storm-relative helicity
75 m²/s²
Significant tornado parameter
0.3
Supercell composite
2.9

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 Aug 1, 4:15 PM CDT, 2 hours earlier.

Area forecast discussion, Aug 1, 4:15 PM CDT, 2 hours before
AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREEN BAY WI
415 PM CDT TUE AUG 1 2006

.SHORT TERM...TONIGHT AND WEDNESDAY

MAIN CONCERN IN THE SHORT-TERM WILL BE EVOLVING CONVECTIVE ACTIVITY AND
SEVERE POTENTIAL ASSOCIATED WITH APPROACHING FRONTAL BOUNDARY THIS
EVENING...TRANSITIONING TO MORE OF A HEAVY RAIN EVENT OVERNIGHT.

DESPITE SOME PERSISTENT MID TO HIGH LEVEL CLOUDS THIS AFTERNOON...THERE
WAS ENOUGH INSOLATION TO ALLOW SURFACE TEMPS TO CREEP INTO THE MIDDLE
90S OVER MUCH OF THE FOX VALLEY THIS AFTERNOON.  WITH DEW POINTS IN THE
LOW TO MID 70S...HEAT INDICES WERE ABLE TO APPROACH THE 100-105 MARK IN
A FEW AREAS.  WILL ALLOW THE HEAT ADVISORY TO EXPIRE AT 7 PM THIS
EVENING FOR THE FOX VALLEY.

NEXT CONCERN IS SEVERE WEATHER THREAT FOR LATE THIS AFTERNOON INTO THE
EVENING AHEAD OF APPROACHING COLD FRONT EXTENDING FROM IWD TO MSP TO
SUX. WHERE THE CLOUDS HAD THINNED OVER WESTERN AND CENTRAL WISCONSIN
LATE THIS AFTERNOON...SCATTERED THUNDERSTORMS HAVE INCREASED IN AREAL
COVERAGE.  EXPECT SCATTERED THUNDERSTORMS TO INCREASE IN COVERAGE OVER
INITIALLY OVER THE SOUTHWEST HALF OF THE FORECAST AREA IN THE VICINITY
OF THE APPROACHING FRONTAL BOUNDARY THEN SPREAD NORTHEAST.  ALTHOUGH
DEEP LAYER SHEAR SOMEWHAT MARGINAL...GIVEN MODERATE INSTABILITY...EXPECT
A FEW STORMS TO REACH SEVERE LIMITS LATER THIS AFTERNOON.  AS PER
PREVIOUS FORECAST...AS EVENING PROGRESSES...EXPECT SITUATION TO EVOLVE
INTO A HEAVY RAINFALL THREAT AS 40-45 KY LLJ IMPINGES ON FRONTAL
BOUNDARY. GIVEN THE DEGREE OF INSTABILITY SOUTH OF THE FRONT...STRENGTH
OF LOW-LEVL FORCING...HI PW VALUES...WARM CLOUD LAYER DEPTH AND
RELATIVELY WEAK WINDS ALOFT...HEAVY RAINFALL QUITE POSSIBLE PARTICULARLY
OVER THE WESTERN/WESTCENTRAL PORTION OF THE STATE BEWTEEN ABOUT 9 PM AND
3 AM.  HOWEVER...DESPITE RAINFALL OVER LAST FEW DAYS OVER WESTERN
PORTION OF THE FCST AREA...FFG VALUES STILL ON THE ORDER OF 2-3 INCHES
PER 3 HOURS.  ALTHOUGH THESE RAINFALL RATES ARE NOT OUT OF THE
QUESTION...FEEL MAIN FOCUS WILL BE A BIT FURTHER WEST.  HAVE OPTED TO
HOLD OF ON FLASH FLOOD WATCH FOR NOW BUT WILL CONTINUE TO MONITOR
SITUATION CLOSELY THIS EVENING.

.LONG TERM...WEDNESDAY NIGHT THROUGH NEXT TUESDAY

THE COLD FRONT WILL DEPART WEDNESDAY NIGHT LEAVING DRIER AND COOLER AIR
FOR THE REMAINDER OF THE WORK WEEK. THERE IS SOME CHANCE OF SPRINKLES OR
A BRIEF SHOWER THURSDAY NIGHT AS A REINFORCING PUSH OF COOLER AIR
ARRIVES AND ANOTHER SMALL CHANCE OF SHOWERS OR SPRINKLES FRIDAY NIGHT AS
A WARM FRONT ORGANIZES TO OUR WEST. THINK THAT DRY AIR WILL WIN OUT AND
KEPT IT DRY UNTIL SATURDAY NIGHT AND SUNDAY WHEN ANOTHER FRONT WITH
BETTER LOW LEVEL MOISTURE ARRIVES.

&&
.GRB WATCHES/WARNINGS/ADVISORIES...NONE.

&&

BRUSKY/RDM
WEATHER.GOV/GREENBAY
Hazardous weather outlook, Aug 1, 5:30 AM CDT, 12 hours 45 minutes before
HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE GREEN BAY WI
530 AM CDT TUE AUG 1 2006

WIZ005-010>013-018>022-030-031-035>040-045-048>050-073-074-021100-
VILAS-ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-SOUTHERN MARINETTE-
LINCOLN-LANGLADE-MENOMINEE-NORTHERN OCONTO-SOUTHERN OCONTO-DOOR-
MARATHON-SHAWANO-WOOD-PORTAGE-WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-
WINNEBAGO-CALUMET-MANITOWOC-
530 AM CDT TUE AUG 1 2006

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

.DAY ONE...TODAY AND TONIGHT

THUNDERSTORMS ARE POSSIBLE ACROSS NORTHEAST WISCONSIN TODAY AND TONIGHT.
ANY STORMS THAT DEVELOP COULD PRODUCE DAMAGING WIND GUSTS.

AS THE THUNDERSTORMS CONTINUE INTO THE OVERNIGHT HOURS...HEAVY RAINFALL
IS POSSIBLE ACROSS NORTHEAST WISCONSIN.

HOT AND HUMID WEATHER IS EXPECTED OVER EAST CENTRAL WISCONSIN TODAY...
WITH HEAT INDICES RISING TO AROUND 105.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH NEXT MONDAY

THE CHANCE OF THUNDERSTORMS WILL CONTINUE INTO WEDNESDAY. HEAVY RAINFALL
IS AGAIN POSSIBLE. THE RISK OF HEAVY RAINFALL WEDNESDAY WILL BE MAINLY
OVER CENTRAL AND EAST-CENTRAL PORTIONS OF THE STATE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE NEEDED TODAY AND TONIGHT.

LMZ521-522-541>543-564-021100-
THE BAY OF GREEN BAY SOUTH OF A LINE FROM CEDAR RIVER MI TO ROCK ISLAND
PASSAGE-LAKE MICHIGAN FROM WASHINGTON ISLAND TO SHEBOYGAN-THE ADJOINING
WISCONSIN WATERS OF LAKE MICHIGAN OUT TO MID-LAKE-
530 AM CDT TUE AUG 1 2006

THIS HAZARDOUS WEATHER OUTLOOK IS FOR THE WATERS OF CENTRAL AND
SOUTHERN GREEN BAY...AND LAKE MICHIGAN FROM ROCK ISLAND PASSAGE
TO SHEBOYGAN.

.DAY ONE...TODAY AND TONIGHT

THERE IS A CHANCE OF THUNDERSTORMS OVER THE BAY AND LAKE MICHIGAN
NEARSHORE WATERS TODAY AND TONIGHT. THE MAIN SEVERE THREAT WITH THE
THUNDERSTORMS WILL BE DAMAGING WINDS. AS THE THUNDERSTORMS CONTINUE INTO
THE OVERNIGHT HOURS...HEAVY RAINFALL IS POSSIBLE.

PATCHY FOG IS POSSIBLE OVER THE NEARSHORE WATERS OF LAKE MICHIGAN...
TODAY AND TONIGHT.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH NEXT MONDAY

THE CHANCE OF THUNDERSTORMS WILL CONTINUE INTO WEDNESDAY. HEAVY RAINFALL
IS AGAIN POSSIBLE.

SRF
WEATHER.GOV/GREENBAY

In the hours before

Local storm report, Aug 1, 4:38 PM CDT, 1 hour 37 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
438 PM CDT TUE AUG 01 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0434 PM     HEAVY RAIN       COLBY                   44.91N 90.30W
08/01/2006  M0.67 INCH       MARATHON           WI   CO-OP OBSERVER

            0.67 OF AN INCH IN 7 MINUTES. WIND GUST EST 35 MPH AT
            ONSET.

&&
Local storm report, Aug 1, 4:48 PM CDT, 1 hour 27 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE GREEN BAY WI
448 PM CDT TUE AUG 01 2006

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0434 PM     TSTM WND GST     OSHKOSH                 44.01N 88.55W
08/01/2006  M48 MPH          WINNEBAGO          WI   ASOS

&&
Special weather statement, Aug 1, 4:50 PM CDT, 1 hour 25 minutes before
SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE GREEN BAY WI
450 PM CDT TUE AUG 1 2006

WIZ010>013-018>022-030-031-035>040-045-048>050-073-074-020100-
ONEIDA-FOREST-FLORENCE-NORTHERN MARINETTE-SOUTHERN MARINETTE-LINCOLN-
LANGLADE-MENOMINEE-NORTHERN OCONTO-SOUTHERN OCONTO-DOOR-MARATHON-
SHAWANO-WOOD-PORTAGE-WAUPACA-OUTAGAMIE-BROWN-KEWAUNEE-WAUSHARA-
WINNEBAGO-CALUMET-MANITOWOC-
450 PM CDT TUE AUG 1 2006

...THUNDERSTORMS WITH VERY HEAVY RAIN AND STRONG WINDS EXPECTED THIS
EVENING...

SCATTERED THUNDERSTORMS DEVELOPED LATE THIS AFTERNOON IN A WARM AND
HUMID AIRMASS AHEAD OF A SLOW MOVING COLD FRONT.  THE STORMS ARE
FORECAST TO CONTINUE TO DEVELOP AND MOVE EAST INTO THE EVENING.

THE STORMS WILL PRODUCE TROPICAL RAINFALL WHICH COULD CAUSE URBAN AND
SMALL STREAM FLOODING.  THE STRONGEST STORMS WILL ALSO BE CAPABLE OF
PRODUCING WIND GUSTS OVER 50 MPH AND HAIL.

STAY TUNED TO NATIONAL WEATHER SERVICE FORECASTS AND UPDATES ON THIS
EVENINGS WEATHER SITUATION.

JKL
WEATHER.GOV/GREENBAY
Local storm report, Aug 1, 5:49 PM CDT, 26 minutes before
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The office that day

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

IssuedProductOfficeCountiesLasted
Aug 1, 3:27 PM CDTSevere Thunderstorm WarningGRBWaupaca33 min
Aug 1, 4:57 PM CDTSpecial Marine WarningGRB2 hr
Aug 1, 5:00 PM CDTSevere Thunderstorm WarningGRBMarinette30 min
Aug 1, 5:29 PM CDTSpecial Marine WarningGRB51 min
Aug 1, 5:31 PM CDTTornado WarningGRBDoor36 min
Aug 1, 6:48 PM CDTSevere Thunderstorm WarningGRBDoor, Kewaunee27 min
Aug 1, 6:54 PM CDTSpecial Marine WarningGRB96 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2006Every severe thunderstorm warning in 2006

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.