Alert archive / Wisconsin / Tornado Watches in 2008

Tornado Watch 367

May 25, 20088 counties in Iowa; 6 counties in Minnesota; 45 counties in Wisconsin

The Storm Prediction Center issued this tornado watch at May 25, 2008, 7:12 PM CDT for 8 counties in Iowa; 6 counties in Minnesota; 45 counties in Wisconsin. It was in force for 4 hr.

The area

The outline as issued.

The facts

Issued
May 25, 2008, 7:12 PM CDT (00:12 UTC)
Expired
May 25, 2008, 10:55 PM CDT
In force
4 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
70 kt
All 59 counties

Allamakee County, IA, Chickasaw County, IA, Clayton County, IA, Fayette County, IA, Floyd County, IA, Howard County, IA, Mitchell County, IA, Winneshiek County, IA, Fillmore County, MN, Houston County, MN, Mower County, MN, Olmsted County, MN, Wabasha County, MN, Winona County, MN, Adams County, WI, Brown County, WI, Buffalo County, WI, Calumet County, WI, Chippewa County, WI, Clark County, WI, Columbia County, WI, Crawford County, WI, Dane County, WI, Dodge County, WI, Dunn County, WI, Eau Claire County, WI, Fond du Lac County, WI, Grant County, WI, Green County, WI, Green Lake County, WI, Iowa County, WI, Jackson County, WI, Jefferson County, WI, Juneau County, WI, La Crosse County, WI, Lafayette County, WI, Langlade County, WI, Lincoln County, WI, Marathon County, WI, Marinette County, WI, Marquette County, WI, Menominee County, WI, Monroe County, WI, Oconto County, WI, Outagamie County, WI, Pepin County, WI, Portage County, WI, Richland County, WI, Rock County, WI, Rusk County, WI, Sauk County, WI, Shawano County, WI, Taylor County, WI, Trempealeau County, WI, Vernon County, WI, Waupaca County, WI, Waushara County, WI, Winnebago County, WI, Wood County, WI

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
70%
One or more EF2 to EF5 tornadoes
50%
Ten or more severe wind reports
95%
One or more gusts of 65 knots or more
20%
Ten or more severe hail reports
95%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
95%

Warnings issued inside it

17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 25, 7:13 PM CDTTornado WarningMPXDunn, Eau Claire32 min
May 25, 7:22 PM CDTSevere Thunderstorm WarningARXGrant68 min
May 25, 7:22 PM CDTSevere Thunderstorm WarningGRBShawano, Waupaca38 min
May 25, 7:32 PM CDTSevere Thunderstorm WarningARXFayette43 min
May 25, 7:38 PM CDTSevere Thunderstorm WarningMPXChippewa, Dunn, Eau Claire, Pepin51 min
May 25, 7:45 PM CDTSevere Thunderstorm WarningGRBLincoln, Marathon, Wood45 min
May 25, 7:53 PM CDTSevere Thunderstorm WarningMKXLafayette67 min
May 25, 8:05 PM CDTSevere Thunderstorm WarningMKXIowa40 min
May 25, 8:21 PM CDTFlash Flood WarningARXClayton, Fayette3 hr
May 25, 8:26 PM CDTSevere Thunderstorm WarningARXBuffalo, Trempealeau22 min
May 25, 8:27 PM CDTSevere Thunderstorm WarningGRBLanglade, Lincoln, Marathon, Portage, Shawano, Wood63 min
May 25, 8:35 PM CDTSevere Thunderstorm WarningMKXDane, Green, Iowa, Lafayette55 min
May 25, 9:10 PM CDTSevere Thunderstorm WarningARXClark, Jackson35 min
May 25, 9:21 PM CDTSevere Thunderstorm WarningGRBMarathon, Portage, Shawano, Waupaca, Wood39 min
May 25, 9:33 PM CDTSevere Thunderstorm WarningGRBWood42 min
May 25, 9:43 PM CDTSevere Thunderstorm WarningARXAdams, Juneau47 min
May 25, 9:59 PM CDTSevere Thunderstorm WarningGRBOutagamie, Shawano, Waupaca27 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 0.2 hours before the alert went out and 209 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 2008-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 81 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 00:00Z on 2008-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 164 square meters per square second.1939587897Sfc1 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
81 J/kg
Mixed-layer CIN
-294 J/kg
Mixed-layer LCL
1307 m above ground
0-6 km bulk shear
49 kt
0-1 km storm-relative helicity
164 m²/s²
0-3 km storm-relative helicity
302 m²/s²
Significant tornado parameter
0.0
Supercell composite
3.1

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

000
WWUS20 KWNS 260015
SEL7  
SPC WW 260015
IAZ000-MNZ000-WIZ000-260700-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 367
NWS STORM PREDICTION CENTER NORMAN OK
710 PM CDT SUN MAY 25 2008

THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF 

       NORTHEAST IOWA
       SOUTHEAST MINNESOTA
       MUCH OF WISCONSIN

EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 710 PM UNTIL
200 AM CDT.

TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE
MILES EAST AND WEST OF A LINE FROM 35 MILES NORTH NORTHWEST OF
WAUSAU WISCONSIN TO 60 MILES SOUTHWEST OF LONEROCK WISCONSIN. 
FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

OTHER WATCH INFORMATION...THIS TORNADO WATCH REPLACES TORNADO
WATCH NUMBER 359. WATCH NUMBER 359 WILL NOT BE IN EFFECT AFTER
710 PM CDT. CONTINUE...WW 358...WW 360...WW 361...WW 363...WW
362...WW 364...WW 365...WW 366...

DISCUSSION...CLUSTERS OF INTENSE TSTMS/SUPERCELLS EXPECTED TO
CONTINUE E ACROSS WI THIS EVENING...AHEAD OF STRONG ENE-MOVING UPR
IMPULSE NOW EXITING THE DAKOTAS.  ALTHOUGH DOWNSTREAM WARM SECTOR
OVER THE UPR MS VLY IS NOT EXTREMELY WARM/MOIST...FAVORABLE
KINEMATIC FIELD WILL OVERSPREAD REGION AS BOUNDARY LAYER CONTINUES
TO DESTABILIZE FROM THE WSW.  COUPLED WITH EXISTING SUSTAINED
SUPERCELLS...AND POTENTIAL FOR ADDITIONAL DEVELOPMENT ALONG DIFFUSE
WARM FRONT EXTENDING SEWD FROM NEAR EAU...THREAT WILL EXIST FOR
TORNADOES IN ADDITION TO SVR HAIL/WIND.

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 26035.


...CORFIDI

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 25, 7:54 PM CDTTornado WatchSPCAdair, Adams, Appanoose, Audubon, Benton, Black Hawk and 56 more6 hr
May 25, 9:23 PM CDTMesoscale DiscussionSPCAppanoose, Benton, Black Hawk, Buchanan, Cedar, Clarke and 34 more67 min
May 25, 11:28 PM CDTMesoscale DiscussionSPCCedar, Clinton, Davis, Des Moines, Henry, Jefferson and 8 more62 min

Nearby

Tornado Watches in Wisconsin, 2008Tornado Watches in Iowa, 2008Tornado Watches in Minnesota, 2008Every tornado watch in 2008

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.