Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 164, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2007, 10:48 PM CDT for Chippewa County, Eau Claire County, Wisconsin. It was in force for 57 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 20, 2007, 10:48 PM CDT (03:48 UTC)
- Expired
- Jun 20, 2007, 11:45 PM CDT
- In force
- 57 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
Counties Chippewa County, WI, Eau Claire County, WI
The radar
The La Crosse radar (KARX), 114 km from the middle of the area, began a volume at 03:48 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
Minneapolis, MN (KMPX), launched 00:00Z, 3.8 hours before the alert went out and 175 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.
- Mixed-layer CAPE
- 551 J/kg
- Mixed-layer CIN
- -41 J/kg
- Mixed-layer LCL
- 2355 m above ground
- 0-6 km bulk shear
- 53 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 159 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.1
The text
As transmitted, in the capitals the NWS used until 2016.
000 WUUS53 KMPX 210348 SVRMPX WIC017-035-210445- /O.NEW.KMPX.SV.W.0164.070621T0348Z-070621T0445Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1048 PM CDT WED JUN 20 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CHIPPEWA COUNTY IN WEST CENTRAL WISCONSIN... EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL 1145 PM CDT * AT 1046 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING NICKEL SIZE HAIL AND 60 MPH WINDS. THIS STORM WAS LOCATED 3 MILES NORTH OF EAU CLAIRE...AND MOVING SOUTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... ALTOONA... FALL CREEK... AUGUSTA... SEVERE THUNDERSTORMS CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED. LAT...LON 4497 9159 4481 9161 4463 9113 4481 9101 $$
1 follow-up statement
000 WWUS53 KMPX 210402 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1102 PM CDT WED JUN 20 2007 WIC017-035-210445- /O.CON.KMPX.SV.W.0164.000000T0000Z-070621T0445Z/ CHIPPEWA WI-EAU CLAIRE WI- 1102 PM CDT WED JUN 20 2007 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1145 PM CDT FOR EAU CLAIRE AND CHIPPEWA COUNTIES IN WEST CENTRAL WISCONSIN... AT 1059 PM CDT...DOPPLER RADAR CONTINUED TO INDICATE A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING LARGE HAIL AND DAMAGING WINDS. THIS STORM WAS LOCATED 4 MILES EAST OF ALTOONA...OR ABOUT OVER ALTOONA...AND MOVING SOUTHEAST AT 35 MPH. AT 1056 PM CDT...WIND GUSTS AROUND 60 MPH WERE MEASURED AT THE EAU CLAIRE AIRPORT. OTHER LOCATIONS IN THE WARNING INCLUDE LUDINGTON...LAKE HALLIE...FALL CREEK...EAU CLAIRE...AUGUSTA AND ALTOONA. LAT...LON 4491 9146 4481 9161 4463 9106 4479 9098 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 7:07 PM CDT | Severe Thunderstorm Warning | MPX | Polk | 38 min |
| Jun 20, 7:34 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 56 min |
| Jun 20, 7:59 PM CDT | Severe Thunderstorm Warning | MPX | Rusk | 27 min |
| Jun 20, 9:20 PM CDT | Severe Thunderstorm Warning | MPX | Saint Croix | 55 min |
| Jun 20, 10:00 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 60 min |
| Jun 20, 10:39 PM CDT | Severe Thunderstorm Warning | MPX | Pepin | 51 min |
| Jun 20, 11:11 PM CDT | Severe Thunderstorm Warning | MPX | Pierce | 49 min |
| Jun 21, 12:58 AM CDT | Severe Thunderstorm Warning | MPX | Pepin | 17 min |
| Jun 21, 1:39 AM CDT | Severe Thunderstorm Warning | MPX | Pepin | 66 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2007Every severe thunderstorm warning in 2007
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.