Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 166, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 20, 2007, 11:11 PM CDT for Pierce County, Wisconsin. It was in force for 49 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, 11:11 PM CDT (04:11 UTC)
- Expired
- Jun 21, 2007, 12:00 AM CDT
- In force
- 49 min
- Issued by
- NWS Twin Cities, MN
- Area
- Counties, with a storm outline in the text
County Pierce County, WI
The radar
The Minneapolis radar (KMPX), 78 km from the middle of the area, began a volume at 04:11 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, 4.2 hours before the alert went out and 81 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 210412 SVRMPX WIC093-210500- /O.NEW.KMPX.SV.W.0166.070621T0411Z-070621T0500Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 1111 PM CDT WED JUN 20 2007 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... PIERCE COUNTY IN WEST CENTRAL WISCONSIN... * UNTIL MIDNIGHT CDT * AT 1107 PM CDT...DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM... CAPABLE OF PRODUCING QUARTER SIZE HAIL AND 60 MPH WINDS. THIS STORM WAS LOCATED 14 MILES WEST OF ELLSWORTH...OR ABOUT 11 MILES SOUTHWEST OF RIVER FALLS...AND MOVING SOUTHEAST AT 35 MPH. * LOCATIONS IMPACTED INCLUDE... ELLSWORTH... 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. A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT THURSDAY MORNING FOR SOUTHERN MINNESOTA. LAT...LON 4484 9271 4473 9274 4459 9244 4472 9235 $$
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, 10:48 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 57 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.