Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 280, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Sep 4, 2012, 6:11 PM CDT for Eau Claire County, Wisconsin. It was in force for 30 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
- Sep 4, 2012, 6:11 PM CDT (23:11 UTC)
- Expired
- Sep 4, 2012, 6:41 PM CDT
- In force
- 30 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Eau Claire County, WI
The radar
The La Crosse radar (KARX), 93 km from the middle of the area, began a volume at 23:13 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Sep 4, 3:27 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.2 hours before the alert went out and 207 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
- 1446 J/kg
- Mixed-layer CIN
- -171 J/kg
- Mixed-layer LCL
- 1471 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 172 m²/s²
- 0-3 km storm-relative helicity
- 221 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 7.8
The text
As transmitted, in the capitals the NWS used until 2016.
129
WUUS53 KMPX 042311
SVRMPX
WIC035-042345-
/O.NEW.KMPX.SV.W.0280.120904T2311Z-120904T2345Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
611 PM CDT TUE SEP 4 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
SOUTHEASTERN EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 645 PM CDT
* AT 609 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING HALF DOLLAR SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS
STORM WAS LOCATED 8 MILES NORTH OF PRICE...OR ABOUT 23 MILES
SOUTHEAST OF EAU CLAIRE...AND MOVING EAST AT 20 MPH.
LOCATIONS IN THE WARNING INCLUDE...
FAIRCHILD...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW
INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4459 9094 4458 9101 4461 9119 4478 9116
4477 9091 4468 9091 4460 9091
TIME...MOT...LOC 2311Z 278DEG 18KT 4469 9106
WIND...HAIL 60MPH 1.25IN
$$2 follow-up statements
026
WWUS53 KMPX 042326
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
626 PM CDT TUE SEP 4 2012
WIC035-042345-
/O.CON.KMPX.SV.W.0280.000000T0000Z-120904T2345Z/
EAU CLAIRE WI-
626 PM CDT TUE SEP 4 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN
EAU CLAIRE COUNTY IN WEST CENTRAL WISCONSIN UNTIL 645 PM CDT...
AT 623 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES NORTH OF PRICE...OR
25 MILES NORTHEAST OF WHITEHALL...MOVING EAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
FAIRCHILD.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
&&
LAT...LON 4459 9094 4458 9101 4461 9111 4477 9103
4475 9092 4468 9091 4460 9091
TIME...MOT...LOC 2326Z 288DEG 16KT 4466 9100
WIND...HAIL 60MPH 1.00IN
$$624
WWUS53 KMPX 042341
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
641 PM CDT TUE SEP 4 2012
WIC035-042356-
/O.CAN.KMPX.SV.W.0280.000000T0000Z-120904T2345Z/
EAU CLAIRE WI-
641 PM CDT TUE SEP 4 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN EAU CLAIRE COUNTY
IN WEST CENTRAL WISCONSIN IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4459 9094 4458 9101 4461 9111 4477 9103
4475 9092 4468 9091 4460 9091
TIME...MOT...LOC 2341Z 290DEG 26KT 4462 9085
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 3:55 PM CDT | Special Weather Statement | MPX | Chippewa | 50 min |
| Sep 4, 4:17 PM CDT | Severe Thunderstorm Warning | MPX | Barron, Chippewa, Rusk | 43 min |
| Sep 4, 4:55 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa | 50 min |
| Sep 4, 5:06 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 39 min |
| Sep 4, 5:19 PM CDT | Severe Thunderstorm Warning | MPX | Eau Claire | 26 min |
| Sep 4, 5:39 PM CDT | Severe Thunderstorm Warning | MPX | Chippewa, Eau Claire | 36 min |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2012Every severe thunderstorm warning in 2012
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.