Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 92, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Sep 5, 2012, 3:05 AM CDT for Iowa County, Lafayette County, Wisconsin. It was in force for 55 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 5, 2012, 3:05 AM CDT (08:05 UTC)
- Expired
- Sep 5, 2012, 4:00 AM CDT
- In force
- 55 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Iowa County, WI, Lafayette County, WI
The radar
The Milwaukee radar (KMKX), 126 km from the middle of the area, began a volume at 08:06 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
Davenport, (KDVN), launched 00:00Z, 8.1 hours before the alert went out and 133 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
- 1890 J/kg
- Mixed-layer CIN
- -49 J/kg
- Mixed-layer LCL
- 1662 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- -23 m²/s²
- 0-3 km storm-relative helicity
- 44 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.9
The text
As transmitted, in the capitals the NWS used until 2016.
721 WUUS53 KMKX 050805 SVRMKX WIC049-065-050900- /O.NEW.KMKX.SV.W.0092.120905T0805Z-120905T0900Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 305 AM CDT WED SEP 5 2012 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHERN IOWA COUNTY IN SOUTH CENTRAL WISCONSIN... NORTHERN LAFAYETTE COUNTY IN SOUTH CENTRAL WISCONSIN... * UNTIL 400 AM CDT * AT 302 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR BELMONT...OR 9 MILES EAST OF PLATTEVILLE... AND MOVING EAST AT 15 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... DARLINGTON AROUND 335 AM CDT. YELLOWSTONE LAKE STATE PARK...ARGYLE AND BLANCHARDVILLE AROUND 400 AM CDT. OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE LAMONT AND YELLOWSTONE LAKE ST PARK. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4287 8984 4262 8984 4265 9041 4283 9041 TIME...MOT...LOC 0805Z 269DEG 14KT 4274 9028 WIND...HAIL <50MPH 1.00IN $$ REM
3 follow-up statements
550 WWUS53 KMKX 050817 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 317 AM CDT WED SEP 5 2012 WIC049-065-050900- /O.CON.KMKX.SV.W.0092.000000T0000Z-120905T0900Z/ IOWA WI-LAFAYETTE WI- 317 AM CDT WED SEP 5 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN LAFAYETTE AND SOUTHERN IOWA COUNTIES UNTIL 400 AM CDT... AT 315 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL. THIS STORM WAS LOCATED 5 MILES EAST OF BELMONT...OR 7 MILES NORTHWEST OF DARLINGTON...MOVING EAST AT 15 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... DARLINGTON AROUND 335 AM CDT. YELLOWSTONE LAKE STATE PARK...ARGYLE AND BLANCHARDVILLE AROUND 400 AM CDT. OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE LAMONT. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4287 8984 4262 8984 4265 9041 4283 9041 TIME...MOT...LOC 0816Z 269DEG 14KT 4274 9022 WIND...HAIL <50MPH 1.25IN $$ REM
554 WWUS53 KMKX 050835 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 335 AM CDT WED SEP 5 2012 WIC049-065-050900- /O.CON.KMKX.SV.W.0092.000000T0000Z-120905T0900Z/ IOWA WI-LAFAYETTE WI- 335 AM CDT WED SEP 5 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN LAFAYETTE AND SOUTHEASTERN IOWA COUNTIES UNTIL 400 AM CDT... AT 331 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING HALF DOLLAR SIZE HAIL. THIS STORM WAS LOCATED 6 MILES NORTH OF DARLINGTON...MOVING EAST AT 20 MPH. THE STORM WAS BEGINNING TO ACCELERATE TO THE EAST NORTHEAST. THE SEVERE THUNDERSTORM WILL BE NEAR... YELLOWSTONE LAKE STATE PARK AROUND 350 AM CDT. BLANCHARDVILLE AND ARGYLE AROUND 400 AM CDT. OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE LAMONT. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED ROADWAYS. && LAT...LON 4264 9020 4284 9020 4287 8984 4262 8984 TIME...MOT...LOC 0834Z 256DEG 17KT 4277 9009 WIND...HAIL <50MPH 1.25IN $$ REM
795 WWUS53 KMKX 050900 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 400 AM CDT WED SEP 5 2012 WIC049-065-050909- /O.EXP.KMKX.SV.W.0092.000000T0000Z-120905T0900Z/ IOWA WI-LAFAYETTE WI- 400 AM CDT WED SEP 5 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LAFAYETTE AND SOUTHEASTERN IOWA COUNTIES WILL EXPIRE AT 400 AM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER SMALL HAIL UP TO PENNY SIZE AND HEAVY RAIN ARE STILL POSSIBLE WITH THIS THUNDERSTORM...AS WELL AS ANOTHER STORM BETWEEN SHULLSBURG AND DARLINGTON. LAT...LON 4264 9020 4284 9020 4287 8984 4262 8984 TIME...MOT...LOC 0859Z 256DEG 17KT 4280 8993 $$ REM
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Sep 4, 7:20 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Sauk | 55 min |
| Sep 4, 7:46 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Iowa, Sauk | 59 min |
| Sep 4, 7:48 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Sauk | 42 min |
| Sep 4, 8:12 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Dodge, Green, Jefferson, Rock | 63 min |
| Sep 4, 8:16 PM CDT | Severe Thunderstorm Warning | MKX | Green, Iowa, Lafayette | 59 min |
| Sep 4, 8:35 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Jefferson, Rock, Walworth, Washington, Waukesha | 55 min |
| Sep 4, 8:45 PM CDT | Special Marine Warning | MKX | 2 hr | |
| Sep 4, 9:07 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Ozaukee, Racine, Walworth, Washington and 1 more | 83 min |
| Sep 4, 9:57 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Sheboygan | 34 min |
| Sep 4, 10:01 PM CDT | Special Marine Warning | MKX | 65 min | |
| Sep 4, 10:45 PM CDT | Special Marine Warning | MKX | 45 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.