Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 22, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at May 6, 2012, 6:00 PM CDT for Walworth 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
- May 6, 2012, 6:00 PM CDT (23:00 UTC)
- Expired
- May 6, 2012, 6:30 PM CDT
- In force
- 30 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Walworth County, WI
The radar
The Milwaukee radar (KMKX), 23 km from the middle of the area, began a volume at 23:03 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
Green Bay/Straub, WI (KGRB), launched 12:00Z, 11.0 hours before the alert went out and 195 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 691 m above ground
- 0-6 km bulk shear
- 28 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 113 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
630 WUUS53 KMKX 062300 SVRMKX WIC127-062330- /O.NEW.KMKX.SV.W.0022.120506T2300Z-120506T2330Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 600 PM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHERN WALWORTH COUNTY IN SOUTHEAST WISCONSIN... * UNTIL 630 PM CDT * AT 559 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR WHITEWATER...AND MOVING EAST AT 30 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... EAST TROY AROUND 630 PM CDT. OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE MILLARD...LA GRANGE...TIBBETS...ABELLS CORNERS AND TROY CENTER. 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. IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES LEADING KILLERS. REMEMBER... IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4272 8877 4284 8876 4284 8841 4271 8834 TIME...MOT...LOC 2300Z 265DEG 24KT 4278 8871 WIND...HAIL <50MPH 1.00IN $$ MBK
3 follow-up statements
827 WWUS53 KMKX 062308 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 608 PM CDT SUN MAY 6 2012 WIC127-062330- /O.CON.KMKX.SV.W.0022.000000T0000Z-120506T2330Z/ WALWORTH WI- 608 PM CDT SUN MAY 6 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN WALWORTH COUNTY UNTIL 630 PM CDT... AT 603 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED JUST SOUTH OF WHITEWATER...MOVING EAST AT 30 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... EAST TROY AROUND 630 PM CDT. OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE TIBBETS...ABELLS CORNERS AND TROY CENTER. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4272 8877 4284 8876 4284 8841 4271 8834 TIME...MOT...LOC 2308Z 265DEG 24KT 4278 8864 WIND...HAIL <50MPH 1.00IN $$ MBK
349 WWUS53 KMKX 062321 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 621 PM CDT SUN MAY 6 2012 WIC127-062330- /O.CON.KMKX.SV.W.0022.000000T0000Z-120506T2330Z/ WALWORTH WI- 621 PM CDT SUN MAY 6 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHERN WALWORTH COUNTY UNTIL 630 PM CDT... AT 616 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 7 MILES SOUTH OF PALMYRA...OR 8 MILES NORTH OF ELKHORN...MOVING EAST AT 30 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... EAST TROY AROUND 630 PM CDT. PRECAUTIONARY/PREPAREDNESS ACTIONS... PREPARE IMMEDIATELY FOR LARGE HAIL AND DAMAGING WINDS IF YOU ARE IN THE PATH OF THIS STORM. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER... PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. IN ADDITION TO LARGE HAIL AND DAMAGING WINDS...CONTINUOUS CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURE'S LEADING KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && LAT...LON 4272 8866 4284 8867 4284 8841 4271 8834 TIME...MOT...LOC 2321Z 265DEG 24KT 4279 8852 WIND...HAIL <50MPH 1.00IN $$
511 WWUS53 KMKX 062331 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 631 PM CDT SUN MAY 6 2012 WIC127-062340- /O.EXP.KMKX.SV.W.0022.000000T0000Z-120506T2330Z/ WALWORTH WI- 631 PM CDT SUN MAY 6 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WALWORTH COUNTY HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED SLIGHTLY. THE STORM IS CURRENTLY NEAR ABELLS CORNERS AND WAS MOVING EAST AT 30 MPH. THE STORM HAS SHOWN SLIGHT REINTENSIFICATION SINCE 625 PM CDT. IF THIS CONTINUES...A NEW SEVERE THUNDERSTORM WARNING MAY BE ISSUED FOR NORTHEAST WALWORTH COUNTY. LAT...LON 4272 8866 4284 8867 4284 8841 4271 8834 TIME...MOT...LOC 2321Z 265DEG 24KT 4279 8852 $$ MBK
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 7:52 AM CDT | Severe Thunderstorm Warning | MKX | Marquette | 24 min |
| May 6, 8:29 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Green Lake, Marquette | 31 min |
| May 6, 9:10 AM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dodge, Fond du Lac, Green Lake | 30 min |
| May 6, 9:32 AM CDT | Severe Thunderstorm Warning | MKX | Dane, Jefferson, Rock | 28 min |
| May 6, 9:54 AM CDT | Severe Thunderstorm Warning | MKX | Jefferson, Rock, Walworth | 36 min |
| May 6, 10:12 AM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 33 min |
| May 6, 12:22 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Milwaukee, Racine, Walworth, Waukesha | 23 min |
| May 6, 12:27 PM CDT | Special Marine Warning | MKX | 40 min | |
| May 6, 6:46 PM CDT | Severe Thunderstorm Warning | MKX | Racine, Walworth | 29 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.