Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 18, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at May 6, 2012, 9:32 AM CDT for Dane County, Jefferson County, Rock County, Wisconsin. It was in force for 28 min. 2 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- May 6, 2012, 9:32 AM CDT (14:32 UTC)
- Expired
- May 6, 2012, 10:00 AM CDT
- In force
- 28 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
Counties Dane County, WI, Jefferson County, WI, Rock County, WI
The radar
The Milwaukee radar (KMKX), 37 km from the middle of the area, began a volume at 14:34 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| May 6, 9:45 AM CDT | HAIL 1 | Edgerton, WI | |
| May 6, 9:46 AM CDT | HAIL 0.5 | Edgerton, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 2.5 hours before the alert went out and 189 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.
983 WUUS53 KMKX 061432 SVRMKX WIC025-055-105-061500- /O.NEW.KMKX.SV.W.0018.120506T1432Z-120506T1500Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 932 AM CDT SUN MAY 6 2012 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN DANE COUNTY IN SOUTH CENTRAL WISCONSIN... SOUTHWESTERN JEFFERSON COUNTY IN SOUTHEAST WISCONSIN... NORTH CENTRAL ROCK COUNTY IN SOUTH CENTRAL WISCONSIN... * UNTIL 1000 AM CDT * AT 930 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES EAST OF EVANSVILLE...AND MOVING NORTHEAST AT 35 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... EDGERTON AND MILTON AROUND 945 AM CDT. FORT ATKINSON...LAKE RIPLEY...CAMBRIDGE AND JEFFERSON AROUND 1000 AM CDT. OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE INDIANFORD...ALBION...BUSSEYVILLE AND ROCKDALE. 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. && LAT...LON 4309 8891 4292 8870 4266 8915 4279 8932 TIME...MOT...LOC 1432Z 229DEG 29KT 4278 8916 WIND...HAIL <50MPH 1.00IN $$ MBK
2 follow-up statements
262 WWUS53 KMKX 061449 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 949 AM CDT SUN MAY 6 2012 WIC025-055-105-061500- /O.CON.KMKX.SV.W.0018.000000T0000Z-120506T1500Z/ DANE WI-JEFFERSON WI-ROCK WI- 949 AM CDT SUN MAY 6 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL ROCK...SOUTHWESTERN JEFFERSON AND SOUTHEASTERN DANE COUNTIES UNTIL 1000 AM CDT... AT 944 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR EDGERTON...MOVING NORTHEAST AT 35 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... FORT ATKINSON...LAKE RIPLEY AND JEFFERSON AROUND 1000 AM CDT. OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE BUSSEYVILLE AND ROCKDALE. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4309 8891 4292 8870 4266 8915 4289 8916 TIME...MOT...LOC 1449Z 229DEG 29KT 4287 8902 WIND...HAIL <50MPH 1.00IN $$ MBK
313 WWUS53 KMKX 061457 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 957 AM CDT SUN MAY 6 2012 WIC025-055-105-061507- /O.EXP.KMKX.SV.W.0018.000000T0000Z-120506T1500Z/ DANE WI-JEFFERSON WI-ROCK WI- 957 AM CDT SUN MAY 6 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL ROCK... SOUTHWESTERN JEFFERSON AND SOUTHEASTERN DANE COUNTIES WILL EXPIRE AT 1000 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 HAIL TO THREE QUARTER INCH IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4309 8891 4292 8870 4266 8915 4289 8916 TIME...MOT...LOC 1457Z 229DEG 29KT 4291 8895 $$ 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, 9:54 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, 6:00 PM CDT | Severe Thunderstorm Warning | MKX | Walworth | 30 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.