Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 27, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at May 20, 2012, 4:25 PM CDT for Kenosha County, Racine County, Walworth County, Wisconsin. It was in force for 35 min. 7 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 20, 2012, 4:25 PM CDT (21:25 UTC)
- Expired
- May 20, 2012, 5:00 PM CDT
- In force
- 35 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Kenosha County, WI, Racine County, WI, Walworth County, WI
The radar
The Milwaukee radar (KMKX), 47 km from the middle of the area, began a volume at 21:29 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 20, 4:37 PM CDT | TSTM WND DMG | 5 Ne Lake Geneva, WI | A TREE AND POWERLINE REPORTED DOWN IN THE LYONS AREA...NORTHEAST OF LAKE GENEVA. |
| May 20, 4:37 PM CDT | TSTM WND DMG | Pell Lake, WI | TREE DOWN IN BLOOMFIELD WHICH IS IN THE PELL LAKE AREA. |
| May 20, 4:42 PM CDT | TSTM WND DMG | 3 Ese Twin Lakes, WI | WIRES DOWN. |
| May 20, 4:42 PM CDT | TSTM WND DMG | 4 N Paddock Lake, WI | TREE DOWN |
| May 20, 4:42 PM CDT | TSTM WND DMG | Bristol, WI | WIRES DOWN |
| May 20, 4:43 PM CDT | TSTM WND GST 51 | Bassett, WI | |
| May 20, 4:54 PM CDT | TSTM WND GST 54 | Kenosha Airport, 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, 9.4 hours before the alert went out and 203 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
- 752 J/kg
- Mixed-layer CIN
- -121 J/kg
- Mixed-layer LCL
- 1614 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 31 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
467 WUUS53 KMKX 202125 SVRMKX WIC059-101-127-202200- /O.NEW.KMKX.SV.W.0027.120520T2125Z-120520T2200Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 425 PM CDT SUN MAY 20 2012 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... KENOSHA COUNTY IN SOUTHEAST WISCONSIN... WESTERN RACINE COUNTY IN SOUTHEAST WISCONSIN... SOUTHEASTERN WALWORTH COUNTY IN SOUTHEAST WISCONSIN... * UNTIL 500 PM CDT * AT 419 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR HEBRON...OR 7 MILES EAST OF HARVARD...AND MOVING NORTHEAST AT 45 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... PELL LAKE...GENOA CITY AND LAKE GENEVA AROUND 430 PM CDT. POWERS LAKE AND TWIN LAKES AROUND 435 PM CDT. BOHNERS LAKE...SILVER LAKE AND CAMP LAKE AROUND 440 PM CDT. BURLINGTON AIRPORT AND PADDOCK LAKE AROUND 445 PM CDT. BROWNS LAKE AND ROCHESTER AROUND 450 PM CDT. EAGLE LAKE...UNION GROVE AND WATERFORD NORTH AROUND 455 PM CDT. OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE BASSETT...SLADES CORNERS...NEW MUNSTER...BURLINGTON AND KANSASVILLE. 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 4284 8819 4261 8784 4249 8806 4249 8858 TIME...MOT...LOC 2124Z 226DEG 37KT 4248 8842 WIND...HAIL 60MPH 1.00IN $$ BROOKS
3 follow-up statements
958 WWUS53 KMKX 202137 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 437 PM CDT SUN MAY 20 2012 WIC059-101-127-202200- /O.CON.KMKX.SV.W.0027.000000T0000Z-120520T2200Z/ RACINE WI-WALWORTH WI-KENOSHA WI- 437 PM CDT SUN MAY 20 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KENOSHA... SOUTHEASTERN WALWORTH AND WESTERN RACINE COUNTIES UNTIL 500 PM CDT... AT 433 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR POWERS LAKE...OR NEAR TWIN LAKES...MOVING NORTHEAST AT 45 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... BURLINGTON AIRPORT AND PADDOCK LAKE AROUND 445 PM CDT. BROWNS LAKE AND ROCHESTER AROUND 450 PM CDT. EAGLE LAKE...UNION GROVE AND WATERFORD NORTH AROUND 455 PM CDT. KENOSHA AIRPORT AROUND 500 PM CDT. OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE BURLINGTON AND KANSASVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4284 8819 4261 8784 4249 8806 4249 8858 TIME...MOT...LOC 2138Z 226DEG 37KT 4258 8828 WIND...HAIL 60MPH <.75IN $$ KAPELA
007
WWUS53 KMKX 202151
SVSMKX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
451 PM CDT SUN MAY 20 2012
WIC059-101-127-202200-
/O.CON.KMKX.SV.W.0027.000000T0000Z-120520T2200Z/
RACINE WI-WALWORTH WI-KENOSHA WI-
451 PM CDT SUN MAY 20 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR KENOSHA...EAST
CENTRAL WALWORTH AND WESTERN RACINE COUNTIES UNTIL 500 PM CDT...
AT 447 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND
DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED NEAR
BROWNS LAKE...OR 9 MILES NORTHWEST OF PADDOCK LAKE...MOVING NORTHEAST
AT 60 MPH.
LAW ENFORCEMENT AGENCIES REPORTED VERY WINDY CONDITIONS AS THE STORM
MOVED THROUGH SOUTHEASTERN WALWORTH COUNTY INTO WESTERN KENOSHA
COUNTY.
THE SEVERE THUNDERSTORM WILL BE NEAR...
EAGLE LAKE...WATERFORD NORTH...UNION GROVE AND KENOSHA AIRPORT
AROUND 455 PM CDT.
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 4283 8819 4261 8784 4249 8826 4262 8844
4274 8830
TIME...MOT...LOC 2150Z 222DEG 52KT 4269 8820
WIND...HAIL 60MPH 1.00IN
$$
KAPELA056
WWUS53 KMKX 202205
SVSMKX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
505 PM CDT SUN MAY 20 2012
WIC059-101-127-202212-
/O.EXP.KMKX.SV.W.0027.000000T0000Z-120520T2200Z/
RACINE WI-WALWORTH WI-KENOSHA WI-
505 PM CDT SUN MAY 20 2012
...THE SEVERE THUNDERSTORM WARNING FOR KENOSHA...EAST CENTRAL
WALWORTH AND WESTERN RACINE COUNTIES HAS EXPIRED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AS IT MOVED
NORTHEAST THROUGH PORTIONS OF KENOSHA AND RACINE COUNTY.
THE ORIGINAL STORM THAT PROMPTED THE WARNING WAS ABOUT 5 MILES
NORTHEAST OF BURLINGTON...AND MOVING NORTHEAST. OTHER SCATTERED
STORMS WERE FOUND IN RACINE AND KENOSHA COUNTIES.
THE GUST FRONT ASSOCIATED WITH ALL OF THESE STORMS REACHED THE LAKE
MICHIGAN SHORELINE AROUND 5 PM IN THE KENOSHA AREA. WIND GUSTS WERE
ON THE ORDER OF 50 MPH.
WIND GUSTS OUT OF THE SOUTHWEST FROM 40 TO 50 MPH CAN BE EXPECTED IN
THE EASTERN PORTIONS OF THE COUNTIES OF RACINE AND KENOSHA COUNTY
THROUGH ABOUT 515 PM.
LAT...LON 4283 8819 4261 8784 4249 8826 4262 8844
4274 8830
TIME...MOT...LOC 2151Z 222DEG 52KT 4270 8818
$$The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 20, 3:06 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Green Lake | 16 min |
| May 20, 4:30 PM CDT | Special Marine Warning | MKX | 58 min | |
| May 20, 5:43 PM CDT | Special Marine Warning | MKX | 62 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.