Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 8, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Apr 3, 2011, 8:50 PM CDT for 4 counties in Wisconsin. It was in force for 25 min. 4 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
- Apr 3, 2011, 8:50 PM CDT (01:50 UTC)
- Expired
- Apr 3, 2011, 9:15 PM CDT
- In force
- 25 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
Counties Dane County, WI, Green County, WI, Iowa County, WI, Lafayette County, WI
The radar
The Milwaukee radar (KMKX), 109 km from the middle of the area, began a volume at 01:50 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 |
|---|---|---|---|
| Apr 3, 8:55 PM CDT | HAIL 1.75 | Nw Darlington, WI | GOLF BALL SIZE HAIL REPORTED BY LAFAYETTE COUNTY SHERIFF DEPUTY NORTHWEST OF DARLINGTON AND EAST OF BELMONT. |
| Apr 3, 9:20 PM CDT | HAIL 1.75 | 1 E Mount Horeb, WI | SPOTTER REPORTED HEARING GLASS BREAK NEARBY. EXTENT OF DAMAGE CURRENTLY UNKNOWN. |
| Apr 3, 9:23 PM CDT | HAIL 1.25 | N Mount Horeb, WI | |
| Apr 3, 9:25 PM CDT | HAIL 1.5 | Mount Horeb, WI |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Apr 3, 5:57 PM CDT | Tornado Watch | SPC | 6 hr |
The nearest sounding before it
Davenport, (KDVN), launched 00:00Z, 1.8 hours before the alert went out and 147 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
- 1790 J/kg
- Mixed-layer CIN
- -85 J/kg
- Mixed-layer LCL
- 1684 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 119 m²/s²
- 0-3 km storm-relative helicity
- 168 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.9
The text
As transmitted, in the capitals the NWS used until 2016.
614 WUUS53 KMKX 040150 SVRMKX WIC025-045-049-065-040215- /O.NEW.KMKX.SV.W.0008.110404T0150Z-110404T0215Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 850 PM CDT SUN APR 3 2011 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN DANE COUNTY IN SOUTH CENTRAL WISCONSIN... NORTHWESTERN GREEN COUNTY IN SOUTH CENTRAL WISCONSIN... SOUTHEASTERN IOWA COUNTY IN SOUTH CENTRAL WISCONSIN... NORTHEASTERN LAFAYETTE COUNTY IN SOUTH CENTRAL WISCONSIN... * UNTIL 915 PM CDT * AT 846 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING PING PONG BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR DARLINGTON...AND MOVING NORTHEAST AT 75 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... YELLOWSTONE LAKE STATE PARK AROUND 855 PM CDT. BLANCHARDVILLE AND ARGYLE AROUND 900 PM CDT. MOUNT HOREB AND NEW GLARUS AROUND 910 PM CDT. OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE YELLOWSTONE LAKE ST PARK...HOLLANDALE AND MOUNT VERNON. 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. && A TORNADO WATCH REMAINS IN EFFECT UNTIL MIDNIGHT CDT MONDAY MORNING FOR SOUTH CENTRAL WISCONSIN. LAT...LON 4307 8972 4279 8950 4261 9018 4277 9030 TIME...MOT...LOC 0150Z 241DEG 64KT 4274 9011 WIND...HAIL <50MPH 1.50IN $$ GEHRING
1 follow-up statement
970 WWUS53 KMKX 040211 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 911 PM CDT SUN APR 3 2011 WIC065-040221- /O.CAN.KMKX.SV.W.0008.000000T0000Z-110404T0215Z/ LAFAYETTE WI- 911 PM CDT SUN APR 3 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN LAFAYETTE COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4307 8972 4283 8954 4281 8994 4287 9000 TIME...MOT...LOC 0211Z 240DEG 45KT 4286 8986 $$ WIC025-045-049-040215- /O.CON.KMKX.SV.W.0008.000000T0000Z-110404T0215Z/ DANE WI-GREEN WI-IOWA WI- 911 PM CDT SUN APR 3 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN IOWA...NORTHWESTERN GREEN AND SOUTHWESTERN DANE COUNTIES UNTIL 915 PM CDT... AT 907 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING GOLF BALL SIZE HAIL. THIS STORM WAS LOCATED NEAR BLANCHARDVILLE...OR 13 MILES EAST OF MINERAL POINT...MOVING NORTHEAST AT 50 MPH. AT 856 PM...LAW ENFORCEMENT REPORTED GOLF BALL SIZE HAIL BETWEEN BELMONT AND DARLINGTON. THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF NORTHWESTERN GREEN...SOUTHEASTERN IOWA AND SOUTHWESTERN DANE COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS! && LAT...LON 4307 8972 4283 8954 4281 8994 4287 9000 TIME...MOT...LOC 0211Z 240DEG 45KT 4286 8986 WIND...HAIL <50MPH 1.75IN $$ WOOD
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 7:52 PM CDT | Severe Thunderstorm Warning | MKX | Iowa, Lafayette | 24 min |
| Apr 3, 8:17 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 43 min |
| Apr 3, 9:14 PM CDT | Severe Thunderstorm Warning | MKX | Dane | 46 min |
| Apr 3, 9:44 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Dodge, Jefferson | 46 min |
| Apr 3, 9:50 PM CDT | Severe Thunderstorm Warning | MKX | Lafayette | 25 min |
| Apr 3, 10:06 PM CDT | Severe Thunderstorm Warning | MKX | Green, Lafayette | 24 min |
| Apr 3, 10:09 PM CDT | Severe Thunderstorm Warning | MKX | Columbia, Dane, Sauk | 36 min |
| Apr 3, 10:18 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Fond du Lac | 42 min |
| Apr 3, 10:23 PM CDT | Severe Thunderstorm Warning | MKX | Dane, Green, Rock | 35 min |
| Apr 3, 10:36 PM CDT | Special Marine Warning | MKX | 99 min | |
| Apr 3, 10:45 PM CDT | Severe Thunderstorm Warning | MKX | Jefferson | 26 min |
| Apr 3, 11:04 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Washington | 41 min |
| Apr 3, 11:23 PM CDT | Severe Thunderstorm Warning | MKX | Ozaukee, Sheboygan, Washington | 52 min |
| Apr 3, 11:54 PM CDT | Severe Thunderstorm Warning | MKX | Sauk | 23 min |
| Apr 4, 3:48 AM CDT | Small Craft Advisory | MKX | 23 hr |
Nearby
Severe Thunderstorm Warnings in Wisconsin, 2011Every severe thunderstorm warning in 2011
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.