Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 91, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 21, 2011, 2:42 PM CDT for 5 counties in Wisconsin. It was in force for 33 min. 9 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
- Jun 21, 2011, 2:42 PM CDT (19:42 UTC)
- Expired
- Jun 21, 2011, 3:15 PM CDT
- In force
- 33 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Dodge County, WI, Jefferson County, WI, Walworth County, WI, Washington County, WI, Waukesha County, WI
The radar
The Milwaukee radar (KMKX), 17 km from the middle of the area, began a volume at 19:46 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 |
|---|---|---|---|
| Jun 21, 2:52 PM CDT | TSTM WND DMG | 3 W Dousman, WI | POWER LINES DOWN...LARGE TREE DOWN ON FENCING...INTERSECTION HWY 18 AND HWY BB...DELAYED REPORT...TIME ESTIMATED FROM RADAR |
| Jun 21, 2:54 PM CDT | TSTM WND GST 62 | 2 Se Eagle, WI | REPORTED TREE DAMAGE |
| Jun 21, 3:00 PM CDT | TSTM WND DMG | 2 Se Palmyra, WI | MULTIPLE TREE BRANCHES IN EXCESS OF ONE FOOT DIAMETER REPORTED DOWN |
| Jun 21, 3:00 PM CDT | TSTM WND DMG | 3 S Dousman, WI | TREE DOWN ON KETTLE MORAINE GOLF COURSE GROUNDS. TIME ESTIMATED FROM TIME OF OTHER DAMAGE REPORTS IN THE AREA. |
| Jun 21, 3:00 PM CDT | TSTM WND DMG | 4 Nw Eagle, WI | NUMEROUS TREES DOWN ALONG HIGHWAY CI IN THE BEAVER DAM LAKE AREA. TIME ESTIMATED FROM TIME OF OTHER DAMAGE REPORTS FROM THE AREA. |
| Jun 21, 3:00 PM CDT | TSTM WND DMG | Dousman, WI | DOWNBURST SWATH FROM DOUSMAN AREA NORTHEAST THROUGH CHENEQUA AND STONE BANK...UP TO HOLY HILL AREA. ESTIMATED TIMES FROM 3 PM TO 318 PM. WFO MKX 88-D RADAR INDICATED 126 MPH WINDS AROUND 350 FT ABOVE GROUND LEVEL IN THE DOUSMAN AREA. REPORTS OF A ROOF OFF OF A |
| Jun 21, 3:07 PM CDT | TSTM WND DMG | 3 Se Oconomowoc, WI | MANY TREES REPORTED DOWN...VISIBILITY LESS THAN QUARTER MILE |
| Jun 21, 3:10 PM CDT | TSTM WND DMG | 1 Se Stone Bank, WI | MULTIPLE LARGE TREES DOWN...INCLUDING ONE ON A HOUSE AND ONE THAT CRUSHED A CAR. WIND DAMAGE IN THE VICINITY OF OAKLAND ROAD...NORTH OF STATE HWY 16 AND COUNTY RD C. TIME ESTIMATED FROM RADAR. |
| Jun 21, 3:14 PM CDT | TSTM WND GST 79 | 3 Se Eagle, WI | REPORTED TREES DOWN...POWER OUT |
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 |
|---|---|---|---|
| Jun 21, 2:11 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Green Bay/Straub, WI (KGRB), launched 12:00Z, 7.7 hours before the alert went out and 155 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
- 56 J/kg
- Mixed-layer CIN
- -282 J/kg
- Mixed-layer LCL
- 464 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 168 m²/s²
- 0-3 km storm-relative helicity
- 261 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.8
The text
As transmitted, in the capitals the NWS used until 2016.
035 WUUS53 KMKX 211942 SVRMKX WIC027-055-127-131-133-212015- /O.NEW.KMKX.SV.W.0091.110621T1942Z-110621T2015Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 242 PM CDT TUE JUN 21 2011 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN DODGE COUNTY IN SOUTHEAST WISCONSIN... EASTERN JEFFERSON COUNTY IN SOUTHEAST WISCONSIN... NORTHERN WALWORTH COUNTY IN SOUTHEAST WISCONSIN... SOUTHWESTERN WASHINGTON COUNTY IN SOUTHEAST WISCONSIN... WESTERN WAUKESHA COUNTY IN SOUTHEAST WISCONSIN... * UNTIL 315 PM CDT * AT 237 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 7 MILES NORTHWEST OF ELKHORN... AND MOVING NORTH AT 60 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS. * THE SEVERE THUNDERSTORM WILL BE NEAR... NORTH PRAIRIE AROUND 250 PM CDT. DOUSMAN...LAPHAM PEAK STATE PARK AND WALES AROUND 255 PM CDT. OKAUCHEE LAKE...DELAFIELD AND HARTLAND AROUND 300 PM CDT. MERTON AROUND 305 PM CDT. HUSTISFORD...IRON RIDGE AND HARTFORD AROUND 315 PM CDT. OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE HEBRON...NWS SULLIVAN/MILWAUKEE...ROME...SULLIVAN...OCONOMOWOC LAKE...OCONOMOWOC...PIPERSVILLE...IXONIA...LAC LA BELLE AND MONTEREY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR PART OF THE WARNED AREA. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED...ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4345 8869 4337 8818 4265 8845 4269 8873 TIME...MOT...LOC 1942Z 185DEG 53KT 4283 8858 WIND...HAIL 60MPH 0.88IN $$ DAVIS
2 follow-up statements
895 WWUS53 KMKX 211955 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 255 PM CDT TUE JUN 21 2011 WIC127-212005- /O.CAN.KMKX.SV.W.0091.000000T0000Z-110621T2015Z/ WALWORTH WI- 255 PM CDT TUE JUN 21 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHERN WALWORTH COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4292 8866 4345 8869 4337 8818 4288 8837 TIME...MOT...LOC 1955Z 185DEG 53KT 4302 8856 $$ WIC027-055-131-133-212015- /O.CON.KMKX.SV.W.0091.000000T0000Z-110621T2015Z/ DODGE WI-JEFFERSON WI-WAUKESHA WI-WASHINGTON WI- 255 PM CDT TUE JUN 21 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN WASHINGTON...WESTERN WAUKESHA...EASTERN JEFFERSON AND SOUTHEASTERN DODGE COUNTIES UNTIL 315 PM CDT... AT 250 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR PALMYRA...OR 10 MILES SOUTHWEST OF WALES...MOVING NORTH AT 60 MPH. THIS STORM PRODUCED A MEASURED WIND GUST OF 62 MPH 2 MILES SOUTHEAST OF EAGLE. THE SEVERE THUNDERSTORM WILL BE NEAR... OKAUCHEE LAKE...DELAFIELD AND HARTLAND AROUND 300 PM CDT. MERTON AROUND 305 PM CDT. HUSTISFORD...IRON RIDGE AND HARTFORD AROUND 315 PM CDT. OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE OCONOMOWOC LAKE...OCONOMOWOC...PIPERSVILLE...IXONIA...LAC LA BELLE... MONTEREY...MAPLETON...ASHIPPUN...LEBANON AND NEOSHO. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4292 8866 4345 8869 4337 8818 4288 8837 TIME...MOT...LOC 1955Z 185DEG 53KT 4302 8856 WIND...HAIL 70MPH <.75IN $$ MRC
414 WWUS53 KMKX 212002 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 302 PM CDT TUE JUN 21 2011 WIC027-055-131-133-212015- /O.CON.KMKX.SV.W.0091.000000T0000Z-110621T2015Z/ DODGE WI-JEFFERSON WI-WAUKESHA WI-WASHINGTON WI- 302 PM CDT TUE JUN 21 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN WASHINGTON...WESTERN WAUKESHA...EASTERN JEFFERSON AND SOUTHEASTERN DODGE COUNTIES UNTIL 315 PM CDT... AT 300 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING DESTRUCTIVE WINDS IN EXCESS OF 70 MPH. THIS STORM WAS LOCATED NEAR DOUSMAN...OR NEAR DELAFIELD...MOVING NORTH AT 50 MPH. IN ADDITION...AT 254 PM CDT 62 MPH WIND GUSTS WERE REPORTED 2 MILES SOUTHEAST OF EAGLE WITH THIS STORM. THE SEVERE THUNDERSTORM WILL BE NEAR... MERTON AROUND 310 PM CDT. HARTFORD AND SLINGER AROUND 315 PM CDT. OTHER LOCATIONS IMPACTED BY THE SEVERE THUNDERSTORM INCLUDE CHENEQUA...MONTEREY...NORTH LAKE...MAPLETON...STONE BANK...ASHIPPUN AND HOLY HILL. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. && LAT...LON 4292 8866 4345 8869 4337 8818 4288 8837 TIME...MOT...LOC 2002Z 197DEG 44KT 4307 8845 WIND...HAIL 70MPH <.75IN $$ SEARS
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 20, 8:10 PM CDT | Dense Fog Advisory | MKX | Kenosha, Milwaukee, Ozaukee, Racine, Sheboygan, Washington and 1 more | 16 hr |
| Jun 21, 1:40 AM CDT | Areal Flood Advisory | MKX | Waukesha | 3 hr |
| Jun 21, 12:05 PM CDT | Dense Fog Advisory | MKX | Ozaukee, Sheboygan | 10 hr |
| Jun 21, 2:38 PM CDT | Special Marine Warning | MKX | 82 min | |
| Jun 21, 2:45 PM CDT | Tornado Warning | MKX | Marquette | 30 min |
| Jun 21, 3:06 PM CDT | Tornado Warning | MKX | Green Lake, Marquette | 24 min |
| Jun 21, 3:10 PM CDT | Severe Thunderstorm Warning | MKX | Dodge, Milwaukee, Ozaukee, Washington, Waukesha | 50 min |
| Jun 21, 3:14 PM CDT | Tornado Warning | MKX | Dodge, Fond du Lac, Green Lake | 31 min |
| Jun 21, 3:24 PM CDT | Areal Flood Advisory | MKX | Green Lake, Marquette | 3 hr |
| Jun 21, 3:27 PM CDT | Tornado Warning | MKX | Green Lake, Marquette | 33 min |
| Jun 21, 3:41 PM CDT | Marine Dense Fog Advisory | MKX | 6 hr | |
| Jun 21, 3:42 PM CDT | Areal Flood Advisory | MKX | Milwaukee, Ozaukee, Washington, Waukesha | 3 hr |
| Jun 21, 3:44 PM CDT | Tornado Warning | MKX | Fond du Lac, Green Lake | 31 min |
| Jun 21, 3:47 PM CDT | Severe Thunderstorm Warning | MKX | Fond du Lac, Ozaukee, Sheboygan, Washington | 43 min |
| Jun 21, 3:48 PM CDT | Special Marine Warning | MKX | 62 min | |
| Jun 21, 3:59 PM CDT | Tornado Warning | MKX | Green Lake | 31 min |
| Jun 21, 4:49 PM CDT | Special Marine Warning | MKX | 40 min | |
| Jun 21, 6:57 PM CDT | Severe Thunderstorm Warning | MKX | Kenosha, Racine | 33 min |
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.