Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2011

Severe Thunderstorm Warning 99, NWS Milwaukee, WI

June 30, 2011Kenosha County, Racine County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 30, 2011, 7:51 PM CDT for Kenosha County, Racine County, Wisconsin. It was in force for 39 min. 3 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 30, 2011, 7:51 PM CDT (00:51 UTC)
Expired: Jun 30, 2011, 8:30 PM CDT
In force: 39 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 70.0 mph

Counties Kenosha County, WI, Racine County, WI

The radar

The Milwaukee radar (KMKX), 71 km from the middle of the area, began a volume at 00:51 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 30, 8:00 PM CDT	TSTM WND GST 75	Kenosha, WI	SEVERE TREE DAMAGE AND POWER POLES SNAPPED. TIME ESTIMATED.
Jun 30, 8:06 PM CDT	TSTM WND DMG	Kenosha, WI	SEVERAL LARGE UPROOTED TREES REPORTED NEAR THE LAKESHORE IN KENOSHA
Jun 30, 8:40 PM CDT	MARINE TSTM WIND 63	Kenosha, WI	ALSO A MEASURED WIND GUST OF 59 MPH AT 820 PM

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 00:00Z, 0.9 hours before the alert went out and 205 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 32 J/kg
Mixed-layer CIN: -539 J/kg
Mixed-layer LCL: 1357 m above ground
0-6 km bulk shear: 63 kt
0-1 km storm-relative helicity: 144 m²/s²
0-3 km storm-relative helicity: 290 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 6.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

798 
WUUS53 KMKX 010051
SVRMKX
WIC059-101-010130-
/O.NEW.KMKX.SV.W.0099.110701T0051Z-110701T0130Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
751 PM CDT THU JUN 30 2011

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  EASTERN KENOSHA COUNTY IN SOUTHEAST WISCONSIN...
  EAST CENTRAL RACINE COUNTY IN SOUTHEAST WISCONSIN...

* UNTIL 830 PM CDT

* AT 747 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 8 MILES EAST OF WIND
  POINT...OR 10 MILES NORTHEAST OF DOWNTOWN RACINE...AND MOVING SOUTH
  AT 30 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  DOWNTOWN RACINE AROUND 800 PM CDT.
  DOWNTOWN KENOSHA AROUND 820 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 4276 8776 4271 8776 4267 8779 4266 8780
      4262 8781 4250 8780 4249 8781 4249 8788
      4250 8791 4283 8780 4278 8774
TIME...MOT...LOC 0051Z 011DEG 28KT 4276 8761
WIND...HAIL 70MPH <.75IN

$$

KUHLMAN

2 follow-up statements

393 
WWUS53 KMKX 010112
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
812 PM CDT THU JUN 30 2011

WIC101-010122-
/O.CAN.KMKX.SV.W.0099.000000T0000Z-110701T0130Z/
RACINE WI-
812 PM CDT THU JUN 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL RACINE COUNTY IS
CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED 
AREA.

LAT...LON 4267 8785 4267 8780 4262 8781 4250 8780
      4249 8781 4249 8788 4250 8791 4265 8786
TIME...MOT...LOC 0112Z 011DEG 29KT 4257 8767

$$

WIC059-010130-
/O.CON.KMKX.SV.W.0099.000000T0000Z-110701T0130Z/
KENOSHA WI-
812 PM CDT THU JUN 30 2011

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EASTERN
KENOSHA COUNTY UNTIL 830 PM CDT...

AT 809 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 8 MILES EAST OF DOWNTOWN
KENOSHA...MOVING SOUTH AT 35 MPH.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF EASTERN
KENOSHA COUNTY.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

THIS STORM HAS A HISTORY OF PRODUCING WIDESPREAD WIND DAMAGE ACROSS 
EASTERN RACINE AND EASTERN KENOSHA COUNTIES. THIS IS AN EXTREMELY 
DANGEROUS SITUATION. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND 
STAY AWAY FROM WINDOWS!

&&

LAT...LON 4267 8785 4267 8780 4262 8781 4250 8780
      4249 8781 4249 8788 4250 8791 4265 8786
TIME...MOT...LOC 0112Z 011DEG 29KT 4257 8767
WIND...HAIL 70MPH <.75IN

$$

KUHLMAN

510 
WWUS53 KMKX 010126
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
826 PM CDT THU JUN 30 2011

WIC059-010136-
/O.EXP.KMKX.SV.W.0099.000000T0000Z-110701T0130Z/
KENOSHA WI-
826 PM CDT THU JUN 30 2011

...THE SEVERE THUNDERSTORM WARNING FOR EASTERN KENOSHA COUNTY WILL
EXPIRE AT 830 PM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.

LAT...LON 4267 8785 4267 8780 4262 8781 4250 8780
      4249 8781 4249 8788 4250 8791 4265 8786
TIME...MOT...LOC 0126Z 011DEG 29KT 4246 8770

$$

KUHLMAN

The office that day

Everything else NWS Milwaukee, WI issued on the same UTC day.

Issued	Product	Office	Lasted
Jun 30, 7:40 PM CDT	Special Marine Warning	MKX	59 min
Jun 30, 7:57 PM CDT	Special Marine Warning	MKX	63 min
Jul 1, 11:23 AM CDT	Small Craft Advisory	MKX	12 hr
Jul 1, 2:32 PM CDT	Special Marine Warning	MKX	88 min

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2011 Every 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.