Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012

Severe Thunderstorm Warning 40, NWS Milwaukee, WI

June 16, 2012Milwaukee County, Ozaukee County, Wisconsin

NWS Milwaukee, WI issued this severe thunderstorm warning at Jun 16, 2012, 11:29 PM CDT for Milwaukee County, Ozaukee County, Wisconsin. It was in force for 16 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Jun 16, 2012, 11:29 PM CDT (04:29 UTC)
Expired: Jun 16, 2012, 11:45 PM CDT
In force: 16 min
Issued by: NWS Milwaukee, WI
Area: Storm-based polygon
Hail: 0.75 in
Wind: 60.0 mph

Counties Milwaukee County, WI, Ozaukee County, WI

The radar

The Milwaukee radar (KMKX), 57 km from the middle of the area, began a volume at 04:31 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.

The nearest sounding before it

Green Bay/Straub, WI (KGRB), launched 00:00Z, 4.5 hours before the alert went out and 145 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: 613 J/kg
Mixed-layer CIN: -23 J/kg
Mixed-layer LCL: 721 m above ground
0-6 km bulk shear: 43 kt
0-1 km storm-relative helicity: 197 m²/s²
0-3 km storm-relative helicity: 200 m²/s²
Significant tornado parameter: 0.6
Supercell composite: 4.7

Open this sounding in Storm Lab

The text

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

809 
WUUS53 KMKX 170429
SVRMKX
WIC079-089-170500-
/O.NEW.KMKX.SV.W.0040.120617T0429Z-120617T0500Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1129 PM CDT SAT JUN 16 2012

THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHERN MILWAUKEE COUNTY IN SOUTHEAST WISCONSIN...
  SOUTHWESTERN OZAUKEE COUNTY IN SOUTHEAST WISCONSIN...

* UNTIL MIDNIGHT CDT

* AT 1127 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 MILWAUKEE TIMMERMAN
  AIRPORT...OR NEAR BROWN DEER...AND MOVING NORTHEAST AT 30 MPH.
  PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

* LOCATIONS IMPACTED INCLUDE...
  BROWN DEER...GLENDALE...MEQUON...THIENSVILLE...FOX POINT...BAYSIDE
  AND RIVER HILLS.

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 4314 8789 4312 8789 4306 8807 4320 8807
      4330 8789 4326 8791 4324 8791 4322 8789
      4320 8789 4318 8788 4316 8788
TIME...MOT...LOC 0428Z 239DEG 26KT 4314 8800
WIND...HAIL 60MPH 0.75IN

$$
MBK

2 follow-up statements

044 
WWUS53 KMKX 170437
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1137 PM CDT SAT JUN 16 2012

WIC079-089-170500-
/O.CON.KMKX.SV.W.0040.000000T0000Z-120617T0500Z/
MILWAUKEE WI-OZAUKEE WI-
1137 PM CDT SAT JUN 16 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN
OZAUKEE AND NORTHERN MILWAUKEE COUNTIES UNTIL MIDNIGHT CDT...

AT 1136 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 BROWN DEER...MOVING NORTHEAST AT
20 MPH. PENNY SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS.

LOCATIONS IMPACTED INCLUDE...
  MEQUON...FOX POINT...THIENSVILLE...BAYSIDE AND RIVER HILLS.

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 4314 8789 4312 8789 4309 8802 4320 8805
      4330 8789 4326 8791 4324 8791 4322 8789
      4320 8789 4318 8788 4316 8788
TIME...MOT...LOC 0437Z 233DEG 19KT 4318 8796
WIND...HAIL 60MPH 0.75IN

$$
MBK

449 
WWUS53 KMKX 170445
SVSMKX

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
1145 PM CDT SAT JUN 16 2012

WIC079-089-170455-
/O.CAN.KMKX.SV.W.0040.000000T0000Z-120617T0500Z/
MILWAUKEE WI-OZAUKEE WI-
1145 PM CDT SAT JUN 16 2012

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHWESTERN OZAUKEE AND
NORTHERN MILWAUKEE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OVER THE 
NEARSHORE WATERS OF LAKE MICHIGAN. 

LAT...LON 4314 8789 4312 8789 4309 8802 4320 8805
      4330 8789 4326 8791 4324 8791 4322 8789
      4320 8789 4318 8788 4316 8788
TIME...MOT...LOC 0445Z 235DEG 34KT 4323 8782

$$
MBK

The office that day

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

Issued	Product	Office	Lasted
Jun 16, 11:35 PM CDT	Special Marine Warning	MKX	40 min
Jun 17, 12:01 AM CDT	Special Marine Warning	MKX	59 min
Jun 17, 10:07 AM CDT	Small Craft Advisory	MKX	36 hr

Nearby

Severe Thunderstorm Warnings in Wisconsin, 2012 Every 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.