Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 4, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Mar 17, 2012, 6:36 AM CDT for Rock County, Wisconsin. It was in force for 24 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
- Mar 17, 2012, 6:36 AM CDT (11:36 UTC)
- Expired
- Mar 17, 2012, 7:00 AM CDT
- In force
- 24 min
- Issued by
- NWS Milwaukee, WI
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Rock County, WI
The radar
The Milwaukee radar (KMKX), 45 km from the middle of the area, began a volume at 11:36 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
Davenport, (KDVN), launched 00:00Z, 11.6 hours before the alert went out and 175 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
- 1555 J/kg
- Mixed-layer CIN
- -14 J/kg
- Mixed-layer LCL
- 1453 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- -6 m²/s²
- 0-3 km storm-relative helicity
- 40 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
443
WUUS53 KMKX 171136
SVRMKX
WIC105-171200-
/O.NEW.KMKX.SV.W.0004.120317T1136Z-120317T1200Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI
636 AM CDT SAT MAR 17 2012
THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL ROCK COUNTY IN SOUTH CENTRAL WISCONSIN...
* UNTIL 700 AM CDT
* AT 632 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS
STORM WAS LOCATED NEAR JANESVILLE AIRPORT...OR 5 MILES SOUTHEAST OF
DOWNTOWN JANESVILLE...AND MOVING NORTHEAST AT 20 MPH.
* LOCATIONS IMPACTED INCLUDE...
AVALON...EMERALD GROVE AND JOHNSTOWN CENTER.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE
TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM
WINDOWS.
&&
LAT...LON 4257 8896 4262 8903 4279 8885 4270 8878
4265 8878
TIME...MOT...LOC 1136Z 228DEG 18KT 4263 8894
WIND...HAIL <50MPH 1.00IN
$$
DDV2 follow-up statements
931 WWUS53 KMKX 171152 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 652 AM CDT SAT MAR 17 2012 WIC105-171200- /O.CON.KMKX.SV.W.0004.000000T0000Z-120317T1200Z/ ROCK WI- 652 AM CDT SAT MAR 17 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR EAST CENTRAL ROCK COUNTY UNTIL 700 AM CDT... AT 649 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 6 MILES EAST OF DOWNTOWN JANESVILLE...MOVING NORTHEAST AT 20 MPH. LOCATIONS IMPACTED INCLUDE... JOHNSTOWN CENTER. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4266 8890 4269 8896 4279 8885 4270 8878 TIME...MOT...LOC 1152Z 218DEG 18KT 4270 8888 WIND...HAIL <50MPH 1.00IN $$ DDV
117 WWUS53 KMKX 171202 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 702 AM CDT SAT MAR 17 2012 WIC105-171212- /O.EXP.KMKX.SV.W.0004.000000T0000Z-120317T1200Z/ ROCK WI- 702 AM CDT SAT MAR 17 2012 ...THE SEVERE THUNDERSTORM WARNING FOR EAST CENTRAL ROCK COUNTY HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. HOWEVER SMALL HAIL IS STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4266 8890 4269 8896 4279 8885 4270 8878 TIME...MOT...LOC 1152Z 218DEG 18KT 4270 8888 $$ DDV
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 5:42 AM CDT | Severe Thunderstorm Warning | MKX | Rock | 33 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.