Alert archive / Wisconsin / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 3, NWS Milwaukee, WI
NWS Milwaukee, WI issued this severe thunderstorm warning at Mar 17, 2012, 5:42 AM CDT for Rock County, Wisconsin. It was in force for 33 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, 5:42 AM CDT (10:42 UTC)
- Expired
- Mar 17, 2012, 6:15 AM CDT
- In force
- 33 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), 58 km from the middle of the area, began a volume at 10:42 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, 10.7 hours before the alert went out and 163 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.
318 WUUS53 KMKX 171042 SVRMKX WIC105-171115- /O.NEW.KMKX.SV.W.0003.120317T1042Z-120317T1115Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 542 AM CDT SAT MAR 17 2012 THE NATIONAL WEATHER SERVICE IN SULLIVAN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... CENTRAL ROCK COUNTY IN SOUTH CENTRAL WISCONSIN... * UNTIL 615 AM CDT * AT 542 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR ORFORDVILLE...OR 8 MILES EAST OF BRODHEAD... AND MOVING NORTHEAST AT 25 MPH. * LOCATIONS IMPACTED INCLUDE... DOWNTOWN JANESVILLE...FOOTVILLE AND HANOVER. 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 4279 8910 4268 8898 4257 8925 4262 8931 TIME...MOT...LOC 1043Z 233DEG 24KT 4264 8921 WIND...HAIL <50MPH 1.00IN $$ DDV
2 follow-up statements
574 WWUS53 KMKX 171103 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 603 AM CDT SAT MAR 17 2012 WIC105-171115- /O.CON.KMKX.SV.W.0003.000000T0000Z-120317T1115Z/ ROCK WI- 603 AM CDT SAT MAR 17 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR CENTRAL ROCK COUNTY UNTIL 615 AM CDT... AT 558 AM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR JANESVILLE...MOVING NORTHEAST AT 30 MPH. LOCATIONS IMPACTED INCLUDE... JANESVILLE. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND LIGHTNING. PEOPLE OUTSIDE SHOULD MOVE TO A SHELTER...PREFERABLY INSIDE A STRONG BUILDING AND AWAY FROM WINDOWS. && LAT...LON 4263 8916 4267 8921 4279 8910 4268 8898 TIME...MOT...LOC 1102Z 233DEG 24KT 4272 8907 WIND...HAIL <50MPH 1.00IN $$ DDV
843 WWUS53 KMKX 171113 SVSMKX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE MILWAUKEE/SULLIVAN WI 613 AM CDT SAT MAR 17 2012 WIC105-171123- /O.EXP.KMKX.SV.W.0003.000000T0000Z-120317T1115Z/ ROCK WI- 613 AM CDT SAT MAR 17 2012 ...THE SEVERE THUNDERSTORM WARNING FOR CENTRAL ROCK COUNTY WILL EXPIRE AT 615 AM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. LAT...LON 4263 8916 4267 8921 4279 8910 4268 8898 TIME...MOT...LOC 1113Z 233DEG 24KT 4276 8899 $$ DDV
The office that day
Everything else NWS Milwaukee, WI issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 17, 6:36 AM CDT | Severe Thunderstorm Warning | MKX | Rock | 24 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.