Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 202, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 1, 2012, 2:59 PM CDT for 4 counties in Minnesota. It was in force for 31 min. 2 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
- Jul 1, 2012, 2:59 PM CDT (19:59 UTC)
- Expired
- Jul 1, 2012, 3:30 PM CDT
- In force
- 31 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Brown County, MN, Nicollet County, MN, Renville County, MN, Sibley County, MN
The radar
The Minneapolis radar (KMPX), 94 km from the middle of the area, began a volume at 19:59 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 |
|---|---|---|---|
| Jul 1, 3:05 PM CDT | HAIL 1.5 | 4 W St George, MN | LASTED FIVE MINUTES. |
| Jul 1, 3:10 PM CDT | HAIL 0.88 | 3 Wsw Gibbon, MN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.0 hours before the alert went out and 92 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
- 1200 J/kg
- Mixed-layer CIN
- -122 J/kg
- Mixed-layer LCL
- 1457 m above ground
- 0-6 km bulk shear
- 33 kt
- 0-1 km storm-relative helicity
- 57 m²/s²
- 0-3 km storm-relative helicity
- 62 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.4
The text
As transmitted, in the capitals the NWS used until 2016.
261 WUUS53 KMPX 011959 SVRMPX MNC015-103-129-143-012030- /O.NEW.KMPX.SV.W.0202.120701T1959Z-120701T2030Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 259 PM CDT SUN JUL 1 2012 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTH CENTRAL BROWN COUNTY IN SOUTH CENTRAL MINNESOTA... NORTHWESTERN NICOLLET COUNTY IN SOUTH CENTRAL MINNESOTA... EXTREME SOUTHEASTERN RENVILLE COUNTY IN CENTRAL MINNESOTA... SOUTHWESTERN SIBLEY COUNTY IN CENTRAL MINNESOTA... * UNTIL 330 PM CDT * AT 255 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR ST GEORGE...OR ABOUT 9 MILES NORTHWEST OF NEW ULM...AND MOVING NORTH AT 20 MPH. LOCATIONS IN THE WARNING INCLUDE... ST GEORGE... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4457 9473 4452 9448 4434 9455 4436 9467 TIME...MOT...LOC 1959Z 184DEG 19KT 4441 9461 WIND...HAIL 60MPH 1.00IN $$ CLF
1 follow-up statement
017 WWUS53 KMPX 012014 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 314 PM CDT SUN JUL 1 2012 MNC015-012030- /O.CAN.KMPX.SV.W.0202.000000T0000Z-120701T2030Z/ BROWN MN- 314 PM CDT SUN JUL 1 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL BROWN COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4438 9454 4441 9466 4457 9473 4452 9448 TIME...MOT...LOC 2015Z 184DEG 19KT 4447 9460 $$ MNC103-129-143-012030- /O.CON.KMPX.SV.W.0202.000000T0000Z-120701T2030Z/ NICOLLET MN-RENVILLE MN-SIBLEY MN- 314 PM CDT SUN JUL 1 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHWESTERN SIBLEY...EXTREME SOUTHEASTERN RENVILLE AND NORTHWESTERN NICOLLET COUNTIES UNTIL 330 PM CDT... AT 312 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR ST GEORGE...OR 12 MILES NORTHWEST OF NEW ULM...MOVING NORTH AT 20 MPH. LOCATIONS IMPACTED INCLUDE... MAINLY RURAL AREAS OF EXTREME SOUTHEASTERN RENVILLE AND SOUTHWESTERN SIBLEY COUNTIES. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. && LAT...LON 4438 9454 4441 9466 4457 9473 4452 9448 TIME...MOT...LOC 2015Z 184DEG 19KT 4447 9460 WIND...HAIL <50MPH 1.00IN $$ CLF
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 1, 2:38 PM CDT | Special Weather Statement | MPX | Martin | 52 min |
| Jul 1, 2:55 PM CDT | Special Weather Statement | MPX | Brown | 35 min |
| Jul 1, 3:54 PM CDT | Special Weather Statement | MPX | Sibley | 36 min |
| Jul 1, 4:02 PM CDT | Severe Thunderstorm Warning | MPX | Sibley | 28 min |
| Jul 1, 4:14 PM CDT | Heat Advisory | MPX | Anoka, Benton, Blue Earth, Brown, Carver, Chippewa and 36 more | 37 hr |
| Jul 1, 4:52 PM CDT | Special Weather Statement | MPX | Renville | 23 min |
| Jul 1, 5:14 PM CDT | Special Weather Statement | MPX | Renville | 31 min |
| Jul 1, 5:18 PM CDT | Severe Thunderstorm Warning | MPX | Renville | 27 min |
| Jul 1, 5:36 PM CDT | Special Weather Statement | MPX | Kanabec | 24 min |
| Jul 1, 5:47 PM CDT | Severe Thunderstorm Warning | MPX | Kanabec | 28 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.