Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 241, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 1, 2012, 8:48 PM CDT for Carver County, Hennepin County, Scott County, Minnesota. It was in force for 20 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
- Aug 1, 2012, 8:48 PM CDT (01:48 UTC)
- Expired
- Aug 1, 2012, 9:08 PM CDT
- In force
- 20 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.88 in
- Wind
- 60.0 mph
Counties Carver County, MN, Hennepin County, MN, Scott County, MN
The radar
The Minneapolis radar (KMPX), 3 km from the middle of the area, began a volume at 01:48 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Aug 1, 5:12 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 1.8 hours before the alert went out and 6 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
- 2247 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1724 m above ground
- 0-6 km bulk shear
- 18 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 101 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.9
The text
As transmitted, in the capitals the NWS used until 2016.
140 WUUS53 KMPX 020148 SVRMPX MNC019-053-139-020230- /O.NEW.KMPX.SV.W.0241.120802T0148Z-120802T0230Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 848 PM CDT WED AUG 1 2012 THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN CARVER COUNTY IN EAST CENTRAL MINNESOTA... SOUTH CENTRAL HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA... NORTH CENTRAL SCOTT COUNTY IN EAST CENTRAL MINNESOTA... * UNTIL 930 PM CDT * AT 843 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF PRODUCING DAMAGING WINDS OF 60 MPH. THIS STORM WAS LOCATED NEAR COLOGNE...OR ABOUT 22 MILES SOUTHWEST OF PLYMOUTH...AND MOVING EAST AT 25 MPH. NICKEL SIZE HAIL MAY ALSO ACCOMPANY THESE DAMAGING WINDS. LOCATIONS IN THE WARNING INCLUDE... CARVER... VICTORIA... CHASKA... SHOREWOOD... CHANHASSEN... SHAKOPEE... DEEPHAVEN... MINNETONKA... EDEN PRAIRIE... EDINA... HOPKINS... PRECAUTIONARY/PREPAREDNESS ACTIONS... IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR DAMAGING WINDS IN EXCESS OF 60 MPH AND HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS. && LAT...LON 4497 9338 4481 9332 4470 9376 4486 9379 TIME...MOT...LOC 0148Z 256DEG 21KT 4479 9372 WIND...HAIL 60MPH 0.88IN $$
1 follow-up statement
048 WWUS53 KMPX 020208 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 908 PM CDT WED AUG 1 2012 MNC019-053-139-020223- /O.CAN.KMPX.SV.W.0241.000000T0000Z-120802T0230Z/ CARVER MN-HENNEPIN MN-SCOTT MN- 908 PM CDT WED AUG 1 2012 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SCOTT...SOUTH CENTRAL HENNEPIN AND EAST CENTRAL CARVER COUNTIES IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY...HOWEVER GUSTY WINDS TO 45 MPH ARE STILL POSSIBLE WITH THIS THUNDERSTORM. LAT...LON 4497 9338 4481 9332 4470 9376 4486 9379 TIME...MOT...LOC 0208Z 256DEG 21KT 4482 9356 $$ LS
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 1, 7:08 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Renville, Sibley | 37 min |
| Aug 1, 7:44 PM CDT | Special Weather Statement | MPX | Blue Earth, Nicollet, Sibley, Watonwan | 61 min |
| Aug 1, 9:19 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Goodhue, Rice | 41 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.