Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 274, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Aug 23, 2012, 9:02 PM CDT for Carver County, Hennepin County, Scott County, Minnesota. It was in force for 23 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 23, 2012, 9:02 PM CDT (02:02 UTC)
- Expired
- Aug 23, 2012, 9:25 PM CDT
- In force
- 23 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 65.0 mph
Counties Carver County, MN, Hennepin County, MN, Scott County, MN
The radar
The Minneapolis radar (KMPX), 16 km from the middle of the area, began a volume at 02:03 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
Minneapolis, MN (KMPX), launched 00:00Z, 2.0 hours before the alert went out and 18 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
- 1357 J/kg
- Mixed-layer CIN
- -65 J/kg
- Mixed-layer LCL
- 1842 m above ground
- 0-6 km bulk shear
- 25 kt
- 0-1 km storm-relative helicity
- 105 m²/s²
- 0-3 km storm-relative helicity
- 223 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 8.5
The text
As transmitted, in the capitals the NWS used until 2016.
249
WUUS53 KMPX 240202
SVRMPX
MNC019-053-139-240245-
/O.NEW.KMPX.SV.W.0274.120824T0202Z-120824T0245Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
902 PM CDT THU AUG 23 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
EAST CENTRAL CARVER COUNTY IN EAST CENTRAL MINNESOTA...
SOUTHERN HENNEPIN COUNTY IN EAST CENTRAL MINNESOTA...
NORTHEASTERN SCOTT COUNTY IN EAST CENTRAL MINNESOTA...
* UNTIL 945 PM CDT
* AT 858 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING QUARTER SIZE HAIL AND DAMAGING WINDS OF 65 MPH. THIS
STORM WAS LOCATED NEAR WACONIA...OR ABOUT 26 MILES WEST OF
BURNSVILLE...AND MOVING EAST AT 35 MPH.
LOCATIONS IN THE WARNING INCLUDE...
MINNEAPOLIS...
EXCELSIOR...
MINNETONKA...
EDEN PRAIRIE...
THE LAKE MINNETONKA AREA...
PLYMOUTH...
ST LOUIS PARK...
BLOOMINGTON...
TWIN CITIES AIRPORT...
VICTORIA...
CARVER...
MOUND...
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 4475 9368 4503 9369 4506 9328 4504 9328
4503 9321 4491 9320 4487 9318 4481 9326
4479 9333 4476 9333
TIME...MOT...LOC 0202Z 259DEG 31KT 4486 9374
WIND...HAIL 65MPH 1.00IN
$$
JRB2 follow-up statements
331
WWUS53 KMPX 240219
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
919 PM CDT THU AUG 23 2012
MNC019-053-139-240245-
/O.CON.KMPX.SV.W.0274.000000T0000Z-120824T0245Z/
CARVER MN-HENNEPIN MN-SCOTT MN-
919 PM CDT THU AUG 23 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTH CENTRAL
SCOTT...SOUTHERN HENNEPIN AND EAST CENTRAL CARVER COUNTIES UNTIL 945
PM CDT...
AT 916 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING
WINDS OF 60 MPH. THIS STORM WAS LOCATED 5 MILES WEST OF EDEN
PRAIRIE...OR 14 MILES WEST OF BURNSVILLE...MOVING EAST AT 35 MPH.
LOCATIONS IMPACTED INCLUDE...
MINNEAPOLIS...MINNETONKA...EDEN PRAIRIE...THE LAKE MINNETONKA
AREA...PLYMOUTH...ST LOUIS PARK...BLOOMINGTON...TWIN CITIES
AIRPORT...DEEPHAVEN...SHAKOPEE...WOODLAND...WAYZATA...HOPKINS...
MEDICINE LAKE AND EDINA.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER
HOUR...LARGE HAIL...AND DEADLY LIGHTNING. FOR YOUR PROTECTION MOVE TO
AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS.
&&
LAT...LON 4475 9368 4503 9369 4506 9328 4504 9328
4503 9321 4491 9320 4487 9318 4481 9326
4479 9333 4476 9333
TIME...MOT...LOC 0219Z 259DEG 31KT 4483 9352
WIND...HAIL 60MPH 1.00IN
$$
JRB541
WWUS53 KMPX 240225
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
925 PM CDT THU AUG 23 2012
MNC019-053-139-240238-
/O.CAN.KMPX.SV.W.0274.000000T0000Z-120824T0245Z/
CARVER MN-HENNEPIN MN-SCOTT MN-
925 PM CDT THU AUG 23 2012
...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL SCOTT...SOUTHERN
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 HEAVY RAIN IS STILL POSSIBLE WITH THIS
THUNDERSTORM.
LAT...LON 4475 9368 4503 9369 4506 9328 4504 9328
4503 9321 4491 9320 4487 9318 4481 9326
4479 9333 4476 9333
TIME...MOT...LOC 0223Z 259DEG 31KT 4477 9346
$$
JRBThe office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 7:02 PM CDT | Special Weather Statement | MPX | Wright | 28 min |
| Aug 23, 7:08 PM CDT | Special Weather Statement | MPX | Redwood | 52 min |
| Aug 23, 7:12 PM CDT | Severe Thunderstorm Warning | MPX | Wright | 33 min |
| Aug 23, 7:46 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Wright | 44 min |
| Aug 23, 7:53 PM CDT | Severe Thunderstorm Warning | MPX | Renville, Sibley | 37 min |
| Aug 23, 8:07 PM CDT | Severe Thunderstorm Warning | MPX | McLeod, Sibley | 38 min |
| Aug 23, 8:37 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, McLeod, Sibley | 38 min |
| Aug 23, 8:47 PM CDT | Areal Flood Advisory | MPX | Carver, Hennepin, McLeod, Wright | 3 hr |
| Aug 23, 8:49 PM CDT | Tornado Warning | MPX | Carver | 14 min |
| Aug 23, 9:00 PM CDT | Special Weather Statement | MPX | Carver, Dakota, Hennepin, Ramsey, Scott, Washington and 1 more | 90 min |
| Aug 23, 9:32 PM CDT | Areal Flood Advisory | MPX | Carver, Dakota, Hennepin, Ramsey, Scott | 3 hr |
| Aug 23, 10:33 PM CDT | Flash Flood Warning | MPX | Carver, Wright | 2 hr |
| Aug 23, 10:43 PM CDT | Special Weather Statement | MPX | Scott | 47 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.