Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 141, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jun 10, 2012, 9:29 PM CDT for 4 counties in Minnesota; Polk County, Saint Croix County, Wisconsin. It was in force for 61 min. 1 report 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
- Jun 10, 2012, 9:29 PM CDT (02:29 UTC)
- Expired
- Jun 10, 2012, 10:30 PM CDT
- In force
- 61 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 0.75 in
- Wind
- 65.0 mph
Counties Anoka County, MN, Chisago County, MN, Isanti County, MN, Washington County, MN, Polk County, WI, Saint Croix County, WI
The radar
The Minneapolis radar (KMPX), 102 km from the middle of the area, began a volume at 02:32 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 |
|---|---|---|---|
| Jun 10, 9:45 PM CDT | TSTM WND DMG | Osceola, WI | POWER POLES DOWN. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jun 10, 3:03 PM CDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 00:00Z, 2.5 hours before the alert went out and 104 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
- 282 J/kg
- Mixed-layer CIN
- -40 J/kg
- Mixed-layer LCL
- 2269 m above ground
- 0-6 km bulk shear
- 31 kt
- 0-1 km storm-relative helicity
- 178 m²/s²
- 0-3 km storm-relative helicity
- 273 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.2
The text
As transmitted, in the capitals the NWS used until 2016.
366
WUUS53 KMPX 110229
SVRMPX
MNC003-025-059-163-WIC095-109-110330-
/O.NEW.KMPX.SV.W.0141.120611T0229Z-120611T0330Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
929 PM CDT SUN JUN 10 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN ANOKA COUNTY IN EAST CENTRAL MINNESOTA...
CHISAGO COUNTY IN EAST CENTRAL MINNESOTA...
SOUTHEASTERN ISANTI COUNTY IN EAST CENTRAL MINNESOTA...
NORTHERN WASHINGTON COUNTY IN EAST CENTRAL MINNESOTA...
POLK COUNTY IN NORTHWEST WISCONSIN...
NORTHWESTERN ST. CROIX COUNTY IN WEST CENTRAL WISCONSIN...
* UNTIL 1030 PM CDT
* AT 927 PM CDT...RADAR INDICATED A LINE OF SEVERE THUNDERSTORMS...
CAPABLE OF PRODUCING DAMAGING WINDS OF 65 MPH. THESE STORMS WERE
LOCATED ALONG A LINE EXTENDING FROM WYOMING TO MARINE ON ST CROIX
TO BAYPORT...AND MOVING NORTHEAST AT 55 MPH.
LOCATIONS IN THE WARNING INCLUDE...
FOREST LAKE...
NORTH BRANCH...
NEW RICHMOND...
AMERY...
BALSAM LAKE...
WYOMING...
BAYPORT...
BURKHARDT...
STILLWATER...
HUDSON...
LAKELAND...
LAKE ELMO...
MARINE ON ST CROIX...
SCANDIA...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR
DAMAGING WINDS IN EXCESS OF 60 MPH. SEEK SHELTER NOW INSIDE A STURDY
STRUCTURE AND STAY AWAY FROM WINDOWS.
&&
LAT...LON 4572 9215 4536 9215 4494 9264 4492 9295
4512 9290 4533 9319 4573 9311 4573 9286
4565 9287 4565 9254 4574 9252 4574 9216
TIME...MOT...LOC 0229Z 217DEG 46KT 4536 9296 4523 9278
4506 9273
WIND...HAIL 65MPH <.75IN
$$
JPC2 follow-up statements
162
WWUS53 KMPX 110252
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
952 PM CDT SUN JUN 10 2012
MNC003-059-110307-
/O.CAN.KMPX.SV.W.0141.000000T0000Z-120611T0330Z/
ANOKA MN-ISANTI MN-
952 PM CDT SUN JUN 10 2012
...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN ISANTI AND
NORTHEASTERN ANOKA COUNTIES IS CANCELLED...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE MOVED OUT OF THE
WARNED AREA.
LAT...LON 4573 9216 4535 9216 4505 9251 4512 9289
4516 9296 4531 9302 4555 9303 4556 9308
4573 9311 4573 9286 4565 9287 4565 9254
4574 9252
TIME...MOT...LOC 0252Z 220DEG 51KT 4569 9286 4555 9256
4534 9243
$$
MNC025-163-WIC095-109-110330-
/O.CON.KMPX.SV.W.0141.000000T0000Z-120611T0330Z/
CHISAGO MN-WASHINGTON MN-ST. CROIX WI-POLK WI-
952 PM CDT SUN JUN 10 2012
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR POLK...
NORTHWESTERN ST. CROIX...NORTHERN WASHINGTON AND CHISAGO COUNTIES
UNTIL 1030 PM CDT...
AT 950 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A LINE OF
SEVERE THUNDERSTORMS CAPABLE OF PRODUCING DAMAGING WINDS OF 65 MPH.
THESE STORMS WERE LOCATED ALONG A LINE EXTENDING FROM RUSH CITY TO
CUSHING TO WANDEROOS...MOVING NORTHEAST AT 60 MPH.
LOCATIONS IMPACTED INCLUDE...
BALSAM LAKE...MILLTOWN...LUCK...RANGE...FREDERIC...LEWIS...CLAM
FALLS...MCKINLEY AND JOEL.
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 4573 9216 4535 9216 4505 9251 4512 9289
4516 9296 4531 9302 4555 9303 4556 9308
4573 9311 4573 9286 4565 9287 4565 9254
4574 9252
TIME...MOT...LOC 0252Z 220DEG 51KT 4569 9286 4555 9256
4534 9243
WIND...HAIL 60MPH <.75IN
$$
JPC747
WWUS53 KMPX 110325
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
1025 PM CDT SUN JUN 10 2012
MNC025-163-WIC095-109-110340-
/O.EXP.KMPX.SV.W.0141.000000T0000Z-120611T0330Z/
CHISAGO MN-WASHINGTON MN-ST. CROIX WI-POLK WI-
1025 PM CDT SUN JUN 10 2012
...THE SEVERE THUNDERSTORM WARNING FOR POLK...NORTHWESTERN ST.
CROIX...NORTHERN WASHINGTON AND CHISAGO COUNTIES WILL EXPIRE AT 1030
PM CDT...
THE LINE OF STORMS WHICH PROMPTED THE WARNING HAVE WEAKENED BELOW
SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR
PROPERTY...HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THESE
THUNDERSTORMS.
LAT...LON 4573 9216 4535 9216 4505 9251 4512 9289
4516 9296 4531 9302 4555 9303 4556 9308
4573 9311 4573 9286 4565 9287 4565 9254
4574 9252
TIME...MOT...LOC 0325Z 220DEG 51KT 4603 9239 4589 9210
4568 9197
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 7:07 PM CDT | Special Weather Statement | MPX | Le Sueur, Nicollet, Scott, Sibley | 53 min |
| Jun 10, 7:35 PM CDT | Special Weather Statement | MPX | Anoka, Chisago, Hennepin, Isanti, Kanabec, Ramsey | 55 min |
| Jun 10, 7:35 PM CDT | Severe Thunderstorm Warning | MPX | Blue Earth, Le Sueur, Nicollet | 40 min |
| Jun 10, 7:41 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Hennepin, Scott | 49 min |
| Jun 10, 7:54 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Hennepin, Isanti | 36 min |
| Jun 10, 7:55 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Nicollet, Scott, Sibley | 50 min |
| Jun 10, 7:59 PM CDT | Severe Thunderstorm Warning | MPX | Carver, McLeod, Wright | 46 min |
| Jun 10, 8:18 PM CDT | Tornado Warning | MPX | Carver, Le Sueur, Scott, Sibley | 42 min |
| Jun 10, 8:29 PM CDT | Severe Thunderstorm Warning | MPX | Le Sueur, Scott, Steele | 45 min |
| Jun 10, 8:32 PM CDT | Severe Thunderstorm Warning | MPX | Anoka, Chisago, Hennepin, Isanti, Ramsey, Washington | 58 min |
| Jun 10, 8:39 PM CDT | Severe Thunderstorm Warning | MPX | Carver, Sibley | 36 min |
| Jun 10, 8:42 PM CDT | Severe Thunderstorm Warning | MPX | Dakota, Rice | 63 min |
| Jun 10, 8:48 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn, Steele, Waseca | 36 min |
| Jun 10, 8:50 PM CDT | Special Weather Statement | MPX | Isanti | 40 min |
Nearby
Severe Thunderstorm Warnings in Minnesota, 2012Severe 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.