Alert archive / Minnesota / Tornado Warnings in 2012
Tornado Warning 10, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at Apr 21, 2012, 5:01 PM CDT for Martin County, Watonwan County, Minnesota. It was in force for 44 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
- Apr 21, 2012, 5:01 PM CDT (22:01 UTC)
- Expired
- Apr 21, 2012, 5:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
Counties Martin County, MN, Watonwan County, MN
The radar
The Minneapolis radar (KMPX), 150 km from the middle of the area, began a volume at 22:04 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 |
|---|---|---|---|
| Apr 21, 5:17 PM CDT | FUNNEL CLOUD | 7 Wnw Trimont, 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, 10.0 hours before the alert went out and 149 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 1566 m above ground
- 0-6 km bulk shear
- 44 kt
- 0-1 km storm-relative helicity
- 33 m²/s²
- 0-3 km storm-relative helicity
- 85 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
568
WFUS53 KMPX 212201
TORMPX
MNC091-165-212245-
/O.NEW.KMPX.TO.W.0010.120421T2201Z-120421T2245Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
501 PM CDT SAT APR 21 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN MARTIN COUNTY IN SOUTH CENTRAL MINNESOTA...
SOUTHWESTERN WATONWAN COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 545 PM CDT
* AT 500 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS 8 MILES WEST OF
ODIN...OR ABOUT 4 MILES SOUTH OF MOUNTAIN LAKE...AND MOVING
SOUTHEAST AT 20 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
ODIN...
ORMSBY...
TRIMONT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
WHEN A TORNADO WARNING IS ISSUED BASED ON RADAR...IT MEANS THAT
STRONG ROTATION HAS BEEN DETECTED IN THE STORM. A TORNADO MAY ALREADY
BE ON THE GROUND...OR IS EXPECTED TO DEVELOP SHORTLY.
&&
LAT...LON 4366 9480 4371 9487 4397 9487 4397 9486
4397 9485 4385 9459
TIME...MOT...LOC 2201Z 309DEG 19KT 4388 9490
$$3 follow-up statements
163
WWUS53 KMPX 212220
SVSMPX
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
520 PM CDT SAT APR 21 2012
MNC165-212235-
/O.CAN.KMPX.TO.W.0010.000000T0000Z-120421T2245Z/
WATONWAN MN-
520 PM CDT SAT APR 21 2012
...THE TORNADO WARNING FOR SOUTHWESTERN WATONWAN COUNTY IS
CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
LAT...LON 4366 9480 4371 9487 4385 9485 4385 9461
4384 9460
TIME...MOT...LOC 2220Z 320DEG 19KT 4379 9484
$$
MNC091-212245-
/O.CON.KMPX.TO.W.0010.000000T0000Z-120421T2245Z/
MARTIN MN-
520 PM CDT SAT APR 21 2012
...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN MARTIN COUNTY
UNTIL 545 PM CDT...
AT 518 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE
THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM
WAS LOCATED 7 MILES WEST OF TRIMONT...OR 14 MILES NORTHEAST OF
JACKSON...MOVING SOUTHEAST AT 20 MPH.
LOCATIONS IMPACTED INCLUDE...
TRIMONT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4366 9480 4371 9487 4385 9485 4385 9461
4384 9460
TIME...MOT...LOC 2220Z 320DEG 19KT 4379 9484
$$597 WWUS53 KMPX 212233 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 533 PM CDT SAT APR 21 2012 MNC091-212245- /O.CON.KMPX.TO.W.0010.000000T0000Z-120421T2245Z/ MARTIN MN- 533 PM CDT SAT APR 21 2012 ...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL MARTIN COUNTY UNTIL 545 PM CDT... AT 529 PM CDT...NATIONAL WEATHER SERVICE RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED ABOUT 5 MILES WEST OF TRIMONT...OR 13 MILES NORTHEAST OF JACKSON...MOVING SOUTHEAST AT 20 MPH. AT 517 PM...A FUNNEL CLOUD WAS REPORTED 8 MILES WEST...NORTHWEST OF TRIMONT. LOCATIONS IMPACTED INCLUDE... TRIMONT. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4380 9484 4380 9466 4366 9480 4371 9487 TIME...MOT...LOC 2231Z 320DEG 19KT 4375 9479 $$
905 WWUS53 KMPX 212244 SVSMPX SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN 544 PM CDT SAT APR 21 2012 MNC091-212258- /O.EXP.KMPX.TO.W.0010.000000T0000Z-120421T2245Z/ MARTIN MN- 544 PM CDT SAT APR 21 2012 ...THE TORNADO WARNING FOR WEST CENTRAL MARTIN COUNTY WILL EXPIRE AT 545 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS JUST MOVED OUT OF THE WARNED AREA...HOWEVER DIME SIZE HAIL AND WINDS TO 40 MPH ARE STILL POSSIBLE WITH THE THUNDERSTORM. LAT...LON 4380 9484 4380 9466 4366 9480 4371 9487 TIME...MOT...LOC 2243Z 320DEG 19KT 4370 9473 $$
The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 21, 1:50 PM CDT | Special Weather Statement | MPX | Stevens | 55 min |
| Apr 21, 2:04 PM CDT | Severe Thunderstorm Warning | MPX | Stevens | 14 min |
| Apr 21, 2:28 PM CDT | Special Weather Statement | MPX | Chippewa, Douglas, Pope, Redwood, Swift | 62 min |
| Apr 21, 3:22 PM CDT | Severe Thunderstorm Warning | MPX | Brown, Redwood | 38 min |
| Apr 21, 3:29 PM CDT | Tornado Warning | MPX | Chippewa, Swift | 46 min |
| Apr 21, 3:33 PM CDT | Tornado Warning | MPX | Redwood | 28 min |
| Apr 21, 4:09 PM CDT | Tornado Warning | MPX | Chippewa, Kandiyohi, Renville | 36 min |
| Apr 21, 4:21 PM CDT | Special Weather Statement | MPX | Pope | 39 min |
| Apr 21, 4:49 PM CDT | Special Weather Statement | MPX | Renville | 41 min |
| Apr 21, 5:53 PM CDT | Special Weather Statement | MPX | Martin | 37 min |
Nearby
Tornado Warnings in Minnesota, 2012Every tornado warning in 2012Tornadoes 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.