Alert archive / Minnesota / Tornado Warnings in 2012
Tornado Warning 25, NWS Twin Cities, MN
NWS Twin Cities, MN issued this tornado warning at May 4, 2012, 6:21 PM CDT for Freeborn County, Minnesota. It was in force for 24 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
- May 4, 2012, 6:21 PM CDT (23:21 UTC)
- Expired
- May 4, 2012, 6:45 PM CDT
- In force
- 24 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
County Freeborn County, MN
The radar
The Minneapolis radar (KMPX), 129 km from the middle of the area, began a volume at 23:21 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 |
|---|---|---|---|
| May 4, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 11.4 hours before the alert went out and 129 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
- 1101 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- -52 m²/s²
- 0-3 km storm-relative helicity
- 15 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
431
WFUS53 KMPX 042321
TORMPX
MNC047-042345-
/O.NEW.KMPX.TO.W.0025.120504T2321Z-120504T2345Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
621 PM CDT FRI MAY 4 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* TORNADO WARNING FOR...
NORTHWESTERN FREEBORN COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 645 PM CDT
* AT 617 PM CDT...RADAR INDICATED A STORM CAPABLE OF PRODUCING A
TORNADO. THE MOST DANGEROUS PART OF THE STORM WAS NEAR ALDEN...OR
OVER ALDEN...AND MOVING NORTHEAST AT 25 MPH.
* LOCATIONS IN THE WARNING INCLUDE...
CONGER...
ALDEN...
FREEBORN...
MANCHESTER...
CLARKS GROVE...
MANSFIELD...
HARTLAND...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
THIS STORM PRODUCED A TORNADO NEAR KIESTER AT 603 PM.
&&
LAT...LON 4354 9360 4358 9365 4385 9364 4385 9330
4377 9320
TIME...MOT...LOC 2321Z 227DEG 20KT 4367 9358
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 3, 7:00 PM CDT | Special Weather Statement | MPX | Goodhue | 30 min |
| May 4, 2:07 PM CDT | Special Weather Statement | MPX | Redwood | 38 min |
| May 4, 2:33 PM CDT | Special Weather Statement | MPX | Blue Earth, Martin, Watonwan | 57 min |
| May 4, 3:10 PM CDT | Tornado Warning | MPX | Martin | 35 min |
| May 4, 3:40 PM CDT | Tornado Warning | MPX | Martin | 50 min |
| May 4, 4:07 PM CDT | Special Weather Statement | MPX | Blue Earth, Waseca, Watonwan | 38 min |
| May 4, 4:22 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Martin | 38 min |
| May 4, 4:32 PM CDT | Severe Thunderstorm Warning | MPX | Martin | 13 min |
| May 4, 5:00 PM CDT | Special Weather Statement | MPX | Faribault | 45 min |
| May 4, 5:41 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn | 49 min |
| May 4, 5:52 PM CDT | Tornado Warning | MPX | Faribault, Freeborn | 23 min |
| May 4, 6:15 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn | 45 min |
| May 4, 6:24 PM CDT | Areal Flood Advisory | MPX | Blue Earth, Faribault, Martin, Watonwan | 3 hr |
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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.