Alert archive / Minnesota / Tornado Warnings in 2012
Tornado Warning 20, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 4, 2012, 2:58 PM CDT for Jackson County, Minnesota. It was in force for 32 min. 2 reports 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
- May 4, 2012, 2:58 PM CDT (19:58 UTC)
- Expired
- May 4, 2012, 3:30 PM CDT
- In force
- 32 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
County Jackson County, MN
The radar
The Sioux Falls radar (KFSD), 139 km from the middle of the area, began a volume at 20:02 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 |
|---|---|---|---|
| May 4, 3:05 PM CDT | TORNADO | 5 Se Lakefield, MN | BRIEF TOUCHDOWN |
| May 4, 3:27 PM CDT | HAIL 0.88 | 5 Nne Jackson, MN |
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 |
|---|---|---|---|
| May 4, 2:00 PM CDT | Severe Thunderstorm Watch | SPC | 9 hr |
The nearest sounding before it
Minneapolis, MN (KMPX), launched 12:00Z, 8.0 hours before the alert went out and 182 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.
387
WFUS53 KFSD 041958
TORFSD
MNC063-042030-
/O.NEW.KFSD.TO.W.0020.120504T1958Z-120504T2030Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
258 PM CDT FRI MAY 4 2012
THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A
* TORNADO WARNING FOR...
SOUTHEASTERN JACKSON COUNTY IN SOUTHWEST MINNESOTA...
* UNTIL 330 PM CDT
* AT 258 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE
TRACKING A SEVERE THUNDERSTORM WITH A HISTORY OF PRODUCING A
TORNADO. THIS TORNADIC STORM WAS LOCATED NEAR LAKEFIELD...OR 9
MILES WEST OF JACKSON...AND MOVING EAST AT 30 MPH.
* THIS TORNADIC STORM WILL BE NEAR...
JACKSON AROUND 310 PM CDT...
WINDS IN EXCESS OF 60 MPH AND GOLF BALL SIZE HAIL ARE ALSO POSSIBLE
WITH THIS STORM.
OTHER LOCATIONS IMPACTED BY THIS TORNADIC THUNDERSTORM INCLUDE ALPHA.
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 4350 9486 4351 9506 4357 9529 4367 9529
4370 9485 4351 9485
TIME...MOT...LOC 1958Z 273DEG 26KT 4361 9511
$$
SCHUMACHER1 follow-up statement
550
WWUS53 KFSD 042024
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
324 PM CDT FRI MAY 4 2012
MNC063-042034-
/O.EXP.KFSD.TO.W.0020.000000T0000Z-120504T2030Z/
JACKSON MN-
324 PM CDT FRI MAY 4 2012
...THE TORNADO WARNING FOR SOUTHEASTERN JACKSON COUNTY WILL EXPIRE AT
330 PM CDT...
THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS
EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT
FOR THE AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A SEVERE
THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 9 PM CDT.
LAT...LON 4350 9486 4351 9506 4357 9529 4367 9529
4370 9485 4351 9485
TIME...MOT...LOC 2024Z 273DEG 26KT 4360 9485
$$
SCHUMACHERThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 1:43 PM CDT | Severe Thunderstorm Warning | FSD | Murray, Nobles | 47 min |
| May 4, 2:06 PM CDT | Tornado Warning | FSD | Jackson, Nobles | 24 min |
| May 4, 2:18 PM CDT | Tornado Warning | FSD | Jackson, Nobles | 27 min |
| May 4, 2:24 PM CDT | Tornado Warning | FSD | Jackson | 36 min |
| May 4, 2:43 PM CDT | Severe Thunderstorm Warning | FSD | Cottonwood, Jackson | 32 min |
| May 4, 3:06 PM CDT | Severe Thunderstorm Warning | FSD | Jackson | 24 min |
| May 4, 3:23 PM CDT | Severe Thunderstorm Warning | FSD | Jackson | 37 min |
| May 4, 3:48 PM CDT | Flash Flood Warning | FSD | Jackson, Nobles | 5 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.