Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 231, NWS Twin Cities, MN
NWS Twin Cities, MN issued this severe thunderstorm warning at Jul 13, 2012, 7:50 PM CDT for Steele County, Minnesota. It was in force for 25 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
- Jul 13, 2012, 7:50 PM CDT (00:50 UTC)
- Expired
- Jul 13, 2012, 8:15 PM CDT
- In force
- 25 min
- Issued by
- NWS Twin Cities, MN
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 50.0 mph
County Steele County, MN
The radar
The Minneapolis radar (KMPX), 86 km from the middle of the area, began a volume at 00:53 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, 0.8 hours before the alert went out and 88 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
- 286 J/kg
- Mixed-layer CIN
- -125 J/kg
- Mixed-layer LCL
- 1653 m above ground
- 0-6 km bulk shear
- 19 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 137 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
678
WUUS53 KMPX 140050
SVRMPX
MNC147-140115-
/O.NEW.KMPX.SV.W.0231.120714T0050Z-120714T0115Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE TWIN CITIES/CHANHASSEN MN
750 PM CDT FRI JUL 13 2012
THE NATIONAL WEATHER SERVICE IN THE TWIN CITIES HAS ISSUED A
* SEVERE THUNDERSTORM WARNING FOR...
NORTHEASTERN STEELE COUNTY IN SOUTH CENTRAL MINNESOTA...
* UNTIL 815 PM CDT
* AT 748 PM CDT...RADAR INDICATED A SEVERE THUNDERSTORM...CAPABLE OF
PRODUCING QUARTER SIZE HAIL AND STRONG STRAIGHT LINE WINDS TO 50
MPH. THIS STORM WAS LOCATED NEAR MEDFORD... OR ABOUT 6 MILES
NORTHEAST OF OWATONNA...AND MOVING SOUTHEAST AT 20 MPH.
LOCATIONS IN THE WARNING INCLUDE...
MAINLY RURAL AREAS OF NORTHEASTERN STEELE COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
IF YOU ARE IN THE PATH OF THIS STORM...PREPARE IMMEDIATELY FOR LARGE
HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM
WINDOWS.
&&
LAT...LON 4411 9323 4420 9319 4420 9304 4419 9304
4409 9304 4409 9305
TIME...MOT...LOC 0050Z 295DEG 16KT 4415 9314
WIND...HAIL <50MPH 1.00IN
$$The office that day
Everything else NWS Twin Cities, MN issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 13, 7:12 PM CDT | Special Weather Statement | MPX | Faribault | 48 min |
| Jul 13, 7:16 PM CDT | Special Weather Statement | MPX | Steele | 44 min |
| Jul 13, 7:36 PM CDT | Severe Thunderstorm Warning | MPX | Faribault, Freeborn | 24 min |
| Jul 13, 7:57 PM CDT | Special Weather Statement | MPX | Freeborn | 48 min |
| Jul 13, 8:16 PM CDT | Severe Thunderstorm Warning | MPX | Freeborn | 31 min |
| Jul 13, 8:29 PM CDT | Severe Thunderstorm Warning | MPX | Steele | 31 min |
| Jul 13, 8:53 PM CDT | Special Weather Statement | MPX | Steele | 37 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.