Alert archive / Minnesota / Severe Thunderstorm Warnings in 2012
Severe Thunderstorm Warning 199, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Aug 23, 2012, 6:59 PM CDT for Lyon County, Minnesota. It was in force for 24 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
- Aug 23, 2012, 6:59 PM CDT (23:59 UTC)
- Expired
- Aug 23, 2012, 7:23 PM CDT
- In force
- 24 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 58.0 mph
County Lyon County, MN
The radar
The Sioux Falls radar (KFSD), 112 km from the middle of the area, began a volume at 00:03 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 |
|---|---|---|---|
| Aug 23, 7:02 PM CDT | HAIL 1 | 10 S Marshall, 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, 12.0 hours before the alert went out and 179 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
- 2118 m above ground
- 0-6 km bulk shear
- 26 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 158 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
395 WUUS53 KFSD 232359 SVRFSD MNC083-240045- /O.NEW.KFSD.SV.W.0199.120823T2359Z-120824T0045Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 659 PM CDT THU AUG 23 2012 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHEASTERN LYON COUNTY IN SOUTHWEST MINNESOTA... * UNTIL 745 PM CDT * AT 659 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED NEAR BALATON...OR 12 MILES SOUTH OF MARSHALL...AND MOVING EAST AT 10 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... TRACY AROUND 745 PM CDT... OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE GARVIN. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS! && LAT...LON 4435 9560 4420 9560 4421 9590 4435 9593 TIME...MOT...LOC 2359Z 280DEG 9KT 4428 9580 WIND...HAIL <58MPH 1.00IN $$ CHAPMAN
2 follow-up statements
436 WWUS53 KFSD 240016 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 716 PM CDT THU AUG 23 2012 MNC083-240045- /O.CON.KFSD.SV.W.0199.000000T0000Z-120824T0045Z/ LYON MN- 716 PM CDT THU AUG 23 2012 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR SOUTHEASTERN LYON COUNTY UNTIL 745 PM CDT... AT 716 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL. THIS STORM WAS LOCATED 5 MILES NORTHEAST OF BALATON...OR 13 MILES SOUTH OF MARSHALL...MOVING EAST AT 10 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... TRACY AROUND 745 PM CDT... AT 650 PM CDT...GOLF BALL SIZE HAIL WAS REPORTED 5 MILES OF RUSSELL. PRECAUTIONARY/PREPAREDNESS ACTIONS... THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. SEEK SHELTER NOW INSIDE A STURDY STRUCTURE AND STAY AWAY FROM WINDOWS! && LAT...LON 4432 9560 4420 9560 4423 9581 4432 9587 TIME...MOT...LOC 0014Z 280DEG 9KT 4427 9578 WIND...HAIL <58MPH 1.00IN $$ CHAPMAN
701 WWUS53 KFSD 240023 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 723 PM CDT THU AUG 23 2012 MNC083-240034- /O.CAN.KFSD.SV.W.0199.000000T0000Z-120824T0045Z/ LYON MN- 723 PM CDT THU AUG 23 2012 ...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN LYON COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN SIOUX FALLS. LAT...LON 4432 9560 4420 9560 4423 9581 4432 9587 TIME...MOT...LOC 0024Z 280DEG 9KT 4427 9575 $$ CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 23, 5:47 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 43 min |
| Aug 23, 6:25 PM CDT | Severe Thunderstorm Warning | FSD | Lyon | 35 min |
| Aug 23, 6:36 PM CDT | Severe Thunderstorm Warning | FSD | Nobles, Rock | 39 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.