Alert archive / South Dakota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 52, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at May 8, 2011, 10:50 PM CDT for Beadle County, Jerauld County, South Dakota. It was in force for 40 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 8, 2011, 10:50 PM CDT (03:50 UTC)
- Expired
- May 8, 2011, 11:30 PM CDT
- In force
- 40 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Beadle County, SD, Jerauld County, SD
The radar
The Aberdeen radar (KABR), 123 km from the middle of the area, began a volume at 03:51 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
Aberdeen, SD (KABR), launched 00:00Z, 3.8 hours before the alert went out and 62 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
- 1839 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 156 m²/s²
- 0-3 km storm-relative helicity
- 413 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.1
The text
As transmitted, in the capitals the NWS used until 2016.
186 WUUS53 KFSD 090350 SVRFSD SDC005-073-090430- /O.NEW.KFSD.SV.W.0052.110509T0350Z-110509T0430Z/ BULLETIN - IMMEDIATE BROADCAST REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 1050 PM CDT SUN MAY 8 2011 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... SOUTHWESTERN BEADLE COUNTY IN EAST CENTRAL SOUTH DAKOTA... NORTH CENTRAL JERAULD COUNTY IN EAST CENTRAL SOUTH DAKOTA... * UNTIL 1130 PM CDT * AT 1049 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 8 MILES NORTH OF WESSINGTON SPRINGS...OR 20 MILES SOUTHWEST OF HURON...AND MOVING NORTH AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... VIRGIL AROUND 1105 PM CDT... WOLSEY AROUND 1130 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT MONDAY MORNING FOR SOUTHEASTERN SOUTH DAKOTA. LAT...LON 4448 9869 4447 9839 4416 9843 4418 9869 TIME...MOT...LOC 0349Z 180DEG 18KT 4422 9855 WIND...HAIL 60MPH 1.00IN $$ HANKO
2 follow-up statements
541 WWUS53 KFSD 090408 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1108 PM CDT SUN MAY 8 2011 SDC073-090418- /O.CAN.KFSD.SV.W.0052.000000T0000Z-110509T0430Z/ JERAULD SD- 1108 PM CDT SUN MAY 8 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTH CENTRAL JERAULD COUNTY IS CANCELLED... THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED AREA. LAT...LON 4428 9869 4448 9869 4447 9839 4426 9842 TIME...MOT...LOC 0408Z 180DEG 18KT 4434 9855 $$ SDC005-090430- /O.CON.KFSD.SV.W.0052.000000T0000Z-110509T0430Z/ BEADLE SD- 1108 PM CDT SUN MAY 8 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR WEST CENTRAL BEADLE COUNTY UNTIL 1130 PM CDT... AT 1108 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES NORTHWEST OF VIRGIL...OR 17 MILES WEST OF HURON... MOVING NORTH AT 20 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... WOLSEY AROUND 1125 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT FOR THE WARNED AREA. TORNADOES CAN DEVELOP QUICKLY FROM SEVERE THUNDERSTORMS. ALTHOUGH NOT IMMEDIATELY LIKELY...IF A TORNADO IS SPOTTED ACT QUICKLY AND MOVE TO A PLACE OF SAFETY INSIDE A STURDY STRUCTURE...SUCH AS A BASEMENT OR SMALL INTERIOR ROOM. SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && LAT...LON 4428 9869 4448 9869 4447 9839 4426 9842 TIME...MOT...LOC 0408Z 180DEG 18KT 4434 9855 WIND...HAIL 60MPH 1.00IN $$ HANKO
386 WWUS53 KFSD 090426 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 1126 PM CDT SUN MAY 8 2011 SDC005-090436- /O.EXP.KFSD.SV.W.0052.000000T0000Z-110509T0430Z/ BEADLE SD- 1126 PM CDT SUN MAY 8 2011 ...THE SEVERE THUNDERSTORM WARNING FOR WEST CENTRAL BEADLE COUNTY WILL EXPIRE AT 1130 PM CDT... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF THE WARNED AREA. LAT...LON 4428 9869 4448 9869 4447 9839 4426 9842 TIME...MOT...LOC 0426Z 180DEG 18KT 4443 9855 $$ HANKO
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 8, 9:11 PM CDT | River Flood Warning | FSD | Union | 12 hr |
| May 8, 10:15 PM CDT | Severe Thunderstorm Warning | FSD | Beadle, Sanborn | 45 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2011Every severe thunderstorm warning in 2011
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.