Alert archive / South Dakota / Tornado Warnings in 2011
Tornado Warning 28, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 30, 2011, 8:09 PM CDT for 4 counties in South Dakota. It was in force for 51 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 30, 2011, 8:09 PM CDT (01:09 UTC)
- Expired
- May 30, 2011, 9:00 PM CDT
- In force
- 51 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
Counties Brookings County, SD, Kingsbury County, SD, Lake County, SD, Miner County, SD
The radar
The Sioux Falls radar (KFSD), 94 km from the middle of the area, began a volume at 01:12 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 30, 8:12 PM CDT | TORNADO | 5 Ne Winfred, SD | REPORTED ON THE GROUND BY EMERGENCY MANAGER. |
| May 30, 8:22 PM CDT | TORNADO | 1 S Ramona, SD |
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 30, 2:08 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.2 hours before the alert went out and 112 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
- 1125 J/kg
- Mixed-layer CIN
- -258 J/kg
- Mixed-layer LCL
- 775 m above ground
- 0-6 km bulk shear
- 58 kt
- 0-1 km storm-relative helicity
- 90 m²/s²
- 0-3 km storm-relative helicity
- 174 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -1.0
The text
As transmitted, in the capitals the NWS used until 2016.
804 WFUS53 KFSD 310109 TORFSD SDC011-077-079-097-310200- /O.NEW.KFSD.TO.W.0028.110531T0109Z-110531T0200Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 809 PM CDT MON MAY 30 2011 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... WESTERN BROOKINGS COUNTY IN EAST CENTRAL SOUTH DAKOTA... EASTERN KINGSBURY COUNTY IN EAST CENTRAL SOUTH DAKOTA... NORTHWESTERN LAKE COUNTY IN EAST CENTRAL SOUTH DAKOTA... NORTHEASTERN MINER COUNTY IN EAST CENTRAL SOUTH DAKOTA... * UNTIL 900 PM CDT * AT 809 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 6 MILES NORTH OF WINFRED...OR 12 MILES NORTHWEST OF MADISON...AND MOVING NORTHEAST AT 50 MPH. * THIS TORNADIC STORM WILL BE NEAR... RAMONA AROUND 815 PM CDT... OLDHAM AND LAKE THOMPSON STATE RECREATION AREA AROUND 820 PM CDT... LAKE PRESTON AROUND 825 PM CDT... HETLAND AND SINAI AROUND 830 PM CDT... ARLINGTON AROUND 835 PM CDT... BADGER AROUND 840 PM CDT... BRUCE AROUND 845 PM CDT... 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 4454 9722 4454 9676 4397 9728 4417 9762 TIME...MOT...LOC 0109Z 210DEG 42KT 4410 9731 $$ CHAPMAN
4 follow-up statements
230 WWUS53 KFSD 310117 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 817 PM CDT MON MAY 30 2011 SDC011-077-079-097-310200- /O.CON.KFSD.TO.W.0028.000000T0000Z-110531T0200Z/ MINER SD-LAKE SD-KINGSBURY SD-BROOKINGS SD- 817 PM CDT MON MAY 30 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN BROOKINGS... EASTERN KINGSBURY...NORTHWESTERN LAKE AND NORTHEASTERN MINER COUNTIES UNTIL 900 PM CDT... AT 816 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A CONFIRMED TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR RAMONA... OR 12 MILES NORTHWEST OF MADISON...MOVING NORTHEAST AT 50 MPH. THIS DANGEROUS STORM WILL BE NEAR... LAKE THOMPSON STATE RECREATION AREA AROUND 825 PM CDT... SINAI AND LAKE PRESTON AROUND 830 PM CDT... ARLINGTON AND HETLAND AROUND 835 PM CDT... BADGER AROUND 840 PM CDT... BRUCE AROUND 850 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4454 9722 4454 9676 4397 9728 4417 9762 TIME...MOT...LOC 0116Z 210DEG 42KT 4416 9727 $$ CHAPMAN
972 WWUS53 KFSD 310128 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 828 PM CDT MON MAY 30 2011 SDC011-077-079-097-310200- /O.CON.KFSD.TO.W.0028.000000T0000Z-110531T0200Z/ MINER SD-LAKE SD-KINGSBURY SD-BROOKINGS SD- 828 PM CDT MON MAY 30 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN BROOKINGS... EASTERN KINGSBURY...NORTHWESTERN LAKE AND NORTHEASTERN MINER COUNTIES UNTIL 900 PM CDT... AT 827 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 6 MILES SOUTHWEST OF ARLINGTON...OR 20 MILES NORTH OF MADISON...MOVING NORTHEAST AT 50 MPH. AT 822 PM CDT...EMERGENCY MANAGEMENT REPORTED A TORNADO 1 MILE SOUTH OF RAMONA. THIS DANGEROUS STORM WILL BE NEAR... ARLINGTON AROUND 835 PM CDT... BADGER AROUND 840 PM CDT... BRUCE AROUND 845 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... TORNADOES ARE DIFFICULT TO SEE AT NIGHT. TAKE COVER NOW. && LAT...LON 4454 9722 4454 9676 4397 9728 4417 9762 TIME...MOT...LOC 0127Z 210DEG 42KT 4431 9718 $$ CHAPMAN
539 WWUS53 KFSD 310142 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 842 PM CDT MON MAY 30 2011 SDC011-077-079-097-310200- /O.CON.KFSD.TO.W.0028.000000T0000Z-110531T0200Z/ MINER SD-LAKE SD-KINGSBURY SD-BROOKINGS SD- 842 PM CDT MON MAY 30 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN BROOKINGS... EASTERN KINGSBURY...NORTHWESTERN LAKE AND NORTHEASTERN MINER COUNTIES UNTIL 900 PM CDT... AT 841 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR ARLINGTON...OR 17 MILES WEST OF BROOKINGS... MOVING NORTHEAST AT 45 MPH. THIS DANGEROUS STORM WILL BE NEAR... RURAL AREAS EAST OF BADGER AROUND 845 PM CDT... RURAL AREAS NORTHWEST OF BRUCE AROUND 850 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... TORNADOES ARE DIFFICULT TO SEE AT NIGHT. TAKE COVER NOW. && LAT...LON 4454 9722 4454 9676 4397 9728 4417 9762 TIME...MOT...LOC 0141Z 211DEG 38KT 4440 9709 $$ CHAPMAN
251 WWUS53 KFSD 310200 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 900 PM CDT MON MAY 30 2011 SDC011-077-079-097-310210- /O.EXP.KFSD.TO.W.0028.000000T0000Z-110531T0200Z/ MINER SD-LAKE SD-KINGSBURY SD-BROOKINGS SD- 900 PM CDT MON MAY 30 2011 ...THE TORNADO WARNING FOR WESTERN BROOKINGS...EASTERN KINGSBURY... NORTHWESTERN LAKE AND NORTHEASTERN MINER COUNTIES HAS EXPIRED... THE TORNADO THREAT HAS DIMINISHED...THEREFORE THE TORNADO WARNING HAS EXPIRED. HOWEVER...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR PORTIONS OF BROOKINGS...MOODY AND LAKE COUNTIES. GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. IN ADDITION...A TORNADO WATCH REMAINS IN EFFECT UNTIL 2 AM CDT. LAT...LON 4454 9722 4454 9676 4397 9728 4417 9762 TIME...MOT...LOC 0142Z 211DEG 38KT 4441 9708 $$ CHAPMAN
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 7:05 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson | 40 min |
| May 30, 7:21 PM CDT | Tornado Warning | FSD | Douglas, Hutchinson | 24 min |
| May 30, 7:29 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Hutchinson | 46 min |
| May 30, 7:42 PM CDT | Tornado Warning | FSD | Hanson, Hutchinson, McCook | 33 min |
| May 30, 8:05 PM CDT | Tornado Warning | FSD | Lake, McCook, Minnehaha | 25 min |
| May 30, 8:46 PM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, Moody | 44 min |
| May 31, 3:48 AM CDT | Wind Advisory | FSD | Aurora, Beadle, Brookings, Brule, Davison, Hanson and 8 more | 15 hr |
| May 31, 10:10 AM CDT | River Flood Warning | FSD | Union | 86 days |
| May 31, 10:41 AM CDT | River Flood Warning | FSD | Turner | 24 hr |
| May 31, 10:41 AM CDT | River Flood Warning | FSD | Clay | 24 hr |
Nearby
Tornado Warnings in South Dakota, 2011Every tornado warning in 2011Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.