Alert archive / South Dakota / Tornado Warnings in 2011
Tornado Warning 23, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 30, 2011, 6:26 PM CDT for 4 counties in South Dakota. It was in force for 34 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
- May 30, 2011, 6:26 PM CDT (23:26 UTC)
- Expired
- May 30, 2011, 7:00 PM CDT
- In force
- 34 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
Counties Bon Homme County, SD, Charles Mix County, SD, Douglas County, SD, Hutchinson County, SD
The radar
The Sioux Falls radar (KFSD), 104 km from the middle of the area, began a volume at 23:26 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, 6:40 PM CDT | TSTM WND GST 60 | 4 Ese Delmont, 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 12:00Z, 11.4 hours before the alert went out and 178 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
- 485 m above ground
- 0-6 km bulk shear
- 70 kt
- 0-1 km storm-relative helicity
- 758 m²/s²
- 0-3 km storm-relative helicity
- 711 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.5
The text
As transmitted, in the capitals the NWS used until 2016.
344 WFUS53 KFSD 302326 TORFSD SDC009-023-043-067-310000- /O.NEW.KFSD.TO.W.0023.110530T2326Z-110531T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 626 PM CDT MON MAY 30 2011 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN BON HOMME COUNTY IN SOUTHEAST SOUTH DAKOTA... EAST CENTRAL CHARLES MIX COUNTY IN SOUTH CENTRAL SOUTH DAKOTA... SOUTHEASTERN DOUGLAS COUNTY IN SOUTH CENTRAL SOUTH DAKOTA... WESTERN HUTCHINSON COUNTY IN SOUTHEAST SOUTH DAKOTA... * UNTIL 700 PM CDT * AT 626 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES NORTH OF DANTE...OR 20 MILES EAST OF LAKE ANDES...AND MOVING NORTHEAST AT 45 MPH. * THIS TORNADIC STORM WILL BE NEAR... TRIPP AROUND 635 PM CDT... PARKSTON AROUND 645 PM CDT... THIS STORM HAS HAD MULTIPLE REPORTS OF A ROTATING WALL CLOUD AS WELL AS A FEW FUNNELS. 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 9795 4338 9763 4302 9801 4326 9831 TIME...MOT...LOC 2326Z 225DEG 40KT 4318 9808 $$ WEISSER
3 follow-up statements
705 WWUS53 KFSD 302332 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 632 PM CDT MON MAY 30 2011 SDC009-023-043-067-310000- /O.CON.KFSD.TO.W.0023.000000T0000Z-110531T0000Z/ HUTCHINSON SD-DOUGLAS SD-CHARLES MIX SD-BON HOMME SD- 632 PM CDT MON MAY 30 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR NORTHWESTERN BON HOMME... EAST CENTRAL CHARLES MIX...SOUTHEASTERN DOUGLAS AND WESTERN HUTCHINSON COUNTIES UNTIL 700 PM CDT... AT 631 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 6 MILES WEST OF TRIPP...OR 23 MILES EAST OF LAKE ANDES...MOVING NORTHEAST AT 35 MPH. THIS DANGEROUS STORM WILL BE NEAR... TRIPP AROUND 640 PM CDT... PARKSTON AROUND 655 PM CDT... AT 626 PM CDT...A STORM SPOTTER REPORTED A TORNADO 5 MILES NORTHEAST OF DANTE. THIS TORNADO IS MOVING TOWARDS TRIPP. PLEASE TAKE COVER IF YOU LIVE ANYWHERE BETWEEN DANTE AND TRIPP. 75 TO 80 MPH WINDS HAVE ALSO BEEN REPORTED ALONG THE OUTFLOW OVER FAR EASTERN CHARLES MIX AND FAR WESTERN BON HOMME. PRECAUTIONARY/PREPAREDNESS ACTIONS... TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT YOURSELF FROM FLYING DEBRIS. && LAT...LON 4350 9795 4338 9763 4302 9801 4326 9831 TIME...MOT...LOC 2331Z 223DEG 30KT 4320 9808 $$ WEISSER
516
WWUS53 KFSD 302353
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
653 PM CDT MON MAY 30 2011
SDC009-023-043-310002-
/O.CAN.KFSD.TO.W.0023.000000T0000Z-110531T0000Z/
DOUGLAS SD-CHARLES MIX SD-BON HOMME SD-
653 PM CDT MON MAY 30 2011
...THE TORNADO WARNING FOR NORTHWESTERN BON HOMME...EAST CENTRAL
CHARLES MIX AND SOUTHEASTERN DOUGLAS COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA. A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR
SOUTHEASTERN CHARLES MIX.
LAT...LON 4338 9811 4339 9811 4350 9795 4339 9773
4317 9799
TIME...MOT...LOC 2352Z 223DEG 30KT 4333 9791
$$
SDC067-310000-
/O.CON.KFSD.TO.W.0023.000000T0000Z-110531T0000Z/
HUTCHINSON SD-
653 PM CDT MON MAY 30 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR WESTERN HUTCHINSON COUNTY
UNTIL 700 PM CDT...
AT 652 PM CDT...NATIONAL WEATHER SERVICE METEOROLOGISTS WERE TRACKING
A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED 6 MILES NORTH OF TRIPP...OR 30 MILES SOUTH OF
MITCHELL...MOVING NORTHEAST AT 35 MPH.
THIS TORNADO WILL AFFECT MAINLY RURAL AREAS OF WESTERN HUTCHINSON
COUNTY.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4338 9811 4339 9811 4350 9795 4339 9773
4317 9799
TIME...MOT...LOC 2352Z 223DEG 30KT 4333 9791
$$
WEISSER953
WWUS53 KFSD 302358 RRA
SVSFSD
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
658 PM CDT MON MAY 30 2011
SDC067-310009-
/O.EXP.KFSD.TO.W.0023.000000T0000Z-110531T0000Z/
HUTCHINSON SD-
658 PM CDT MON MAY 30 2011
...THE TORNADO WARNING FOR WESTERN HUTCHINSON COUNTY WILL EXPIRE AT
700 PM CDT...
THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.
ADDITIONAL STRONG THUNDERSTORMS ARE STILL POSSIBLE...AND A TORNADO
WATCH REMAINS IN EFFECT UNTIL 900 PM CDT.
LAT...LON 4338 9811 4339 9811 4350 9795 4339 9773
4317 9799
TIME...MOT...LOC 2359Z 223DEG 30KT 4337 9785
$$The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 29, 11:03 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix | 42 min |
| May 29, 11:30 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, Turner | 45 min |
| May 29, 11:39 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Gregory, Hutchinson, Turner and 1 more | 36 min |
| May 30, 12:14 AM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas, Hutchinson, Turner, Yankton | 31 min |
| May 30, 12:53 AM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 37 min |
| May 30, 1:46 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld | 44 min |
| May 30, 2:39 AM CDT | Severe Thunderstorm Warning | FSD | Beadle | 36 min |
| May 30, 3:36 AM CDT | Severe Thunderstorm Warning | FSD | Brookings | 39 min |
| May 30, 9:28 AM CDT | River Flood Warning | FSD | Minnehaha | 71 hr |
| May 30, 5:08 PM CDT | Severe Thunderstorm Warning | FSD | Gregory | 37 min |
| May 30, 5:37 PM CDT | Severe Thunderstorm Warning | FSD | Jerauld | 23 min |
| May 30, 5:48 PM CDT | Tornado Warning | FSD | Bon Homme, Charles Mix | 42 min |
| May 30, 6:33 PM CDT | Tornado Warning | FSD | Beadle | 27 min |
| May 30, 6:38 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 52 min |
| May 30, 6:51 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 39 min |
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.