Alert archive / South Dakota / Tornado Warnings in 2009
Tornado Warning 15, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Jun 16, 2009, 5:11 PM CDT for Aurora County, Davison County, South Dakota. It was in force for 34 min. 5 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
- Jun 16, 2009, 5:11 PM CDT (22:11 UTC)
- Expired
- Jun 16, 2009, 5:45 PM CDT
- In force
- 34 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
Counties Aurora County, SD, Davison County, SD
The radar
The Sioux Falls radar (KFSD), 121 km from the middle of the area, began a volume at 22:11 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 |
|---|---|---|---|
| Jun 16, 5:24 PM CDT | HAIL 1.75 | 3 S Mount Vernon, SD | |
| Jun 16, 5:30 PM CDT | HAIL 1.75 | Mount Vernon, SD | |
| Jun 16, 5:31 PM CDT | TORNADO | 6 S Mount Vernon, SD | |
| Jun 16, 5:36 PM CDT | HAIL 1.75 | 4 S Mount Vernon, SD | |
| Jun 16, 5:40 PM CDT | HAIL 0.88 | 6 Ssw Mitchell, SD | IN ADDITION TO NICKEL SIZE HAIL, A WALL CLOUD WAS SITED 6 MILES SSW OF MITCHELL. |
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 |
|---|---|---|---|
| Jun 16, 4:16 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 10.2 hours before the alert went out and 306 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
- 212 J/kg
- Mixed-layer CIN
- -50 J/kg
- Mixed-layer LCL
- 687 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 17 m²/s²
- 0-3 km storm-relative helicity
- 66 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
000 WFUS53 KFSD 162211 TORFSD SDC003-035-162245- /O.NEW.KFSD.TO.W.0015.090616T2211Z-090616T2245Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE SIOUX FALLS SD 511 PM CDT TUE JUN 16 2009 THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A * TORNADO WARNING FOR... EASTERN AURORA COUNTY IN SOUTHEAST SOUTH DAKOTA DAVISON COUNTY IN SOUTHEAST SOUTH DAKOTA * UNTIL 545 PM CDT * AT 508 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 6 MILES WEST OF MOUNT VERNON...OR 17 MILES WEST OF MITCHELL...AND MOVING EAST AT 15 MPH. * THIS TORNADIC STORM WILL BE NEAR... MOUNT VERNON AROUND 525 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS EXPECTED TO PRODUCE QUARTERS SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS WELL AWAY FROM THE STORM CENTER. && LAT...LON 4378 9803 4352 9810 4361 9851 4385 9844 TIME...MOT...LOC 2210Z 283DEG 13KT 4368 9836 $$ BT
4 follow-up statements
000 WWUS53 KFSD 162213 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 513 PM CDT TUE JUN 16 2009 SDC003-035-162245- /O.CON.KFSD.TO.W.0015.000000T0000Z-090616T2245Z/ AURORA SD-DAVISON SD- 513 PM CDT TUE JUN 16 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR DAVISON AND EASTERN AURORA COUNTIES... AT 511 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR MOUNT VERNON...OR 16 MILES WEST OF MITCHELL...MOVING EAST AT 15 MPH. THE TORNADO WILL BE NEAR... MOUNT VERNON AROUND 525 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING QUARTER SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. AT 500 PM...A TRAINED WEATHER SPOTTER REPORTED A ROTATING WALL CLOUD WITH THIS STORM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING FOR SOUTHEASTERN SOUTH DAKOTA. && LAT...LON 4378 9803 4352 9810 4361 9851 4385 9844 TIME...MOT...LOC 2212Z 283DEG 13KT 4368 9835 $$ BT
000 WWUS53 KFSD 162220 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 520 PM CDT TUE JUN 16 2009 SDC003-035-162245- /O.CON.KFSD.TO.W.0015.000000T0000Z-090616T2245Z/ AURORA SD-DAVISON SD- 520 PM CDT TUE JUN 16 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR DAVISON AND EASTERN AURORA COUNTIES... AT 517 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED 6 MILES SOUTHWEST OF MOUNT VERNON...OR 17 MILES WEST OF MITCHELL...MOVING EAST AT 15 MPH. THE TORNADO WILL BE NEAR... MOUNT VERNON AROUND 530 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... AT 515 PM...MEDIA REPORTED A ROTATING WALL CLOUD WITH THIS STORM. IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER NOW IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING GOFLBALL SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING FOR SOUTHEASTERN SOUTH DAKOTA. && LAT...LON 4378 9803 4352 9810 4361 9851 4385 9844 TIME...MOT...LOC 2219Z 291DEG 12KT 4365 9834 $$ BT
000 WWUS53 KFSD 162227 SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 527 PM CDT TUE JUN 16 2009 SDC003-035-162245- /O.CON.KFSD.TO.W.0015.000000T0000Z-090616T2245Z/ AURORA SD-DAVISON SD- 527 PM CDT TUE JUN 16 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR DAVISON AND EASTERN AURORA COUNTIES... AT 524 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR CONTINUED TO INDICATE A TORNADO. THIS TORNADO WAS LOCATED NEAR MOUNT VERNON...OR 16 MILES SOUTHWEST OF MITCHELL...MOVING EAST AT 15 MPH. THE TORNADO WILL BE NEAR... MOUNT VERNON AROUND 530 PM CDT... AT 525 PM...A FUNNEL CLOUD WAS REPORTED BY A TRAINED SPOTTTER 7 MILES SOUTH OF MOUTH VERNON. GOLF BALL SIZED HAIL HAS BEEN REPORTED NEAR MOUNT VERNON WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... IN ADDITION TO THE TORNADO...THIS STORM IS CAPABLE OF PRODUCING TWO INCH SIZE HAIL AND DESTRUCTIVE STRAIGHT LINE WINDS. A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING FOR SOUTHEASTERN SOUTH DAKOTA. && LAT...LON 4378 9803 4352 9810 4361 9851 4385 9844 TIME...MOT...LOC 2225Z 291DEG 12KT 4364 9832 $$ BT
000 WWUS53 KFSD 162235 RRA SVSFSD SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE SIOUX FALLS SD 535 PM CDT TUE JUN 16 2009 SDC003-035-162245- /O.CON.KFSD.TO.W.0015.000000T0000Z-090616T2245Z/ AURORA SD-DAVISON SD- 535 PM CDT TUE JUN 16 2009 ...A TORNADO WARNING REMAINS IN EFFECT UNTIL 545 PM CDT FOR DAVISON AND EASTERN AURORA COUNTIES... AT 531 PM CDT...DOPPLER RADAR INDICATED TWO AREAS OF ROTATION THAT COULD PRODUCE A TORNADO. THESE CIRCULATIONS WERE LOCATED 7 MILES SOUTH OF MOUNT VERNON AND 6 MILES SOUTHWEST OF MOUNT VERNON...MOVING EAST AT 15 MPH. TORNADO PRODUCING STORMS WILL BE NEAR... MOUNT VERNON AROUND 540 PM CDT... AT 535 PM...A TRAINED WEATHER SPOTTER REPORTED A TORNADO WITH THIS STORM IF YOU ARE IN THE PATH OF THIS STORM...SEEK SHELTER IMMEDIATELY. GOLFBALL HAIL HAS BEEN REPORTED IN SOUTH OF MOUNT VERNON WITH THIS STORM. IF YOU ARE IN THE PATH OF THE STORM...TAKE IMMEDIATE ACTION TO PROTECT LIFE AND PROPERTY. PRECAUTIONARY/PREPAREDNESS ACTIONS... A TORNADO WATCH REMAINS IN EFFECT UNTIL 900 PM CDT TUESDAY EVENING FOR SOUTHEASTERN SOUTH DAKOTA. && LAT...LON 4378 9803 4352 9810 4361 9851 4385 9844 TIME...MOT...LOC 2232Z 291DEG 12KT 4362 9830 4366 9834 $$ BT
The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 3:35 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 25 min |
| Jun 16, 3:43 PM CDT | Tornado Warning | FSD | Beadle, Jerauld | 47 min |
| Jun 16, 3:57 PM CDT | Tornado Warning | FSD | Beadle | 16 min |
| Jun 16, 4:29 PM CDT | Tornado Warning | FSD | Beadle, Jerauld | 46 min |
| Jun 16, 4:42 PM CDT | Severe Thunderstorm Warning | FSD | Beadle | 33 min |
| Jun 16, 4:43 PM CDT | Tornado Warning | FSD | Aurora | 40 min |
| Jun 16, 5:04 PM CDT | Tornado Warning | FSD | Jerauld, Sanborn | 41 min |
| Jun 16, 5:28 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Jerauld, Sanborn | 47 min |
| Jun 16, 5:41 PM CDT | Tornado Warning | FSD | Aurora, Davison | 49 min |
| Jun 16, 6:08 PM CDT | Tornado Warning | FSD | Davison, Douglas, Hanson, Hutchinson | 52 min |
| Jun 16, 6:18 PM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Jerauld, Sanborn | 29 min |
| Jun 16, 6:36 PM CDT | Tornado Warning | FSD | Davison, Hanson, Hutchinson | 39 min |
| Jun 16, 6:55 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Douglas, Hanson, Hutchinson | 35 min |
| Jun 16, 6:58 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Miner, Sanborn | 32 min |
Nearby
Tornado Warnings in South Dakota, 2009Every tornado warning in 2009Tornadoes in 2009
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.