Alert archive / South Dakota / Tornado Warnings in 2011
Tornado Warning 9, NWS Aberdeen, SD
NWS Aberdeen, SD issued this tornado warning at Jun 17, 2011, 6:28 PM CDT for Marshall County, Roberts County, South Dakota. It was in force for 32 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
- Jun 17, 2011, 6:28 PM CDT (23:28 UTC)
- Expired
- Jun 17, 2011, 7:00 PM CDT
- In force
- 32 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
Counties Marshall County, SD, Roberts County, SD
The radar
The Aberdeen radar (KABR), 101 km from the middle of the area, began a volume at 23:30 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 17, 6:28 PM CDT | FUNNEL CLOUD | 9 W Sisseton, SD | |
| Jun 17, 6:28 PM CDT | TORNADO | 11 W Sisseton, SD | BRIEF TOUCHDOWN. TIME AND POSITION BASED ON RADAR. NSSL SHAVE REPORT |
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 17, 5:34 PM CDT | Tornado Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 11.5 hours before the alert went out and 132 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
- 35 J/kg
- Mixed-layer CIN
- -177 J/kg
- Mixed-layer LCL
- 665 m above ground
- 0-6 km bulk shear
- 35 kt
- 0-1 km storm-relative helicity
- 87 m²/s²
- 0-3 km storm-relative helicity
- 106 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
242 WFUS53 KABR 172328 TORABR SDC091-109-180000- /O.NEW.KABR.TO.W.0009.110617T2328Z-110618T0000Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ABERDEEN SD 628 PM CDT FRI JUN 17 2011 THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A * TORNADO WARNING FOR... SOUTHEASTERN MARSHALL COUNTY IN NORTHEAST SOUTH DAKOTA... WEST CENTRAL ROBERTS COUNTY IN NORTHEAST SOUTH DAKOTA... * UNTIL 700 PM CDT * AT 626 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 7 MILES NORTHEAST OF EDEN...OR 12 MILES WEST OF SISSETON...AND MOVING EAST AT 10 MPH. * THIS TORNADIC STORM WILL BE NEAR... SISSETON AROUND 700 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. TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ABERDEEN. && LAT...LON 4582 9710 4564 9700 4559 9728 4569 9738 TIME...MOT...LOC 2328Z 259DEG 9KT 4566 9728 $$ CONNELLY
2 follow-up statements
178 WWUS53 KABR 172346 SVSABR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 646 PM CDT FRI JUN 17 2011 SDC091-109-180000- /O.CON.KABR.TO.W.0009.000000T0000Z-110618T0000Z/ ROBERTS SD-MARSHALL SD- 646 PM CDT FRI JUN 17 2011 ...A TORNADO WARNING REMAINS IN EFFECT FOR SOUTHEASTERN MARSHALL AND WEST CENTRAL ROBERTS COUNTIES UNTIL 700 PM CDT... AT 644 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED 9 MILES WEST OF SISSETON...MOVING EAST AT 10 MPH. THIS DANGEROUS STORM WILL BE NEAR... SISSETON AROUND 700 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... TO REPORT SEVERE WEATHER...CONTACT YOUR NEAREST LAW ENFORCEMENT AGENCY. THEY WILL RELAY YOUR REPORT TO THE NATIONAL WEATHER SERVICE IN ABERDEEN. && A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SATURDAY MORNING FOR WEST CENTRAL MINNESOTA AND NORTHEAST SOUTH DAKOTA. LAT...LON 4573 9729 4582 9710 4564 9700 4559 9726 TIME...MOT...LOC 2346Z 259DEG 9KT 4567 9722 $$ CONNELLY
361 WWUS53 KABR 172358 SVSABR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 658 PM CDT FRI JUN 17 2011 SDC091-109-180008- /O.EXP.KABR.TO.W.0009.000000T0000Z-110618T0000Z/ ROBERTS SD-MARSHALL SD- 658 PM CDT FRI JUN 17 2011 ...THE TORNADO WARNING FOR SOUTHEASTERN MARSHALL AND WEST CENTRAL ROBERTS COUNTIES WILL EXPIRE AT 700 PM CDT/600 PM MDT/... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY. A TORNADO WATCH REMAINS IN EFFECT UNTIL 100 AM CDT SATURDAY MORNING FOR WEST CENTRAL MINNESOTA AND NORTHEAST SOUTH DAKOTA. LAT...LON 4573 9729 4582 9710 4564 9700 4559 9726 TIME...MOT...LOC 2358Z 259DEG 9KT 4568 9718 $$ CONNELLY
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 16, 8:11 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 34 min |
| Jun 16, 8:25 PM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman, Stanley | 50 min |
| Jun 17, 6:11 PM CDT | Severe Thunderstorm Warning | ABR | Marshall, Roberts | 49 min |
| Jun 17, 6:56 PM CDT | Severe Thunderstorm Warning | ABR | Roberts | 49 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.