Alert archive / South Dakota / Tornado Warnings in 2011
Tornado Warning 6, NWS Aberdeen, SD
NWS Aberdeen, SD issued this tornado warning at May 30, 2011, 5:55 PM CDT for 5 counties in South Dakota. It was in force for 35 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 30, 2011, 5:55 PM CDT (22:55 UTC)
- Expired
- May 30, 2011, 6:30 PM CDT
- In force
- 35 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
Counties Buffalo County, SD, Hand County, SD, Hughes County, SD, Hyde County, SD, Lyman County, SD
The radar
The Aberdeen radar (KABR), 143 km from the middle of the area, began a volume at 22:55 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 12:00Z, 10.9 hours before the alert went out and 101 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.
075 WFUS53 KABR 302255 TORABR SDC017-059-065-069-085-302330- /O.NEW.KABR.TO.W.0006.110530T2255Z-110530T2330Z/ BULLETIN - EAS ACTIVATION REQUESTED TORNADO WARNING NATIONAL WEATHER SERVICE ABERDEEN SD 555 PM CDT MON MAY 30 2011 THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A * TORNADO WARNING FOR... NORTHWESTERN BUFFALO COUNTY IN CENTRAL SOUTH DAKOTA... WEST CENTRAL HAND COUNTY IN CENTRAL SOUTH DAKOTA... EXTREME SOUTHEASTERN HUGHES COUNTY IN CENTRAL SOUTH DAKOTA... HYDE COUNTY IN CENTRAL SOUTH DAKOTA... NORTHEASTERN LYMAN COUNTY IN CENTRAL SOUTH DAKOTA... * UNTIL 630 PM CDT * AT 550 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS STORM WAS LOCATED NEAR LOWER BRULE...AND MOVING NORTH AT 60 MPH. * THIS TORNADIC STORM WILL BE NEAR... STEPHAN AROUND 600 PM CDT... HIGHMORE AROUND 615 PM CDT... THIS WARNING INCLUDES HIGHWAY 14 BETWEEN MILE MARKERS 272 AND 289. 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 4474 9954 4467 9915 4394 9950 4402 9969 TIME...MOT...LOC 2255Z 195DEG 67KT 4418 9953 $$ CONNELLY
2 follow-up statements
672
WWUS53 KABR 302307
SVSABR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
607 PM CDT MON MAY 30 2011
SDC017-065-085-302317-
/O.CAN.KABR.TO.W.0006.000000T0000Z-110530T2330Z/
LYMAN SD-HUGHES SD-BUFFALO SD-
607 PM CDT MON MAY 30 2011
...THE TORNADO WARNING FOR NORTHWESTERN BUFFALO...EXTREME
SOUTHEASTERN HUGHES AND NORTHEASTERN LYMAN COUNTIES IS CANCELLED...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED OR MOVED OUT OF THE
WARNED AREA.
LAT...LON 4422 9962 4422 9964 4422 9965 4474 9954
4467 9915 4420 9938 4420 9958
TIME...MOT...LOC 2307Z 195DEG 64KT 4436 9946
$$
SDC059-069-302330-
/O.CON.KABR.TO.W.0006.000000T0000Z-110530T2330Z/
HYDE SD-HAND SD-
607 PM CDT MON MAY 30 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR WEST CENTRAL HAND AND HYDE
COUNTIES UNTIL 630 PM CDT...
AT 604 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR STEPHAN...OR 15 MILES SOUTH OF HIGHMORE...
MOVING NORTH AT 60 MPH.
THIS DANGEROUS STORM WILL BE NEAR...
HIGHMORE AROUND 615 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 4422 9962 4422 9964 4422 9965 4474 9954
4467 9915 4420 9938 4420 9958
TIME...MOT...LOC 2307Z 195DEG 64KT 4436 9946
$$
CONNELLY228
WWUS53 KABR 302330
SVSABR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
630 PM CDT MON MAY 30 2011
SDC059-069-302339-
/O.EXP.KABR.TO.W.0006.000000T0000Z-110530T2330Z/
HYDE SD-HAND SD-
630 PM CDT MON MAY 30 2011
...THE TORNADO WARNING FOR WEST CENTRAL HAND AND HYDE COUNTIES WILL
EXPIRE AT 630 PM CDT/530 PM MDT/...
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
LAT...LON 4422 9962 4422 9964 4422 9965 4474 9954
4467 9915 4420 9938 4420 9958
TIME...MOT...LOC 2329Z 195DEG 64KT 4474 9932
$$
CONNELLYThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 30, 2:46 AM CDT | Flash Flood Watch | ABR | Brown, Clark, Codington, Day, Deuel, Grant and 4 more | 18 hr |
| May 30, 2:59 AM CDT | High Wind Watch | ABR | Brown, Buffalo, Campbell, Clark, Codington, Corson and 20 more | 24 hr |
| May 30, 2:59 AM CDT | Wind Advisory | ABR | Clark, Codington, Day, Deuel, Grant, Hamlin and 2 more | 11 hr |
| May 30, 3:13 AM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Spink | 37 min |
| May 30, 4:38 AM CDT | Severe Thunderstorm Warning | ABR | Day, Grant, Marshall, Roberts | 20 min |
| May 30, 9:30 AM CDT | River Flood Warning | ABR | Codington | 7 days |
| May 30, 9:57 AM CDT | River Flood Warning | ABR | Spink | 3 days |
| May 30, 5:34 PM CDT | Severe Thunderstorm Warning | ABR | Buffalo, Hand | 26 min |
| May 30, 6:00 PM CDT | Severe Thunderstorm Warning | ABR | Faulk, Hand, Spink | 14 min |
| May 30, 6:40 PM CDT | Severe Thunderstorm Warning | ABR | Brown, Clark, Day, Spink | 35 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; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.