Alert archive / South Dakota / Tornado Warnings in 2011
Tornado Warning 23, NWS Aberdeen, SD
NWS Aberdeen, SD issued this tornado warning at Aug 14, 2011, 7:16 PM MDT for Corson County, South Dakota. It was in force for 29 min. 3 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
- Aug 14, 2011, 7:16 PM MDT (01:16 UTC)
- Expired
- Aug 14, 2011, 7:45 PM MDT
- In force
- 29 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
County Corson County, SD
The radar
The Bismarck radar (KBIS), 120 km from the middle of the area, began a volume at 01:19 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 |
|---|---|---|---|
| Aug 14, 7:16 PM MDT | TSTM WND GST 70 | 2 S Mclaughlin, SD | |
| Aug 14, 7:35 PM MDT | TORNADO | 4 Nne Little Eagle, SD | BRIEF TORNADO TOUCHDOWN. |
| Aug 14, 7:55 PM MDT | TORNADO | 2 E Little Eagle, SD | BRIEF TOUCHDOWN |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 00:00Z, 1.3 hours before the alert went out and 119 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
- 1399 J/kg
- Mixed-layer CIN
- -128 J/kg
- Mixed-layer LCL
- 1398 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 104 m²/s²
- 0-3 km storm-relative helicity
- 222 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 7.2
The text
As transmitted, in the capitals the NWS used until 2016.
309
WFUS53 KABR 150116
TORABR
SDC031-150145-
/O.NEW.KABR.TO.W.0023.110815T0116Z-110815T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE ABERDEEN SD
716 PM MDT SUN AUG 14 2011
THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A
* TORNADO WARNING FOR...
EAST CENTRAL CORSON COUNTY IN NORTH CENTRAL SOUTH DAKOTA...
* UNTIL 745 PM MDT/845 PM CDT/
* AT 714 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR MAHTO...OR NEAR MCLAUGHLIN...AND MOVING EAST
AT 10 MPH.
* THIS TORNADIC STORM WILL BE NEAR...
MAHTO AROUND 725 PM MDT...
WAKPALA AROUND 745 PM MDT...
THIS WARNING INCLUDES HIGHWAY 12 BETWEEN MILE MARKERS 158 AND 176.
SPOTTERS REPORTED A ROPE FUNNEL CLOUD 4 MILES SOUTH OF MCLAUGHLIN.
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 4580 10036 4565 10040 4560 10042 4558 10044
4566 10089 4586 10084
TIME...MOT...LOC 0116Z 280DEG 16KT 4573 10073
$$
SCARLETT1 follow-up statement
363
WWUS53 KABR 150127
SVSABR
SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE ABERDEEN SD
827 PM CDT SUN AUG 14 2011
SDC031-150145-
/O.CON.KABR.TO.W.0023.000000T0000Z-110815T0145Z/
CORSON SD-
727 PM MDT SUN AUG 14 2011
...A TORNADO WARNING REMAINS IN EFFECT FOR EAST CENTRAL CORSON COUNTY
UNTIL 745 PM MDT/845 PM CDT/...
AT 723 PM MDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
SEVERE THUNDERSTORM CAPABLE OF PRODUCING A TORNADO. THIS DANGEROUS
STORM WAS LOCATED NEAR LITTLE EAGLE...OR 6 MILES SOUTH OF
MCLAUGHLIN...MOVING SOUTHEAST AT 10 MPH.
THIS DANGEROUS STORM WILL BE NEAR...
MAHTO AROUND 740 PM MDT...
WAKPALA AROUND 745 PM MDT...
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.
&&
LAT...LON 4580 10036 4565 10040 4560 10042 4558 10044
4566 10089 4586 10084
TIME...MOT...LOC 0127Z 295DEG 10KT 4573 10075
$$
SCARLETTThe office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 14, 6:26 PM MDT | Severe Thunderstorm Warning | ABR | Corson | 49 min |
| Aug 14, 7:01 PM MDT | Severe Thunderstorm Warning | ABR | Corson | 59 min |
| Aug 14, 7:48 PM MDT | Tornado Warning | ABR | Corson | 27 min |
| Aug 14, 8:15 PM MDT | Tornado Warning | ABR | Corson, Dewey | 30 min |
| Aug 14, 8:46 PM MDT | Severe Thunderstorm Warning | ABR | Corson, Dewey | 27 min |
| Aug 14, 10:01 PM MDT | Severe Thunderstorm Warning | ABR | Spink | 44 min |
| Aug 14, 10:25 PM MDT | Severe Thunderstorm Warning | ABR | Day | 24 min |
| Aug 15, 4:06 AM MDT | Areal Flood Warning | ABR | Roberts | 5 days |
| Aug 15, 9:42 AM MDT | Flash Flood Warning | ABR | Roberts | 7 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.