Alert archive / South Dakota / Severe Thunderstorm Warnings in 2011
Severe Thunderstorm Warning 113, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 22, 2011, 5:25 PM CDT for Codington County, Grant County, Roberts County, South Dakota. It was in force for 50 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
- Jul 22, 2011, 5:25 PM CDT (22:25 UTC)
- Expired
- Jul 22, 2011, 6:15 PM CDT
- In force
- 50 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Codington County, SD, Grant County, SD, Roberts County, SD
The radar
The Aberdeen radar (KABR), 112 km from the middle of the area, began a volume at 22:27 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 |
|---|---|---|---|
| Jul 22, 5:40 PM CDT | HAIL 1.75 | 6 S Summit, SD |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 10.4 hours before the alert went out and 115 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
- 593 J/kg
- Mixed-layer CIN
- -243 J/kg
- Mixed-layer LCL
- 2003 m above ground
- 0-6 km bulk shear
- 45 kt
- 0-1 km storm-relative helicity
- 67 m²/s²
- 0-3 km storm-relative helicity
- 58 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.3
The text
As transmitted, in the capitals the NWS used until 2016.
822 WUUS53 KABR 222225 SVRABR SDC029-051-109-222315- /O.NEW.KABR.SV.W.0113.110722T2225Z-110722T2315Z/ BULLETIN - EAS ACTIVATION REQUESTED SEVERE THUNDERSTORM WARNING NATIONAL WEATHER SERVICE ABERDEEN SD 525 PM CDT FRI JUL 22 2011 THE NATIONAL WEATHER SERVICE IN ABERDEEN HAS ISSUED A * SEVERE THUNDERSTORM WARNING FOR... NORTHEASTERN CODINGTON COUNTY IN NORTHEAST SOUTH DAKOTA... NORTHWESTERN GRANT COUNTY IN NORTHEAST SOUTH DAKOTA... SOUTH CENTRAL ROBERTS COUNTY IN NORTHEAST SOUTH DAKOTA... * UNTIL 615 PM CDT * AT 523 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 6 MILES NORTHWEST OF SOUTH SHORE...OR 17 MILES NORTHEAST OF WATERTOWN... MOVING NORTHEAST AT 20 MPH. * THE SEVERE THUNDERSTORM WILL BE NEAR... MARVIN...SUMMIT AND TWIN BROOKS AROUND 555 PM CDT... THIS WARNING INCLUDES INTERSTATE 29 BETWEEN MILE MARKERS 188 AND 213. THIS WARNING INCLUDES HIGHWAY 12 BETWEEN MILE MARKERS 363 AND 383. PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WINDS IN EXCESS OF 60 MILES PER HOUR...LARGE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION...SEEK SHELTER IN A STURDY STRUCTURE UNTIL THE STORM HAS PASSED. && LAT...LON 4542 9708 4526 9671 4500 9696 4508 9722 TIME...MOT...LOC 2225Z 207DEG 17KT 4514 9703 WIND...HAIL 60MPH 1.00IN $$ TDK
2 follow-up statements
714 WWUS53 KABR 222245 SVSABR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 545 PM CDT FRI JUL 22 2011 SDC029-051-109-222315- /O.CON.KABR.SV.W.0113.000000T0000Z-110722T2315Z/ ROBERTS SD-GRANT SD-CODINGTON SD- 545 PM CDT FRI JUL 22 2011 ...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN CODINGTON...NORTHWESTERN GRANT AND SOUTH CENTRAL ROBERTS COUNTIES UNTIL 615 PM CDT... AT 541 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A SEVERE THUNDERSTORM CAPABLE OF PRODUCING QUARTER SIZE HAIL...AND DAMAGING WINDS IN EXCESS OF 60 MPH. THIS STORM WAS LOCATED 7 MILES SOUTHWEST OF MARVIN...OR 19 MILES WEST OF MILBANK...MOVING NORTHEAST AT 15 MPH. THE SEVERE THUNDERSTORM WILL BE NEAR... MARVIN...SUMMIT AND TWIN BROOKS AROUND 605 PM CDT... PRECAUTIONARY/PREPAREDNESS ACTIONS... SEVERE THUNDERSTORMS PRODUCE DAMAGING WIND IN EXCESS OF 60 MILES PER HOUR...DESTRUCTIVE HAIL...DEADLY LIGHTNING...AND VERY HEAVY RAIN. FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF YOUR HOME OR BUSINESS. HEAVY RAINS FLOOD ROADS QUICKLY SO DO NOT DRIVE INTO AREAS WHERE WATER COVERS THE ROAD. && A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY MORNING FOR NORTH CENTRAL SOUTH DAKOTA. LAT...LON 4507 9690 4516 9719 4542 9708 4526 9671 TIME...MOT...LOC 2245Z 210DEG 12KT 4522 9701 WIND...HAIL 60MPH 1.00IN $$ TDK
336 WWUS53 KABR 222315 SVSABR SEVERE WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 615 PM CDT FRI JUL 22 2011 SDC029-051-109-222325- /O.EXP.KABR.SV.W.0113.000000T0000Z-110722T2315Z/ ROBERTS SD-GRANT SD-CODINGTON SD- 615 PM CDT FRI JUL 22 2011 ...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CODINGTON... NORTHWESTERN GRANT AND SOUTH CENTRAL ROBERTS COUNTIES HAS EXPIRED... THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE LIMITS...AND NO LONGER POSES AN IMMEDIATE THREAT TO LIFE OR PROPERTY...HOWEVER GUSTY WINDS ARE STILL POSSIBLE WITH THIS THUNDERSTORM. A TORNADO WATCH REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY MORNING FOR NORTH CENTRAL SOUTH DAKOTA. A TORNADO WATCH ALSO REMAINS IN EFFECT UNTIL 200 AM CDT SATURDAY MORNING FOR WEST CENTRAL MINNESOTA AND NORTHEAST SOUTH DAKOTA. LAT...LON 4507 9690 4516 9719 4542 9708 4526 9671 TIME...MOT...LOC 2245Z 210DEG 12KT 4522 9701 $$ TDK
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 21, 8:49 PM CDT | Severe Thunderstorm Warning | ABR | Jones | 26 min |
| Jul 21, 9:33 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Jones, Stanley, Sully | 42 min |
| Jul 21, 10:13 PM CDT | Severe Thunderstorm Warning | ABR | Lyman | 32 min |
| Jul 21, 10:17 PM CDT | Severe Thunderstorm Warning | ABR | Hughes, Sully | 43 min |
| Jul 22, 2:31 AM CDT | Areal Flood Warning | ABR | Buffalo, Campbell, Corson, Dewey, Hughes, Hyde and 5 more | 7 days |
| Jul 22, 5:10 AM CDT | Severe Thunderstorm Warning | ABR | Jones | 37 min |
| Jul 22, 5:45 AM CDT | Severe Thunderstorm Warning | ABR | Jones, Lyman | 30 min |
| Jul 22, 6:43 PM CDT | Flash Flood Warning | ABR | Codington, Grant | 6 hr |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2011Every severe thunderstorm warning 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.