Alert archive / South Dakota / Severe Thunderstorm Warnings in 2009
Severe Thunderstorm Warning 98, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 31, 2009, 4:33 PM CDT for Brown County, Day County, Marshall County, South Dakota. It was in force for 42 min. No storm report in the archive falls inside the area while it was in force.
The area
The counties it named.
The facts
- Issued
- Jul 31, 2009, 4:33 PM CDT (21:33 UTC)
- Expired
- Jul 31, 2009, 5:15 PM CDT
- In force
- 42 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
Counties Brown County, SD, Day County, SD, Marshall County, SD
The radar
The Aberdeen radar (KABR), 46 km from the middle of the area, began a volume at 21:35 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 forecasters said that day
The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Aberdeen, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jul 31, 3:40 PM CDT, 53 minutes earlier.
Area forecast discussion, Jul 31, 3:40 PM CDT, 53 minutes before
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</html>Hazardous weather outlook, Jul 31, 4:38 AM CDT, 11 hours 55 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ABERDEEN SD 438 AM CDT FRI JUL 31 2009 MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-010945- TRAVERSE-BIG STONE-CORSON-CAMPBELL-MCPHERSON-BROWN-MARSHALL- ROBERTS-WALWORTH-EDMUNDS-DAY-DEWEY-POTTER-FAULK-SPINK-CLARK- CODINGTON-GRANT-HAMLIN-DEUEL-STANLEY-SULLY-HUGHES-HYDE-HAND-JONES- LYMAN-BUFFALO- 438 AM CDT FRI JUL 31 2009 /338 AM MDT FRI JUL 31 2009/ THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL MINNESOTA...CENTRAL SOUTH DAKOTA...NORTH CENTRAL SOUTH DAKOTA AND NORTHEAST SOUTH DAKOTA. .DAY ONE...TODAY AND TONIGHT AN UPPER LEVEL TROUGH OF LOW PRESSURE AND SURFACE COLD FRONT WILL BRING A CHANCE OF SHOWERS AND THUNDERSTORMS TO THE AREA THIS AFTERNOON AND EVENING. NO SEVERE WEATHER IS EXPECTED. .DAYS TWO THROUGH SEVEN...SATURDAY THROUGH THURSDAY THERE IS A SLIGHT CHANCE OF THUNDERSTORMS SUNDAY NIGHT AND AGAIN TUESDAY NIGHT THROUGH WEDNESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. MOHR
In the hours before
Special weather statement, Jul 31, 3:14 PM CDT, 1 hour 19 minutes before
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</html>Special weather statement, Jul 31, 4:21 PM CDT, 12 minutes before
SPECIAL WEATHER STATEMENT NATIONAL WEATHER SERVICE ABERDEEN SD 421 PM CDT FRI JUL 31 2009 SDZ006>008-011-312215- BROWN-DAY-MARSHALL-ROBERTS- 421 PM CDT FRI JUL 31 2009 ...A SIGNIFICANT WEATHER ADVISORY HAS BEEN ISSUED FOR MARSHALL... NORTHEASTERN BROWN...NORTHWESTERN DAY AND NORTHWESTERN ROBERTS COUNTIES UNTIL 515 PM CDT... AT 420 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED STRONG THUNDERSTORMS ALONG A LINE EXTENDING FROM 9 MILES NORTHEAST OF HECLA TO HECLA TO COLUMBIA...MOVING EAST AT 35 MPH. A FEW LOCATIONS IN THE ADVISORY INCLUDE PUTNEY...CLAREMONT... AMHERST...KIDDER...BRITTON...LANGFORD...FORT SISSETON STATE PARK... VEBLEN...ROY LAKE STATE PARK...LAKE CITY...HILLHEAD AND EDEN. SMALL HAIL...AND WINDS AROUND 40 TO 50 MPH ARE EXPECTED WITH THESE STORMS. PRECAUTIONARY/PREPAREDNESS ACTIONS... IF IN A BOAT...GET OUT OF THE WATER. LIGHTNING CAN STRIKE OUT TO 15 MILES FROM THE PARENT THUNDERSTORM. IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO BE STRUCK BY LIGHTNING. && TDK
The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 31, 4:41 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Day | 49 min |
| Jul 31, 4:59 PM CDT | Severe Thunderstorm Warning | ABR | Clark, Codington, Hamlin | 46 min |
| Jul 31, 5:26 PM CDT | Severe Thunderstorm Warning | ABR | Codington, Grant | 49 min |
| Jul 31, 6:11 PM CDT | Severe Thunderstorm Warning | ABR | Deuel, Grant | 23 min |
| Jul 31, 5:51 PM CDT | Severe Thunderstorm Warning | ABR | Big Stone, Traverse | 24 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2009Every severe thunderstorm warning 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; radar from the NEXRAD Level II archive.