Alert archive / South Dakota / Severe Thunderstorm Warnings in 2007
Severe Thunderstorm Warning 125, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 1, 2007, 5:21 PM MDT for Corson County, Dewey County, South Dakota. It was in force for 54 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 1, 2007, 5:21 PM MDT (23:21 UTC)
- Expired
- Jul 1, 2007, 6:15 PM MDT
- In force
- 54 min
- Issued by
- NWS Aberdeen, SD
- Area
- Counties, with a storm outline in the text
Counties Corson County, SD, Dewey County, SD
The radar
The Bismarck radar (KBIS), 150 km from the middle of the area, began a volume at 23:24 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 watch it was issued in
The SPC watch in force over the same counties when this warning went out.
| Issued | Product | Office | Lasted |
|---|---|---|---|
| Jul 1, 3:02 PM MDT | Tornado Watch | SPC | 8 hr |
| Jul 1, 4:53 PM MDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Bismarck Municip, ND (KBIS), launched 12:00Z, 11.4 hours before the alert went out and 151 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
- 654 J/kg
- Mixed-layer CIN
- -455 J/kg
- Mixed-layer LCL
- 1180 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 153 m²/s²
- 0-3 km storm-relative helicity
- 135 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
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 1, 2:17 PM MDT, 3 hours 4 minutes earlier.
Area forecast discussion, Jul 1, 2:17 PM MDT, 3 hours 4 minutes before
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</html>Hazardous weather outlook, Jul 1, 4:06 AM MDT, 13 hours 15 minutes before
HAZARDOUS WEATHER OUTLOOK NATIONAL WEATHER SERVICE ABERDEEN SD 506 AM CDT SUN JUL 1 2007 MNZ039-046-SDZ003>011-015>023-033>037-045-048-051-021015- 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- 506 AM CDT SUN JUL 1 2007 /406 AM MDT SUN JUL 1 2007/ 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 THUNDERSTORMS MAY SKIRT THE FAR NORTHEAST CORNER OF SOUTH DAKOTA...INCLUDING WEST CENTRAL MINNESOTA...LATE TONIGHT...MAINLY ALONG AND NORTH OF A LINE FROM MCLAUGHLIN TO MILBANK. SEVERE THUNDERSTORMS ARE NOT ANTICIPATED TODAY OR TONIGHT. .DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY BY MONDAY EVENING...MORE THUNDERSTORMS MAY DEVELOP ALONG A COLD FRONT SLIPPING SOUTHWARD ACROSS CENTRAL SOUTH DAKOTA STRETCHING EASTWARD INTO EAST CENTRAL SOUTH DAKOTA MONDAY NIGHT. THUNDERSTORMS WOULD LIKELY DEVELOP JUST NORTH AND WEST OF THIS FORECAST AREA AFTER 7 PM CDT MONDAY EVENING...AND MOVE SOUTH AND EAST INTO THIS FORECAST AREA. LARGE HAIL...DAMAGING WINDS AND AN ISOLATED TORNADO ARE THE THREATS ASSOCIATED WITH THUNDERSTORMS THAT DEVELOP MONDAY EVENING AND MONDAY NIGHT. A SECONDARY COLD FRONTAL BOUNDARY WILL SWEEP THROUGH THE FORECAST AREA TUESDAY EVENING AND NIGHT...ONCE AGAIN...INTRODUCING THE POTENTIAL FOR A FEW THUNDERSTORMS TO DEVELOP...WITH LARGE HAIL BEING THE MAIN THREAT TUESDAY NIGHT. .SPOTTER INFORMATION STATEMENT... SPOTTER ACTIVATION IS NOT ANTICIPATED TODAY OR TONIGHT. DORN
Nearby
Severe Thunderstorm Warnings in South Dakota, 2007Every severe thunderstorm warning in 2007
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.