Alert archive / South Dakota / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 175, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Jul 25, 2020, 4:07 PM MDT for Corson County, South Dakota. It was in force for 38 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 25, 2020, 4:07 PM MDT (22:07 UTC)
- Expired
- Jul 25, 2020, 4:45 PM MDT
- In force
- 38 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 1.25 in
- Wind
- 60.0 mph
County Corson County, SD
The radar
The Bismarck radar (KBIS), 123 km from the middle of the area, began a volume at 22:07 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
Bismarck Municip, ND (KBIS), launched 12:00Z, 10.1 hours before the alert went out and 124 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
- 1814 m above ground
- 0-6 km bulk shear
- 41 kt
- 0-1 km storm-relative helicity
- 40 m²/s²
- 0-3 km storm-relative helicity
- -69 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 25, 1:58 PM MDT, 2 hours 9 minutes earlier.
Area forecast discussion, Jul 25, 1:58 PM MDT, 2 hours 9 minutes before
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Hazardous Weather Outlook National Weather Service Aberdeen SD 213 PM CDT Sat Jul 25 2020 MNZ039-046-SDZ006>008-011-018>023-261915- Traverse-Big Stone-Brown-Marshall-Roberts-Day-Spink-Clark-Codington- Grant-Hamlin-Deuel- 213 PM CDT Sat Jul 25 2020 This Hazardous Weather Outlook is for west central Minnesota and northeast South Dakota. .DAY ONE...This afternoon and tonight. Heat index values of around 100 degrees are possible today. In addition, a few strong thunderstorms are possible tonight, although severe weather is not expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. A few thunderstorms may linger through Sunday morning and into the early afternoon hours. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. SDZ003-004-009-015-016-033>036-045-048-261915- Corson-Campbell-Walworth-Dewey-Potter-Stanley-Sully-Hughes-Hyde- Jones-Lyman- 213 PM CDT Sat Jul 25 2020 /113 PM MDT Sat Jul 25 2020/ This Hazardous Weather Outlook is for central South Dakota and north central South Dakota. .DAY ONE...This afternoon and tonight. A few thunderstorms are possible this afternoon and into the evening hours. Some of these storms could be strong to severe. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. SDZ005-010-017-037-051-261915- McPherson-Edmunds-Faulk-Hand-Buffalo- 213 PM CDT Sat Jul 25 2020 This Hazardous Weather Outlook is for central South Dakota and north central South Dakota. .DAY ONE...This afternoon and tonight. Heat index values of around 100 degrees are possible this afternoon. A few showers and thunderstorms are possible this evening and overnight. Some of these storms could be strong to severe. .DAYS TWO THROUGH SEVEN...Sunday through Friday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. Telken
In the hours before
Local storm report, Jul 25, 11:28 AM MDT, 4 hours 39 minutes before
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</html>Local storm report, Jul 25, 12:36 PM MDT, 3 hours 31 minutes before
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</html>The office that day
Everything else NWS Aberdeen, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 24, 9:04 PM MDT | Severe Thunderstorm Warning | ABR | Brown, McPherson | 41 min |
| Jul 24, 9:58 PM MDT | Areal Flood Warning | ABR | Brown, McPherson | 36 hr |
| Jul 24, 10:45 PM MDT | Flash Flood Warning | ABR | Brown, McPherson | 6 hr |
| Jul 25, 6:08 AM MDT | River Flood Warning | ABR | Brown | 4 days |
| Jul 25, 12:24 PM MDT | River Flood Warning | ABR | Brown | 4 days |
| Jul 25, 4:45 PM MDT | Severe Thunderstorm Warning | ABR | Corson | 60 min |
| Jul 25, 5:57 PM MDT | Severe Thunderstorm Warning | ABR | Campbell, Corson | 48 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2020Every severe thunderstorm warning in 2020
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.