Alert archive / South Dakota / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 259, NWS Aberdeen, SD
NWS Aberdeen, SD issued this severe thunderstorm warning at Aug 30, 2020, 7:45 PM CDT for Hand County, Spink County, South Dakota. It was in force for 22 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
- Aug 30, 2020, 7:45 PM CDT (00:45 UTC)
- Expired
- Aug 30, 2020, 8:07 PM CDT
- In force
- 22 min
- Issued by
- NWS Aberdeen, SD
- Area
- Storm-based polygon
- Hail
- 1.5 in
- Wind
- 50.0 mph
Counties Hand County, SD, Spink County, SD
The radar
The Aberdeen radar (KABR), 82 km from the middle of the area, began a volume at 00:46 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 |
|---|---|---|---|
| Aug 30, 4:55 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 0.8 hours before the alert went out and 28 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
- 5 J/kg
- Mixed-layer CIN
- -191 J/kg
- Mixed-layer LCL
- 914 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- -18 m²/s²
- 0-3 km storm-relative helicity
- 97 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -1.2
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 Aug 30, 6:55 PM CDT, 50 minutes earlier.
Area forecast discussion, Aug 30, 6:55 PM CDT, 50 minutes before
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</html>Hazardous weather outlook, Aug 30, 3:25 PM CDT, 4 hours 20 minutes before
Hazardous Weather Outlook National Weather Service Aberdeen SD 325 PM CDT Sun Aug 30 2020 MNZ039-046-SDZ005>008-010-011-017>023-036-037-051-312030- Traverse-Big Stone-McPherson-Brown-Marshall-Roberts-Edmunds-Day- Faulk-Spink-Clark-Codington-Grant-Hamlin-Deuel-Hyde-Hand-Buffalo- 325 PM CDT Sun Aug 30 2020 This Hazardous Weather Outlook is for west central Minnesota, central South Dakota, north central South Dakota and northeast South Dakota. .DAY ONE...This afternoon and tonight. Thunderstorms are later this afternoon through this evening. Some storms will become severe. Large hail and damaging winds over 60 mph are expected with any severe storms. A tornado or two will also be possible. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation may be requested. Weather spotters are encouraged to submit reports to the National Weather Service in Aberdeen. The public can submit reports on our web page, Facebook page, or our Twitter feed. SDZ003-004-009-015-016-033>035-045-048-312030- Corson-Campbell-Walworth-Dewey-Potter-Stanley-Sully-Hughes-Jones- Lyman- 325 PM CDT Sun Aug 30 2020 /225 PM MDT Sun Aug 30 2020/ This Hazardous Weather Outlook is for central South Dakota and north central South Dakota. .DAY ONE...This afternoon and tonight. Strong northwesterly winds can be expected this afternoon with gusts of around 45 mph. The winds, along with afternoon RH values of 35 to 40 percent will promote high grassland fire danger. .DAYS TWO THROUGH SEVEN...Monday through Saturday. No hazardous weather is expected at this time. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. KF
In the hours before
Local storm report, Aug 30, 6:17 PM CDT, 1 hour 28 minutes before
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</html>Local storm report, Aug 30, 6:27 PM CDT, 1 hour 18 minutes before
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</html>Local storm report, Aug 30, 6:30 PM CDT, 1 hour 15 minutes before
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</html>Local storm report, Aug 30, 6:38 PM CDT, 1 hour 7 minutes before
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</html>Local storm report, Aug 30, 6:47 PM CDT, 58 minutes before
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</html>Local storm report, Aug 30, 6:54 PM CDT, 51 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 |
|---|---|---|---|---|
| Aug 30, 7:33 PM CDT | Severe Thunderstorm Warning | ABR | Hand, Spink | 30 min |
| Aug 30, 7:42 PM CDT | Special Weather Statement | ABR | Codington | 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.