Alert archive / South Dakota / Severe Thunderstorm Warnings in 2020
Severe Thunderstorm Warning 29, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 6, 2020, 6:01 PM CDT for 5 counties in South Dakota. It was in force for 44 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
- Jun 6, 2020, 6:01 PM CDT (23:01 UTC)
- Expired
- Jun 6, 2020, 6:45 PM CDT
- In force
- 44 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
Counties Lake County, SD, McCook County, SD, Miner County, SD, Minnehaha County, SD, Moody County, SD
The radar
The Sioux Falls radar (KFSD), 45 km from the middle of the area, began a volume at 23:02 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
Aberdeen, SD (KABR), launched 12:00Z, 11.0 hours before the alert went out and 152 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
- 2332 m above ground
- 0-6 km bulk shear
- 42 kt
- 0-1 km storm-relative helicity
- 253 m²/s²
- 0-3 km storm-relative helicity
- 425 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 Sioux Falls, SD wrote its last area forecast discussion before this severe thunderstorm warning went out at Jun 6, 4:04 PM CDT, 1 hour 57 minutes earlier.
Area forecast discussion, Jun 6, 4:04 PM CDT, 1 hour 57 minutes before
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</html>Hazardous weather outlook, Jun 6, 7:54 AM CDT, 10 hours 7 minutes before
Hazardous Weather Outlook National Weather Service Sioux Falls SD 754 AM CDT Sat Jun 6 2020 SDZ038-039-050-052>054-057>060-063>065-071300- Beadle-Kingsbury-Gregory-Jerauld-Sanborn-Miner-Brule-Aurora-Davison- Hanson-Charles Mix-Douglas-Hutchinson- 754 AM CDT Sat Jun 6 2020 This Hazardous Weather Outlook is for central South Dakota, east central South Dakota, south central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. Isolated thunderstorms will be possible later this morning through early afternoon, mainly north of Interstate 90. A few storms could produce hail up to half dollar size and winds to 65 mph. While storms are highly unlikely late afternoon and early evening, any storms which do develop would be capable of large hail to golf ball size, winds to 70 mph and even an isolated tornado. The better chance for storms mainly near/west of the James River will spread in later this evening and early in the overnight with a threat for hail up to quarter size and winds to 70 mph. .DAYS TWO THROUGH SEVEN...Sunday through Friday. A few storms will be possible again Sunday evening, which could produce large hail and damaging wind. More storms on Monday afternoon and Monday night will be capable of being severe as well, along with producing areas of heavy rainfall and potentially some flash flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ001-012-MNZ071-072-080-097-098-NEZ013-SDZ040-055-056-061-062- 066>071-071300- Lyon-Sioux-Lincoln-Murray-Pipestone-Rock-Dixon-Brookings-Lake-Moody- McCook-Minnehaha-Turner-Bon Homme-Yankton-Clay-Union- 754 AM CDT Sat Jun 6 2020 This Hazardous Weather Outlook is for northwest Iowa, southwest Minnesota, northeast Nebraska, east central South Dakota and southeast South Dakota. .DAY ONE...Today and tonight. An isolated thunderstorm is possible during the afternoon north of Interstate 90, with a small chance to produce hail up to quarter size or damaging winds to 60 mph. While storms are quite unlikely south of Interstate 90 later today, if a storm manages to develop toward early evening, it would likely be severe with large hail, damaging wind or a tornado. .DAYS TWO THROUGH SEVEN...Sunday through Friday. A small chance for a thunderstorm will occur Sunday night north of Interstate 90, with a threat for a severe storm toward Highway 14. Additional storms will develop later Monday afternoon, with some likely to be severe. More persistent showers and storms will continue through Monday night into Tuesday, which will be capable of very heavy rainfall and potential flash flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time. IAZ002-003-013-014-020>022-031-032-MNZ081-089-090-NEZ014-071300- Osceola-Dickinson-O'Brien-Clay-Plymouth-Cherokee-Buena Vista- Woodbury-Ida-Cottonwood-Nobles-Jackson-Dakota- 754 AM CDT Sat Jun 6 2020 This Hazardous Weather Outlook is for northwest Iowa, west central Iowa, southwest Minnesota and northeast Nebraska. .DAY ONE...Today and tonight. No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Sunday through Friday. Thunderstorms will develop later Monday night and continue at times through Tuesday night. A few storms may be severe on Tuesday, but there is a higher probability that storms would produce heavy rainfall and potentially flash flooding. .SPOTTER INFORMATION STATEMENT... Spotter activation is not expected at this time.
In the hours before
Local storm report, Jun 6, 1:00 PM CDT, 5 hours 1 minute before
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</html>Local storm report, Jun 6, 1:34 PM CDT, 4 hours 27 minutes before
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</html>Local storm report, Jun 6, 2:11 PM CDT, 3 hours 50 minutes before
PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
211 PM CDT SAT JUN 6 2020
..TIME... ...EVENT... ...CITY LOCATION... ...LAT.LON...
..DATE... ....MAG.... ..COUNTY LOCATION..ST.. ...SOURCE....
..REMARKS..
0112 PM HAIL 1 ENE RAVINIA 43.14N 98.41W
06/06/2020 E0.75 INCH CHARLES MIX SD PUBLIC
REPORTED AT 38862 HWY 50 RAVINIA SD.
&&The office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 6, 6:05 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 25 min |
| Jun 6, 6:26 AM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Douglas, Gregory | 38 min |
| Jun 6, 12:30 PM CDT | Severe Thunderstorm Warning | FSD | Charles Mix, Gregory | 45 min |
| Jun 6, 1:10 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Charles Mix, Douglas | 22 min |
| Jun 6, 5:12 PM CDT | Severe Thunderstorm Warning | FSD | Miner | 48 min |
| Jun 6, 6:38 PM CDT | Severe Thunderstorm Warning | FSD | Lake, Minnehaha, Moody | 37 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.