Alert archive / South Dakota / Tornado Warnings in 2020
Tornado Warning 7, NWS Rapid City, SD
NWS Rapid City, SD issued this tornado warning at Jul 10, 2020, 6:25 PM MDT for Bennett County, Oglala Lakota County, South Dakota. It was in force for 50 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 10, 2020, 6:25 PM MDT (00:25 UTC)
- Expired
- Jul 10, 2020, 7:15 PM MDT
- In force
- 50 min
- Issued by
- NWS Rapid City, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 1.75 in
Counties Bennett County, SD, Oglala Lakota County, SD
The radar
The Rapid City radar (KUDX), 112 km from the middle of the area, began a volume at 00:26 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 10, 1:08 PM MDT | Severe Thunderstorm Watch | SPC | 8 hr |
The nearest sounding before it
Rapid City, SD (KUNR), launched 00:00Z, 0.4 hours before the alert went out and 109 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
- 235 J/kg
- Mixed-layer CIN
- -359 J/kg
- Mixed-layer LCL
- 1287 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 24 m²/s²
- 0-3 km storm-relative helicity
- 191 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.1
What forecasters said that day
The local office's own words before this tornado warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.
NWS Rapid City, SD wrote its last area forecast discussion before this tornado warning went out at Jul 10, 5:38 PM MDT, 47 minutes earlier.
Area forecast discussion, Jul 10, 5:38 PM MDT, 47 minutes before
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</html>Hazardous weather outlook, Jul 10, 5:03 AM MDT, 13 hours 22 minutes before
Hazardous Weather Outlook National Weather Service Rapid City SD 503 AM MDT Fri Jul 10 2020 SDZ001-002-012>014-031-032-043-044-046-047-049-073-111300- Harding-Perkins-Butte-Northern Meade Co Plains-Ziebach- Pennington Co Plains-Haakon-Jackson-Bennett-Mellette-Todd-Tripp- Southern Meade Co Plains- 503 AM MDT Fri Jul 10 2020 /603 AM CDT Fri Jul 10 2020/ This Hazardous Weather Outlook is for portions of western South Dakota. .DAY ONE...Today and Tonight Severe thunderstorms are expected today. Large hail, damaging winds, and isolated tornadoes will be possible with these storms. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Additional thunderstorms will be possible from Sunday night through early next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity SDZ024>030-041-042-072-074-WYZ054-056>058-071-111300- Northern Black Hills-Northern Foot Hills-Rapid City- Southern Foot Hills-Central Black Hills-Southern Black Hills- Custer Co Plains-Fall River-Oglala Lakota- Sturgis/Piedmont Foot Hills-Hermosa Foot Hills-Northern Campbell- Western Crook-Wyoming Black Hills-Weston-Northeastern Crook- 503 AM MDT Fri Jul 10 2020 This Hazardous Weather Outlook is for portions of northwestern South Dakota...southwestern South Dakota...the Black Hills of South Dakota...northeast Wyoming...and the Black Hills of Wyoming. .DAY ONE...Today and Tonight Thunderstorms are expected today, some of which could be severe. Large hail and damaging winds are possible from these storms. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Additional thunderstorms will be possible from Sunday night through early next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity WYZ055-111300- Southern Campbell- 503 AM MDT Fri Jul 10 2020 This Hazardous Weather Outlook is for portions of northeast Wyoming. .DAY ONE...Today and Tonight No hazardous weather is expected at this time. .DAYS TWO THROUGH SEVEN...Saturday through Thursday Additional thunderstorms will be possible from Sunday night through much of next week. .SPOTTER INFORMATION STATEMENT... Spotter activation will not be needed today. && Stay tuned to NOAA weather radio for further updates...or check our web site at weather.gov/rapidcity
In the hours before
Local storm report, Jul 10, 5:37 PM MDT, 48 minutes before
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</html>Local storm report, Jul 10, 5:41 PM MDT, 44 minutes before
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</html>Local storm report, Jul 10, 5:43 PM MDT, 42 minutes before
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</html>Local storm report, Jul 10, 5:46 PM MDT, 39 minutes before
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</html>Local storm report, Jul 10, 5:53 PM MDT, 32 minutes before
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</html>The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 10, 6:00 PM MDT | Special Weather Statement | UNR | Custer | 45 min |
| Jul 10, 6:12 PM MDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Oglala Lakota | 78 min |
| Jul 10, 7:19 PM MDT | Severe Thunderstorm Warning | UNR | Bennett, Jackson, Mellette, Todd | 56 min |
| Jul 10, 7:27 PM MDT | Special Weather Statement | UNR | Tripp | 48 min |
| Jul 10, 7:38 PM MDT | Special Weather Statement | UNR | Perkins | 52 min |
| Jul 10, 7:42 PM MDT | Special Weather Statement | UNR | Bennett | 33 min |
| Jul 10, 8:11 PM MDT | Special Weather Statement | UNR | Todd | 34 min |
| Jul 11, 1:28 AM MDT | Fire Weather Watch | UNR | Campbell, Crook, Weston | 24 hr |
Nearby
Tornado Warnings in South Dakota, 2020Every tornado warning in 2020Tornadoes 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.