Alert archive / South Dakota / Special Weather Statements in 2021
Special Weather Statement, NWS Rapid City, SD
NWS Rapid City, SD issued this special weather statement at Jun 19, 2021, 11:29 PM MDT for Ziebach County, South Dakota. It was in force for 46 min. No storm report in the archive falls inside the area while it was in force.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2021, 11:29 PM MDT (05:29 UTC)
- Expired
- Jun 20, 2021, 12:15 AM MDT
- In force
- 46 min
- Issued by
- NWS Rapid City, SD
County Ziebach County, SD
The radar
The Rapid City radar (KUDX), 104 km from the middle of the area, began a volume at 05:32 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
Rapid City, SD (KUNR), launched 00:00Z, 5.5 hours before the alert went out and 111 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
- 1152 J/kg
- Mixed-layer CIN
- -153 J/kg
- Mixed-layer LCL
- 2340 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 103 m²/s²
- 0-3 km storm-relative helicity
- 187 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 5.2
The text
As transmitted.
970 WWUS83 KUNR 200529 SPSUNR Special Weather Statement National Weather Service Rapid City SD 1129 PM MDT Sat Jun 19 2021 SDZ013-014-032-200615- Ziebach SD-Haakon SD-Northern Meade Co Plains SD- 1129 PM MDT Sat Jun 19 2021 ...STRONG THUNDERSTORM OVER NORTHERN HAAKON...SOUTHWESTERN ZIEBACH AND EAST CENTRAL MEADE COUNTIES... At 1129 PM MDT, Doppler radar was tracking a strong thunderstorm 5 miles west of Red Scaffold, or 18 miles south of Faith, moving east at 30 mph. Half inch hail and winds in excess of 40 mph will be possible with this storm. Locations impacted include... Red Scaffold and Takini. LAT...LON 4474 10206 4484 10198 4479 10144 4450 10159 TIME...MOT...LOC 0529Z 288DEG 28KT 4476 10196 $$ Helgeson
The office that day
Everything else NWS Rapid City, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 6:10 PM MDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 65 min |
| Jun 19, 6:52 PM MDT | Special Weather Statement | UNR | Pennington | 38 min |
| Jun 19, 6:57 PM MDT | Severe Thunderstorm Warning | UNR | Meade, Pennington | 30 min |
| Jun 19, 7:23 PM MDT | Special Weather Statement | UNR | Butte | 52 min |
| Jun 19, 7:28 PM MDT | Special Weather Statement | UNR | Pennington | 62 min |
| Jun 19, 7:48 PM MDT | Severe Thunderstorm Warning | UNR | Custer, Pennington | 57 min |
| Jun 19, 8:06 PM MDT | Severe Thunderstorm Warning | UNR | Jackson, Pennington | 54 min |
| Jun 19, 8:47 PM MDT | Special Weather Statement | UNR | Jackson | 43 min |
| Jun 19, 9:02 PM MDT | Special Weather Statement | UNR | Mellette | 58 min |
| Jun 19, 10:36 PM MDT | Special Weather Statement | UNR | Meade | 39 min |
| Jun 20, 12:23 AM MDT | Special Weather Statement | UNR | Haakon | 37 min |
Nearby
Special Weather Statements in South Dakota, 2021Every special weather statement in 2021
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.