Alert archive / South Dakota / Severe Thunderstorm Warnings in 2021
Severe Thunderstorm Warning 48, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this severe thunderstorm warning at Jul 8, 2021, 10:56 PM CDT for Yankton County, South Dakota. It was in force for 19 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
- Jul 8, 2021, 10:56 PM CDT (03:56 UTC)
- Expired
- Jul 8, 2021, 11:15 PM CDT
- In force
- 19 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Hail
- 1.0 in
- Wind
- 60.0 mph
County Yankton County, SD
The radar
The Sioux Falls radar (KFSD), 94 km from the middle of the area, began a volume at 03:59 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 8, 9:33 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 00:00Z, 3.9 hours before the alert went out and 190 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
- 155 J/kg
- Mixed-layer CIN
- -474 J/kg
- Mixed-layer LCL
- 1131 m above ground
- 0-6 km bulk shear
- 54 kt
- 0-1 km storm-relative helicity
- 200 m²/s²
- 0-3 km storm-relative helicity
- 406 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- -0.0
The text
As transmitted.
140
WUUS53 KFSD 090356
SVRFSD
SDC135-090415-
/O.NEW.KFSD.SV.W.0048.210709T0356Z-210709T0415Z/
BULLETIN - IMMEDIATE BROADCAST REQUESTED
Severe Thunderstorm Warning
National Weather Service Sioux Falls SD
1056 PM CDT Thu Jul 8 2021
The National Weather Service in Sioux Falls has issued a
* Severe Thunderstorm Warning for...
Southern Yankton County in southeastern South Dakota...
* Until 1115 PM CDT.
* At 1056 PM CDT, a severe thunderstorm was located over Utica, or
near Lewis And Clark State Recreation Area, moving southeast at 30
mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage
to roofs, siding, and trees.
* This severe thunderstorm will be near...
Yankton around 1105 PM CDT.
Mission Hill around 1115 PM CDT.
Other locations impacted by this severe thunderstorm include St.
Helena Boat Dock and Gayville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4285 9723 4285 9729 4287 9731 4285 9736
4287 9741 4285 9744 4286 9752 4291 9759
4303 9749 4288 9716 4287 9716 4281 9721
TIME...MOT...LOC 0356Z 300DEG 26KT 4294 9749
HAIL...1.00IN
WIND...60MPH
$$
APT1 follow-up statement
868
WWUS53 KFSD 090406
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
1106 PM CDT Thu Jul 8 2021
SDC135-090415-
/O.CON.KFSD.SV.W.0048.000000T0000Z-210709T0415Z/
Yankton SD-
1106 PM CDT Thu Jul 8 2021
...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 1115 PM CDT
FOR SOUTHERN YANKTON COUNTY...
At 1105 PM CDT, a severe thunderstorm was located over Yankton,
moving southeast at 30 mph.
HAZARD...60 mph wind gusts and quarter size hail.
SOURCE...Radar indicated.
IMPACT...Hail damage to vehicles is expected. Expect wind damage to
roofs, siding, and trees.
This severe storm will be near...
Mission Hill around 1115 PM CDT.
Other locations impacted by this severe thunderstorm include St.
Helena Boat Dock and Gayville.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
For your protection move to an interior room on the lowest floor of a
building.
&&
LAT...LON 4285 9723 4285 9729 4287 9731 4285 9736
4287 9741 4285 9744 4286 9752 4288 9755
4300 9743 4288 9716 4287 9716 4281 9721
TIME...MOT...LOC 0405Z 298DEG 27KT 4291 9740
HAIL...1.00IN
WIND...60MPH
$$
APTThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jul 8, 10:53 PM CDT | Severe Thunderstorm Warning | FSD | Bon Homme, Hutchinson, Turner, Yankton | 52 min |
| Jul 8, 11:11 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Yankton | 34 min |
| Jul 8, 11:21 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Hutchinson, Lincoln, Turner, Yankton | 39 min |
| Jul 8, 11:50 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 40 min |
| Jul 8, 11:59 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Lincoln, Turner, Union | 46 min |
| Jul 9, 12:44 AM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 46 min |
| Jul 9, 12:46 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 44 min |
| Jul 9, 1:22 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Davison, Jerauld, Sanborn | 38 min |
| Jul 9, 2:15 AM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Union | 45 min |
| Jul 9, 2:34 AM CDT | Severe Thunderstorm Warning | FSD | Hanson, Lake, McCook, Miner | 41 min |
Nearby
Severe Thunderstorm Warnings in South Dakota, 2021Every severe thunderstorm warning 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.