Alert archive / South Dakota / Tornado Warnings in 2020
Tornado Warning 13, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Aug 28, 2020, 1:19 AM CDT for Kingsbury County, South Dakota. It was in force for 26 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
- Aug 28, 2020, 1:19 AM CDT (06:19 UTC)
- Expired
- Aug 28, 2020, 1:45 AM CDT
- In force
- 26 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Kingsbury County, SD
The radar
The Sioux Falls radar (KFSD), 103 km from the middle of the area, began a volume at 06:20 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 27, 10:20 PM CDT | Severe Thunderstorm Watch | SPC | 5 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 6.3 hours before the alert went out and 94 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
- 451 J/kg
- Mixed-layer CIN
- -200 J/kg
- Mixed-layer LCL
- 1389 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 140 m²/s²
- 0-3 km storm-relative helicity
- 218 m²/s²
- Significant tornado parameter
- -0.0
- Supercell composite
- -0.1
The text
As transmitted.
558
WFUS53 KFSD 280619
TORFSD
SDC077-280645-
/O.NEW.KFSD.TO.W.0013.200828T0619Z-200828T0645Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
119 AM CDT Fri Aug 28 2020
The National Weather Service in Sioux Falls has issued a
* Tornado Warning for...
Southern Kingsbury County in east central South Dakota...
* Until 145 AM CDT.
* At 118 AM CDT, severe thunderstorms capable of producing both
tornadoes and extensive straight line wind damage were located 7
miles southeast of Iroquois, or 15 miles west of Lake Thompson
State Recreation Area, moving east at 70 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed.
Damage to roofs, windows, and vehicles will occur. Tree
damage is likely.
* These dangerous storms will be near...
Lake Thompson State Recreation Area and De Smet around 130 AM CDT.
Lake Preston around 135 AM CDT.
Hetland around 140 AM CDT.
Arlington around 145 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4422 9785 4434 9784 4447 9713 4425 9713
TIME...MOT...LOC 0618Z 262DEG 59KT 4428 9776
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
Schumacher1 follow-up statement
306
WWUS53 KFSD 280631
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
131 AM CDT Fri Aug 28 2020
SDC077-280645-
/O.CON.KFSD.TO.W.0013.000000T0000Z-200828T0645Z/
Kingsbury SD-
131 AM CDT Fri Aug 28 2020
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 145 AM CDT FOR SOUTHERN
KINGSBURY COUNTY...
At 131 AM CDT, a severe squall line capable of producing both
tornadoes and extensive straight line wind damage was located over
Lake Thompson State Recreation Area, moving east at 60 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
These dangerous storms will be near...
Lake Preston around 140 AM CDT.
Hetland around 145 AM CDT.
Arlington around 150 AM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
Tornadoes are extremely difficult to see and confirm at night. Do not
wait to see or hear the tornado. TAKE COVER NOW!
This cluster of thunderstorms is capable of producing tornadoes and
widespread significant wind damage. Do not wait to see or hear the
tornado. For your protection move to an interior room on the lowest
floor of a building.
&&
LAT...LON 4422 9785 4434 9784 4447 9713 4425 9713
TIME...MOT...LOC 0631Z 253DEG 54KT 4434 9751
TORNADO...RADAR INDICATED
HAIL...<.75IN
$$
SGThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 12:27 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Jerauld, Sanborn | 63 min |
| Aug 28, 1:02 AM CDT | Severe Thunderstorm Warning | FSD | Beadle, Sanborn | 28 min |
| Aug 28, 1:05 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Davison, Sanborn | 25 min |
| Aug 28, 1:09 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Kingsbury, Lake, Miner | 66 min |
| Aug 28, 1:22 AM CDT | Tornado Warning | FSD | Kingsbury | 38 min |
| Aug 28, 1:28 AM CDT | Severe Thunderstorm Warning | FSD | Hanson, McCook | 62 min |
| Aug 28, 1:50 AM CDT | Tornado Warning | FSD | Brookings, Kingsbury | 25 min |
| Aug 28, 2:01 AM CDT | Severe Thunderstorm Warning | FSD | Brookings, Lake, Moody | 59 min |
| Aug 28, 2:15 AM CDT | Tornado Warning | FSD | Brookings | 30 min |
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.