Alert archive / South Dakota / Tornado Warnings in 2021
Tornado Warning 8, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at Aug 28, 2021, 4:23 PM CDT for Lincoln County, Turner County, South Dakota. It was in force for 37 min. 6 reports came from inside the area while it was in force.
The area
The outline as issued, with what was reported inside it.
The facts
- Issued
- Aug 28, 2021, 4:23 PM CDT (21:23 UTC)
- Expired
- Aug 28, 2021, 5:00 PM CDT
- In force
- 37 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 2.0 in
Counties Lincoln County, SD, Turner County, SD
The radar
The Sioux Falls radar (KFSD), 25 km from the middle of the area, began a volume at 21:24 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.
What was reported inside it
| Time | Report | Where | Remark |
|---|---|---|---|
| Aug 28, 4:24 PM CDT | TSTM WND GST 72 | Lennox, SD | DELAYED REPORT. PERSONAL WEATHER STATION REPORTED GUST OF 72 MPH. |
| Aug 28, 4:30 PM CDT | TSTM WND DMG | 4 Nnw Worthing, SD | REPORT VIA SOCIAL MEDIA OF 2 SEMI TRUCKS FLIPPED OVER A LITTLE SOUTH OF I-29 EXIT 68. |
| Aug 28, 4:40 PM CDT | TSTM WND DMG | Harrisburg, SD | REPORT VIA SOCIAL MEDIA OF TREE DAMAGE IN HARRISBURG. |
| Aug 28, 4:40 PM CDT | TSTM WND GST 61 | 1 Ssw Harrisburg, SD | CORRECTS PREVIOUS TSTM WND GST REPORT FROM 1 SSW HARRISBURG FOR INCORRECT TIME. DELAYED REPORT. PERSONAL WEATHER STATION REPORTED GUST OF 61 MPH. |
| Aug 28, 4:45 PM CDT | FUNNEL CLOUD | 2 E Harrisburg, SD | ROTATION NOTICED IN CLOUDS OVERHEAD, AND SURFACE WINDS SEEMED TO BE BLOWING UPWARD. |
| Aug 28, 4:45 PM CDT | TSTM WND GST 70 | 2 E Harrisburg, SD | BRANCHES ON COTTONWOOD TREE BLOWN UPWARD AND OFF, LANDING ON ROOF OF HOUSE. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
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 28, 3:57 PM CDT | Severe Thunderstorm Watch | SPC | 7 hr |
The nearest sounding before it
Aberdeen, SD (KABR), launched 12:00Z, 9.4 hours before the alert went out and 210 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
- 9 J/kg
- Mixed-layer CIN
- -334 J/kg
- Mixed-layer LCL
- 1540 m above ground
- 0-6 km bulk shear
- 61 kt
- 0-1 km storm-relative helicity
- 25 m²/s²
- 0-3 km storm-relative helicity
- 558 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.9
The text
As transmitted.
698
WFUS53 KFSD 282123
TORFSD
SDC083-125-282200-
/O.NEW.KFSD.TO.W.0008.210828T2123Z-210828T2200Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
423 PM CDT Sat Aug 28 2021
The National Weather Service in Sioux Falls has issued a
* Tornado Warning for...
Northwestern Lincoln County in southeastern South Dakota...
Northeastern Turner County in southeastern South Dakota...
* Until 500 PM CDT.
* At 423 PM CDT, severe thunderstorms capable of producing both
tornadoes and extensive straight line wind damage were located over
Lennox, or 11 miles east of Parker, moving east at 40 mph.
HAZARD...Tornado and hail up to two inches in diameter.
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...
Worthing around 435 PM CDT.
Harrisburg around 440 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Lake Alvin State Recreation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4339 9701 4350 9661 4331 9656 4329 9700
TIME...MOT...LOC 2123Z 256DEG 36KT 4335 9691
TORNADO...RADAR INDICATED
MAX HAIL SIZE...2.00 IN
$$
Kalin3 follow-up statements
977
WWUS53 KFSD 282128
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
428 PM CDT Sat Aug 28 2021
SDC125-282137-
/O.CAN.KFSD.TO.W.0008.000000T0000Z-210828T2200Z/
Turner SD-
428 PM CDT Sat Aug 28 2021
...THE TORNADO WARNING FOR NORTHEASTERN TURNER COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has ! moved out
of the warned area. Therefore, the warning has been cancelled.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northwestern Iowa...and southeastern South Dakota.
LAT...LON 4340 9692 4350 9661 4331 9656 4331 9692
TIME...MOT...LOC 2127Z 256DEG 36KT 4336 9685
$$
SDC083-282200-
/O.CON.KFSD.TO.W.0008.000000T0000Z-210828T2200Z/
Lincoln SD-
428 PM CDT Sat Aug 28 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR
NORTHWESTERN LINCOLN COUNTY...
At 427 PM CDT, a confirmed tornado was located over Lennox, or 13
miles southwest of Sioux Falls, moving east at 40 mph.
HAZARD...Damaging tornado and two inch hail.
SOURCE...Radar confirmed tornado.
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.
This tornado will be near...
Harrisburg around 440 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Lake Alvin State Recreation Area.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4340 9692 4350 9661 4331 9656 4331 9692
TIME...MOT...LOC 2127Z 256DEG 36KT 4336 9685
TORNADO...OBSERVED
MAX HAIL SIZE...2.00 IN
$$
Kalin014
WWUS53 KFSD 282137
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
437 PM CDT Sat Aug 28 2021
SDC083-282200-
/O.CON.KFSD.TO.W.0008.000000T0000Z-210828T2200Z/
Lincoln SD-
437 PM CDT Sat Aug 28 2021
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 500 PM CDT FOR NORTH
CENTRAL LINCOLN COUNTY...
At 436 PM CDT, a confirmed tornado was located south of Harrisburg,
or north of Canton, moving east at 55 mph.
HAZARD...Damaging tornado and golf ball size hail.
SOURCE...Radar confirmed tornado.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornado will be near...
Lake Alvin State Recreation Area around 440 PM CDT.
Canton around 445 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
To repeat, a tornado is on the ground. TAKE COVER NOW! Move to a
basement or an interior room on the lowest floor of a sturdy
building. Avoid windows. If you are outdoors, in a mobile home, or in
a vehicle, move to the closest substantial shelter and protect
yourself from flying debris.
&&
LAT...LON 4342 9680 4350 9661 4331 9656 4332 9679
TIME...MOT...LOC 2136Z 262DEG 50KT 4337 9668
TORNADO...OBSERVED
MAX HAIL SIZE...1.75 IN
$$
Kalin098
WWUS53 KFSD 282153
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
453 PM CDT Sat Aug 28 2021
SDC083-282203-
/O.EXP.KFSD.TO.W.0008.000000T0000Z-210828T2200Z/
Lincoln SD-
453 PM CDT Sat Aug 28 2021
...THE TORNADO WARNING FOR NORTH CENTRAL LINCOLN COUNTY WILL EXPIRE
AT 500 PM CDT...
The storm which prompted the warning has moved out of the area.
Therefore, the warning will be allowed to expire.
A Severe Thunderstorm Watch remains in effect until 900 PM CDT for
northwestern Iowa...and southeastern South Dakota.
LAT...LON 4342 9680 4350 9661 4331 9656 4332 9679
TIME...MOT...LOC 2153Z 256DEG 36KT 4341 9647
$$
KalinThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Aug 28, 3:21 PM CDT | Severe Thunderstorm Warning | FSD | Lake, McCook, Miner, Minnehaha, Moody | 24 min |
| Aug 28, 3:56 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner, Yankton | 49 min |
| Aug 28, 4:23 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Turner | 37 min |
| Aug 28, 4:33 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 42 min |
| Aug 28, 4:39 PM CDT | Tornado Warning | FSD | Lincoln | 36 min |
| Aug 28, 4:45 PM CDT | Tornado Warning | FSD | Lincoln, Minnehaha | 30 min |
| Aug 28, 5:00 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 45 min |
| Aug 28, 6:14 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Lake, McCook | 31 min |
| Aug 28, 6:15 PM CDT | Severe Thunderstorm Warning | FSD | Minnehaha, Moody | 45 min |
| Aug 28, 6:17 PM CDT | Severe Thunderstorm Warning | FSD | Hutchinson, McCook, Turner | 43 min |
| Aug 28, 6:44 PM CDT | Severe Thunderstorm Warning | FSD | Davison, Hanson, Lake, McCook, Miner, Sanborn | 46 min |
| Aug 28, 6:44 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 46 min |
| Aug 28, 6:48 PM CDT | Severe Thunderstorm Warning | FSD | Hanson, Lake, McCook, Minnehaha | 42 min |
| Aug 28, 6:53 PM CDT | Severe Thunderstorm Warning | FSD | Lincoln, Minnehaha | 52 min |
Nearby
Tornado Warnings in South Dakota, 2021Every tornado warning in 2021Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.