Alert archive / Iowa / Tornado Warnings in 2024
Tornado Warning 13, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 6, 2024, 8:10 PM CDT for Lyon County, Iowa; Rock County, Minnesota; Minnehaha County, South Dakota. It was in force for 35 min. 2 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
- May 6, 2024, 8:10 PM CDT (01:10 UTC)
- Expired
- May 6, 2024, 8:45 PM CDT
- In force
- 35 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
Counties Lyon County, IA, Rock County, MN, Minnehaha County, SD
The radar
The Sioux Falls radar (KFSD), 27 km from the middle of the area, began a volume at 01:11 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 |
|---|---|---|---|
| May 6, 8:14 PM CDT | TSTM WND DMG | Valley Springs, SD | Livestock shelter blown down. Time estimated from radar. |
| May 6, 8:17 PM CDT | TSTM WND DMG | 3 W Sherman, SD | Multiple tree branches (several inches in diameter) down. Report via social media - time estimated with radar. |
Local storm reports filed while the alert was in force, from inside its polygon or its counties.
The nearest sounding before it
Aberdeen, SD (KABR), launched 00:00Z, 1.2 hours before the alert went out and 209 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
- 111 J/kg
- Mixed-layer CIN
- -56 J/kg
- Mixed-layer LCL
- 927 m above ground
- 0-6 km bulk shear
- 40 kt
- 0-1 km storm-relative helicity
- 229 m²/s²
- 0-3 km storm-relative helicity
- 332 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 2.6
The text
As transmitted.
697
WFUS53 KFSD 070110
TORFSD
IAC119-MNC133-SDC099-070145-
/O.NEW.KFSD.TO.W.0013.240507T0110Z-240507T0145Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
810 PM CDT Mon May 6 2024
The National Weather Service in Sioux Falls has issued a
* Tornado Warning for...
Northwestern Lyon County in northwestern Iowa...
Northwestern Rock County in southwestern Minnesota...
Eastern Minnehaha County in southeastern South Dakota...
* Until 845 PM CDT.
* At 810 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Rowena, or 10 miles east of Sioux Falls, moving
northeast at 55 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.
* This dangerous storm will be near...
Brandon, Garretson, Valley Springs, Beaver Creek, Palisades State
Park, and Corson around 815 PM CDT.
Sherman around 820 PM CDT.
Jasper around 825 PM CDT.
Hardwick around 830 PM CDT.
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 4384 9614 4347 9649 4349 9659 4350 9661
4385 9653
TIME...MOT...LOC 0110Z 202DEG 47KT 4353 9652
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
SST3 follow-up statements
263
WWUS53 KFSD 070119
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
819 PM CDT Mon May 6 2024
IAC119-070128-
/O.CAN.KFSD.TO.W.0013.000000T0000Z-240507T0145Z/
Lyon IA-
819 PM CDT Mon May 6 2024
...THE TORNADO WARNING FOR NORTHWESTERN LYON COUNTY IS CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
&&
LAT...LON 4353 9643 4357 9659 4385 9653 4384 9614
TIME...MOT...LOC 0118Z 202DEG 47KT 4364 9646
$$
MNC133-SDC099-070145-
/O.CON.KFSD.TO.W.0013.000000T0000Z-240507T0145Z/
Rock MN-Minnehaha SD-
819 PM CDT Mon May 6 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHWESTERN ROCK AND NORTHEASTERN MINNEHAHA COUNTIES...
At 818 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Valley Springs, or 12 miles west of Luverne, moving
north at 55 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.
This dangerous storm will be near...
Garretson, Jasper, and Sherman around 825 PM CDT.
Hardwick around 830 PM CDT.
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 4353 9643 4357 9659 4385 9653 4384 9614
TIME...MOT...LOC 0118Z 202DEG 47KT 4364 9646
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
SST775
WWUS53 KFSD 070129
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
829 PM CDT Mon May 6 2024
MNC133-SDC099-070145-
/O.CON.KFSD.TO.W.0013.000000T0000Z-240507T0145Z/
Rock MN-Minnehaha SD-
829 PM CDT Mon May 6 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHWESTERN ROCK AND NORTHEASTERN MINNEHAHA COUNTIES...
At 829 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Jasper, or 12 miles northwest of Luverne, moving
north at 55 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This dangerous storm will be near...
Jasper and Hardwick around 835 PM CDT.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4367 9630 4373 9656 4385 9653 4384 9614
TIME...MOT...LOC 0129Z 202DEG 47KT 4378 9638
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
SST623
WWUS53 KFSD 070138
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
838 PM CDT Mon May 6 2024
SDC099-070148-
/O.CAN.KFSD.TO.W.0013.000000T0000Z-240507T0145Z/
Minnehaha SD-
838 PM CDT Mon May 6 2024
...THE TORNADO WARNING FOR NORTHEASTERN MINNEHAHA COUNTY IS
CANCELLED...
The tornadic thunderstorm which prompted the warning has moved out
of the warned area. Therefore, the warning has been cancelled.
&&
LAT...LON 4372 9625 4377 9643 4385 9640 4384 9614
TIME...MOT...LOC 0138Z 202DEG 47KT 4390 9631
$$
MNC133-070145-
/O.CON.KFSD.TO.W.0013.000000T0000Z-240507T0145Z/
Rock MN-
838 PM CDT Mon May 6 2024
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 845 PM CDT FOR
NORTHWESTERN ROCK COUNTY...
At 838 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Trosky, or near Pipestone, moving north at 55 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
This tornadic thunderstorm will remain over mainly rural areas of
northwestern Rock County.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
&&
LAT...LON 4372 9625 4377 9643 4385 9640 4384 9614
TIME...MOT...LOC 0138Z 202DEG 47KT 4390 9631
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
SSTThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 6, 7:48 PM CDT | Tornado Warning | FSD | Lyon, Sioux | 27 min |
| May 6, 8:23 PM CDT | Tornado Warning | FSD | Pipestone | 37 min |
| May 6, 8:34 PM CDT | Tornado Warning | FSD | Murray, Pipestone, Rock | 26 min |
| May 6, 8:42 PM CDT | Tornado Warning | FSD | Lincoln, Pipestone | 33 min |
| May 6, 8:50 PM CDT | Tornado Warning | FSD | Murray, Nobles, Pipestone, Rock | 25 min |
| May 6, 8:57 PM CDT | Tornado Warning | FSD | Lincoln, Lyon, Murray, Pipestone | 18 min |
| May 6, 8:20 PM CDT | Tornado Warning | FSD | Brookings, Lake, Moody | 25 min |
| May 7, 10:11 AM CDT | Wind Advisory | FSD | Aurora, Brule, Charles Mix, Douglas, Gregory, Jerauld | 9 hr |
Nearby
Tornado Warnings in Iowa, 2024Tornado Warnings in Minnesota, 2024Tornado Warnings in South Dakota, 2024Every tornado warning in 2024Tornadoes in 2024
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.