Alert archive / Iowa / Tornado Warnings in 2023
Tornado Warning 4, NWS Sioux Falls, SD
NWS Sioux Falls, SD issued this tornado warning at May 13, 2023, 1:48 PM CDT for Buena Vista County, Iowa. It was in force for 27 min. 1 report 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 13, 2023, 1:48 PM CDT (18:48 UTC)
- Expired
- May 13, 2023, 2:15 PM CDT
- In force
- 27 min
- Issued by
- NWS Sioux Falls, SD
- Area
- Storm-based polygon
- Tornado
- Radar indicated
- Hail
- 0.75 in
County Buena Vista County, IA
The radar
The Sioux Falls radar (KFSD), 157 km from the middle of the area, began a volume at 18:48 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 13, 2:02 PM CDT | TORNADO | 3 Sw Lakeside, IA | BRIEF TOUCHDOWN. |
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 |
|---|---|---|---|
| May 13, 12:54 PM CDT | Tornado Watch | SPC | 7 hr |
The nearest sounding before it
Omaha, NE (KOAX), launched 12:00Z, 6.8 hours before the alert went out and 175 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 984 m above ground
- 0-6 km bulk shear
- 32 kt
- 0-1 km storm-relative helicity
- 51 m²/s²
- 0-3 km storm-relative helicity
- 105 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted.
849
WFUS53 KFSD 131848
TORFSD
IAC021-131915-
/O.NEW.KFSD.TO.W.0004.230513T1848Z-230513T1915Z/
BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
148 PM CDT Sat May 13 2023
The National Weather Service in Sioux Falls has issued a
* Tornado Warning for...
Southwestern Buena Vista County in northwestern Iowa...
* Until 215 PM CDT.
* At 148 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Lakeside, or near Storm Lake, moving north at 20
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...
Lakeside around 200 PM CDT.
Storm Lake around 205 PM CDT.
Other locations in the path of this tornadic thunderstorm include
Alta and Truesdale.
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.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4272 9538 4275 9516 4256 9510 4256 9532
TIME...MOT...LOC 1848Z 165DEG 16KT 4257 9521
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Weisser2 follow-up statements
067
WWUS53 KFSD 131902
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
202 PM CDT Sat May 13 2023
IAC021-131915-
/O.CON.KFSD.TO.W.0004.000000T0000Z-230513T1915Z/
Buena Vista IA-
202 PM CDT Sat May 13 2023
...A TORNADO WARNING REMAINS IN EFFECT UNTIL 215 PM CDT FOR
SOUTHWESTERN BUENA VISTA COUNTY...
At 202 PM CDT, a severe thunderstorm capable of producing a tornado
was located over Storm Lake, moving north at 15 mph.
HAZARD...Tornado.
SOURCE...Radar indicated rotation.
IMPACT...Flying debris will be dangerous to those caught without
shelter. Mobile homes will be damaged or destroyed. Damage
to roofs, windows, and vehicles will occur. Tree damage is
likely.
Locations impacted include...
Storm Lake, Alta and Truesdale.
PRECAUTIONARY/PREPAREDNESS ACTIONS...
TAKE COVER NOW! Move to a basement or an interior room on the lowest
floor of a sturdy building. Avoid windows. If you are outdoors, in a
mobile home, or in a vehicle, move to the closest substantial shelter
and protect yourself from flying debris.
Torrential rainfall is occurring with this storm, and may lead to
flash flooding. Do not drive your vehicle through flooded roadways.
&&
LAT...LON 4272 9538 4275 9516 4258 9511 4259 9529
TIME...MOT...LOC 1902Z 169DEG 13KT 4262 9522
TORNADO...RADAR INDICATED
MAX HAIL SIZE...<.75 IN
$$
Weisser188
WWUS53 KFSD 131913
SVSFSD
Severe Weather Statement
National Weather Service Sioux Falls SD
213 PM CDT Sat May 13 2023
IAC021-131923-
/O.EXP.KFSD.TO.W.0004.000000T0000Z-230513T1915Z/
Buena Vista IA-
213 PM CDT Sat May 13 2023
...THE TORNADO WARNING FOR SOUTHWESTERN BUENA VISTA COUNTY WILL
EXPIRE AT 215 PM CDT...
The storm which prompted the warning has weakened below severe
limits, and no longer appears capable of producing a tornado.
Therefore, the warning will be allowed to expire.
A Tornado Watch remains in effect until 700 PM CDT for northwestern
Iowa.
LAT...LON 4272 9538 4275 9516 4258 9511 4259 9529
TIME...MOT...LOC 1913Z 165DEG 16KT 4266 9524
$$
WeisserThe office that day
Everything else NWS Sioux Falls, SD issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 12, 7:27 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 33 min |
| May 12, 7:46 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 44 min |
| May 12, 7:50 PM CDT | Severe Thunderstorm Warning | FSD | Woodbury | 40 min |
| May 12, 7:55 PM CDT | Tornado Warning | FSD | Woodbury | 35 min |
| May 12, 8:16 PM CDT | Tornado Warning | FSD | Plymouth, Woodbury | 29 min |
| May 12, 8:17 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Sioux | 28 min |
| May 12, 8:27 PM CDT | Severe Thunderstorm Warning | FSD | Plymouth, Woodbury | 48 min |
| May 13, 11:02 AM CDT | River Flood Warning | FSD | Dickinson | 7 days |
| May 13, 4:25 PM CDT | Tornado Warning | FSD | Buena Vista | 35 min |
| May 13, 4:36 PM CDT | Tornado Warning | FSD | Buena Vista | 24 min |
Nearby
Tornado Warnings in Iowa, 2023Every tornado warning in 2023Tornadoes in 2023
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.