Alert archive / Iowa / Tornado Warnings in 2023

Tornado Warning 7, NWS Sioux Falls, SD

June 24, 2023Buena Vista County, Iowa

NWS Sioux Falls, SD issued this tornado warning at Jun 24, 2023, 9:49 PM CDT for Buena Vista County, Iowa. It was in force for 26 min. 4 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: Jun 24, 2023, 9:49 PM CDT (02:49 UTC)
Expired: Jun 24, 2023, 10:15 PM CDT
In force: 26 min
Issued by: NWS Sioux Falls, SD
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.0 in

County Buena Vista County, IA

What was reported inside it

Time	Report	Where	Remark
Jun 24, 9:59 PM CDT	HAIL 1	4 Nw Truesdale, IA	Quarter size hail resulted in roughly 200 strikes to a sheriff deputy squad car. Another nearby deputys house was damaged by hail. Time estimated by radar.
Jun 24, 10:18 PM CDT	HAIL 1	5 N Alta, IA	Picture sent to NWS with coin reference.
Jun 24, 10:18 PM CDT	HAIL 1	5 N Alta, IA	Picture sent to NWS with coin reference.
Jun 24, 10:19 PM CDT	TSTM WND DMG	3 Wnw Truesdale, IA	Emergency manager noted a leaning power pole on 80th Avenue just south of Highway 3. Nearby corn was also flattened. Time estimated by radar.

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.8 hours before the alert went out and 188 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.

Skew-T log-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.

Mixed-layer CAPE: 28 J/kg
Mixed-layer CIN: -323 J/kg
Mixed-layer LCL: 2478 m above ground
0-6 km bulk shear: 46 kt
0-1 km storm-relative helicity: 71 m²/s²
0-3 km storm-relative helicity: 111 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.5

Open this sounding in Storm Lab

The text

As transmitted.

315 
WFUS53 KFSD 250249
TORFSD
IAC021-250315-
/O.NEW.KFSD.TO.W.0007.230625T0249Z-230625T0315Z/

BULLETIN - EAS ACTIVATION REQUESTED
Tornado Warning
National Weather Service Sioux Falls SD
949 PM CDT Sat Jun 24 2023

The National Weather Service in Sioux Falls has issued a

* Tornado Warning for...
  Northwestern Buena Vista County in northwestern Iowa...

* Until 1015 PM CDT.
    
* At 948 PM CDT, a severe thunderstorm capable of producing a tornado
  was located near Aurelia, or 9 miles east of Cherokee, moving east
  at 35 mph.

  HAZARD...Tornado and quarter size hail.

  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...
  Sioux Rapids around 1010 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Rembrandt.

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 4275 9507 4273 9538 4274 9539 4283 9539
      4290 9510
TIME...MOT...LOC 0248Z 260DEG 29KT 4278 9537 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Chapman

2 follow-up statements

291 
WWUS53 KFSD 250302
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
1002 PM CDT Sat Jun 24 2023

IAC021-250315-
/O.CON.KFSD.TO.W.0007.000000T0000Z-230625T0315Z/
Buena Vista IA-
1002 PM CDT Sat Jun 24 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR
NORTHWESTERN BUENA VISTA COUNTY...
    
At 1001 PM CDT, a severe thunderstorm capable of producing a tornado 
was located just northwest of Truesdale, or 9 miles north of Storm 
Lake, moving east at 25 mph.

HAZARD...Tornado and quarter size hail.

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...
  Sioux Rapids around 1010 PM CDT.

Other locations impacted by this tornadic thunderstorm include
Rembrandt.

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!

&&

LAT...LON 4275 9507 4275 9538 4274 9539 4283 9539
      4290 9510
TIME...MOT...LOC 0301Z 272DEG 23KT 4277 9523 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Chapman

233 
WWUS53 KFSD 250308
SVSFSD

Severe Weather Statement
National Weather Service Sioux Falls SD
1008 PM CDT Sat Jun 24 2023

IAC021-250315-
/O.CON.KFSD.TO.W.0007.000000T0000Z-230625T0315Z/
Buena Vista IA-
1008 PM CDT Sat Jun 24 2023

...A TORNADO WARNING REMAINS IN EFFECT UNTIL 1015 PM CDT FOR CENTRAL
BUENA VISTA COUNTY...
        
At 1007 PM CDT, a severe thunderstorm capable of producing a tornado
was located near Truesdale, or 9 miles north of Storm Lake, moving
east at 35 mph.

HAZARD...Tornado and quarter size hail.

SOURCE...Weather spotters reported a funnel cloud north of Truesdale.

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
central Buena Vista County, including the following locations...
Rembrandt.

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!

&&

LAT...LON 4275 9507 4275 9538 4274 9539 4278 9539
      4287 9510
TIME...MOT...LOC 0307Z 260DEG 29KT 4278 9518 

TORNADO...RADAR INDICATED
MAX HAIL SIZE...1.00 IN

$$

Chapman

The office that day

Everything else NWS Sioux Falls, SD issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Jun 24, 9:25 PM CDT	Severe Thunderstorm Warning	FSD	Buena Vista, Cherokee	35 min
Jun 24, 10:12 PM CDT	Tornado Warning	FSD	Buena Vista	33 min
Jun 24, 10:17 PM CDT	Tornado Warning	FSD	Buena Vista	28 min

Nearby

Tornado Warnings in Iowa, 2023 Every tornado warning in 2023 Tornadoes 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.