Alert archive / Iowa / Severe Thunderstorm Warnings in 2013

Severe Thunderstorm Warning 13, NWS Sioux Falls, SD

May 26, 2013Buena Vista County, Cherokee County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at May 26, 2013, 4:01 AM CDT for Buena Vista County, Cherokee County, Iowa. It was in force for 29 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
May 26, 2013, 4:01 AM CDT (09:01 UTC)
Expired
May 26, 2013, 4:30 AM CDT
In force
29 min
Issued by
NWS Sioux Falls, SD
Area
Storm-based polygon
Hail
1.0 in
Wind
50.0 mph

Counties Buena Vista County, IA, Cherokee County, IA

The radar

The Sioux Falls radar (KFSD), 129 km from the middle of the area, began a volume at 09:02 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 nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 9.0 hours before the alert went out and 177 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-pSkew-T log-p diagram, Omaha, NE at 00:00Z on 2013-05-26Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 2299 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Omaha, NE at 00:00Z on 2013-05-26The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 84 square meters per square second.1939Sfc1 km3 km6 km9 kmRMLM
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
2299 J/kg
Mixed-layer CIN
-11 J/kg
Mixed-layer LCL
912 m above ground
0-6 km bulk shear
22 kt
0-1 km storm-relative helicity
84 m²/s²
0-3 km storm-relative helicity
186 m²/s²
Significant tornado parameter
1.3
Supercell composite
8.9

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

873 
WUUS53 KFSD 260901
SVRFSD
IAC021-035-260930-
/O.NEW.KFSD.SV.W.0013.130526T0901Z-130526T0930Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
401 AM CDT SUN MAY 26 2013

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BUENA VISTA COUNTY IN NORTHWEST IOWA...
  NORTHERN CHEROKEE COUNTY IN NORTHWEST IOWA...

* UNTIL 430 AM CDT

* AT 357 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF
  CLEGHORN...AND MOVING NORTHEAST AT 40 MPH.

  HAZARD...QUARTER SIZE HAIL.

  SOURCE...RADAR INDICATED.

  IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  CHEROKEE AROUND 410 AM CDT.
  LARRABEE AROUND 415 AM CDT.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4266 9570 4283 9582 4291 9554 4291 9536
      4281 9527
TIME...MOT...LOC 0901Z 241DEG 35KT 4276 9568

HAIL...1.00IN
WIND...<50MPH

$$

CHENARD
2 follow-up statements
759 
WWUS53 KFSD 260909
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
409 AM CDT SUN MAY 26 2013

IAC021-035-260930-
/O.CON.KFSD.SV.W.0013.000000T0000Z-130526T0930Z/
BUENA VISTA IA-CHEROKEE IA-
409 AM CDT SUN MAY 26 2013

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT FOR NORTHEASTERN
CHEROKEE AND NORTHWESTERN BUENA VISTA COUNTIES UNTIL 430 AM CDT...

AT 407 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED NEAR LARRABEE...AND
MOVING NORTHEAST AT 45 MPH.

HAZARD...QUARTER SIZE HAIL.

SOURCE...RADAR INDICATED.

IMPACT...DAMAGE TO VEHICLES AND CROPS IS EXPECTED.

THE SEVERE THUNDERSTORM WILL AFFECT MAINLY RURAL AREAS OF
NORTHEASTERN CHEROKEE AND NORTHWESTERN BUENA VISTA COUNTIES.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 4275 9561 4287 9568 4291 9554 4291 9536
      4285 9533
TIME...MOT...LOC 0910Z 234DEG 39KT 4285 9556

HAIL...1.00IN
WIND...<50MPH

$$

CHENARD
635 
WWUS53 KFSD 260927
SVSFSD

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SIOUX FALLS SD
427 AM CDT SUN MAY 26 2013

IAC021-035-260937-
/O.EXP.KFSD.SV.W.0013.000000T0000Z-130526T0930Z/
BUENA VISTA IA-CHEROKEE IA-
427 AM CDT SUN MAY 26 2013

...THE SEVERE THUNDERSTORM WARNING FOR NORTHEASTERN CHEROKEE AND
NORTHWESTERN BUENA VISTA COUNTIES WILL EXPIRE AT 430 AM CDT...

THE STORM WHICH PROMPTED THE WARNING HAS MOVED OUT OF THE WARNED
AREA.  HOWEVER HEAVY RAIN IS STILL POSSIBLE WITH THIS THUNDERSTORM.

LAT...LON 4275 9561 4287 9568 4291 9554 4291 9536
      4285 9532
TIME...MOT...LOC 0927Z 234DEG 39KT 4296 9535

$$

CHENARD

The office that day

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

IssuedProductOfficeCountiesLasted
May 25, 10:41 PM CDTSevere Thunderstorm WarningFSDLyon49 min
May 26, 1:26 AM CDTFlash Flood WarningFSDLyon6 hr
May 26, 4:24 AM CDTFlash Flood WarningFSDBuena Vista, Cherokee, Clay, Dickinson, O'Brien, Osceola and 2 more4 hr
May 26, 4:31 AM CDTFlash Flood WatchFSDBuena Vista, Cherokee, Clay, Dickinson, Ida, Lyon and 5 more26 hr
May 26, 5:05 AM CDTRiver Flood WarningFSDSioux3 days
May 26, 6:18 AM CDTFlash Flood WarningFSDBuena Vista, Cherokee, Ida, Plymouth, Woodbury3 hr
May 26, 9:54 AM CDTRiver Flood WarningFSDPlymouth4 days
May 26, 9:54 AM CDTRiver Flood WarningFSDPlymouth6 hr
May 26, 9:54 AM CDTRiver Flood WarningFSDClay4 days
May 26, 9:54 AM CDTRiver Flood WarningFSDBuena Vista, Clay9 days
May 26, 9:54 AM CDTRiver Flood WarningFSDSioux3 days
May 26, 3:57 PM CDTRiver Flood WarningFSDClay67 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2013Every severe thunderstorm warning in 2013

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.