Alert archive / Iowa / Severe Thunderstorm Warnings in 2003

Severe Thunderstorm Warning 63, NWS Sioux Falls, SD

June 23, 2003Woodbury County, Iowa

NWS Sioux Falls, SD issued this severe thunderstorm warning at Jun 23, 2003, 10:02 PM CDT for Woodbury County, Iowa. It was in force for 28 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
Jun 23, 2003, 10:02 PM CDT (03:02 UTC)
Expired
Jun 23, 2003, 10:30 PM CDT
In force
28 min
Issued by
NWS Sioux Falls, SD
Area
Counties, with a storm outline in the text

County Woodbury County, IA

The radar

The Omaha radar (KOAX), 130 km from the middle of the area, began a volume at 03:01 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

Aberdeen, SD (KABR), launched 00:00Z, 3.0 hours before the alert went out and 327 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, Aberdeen, SD at 00:00Z on 2003-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1534 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Aberdeen, SD at 00:00Z on 2003-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 120 square meters per square second.19395878Sfc1 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
1534 J/kg
Mixed-layer CIN
-21 J/kg
Mixed-layer LCL
996 m above ground
0-6 km bulk shear
51 kt
0-1 km storm-relative helicity
120 m²/s²
0-3 km storm-relative helicity
407 m²/s²
Significant tornado parameter
0.7
Supercell composite
4.3

Open this sounding in Storm Lab

The text

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

000 
WUUS53 KFSD 240302
SVRFSD
IAC193-240330-

BULLETIN - EAS ACTIVATION REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SIOUX FALLS SD
1003 PM CDT MON JUN 23 2003

THE NATIONAL WEATHER SERVICE IN SIOUX FALLS HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  WOODBURY COUNTY IN NORTHWEST IOWA

* UNTIL 1030 PM CDT

* AT 1003 PM CDT...NATIONAL WEATHER SERVICE DOPPLER RADAR INDICATED A
  SEVERE THUNDERSTORM 4 MILES SOUTHEAST OF LAWTON...OR ABOUT 4 MILES
  SOUTHWEST OF MOVILLE...MOVING NORTHEAST AT 15 MPH.

* THE SEVERE THUNDERSTORM WILL BE NEAR...
  MOVILLE AROUND 1015 PM CDT
  PIERSON AROUND 1030 PM CDT

A TORNADO WATCH IS ALSO IN EFFECT FOR THE AREA. SEVERE THUNDERSTORMS
CAN PRODUCE TORNADOES WITH LITTLE OR NO ADVANCE WARNING. PREPARE TO
MOVE TO A PLACE OF SAFETY IN A STURDY STRUCTURE SUCH AS A BASEMENT OR
SMALL INTERIOR ROOM IF A TORNADO IS SPOTTED.

THIS STORM HAS A HISTORY OF PRODUCING LARGE HAIL. GO INSIDE A STURDY
BUILDING AND STAY AWAY FROM WINDOWS.

LAT...LON 4245 9629 4236 9612 4256 9578 4256 9601

$$
CHAPMAN

The office that day

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

IssuedProductOfficeCountiesLasted
Jun 23, 9:12 PM CDTSevere Thunderstorm WarningFSDWoodbury48 min
Jun 23, 9:37 PM CDTSevere Thunderstorm WarningFSDPlymouth23 min
Jun 23, 10:22 PM CDTSevere Thunderstorm WarningFSDCherokee, Plymouth38 min
Jun 23, 10:38 PM CDTSevere Thunderstorm WarningFSDBuena Vista52 min
Jun 23, 10:50 PM CDTTornado WarningFSDIda, Woodbury25 min
Jun 23, 11:12 PM CDTSevere Thunderstorm WarningFSDPlymouth48 min
Jun 23, 11:19 PM CDTSevere Thunderstorm WarningFSDWoodbury56 min
Jun 23, 11:21 PM CDTSevere Thunderstorm WarningFSDCherokee39 min
Jun 23, 11:31 PM CDTSevere Thunderstorm WarningFSDSioux44 min
Jun 23, 11:37 PM CDTSevere Thunderstorm WarningFSDClay, O'Brien53 min
Jun 23, 11:53 PM CDTSevere Thunderstorm WarningFSDCherokee22 min
Jun 23, 11:55 PM CDTSevere Thunderstorm WarningFSDIda65 min
Jun 24, 12:05 AM CDTSevere Thunderstorm WarningFSDPlymouth25 min
Jun 24, 12:16 AM CDTSevere Thunderstorm WarningFSDBuena Vista, Cherokee44 min
Jun 24, 12:52 AM CDTSevere Thunderstorm WarningFSDIda, Woodbury38 min
Jun 24, 2:25 AM CDTFlash Flood WarningFSDCherokee, Ida, Woodbury4 hr

Nearby

Severe Thunderstorm Warnings in Iowa, 2003Every severe thunderstorm warning in 2003

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.