Alert archive / Iowa / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 584

June 24, 200336 counties in Iowa

The Storm Prediction Center issued this severe thunderstorm watch at Jun 24, 2003, 5:25 PM CDT for 36 counties in Iowa. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 24, 2003, 5:25 PM CDT (22:25 UTC)
Expired
Jun 24, 2003, 10:00 PM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 36 counties

Adair County, IA, Audubon County, IA, Boone County, IA, Buena Vista County, IA, Butler County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cerro Gordo County, IA, Crawford County, IA, Dallas County, IA, Emmet County, IA, Floyd County, IA, Franklin County, IA, Greene County, IA, Guthrie County, IA, Hamilton County, IA, Hancock County, IA, Hardin County, IA, Howard County, IA, Humboldt County, IA, Kossuth County, IA, Madison County, IA, Mitchell County, IA, Palo Alto County, IA, Pocahontas County, IA, Polk County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Story County, IA, Warren County, IA, Webster County, IA, Winnebago County, IA, Worth County, IA, Wright County, IA

The radar

The Des Moines radar (KDMX), 82 km from the middle of the area, began a volume at 22:26 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.

Warnings issued inside it

2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
Jun 24, 5:42 PM CDTSevere Thunderstorm WarningOAXPottawattamie48 min
Jun 24, 5:48 PM CDTTornado WarningOAXPottawattamie27 min

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Minneapolis, MN (KMPX), launched 12:00Z, 10.4 hours before the alert went out and 297 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, Minneapolis, MN at 12:00Z on 2003-06-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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, Minneapolis, MN at 12:00Z on 2003-06-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 77 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
1 J/kg
Mixed-layer CIN
No buoyant parcel
Mixed-layer LCL
1284 m above ground
0-6 km bulk shear
52 kt
0-1 km storm-relative helicity
77 m²/s²
0-3 km storm-relative helicity
13 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.1

Open this sounding in Storm Lab

The text

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

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SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 23, 8:08 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Boone, Calhoun, Carroll and 28 more67 min
Jun 23, 8:55 PM CDTTornado WatchSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cerro Gordo and 24 more4 hr
Jun 23, 9:10 PM CDTMesoscale DiscussionSPCCherokee, Dickinson, Lyon, O'Brien, Osceola, Sioux65 min
Jun 23, 10:38 PM CDTMesoscale DiscussionSPCBuena Vista, Calhoun, Cherokee, Clay, Humboldt, Ida and 9 more67 min
Jun 23, 10:50 PM CDTTornado WatchSPCPlymouth5 hr
Jun 23, 11:45 PM CDTSevere Thunderstorm WatchSPCLyon, O'Brien, Osceola, Sioux6 hr
Jun 24, 12:35 AM CDTSevere Thunderstorm WatchSPCBoone, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 24 more5 hr
Jun 24, 1:52 AM CDTMesoscale DiscussionSPCPlymouth53 min
Jun 24, 2:05 AM CDTSevere Thunderstorm WatchSPCAdair, Adams, Allamakee, Benton, Black Hawk, Boone and 39 more5 hr
Jun 24, 2:44 AM CDTMesoscale DiscussionSPCLyon, Osceola, Sioux2 hr
Jun 24, 3:09 AM CDTMesoscale DiscussionSPCBoone, Buena Vista, Calhoun, Carroll, Cerro Gordo, Cherokee and 12 more96 min
Jun 24, 11:43 AM CDTMesoscale DiscussionSPCAdams, Cass, Fremont, Harrison, Mills, Montgomery and 3 more2 hr
Jun 24, 2:15 PM CDTTornado WatchSPCCherokee, Lyon, O'Brien, Osceola, Plymouth, Sioux8 hr
Jun 24, 3:56 PM CDTMesoscale DiscussionSPCAdair, Adams, Audubon, Cass, Fremont, Guthrie and 6 more64 min
Jun 24, 5:59 PM CDTMesoscale DiscussionSPCLyon, O'Brien, Osceola, Plymouth, Sioux61 min

Nearby

Severe Thunderstorm Watches in Iowa, 2003Every severe thunderstorm watch 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.