Alert archive / Nebraska / Severe Thunderstorm Watches in 2003

Severe Thunderstorm Watch 675

July 7, 20034 states

The Storm Prediction Center issued this severe thunderstorm watch at Jul 7, 2003, 10:20 PM CDT for 4 states. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued: Jul 7, 2003, 10:20 PM CDT (03:20 UTC)
Expired: Jul 8, 2003, 5:00 AM CDT
In force: 7 hr
Issued by: the Storm Prediction Center

All 85 counties

Cherokee County, IA, Crawford County, IA, Fremont County, IA, Harrison County, IA, Ida County, IA, Mills County, IA, Monona County, IA, Plymouth County, IA, Pottawattamie County, IA, Woodbury County, IA, Atchison County, MO, Adams County, NE, Antelope County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dawson County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Gage County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Holt County, NE, Howard County, NE, Jefferson County, NE, Johnson County, NE, Kearney County, NE, Keya Paha County, NE, Knox County, NE, Lancaster County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Phelps County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Red Willow County, NE, Richardson County, NE, Rock County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thomas County, NE, Thurston County, NE, Valley County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE, Bon Homme County, SD, Clay County, SD, Union County, SD

The radar

The Grand Island radar (KUEX), 97 km from the middle of the area, began a volume at 03:22 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

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

Issued	Product	Office	Counties	Lasted
Jul 7, 10:46 PM CDT	Severe Thunderstorm Warning	GID	Dawson, Gosper	59 min
Jul 7, 10:48 PM CDT	Severe Thunderstorm Warning	LBF	Frontier, Lincoln	27 min
Jul 7, 10:50 PM CDT	Severe Thunderstorm Warning	LBF	Custer, Logan	55 min
Jul 7, 10:59 PM CDT	Severe Thunderstorm Warning	GID	Furnas	61 min
Jul 7, 11:10 PM CDT	Severe Thunderstorm Warning	LBF	Hooker, Thomas	65 min
Jul 7, 11:16 PM CDT	Severe Thunderstorm Warning	GLD	Red Willow	59 min
Jul 7, 11:35 PM CDT	Severe Thunderstorm Warning	GID	Buffalo, Phelps	55 min
Jul 7, 11:51 PM CDT	Severe Thunderstorm Warning	LBF	Custer	39 min
Jul 8, 12:03 AM CDT	Severe Thunderstorm Warning	GID	Sherman, Valley	57 min
Jul 8, 12:56 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme, Yankton	34 min
Jul 8, 1:29 AM CDT	Severe Thunderstorm Warning	FSD	Bon Homme	31 min
Jul 8, 2:02 AM CDT	Flash Flood Warning	FSD	Bon Homme	118 min
Jul 8, 3:00 AM CDT	Flash Flood Warning	FSD	Clay	2 hr

Discussions around it

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

The nearest sounding before it

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 3.3 hours before the alert went out and 169 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: 3731 J/kg
Mixed-layer CIN: -5 J/kg
Mixed-layer LCL: 1235 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 44 m²/s²
0-3 km storm-relative helicity: 228 m²/s²
Significant tornado parameter: 2.1
Supercell composite: 17.1

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.

Issued	Product	Office	Counties	Lasted
Jul 7, 7:16 PM CDT	Mesoscale Discussion	SPC	Adair, Audubon, Benton, Cass, Cedar, Clinton and 20 more	3 hr
Jul 7, 10:15 PM CDT	Mesoscale Discussion	SPC	Crawford, Harrison, Ida, Monona, Plymouth, Pottawattamie and 1 more	3 hr
Jul 7, 11:25 PM CDT	Mesoscale Discussion	SPC	Clay, Dickinson, Emmet, Kossuth, Lyon, O'Brien and 3 more	2 hr
Jul 7, 11:40 PM CDT	Severe Thunderstorm Watch	SPC	Clay, Dickinson, Lyon, O'Brien, Osceola, Sioux	5 hr
Jul 8, 1:34 AM CDT	Mesoscale Discussion	SPC	Cherokee, Crawford, Fremont, Harrison, Ida, Mills and 5 more	116 min
Jul 8, 2:52 AM CDT	Mesoscale Discussion	SPC	Benton, Black Hawk, Boone, Bremer, Buchanan, Buena Vista and 49 more	113 min
Jul 8, 8:50 AM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Boone, Cass and 32 more	115 min
Jul 8, 9:50 AM CDT	Severe Thunderstorm Watch	SPC	Appanoose, Benton, Black Hawk, Buchanan, Cedar, Clinton and 33 more	5 hr
Jul 8, 12:59 PM CDT	Mesoscale Discussion	SPC	Benton, Black Hawk, Buchanan, Cedar, Clinton, Delaware and 17 more	91 min
Jul 8, 1:45 PM CDT	Tornado Watch	SPC	Cedar, Clinton, Des Moines, Henry, Jackson, Johnson and 7 more	5 hr
Jul 8, 3:40 PM CDT	Mesoscale Discussion	SPC	Des Moines, Henry, Lee	95 min
Jul 8, 5:13 PM CDT	Mesoscale Discussion	SPC	Adair, Adams, Appanoose, Audubon, Cass, Clarke and 19 more	92 min
Jul 8, 6:15 PM CDT	Severe Thunderstorm Watch	SPC	Adair, Adams, Appanoose, Audubon, Cass, Clarke and 22 more	5 hr
Jul 8, 6:46 PM CDT	Mesoscale Discussion	SPC	Appanoose, Davis, Decatur, Lee, Ringgold, Taylor and 2 more	3 hr
Jul 8, 1:21 PM CDT	Mesoscale Discussion	SPC	Audrain, Clark, Lewis, Lincoln, Marion, Pike and 1 more	24 min
Jul 7, 7:48 PM CDT	Mesoscale Discussion	SPC	Arthur, Box Butte, Chase, Cheyenne, Deuel, Dundy and 14 more	117 min
Jul 8, 2:36 PM CDT	Mesoscale Discussion	SPC	Box Butte, Dawes, Sioux	84 min
Jul 8, 10:44 AM CDT	Mesoscale Discussion	SPC	Aurora, Beadle, Brown, Brule, Buffalo, Clark and 28 more	91 min
Jul 8, 3:05 PM CDT	Tornado Watch	SPC	Bennett, Butte, Custer, Fall River, Harding, Jackson and 5 more	7 hr
Jul 8, 5:38 PM CDT	Mesoscale Discussion	SPC	Bennett, Butte, Custer, Fall River, Harding, Lawrence and 4 more	67 min

Nearby

Severe Thunderstorm Watches in Nebraska, 2003 Severe Thunderstorm Watches in Iowa, 2003 Severe Thunderstorm Watches in South Dakota, 2003 Every 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.