Alert archive / Nebraska / Severe Thunderstorm Watches in 2002

Severe Thunderstorm Watch 408

June 10, 200224 counties in Iowa; 38 counties in Nebraska; Union County, South Dakota

The Storm Prediction Center issued this severe thunderstorm watch at Jun 10, 2002, 9:30 PM CDT for 24 counties in Iowa; 38 counties in Nebraska; Union County, South Dakota. It was in force for 5 hr.

The area

The outline as issued.

The facts

Issued
Jun 10, 2002, 9:30 PM CDT (02:30 UTC)
Expired
Jun 11, 2002, 2:00 AM CDT
In force
5 hr
Issued by
the Storm Prediction Center
All 63 counties

Audubon County, IA, Buena Vista County, IA, Calhoun County, IA, Carroll County, IA, Cass County, IA, Cherokee County, IA, Crawford County, IA, Fremont County, IA, Greene County, IA, Guthrie County, IA, Harrison County, IA, Humboldt County, IA, Ida County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Plymouth County, IA, Pocahontas County, IA, Pottawattamie County, IA, Sac County, IA, Shelby County, IA, Webster County, IA, Woodbury County, IA, Wright County, IA, Adams County, NE, Burt County, NE, Butler County, NE, Cass County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Hall County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Merrick County, NE, Nance County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Platte County, NE, Polk County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Washington County, NE, Wayne County, NE, Webster County, NE, York County, NE, Union County, SD

The radar

The Omaha radar (KOAX), 43 km from the middle of the area, began a volume at 02:30 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

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

IssuedProductOfficeCountiesLasted
Jun 10, 9:32 PM CDTTornado WarningOAXColfax28 min
Jun 10, 9:37 PM CDTSevere Thunderstorm WarningGIDHamilton53 min
Jun 10, 9:38 PM CDTSevere Thunderstorm WarningOAXBurt37 min
Jun 10, 9:51 PM CDTSevere Thunderstorm WarningOAXCuming24 min
Jun 10, 9:59 PM CDTSevere Thunderstorm WarningGIDMerrick61 min
Jun 10, 10:03 PM CDTSevere Thunderstorm WarningOAXDodge, Lancaster, Saunders27 min
Jun 10, 10:15 PM CDTSevere Thunderstorm WarningOAXBurt30 min
Jun 10, 10:24 PM CDTSevere Thunderstorm WarningOAXDouglas, Sarpy, Saunders36 min
Jun 10, 10:41 PM CDTSevere Thunderstorm WarningOAXWashington34 min
Jun 10, 10:45 PM CDTSevere Thunderstorm WarningGIDNance60 min
Jun 10, 10:49 PM CDTSevere Thunderstorm WarningOAXPottawattamie41 min
Jun 10, 10:56 PM CDTSevere Thunderstorm WarningOAXHarrison, Monona34 min
Jun 10, 11:11 PM CDTSevere Thunderstorm WarningDMXCrawford49 min
Jun 10, 11:22 PM CDTSevere Thunderstorm WarningOAXShelby38 min
Jun 10, 11:31 PM CDTSevere Thunderstorm WarningOAXPottawattamie29 min
Jun 10, 11:31 PM CDTSevere Thunderstorm WarningOAXPlatte44 min
Jun 10, 11:35 PM CDTSevere Thunderstorm WarningDMXCarroll55 min
Jun 10, 11:53 PM CDTSevere Thunderstorm WarningDMXAudubon52 min
Jun 11, 12:06 AM CDTSevere Thunderstorm WarningOAXColfax39 min
Jun 11, 12:10 AM CDTSevere Thunderstorm WarningGIDNance65 min
Jun 11, 12:15 AM CDTSevere Thunderstorm WarningOAXPlatte30 min
Jun 11, 12:22 AM CDTSevere Thunderstorm WarningOAXFremont, Mills23 min
Jun 11, 12:42 AM CDTSevere Thunderstorm WarningDMXBoone, Webster63 min
Jun 11, 12:49 AM CDTSevere Thunderstorm WarningOAXPlatte26 min
Jun 11, 12:59 AM CDTSevere Thunderstorm WarningDMXHamilton, Wright46 min
Jun 11, 1:12 AM CDTSevere Thunderstorm WarningOAXMontgomery33 min

The nearest sounding before it

Omaha, NE (KOAX), launched 00:00Z, 2.5 hours before the alert went out and 43 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 2002-06-11Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 4189 joules per kilogram.LCLEL10008507005003002001001 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, Omaha, NE at 00:00Z on 2002-06-11The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 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
4189 J/kg
Mixed-layer CIN
-6 J/kg
Mixed-layer LCL
1042 m above ground
0-6 km bulk shear
24 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
204 m²/s²
Significant tornado parameter
2.7
Supercell composite
13.6

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Jun 11, 1:30 AM CDTSevere Thunderstorm WatchSPCAllamakee, Black Hawk, Bremer, Chickasaw, Clayton, Fayette and 5 more6 hr
Jun 11, 5:45 PM CDTTornado WatchSPCCrawford, Fremont, Harrison, Mills, Montgomery, Page and 2 more5 hr

Nearby

Severe Thunderstorm Watches in Nebraska, 2002Severe Thunderstorm Watches in Iowa, 2002Severe Thunderstorm Watches in South Dakota, 2002Every severe thunderstorm watch in 2002

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.