Alert archive / Nebraska / Severe Thunderstorm Watches in 2006

Severe Thunderstorm Watch 384

May 23, 20068 counties in Iowa; 21 counties in Kansas; 26 counties in Nebraska

The Storm Prediction Center issued this severe thunderstorm watch at May 23, 2006, 7:57 PM CDT for 8 counties in Iowa; 21 counties in Kansas; 26 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 23, 2006, 7:57 PM CDT (00:57 UTC)
Expired
May 24, 2006, 2:00 AM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 55 counties

Fremont County, IA, Harrison County, IA, Mills County, IA, Monona County, IA, Montgomery County, IA, Page County, IA, Pottawattamie County, IA, Shelby County, IA, Barton County, KS, Clay County, KS, Cloud County, KS, Dickinson County, KS, Ellsworth County, KS, Geary County, KS, Jewell County, KS, Lincoln County, KS, Marshall County, KS, McPherson County, KS, Mitchell County, KS, Osborne County, KS, Ottawa County, KS, Reno County, KS, Republic County, KS, Rice County, KS, Riley County, KS, Russell County, KS, Saline County, KS, Smith County, KS, Washington County, KS, Burt County, NE, Cass County, NE, Clay County, NE, Cuming County, NE, Dodge County, NE, Douglas County, NE, Fillmore County, NE, Gage County, NE, Hamilton County, NE, Jefferson County, NE, Johnson County, NE, Lancaster County, NE, Nemaha County, NE, Nuckolls County, NE, Otoe County, NE, Pawnee County, NE, Richardson County, NE, Saline County, NE, Sarpy County, NE, Saunders County, NE, Seward County, NE, Thayer County, NE, Thurston County, NE, Washington County, NE, Webster County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 90 km from the middle of the area, began a volume at 01:01 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.

What SPC expected

The probabilities SPC published with the watch, for the watch area over its life.

Two or more tornadoes
20%
One or more EF2 to EF5 tornadoes
5%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
30%
One or more hailstones of 2 inches or more
20%
Six or more combined severe hail and wind reports
70%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 23, 7:57 PM CDTSevere Thunderstorm WarningGIDHamilton29 min
May 23, 8:03 PM CDTSevere Thunderstorm WarningICTBarton42 min
May 23, 8:22 PM CDTSevere Thunderstorm WarningOAXCuming38 min
May 23, 8:24 PM CDTSevere Thunderstorm WarningGIDFillmore66 min
May 23, 8:28 PM CDTSevere Thunderstorm WarningGIDClay32 min
May 23, 8:35 PM CDTSevere Thunderstorm WarningGIDJewell, Mitchell55 min
May 23, 8:35 PM CDTSevere Thunderstorm WarningICTBarton40 min
May 23, 8:38 PM CDTSevere Thunderstorm WarningOAXDodge37 min
May 23, 8:38 PM CDTSevere Thunderstorm WarningOAXButler, Seward52 min
May 23, 8:42 PM CDTSevere Thunderstorm WarningICTBarton, Russell30 min
May 23, 8:42 PM CDTSevere Thunderstorm WarningGIDNuckolls, Thayer63 min
May 23, 8:44 PM CDTSevere Thunderstorm WarningGIDYork31 min
May 23, 9:03 PM CDTSevere Thunderstorm WarningOAXBurt, Cuming, Thurston42 min
May 23, 9:06 PM CDTSevere Thunderstorm WarningOAXSaunders54 min
May 23, 9:16 PM CDTSevere Thunderstorm WarningTOPRepublic44 min
May 23, 9:20 PM CDTSevere Thunderstorm WarningOAXSaline40 min
May 23, 9:27 PM CDTSevere Thunderstorm WarningOAXMonona48 min
May 23, 9:28 PM CDTSevere Thunderstorm WarningGIDFillmore20 min
May 23, 9:30 PM CDTSevere Thunderstorm WarningOAXSeward23 min
May 23, 9:36 PM CDTSevere Thunderstorm WarningOAXLancaster54 min
May 23, 9:42 PM CDTSevere Thunderstorm WarningOAXJefferson33 min
May 23, 9:43 PM CDTSevere Thunderstorm WarningGIDThayer20 min
May 23, 10:10 PM CDTSevere Thunderstorm WarningOAXCass65 min
May 23, 10:19 PM CDTSevere Thunderstorm WarningOAXSaunders26 min
May 23, 10:27 PM CDTSevere Thunderstorm WarningOAXGage33 min
May 23, 10:29 PM CDTSevere Thunderstorm WarningOAXSarpy44 min
May 23, 10:42 PM CDTSevere Thunderstorm WarningOAXLancaster33 min
May 23, 10:43 PM CDTSevere Thunderstorm WarningOAXOtoe62 min
May 23, 10:47 PM CDTSevere Thunderstorm WarningOAXJohnson58 min
May 23, 10:53 PM CDTSevere Thunderstorm WarningOAXMills67 min
May 23, 11:08 PM CDTSevere Thunderstorm WarningOAXFremont67 min
May 23, 11:16 PM CDTSevere Thunderstorm WarningOAXGage29 min
May 23, 11:27 PM CDTSevere Thunderstorm WarningOAXPottawattamie33 min
May 23, 11:48 PM CDTSevere Thunderstorm WarningOAXMontgomery42 min
May 23, 11:52 PM CDTSevere Thunderstorm WarningOAXOtoe23 min
May 23, 11:56 PM CDTSevere Thunderstorm WarningICTKingman, Reno32 min
May 24, 12:18 AM CDTSevere Thunderstorm WarningOAXOtoe42 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

Omaha, NE (KOAX), launched 00:00Z, 1.0 hours before the alert went out and 127 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 2006-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 827 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, Omaha, NE at 00:00Z on 2006-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 51 square meters per square second.193958Sfc1 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
827 J/kg
Mixed-layer CIN
-22 J/kg
Mixed-layer LCL
1972 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
51 m²/s²
0-3 km storm-relative helicity
124 m²/s²
Significant tornado parameter
0.0
Supercell composite
1.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 10:06 PM CDTMesoscale DiscussionSPCAudubon, Buena Vista, Calhoun, Carroll, Cass, Cherokee and 24 more114 min
May 24, 1:56 AM CDTMesoscale DiscussionSPCDecatur94 min
May 24, 11:27 AM CDTMesoscale DiscussionSPCAppanoose, Davis, Des Moines, Henry, Iowa, Jefferson and 11 more2 hr
May 24, 1:37 PM CDTMesoscale DiscussionSPCAllamakee, Cedar, Clayton, Clinton, Delaware, Dubuque and 8 more83 min
May 24, 2:20 PM CDTSevere Thunderstorm WatchSPCAllamakee, Clayton, Fayette, Winneshiek6 hr
May 24, 2:46 PM CDTTornado WatchSPCBenton, Buchanan, Cedar, Clinton, Delaware, Des Moines and 15 more7 hr
May 23, 7:11 PM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellis, Ellsworth and 19 more2 hr

Nearby

Severe Thunderstorm Watches in Nebraska, 2006Severe Thunderstorm Watches in Kansas, 2006Severe Thunderstorm Watches in Iowa, 2006Every severe thunderstorm watch in 2006

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.