Alert archive / Nebraska / Tornado Watches in 2008

Tornado Watch 349

May 24, 200851 counties in Nebraska

The Storm Prediction Center issued this tornado watch at May 24, 2008, 3:08 PM CDT for 51 counties in Nebraska. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 24, 2008, 3:08 PM CDT (20:08 UTC)
Expired
May 24, 2008, 9:04 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2.5 in
Strongest gust expected
60 kt
All 51 counties

Adams County, NE, Antelope County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Butler County, NE, Cedar County, NE, Clay County, NE, Colfax County, NE, Cuming County, NE, Dakota County, NE, Dixon County, NE, Dodge County, NE, Fillmore County, NE, Franklin County, NE, Gage County, NE, Garfield County, NE, Greeley County, NE, Hall County, NE, Hamilton 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, Loup County, NE, Madison County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Pawnee County, NE, Pierce County, NE, Platte County, NE, Polk County, NE, Rock County, NE, Saline County, NE, Saunders County, NE, Seward County, NE, Sherman County, NE, Stanton County, NE, Thayer County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Webster County, NE, Wheeler County, NE, York County, NE

The radar

The Grand Island radar (KUEX), 160 km from the middle of the area, began a volume at 20:09 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
40%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
50%
One or more gusts of 65 knots or more
30%
Ten or more severe hail reports
50%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
80%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
May 24, 4:36 PM CDTSevere Thunderstorm WarningLBFHolt, Wheeler15 min
May 24, 5:43 PM CDTSevere Thunderstorm WarningOAXCedar, Knox32 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 12:00Z, 8.1 hours before the alert went out and 175 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 12:00Z on 2008-05-24Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1 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 12:00Z on 2008-05-24The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 323 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
0 J/kg
Mixed-layer LCL
505 m above ground
0-6 km bulk shear
55 kt
0-1 km storm-relative helicity
323 m²/s²
0-3 km storm-relative helicity
453 m²/s²
Significant tornado parameter
0.0
Supercell composite
0.0

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 23, 7:07 PM CDTTornado WatchSPCArthur, Banner, Box Butte, Chase, Cheyenne, Dawes and 13 more5 hr
May 23, 8:17 PM CDTMesoscale DiscussionSPCAdams, Buffalo, Chase, Clay, Dawson, Dundy and 24 more58 min
May 23, 8:48 PM CDTTornado Watch PDSSPCAdams, Clay, Fillmore, Franklin, Furnas, Gosper and 8 more6 hr
May 23, 10:33 PM CDTMesoscale DiscussionSPCAdams, Clay, Fillmore, Franklin, Furnas, Gosper and 8 more57 min
May 23, 11:14 PM CDTMesoscale DiscussionSPCArthur, Dawson, Frontier, Garden, Grant, Hayes and 6 more61 min
May 24, 1:18 PM CDTMesoscale DiscussionSPCKeya Paha57 min
May 24, 2:17 PM CDTMesoscale DiscussionSPCAdams, Antelope, Boone, Boyd, Buffalo, Butler and 27 more118 min
May 24, 6:33 PM CDTMesoscale DiscussionSPCAdams, Boone, Burt, Butler, Cass, Cedar and 34 more117 min

Nearby

Tornado Watches in Nebraska, 2008Every tornado watch in 2008

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.