Alert archive / Nebraska / Tornado Watches in 2007

Tornado Watch 229

May 4, 200711 counties in Kansas; 34 counties in Nebraska

The Storm Prediction Center issued this tornado watch at May 4, 2007, 7:26 PM CDT for 11 counties in Kansas; 34 counties in Nebraska. It was in force for 7 hr.

The area

The outline as issued.

The facts

Issued
May 4, 2007, 7:26 PM CDT (00:26 UTC)
Expired
May 5, 2007, 2:00 AM CDT
In force
7 hr
Issued by
the Storm Prediction Center
All 45 counties

Decatur County, KS, Gove County, KS, Graham County, KS, Jewell County, KS, Mitchell County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rooks County, KS, Sheridan County, KS, Smith County, KS, Adams County, NE, Blaine County, NE, Boyd County, NE, Brown County, NE, Buffalo County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Franklin County, NE, Furnas 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, Kearney County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Phelps County, NE, Polk County, NE, Red Willow County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE

The radar

The Grand Island radar (KUEX), 104 km from the middle of the area, began a volume at 00:29 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

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

IssuedProductOfficeCountiesLasted
May 4, 7:40 PM CDTSevere Thunderstorm WarningGIDSmith50 min
May 4, 7:44 PM CDTTornado WarningGIDOsborne23 min
May 4, 7:56 PM CDTTornado WarningGIDSmith34 min
May 4, 8:26 PM CDTSevere Thunderstorm WarningGIDSmith49 min
May 4, 8:51 PM CDTSevere Thunderstorm WarningGIDPhillips39 min
May 4, 9:14 PM CDTSevere Thunderstorm WarningGIDJewell, Smith46 min
May 4, 9:15 PM CDTSevere Thunderstorm WarningGIDPhillips60 min
May 4, 9:18 PM CDTSevere Thunderstorm WarningGIDRooks42 min
May 4, 9:54 PM CDTSevere Thunderstorm WarningGIDPhillips66 min
May 4, 9:58 PM CDTSevere Thunderstorm WarningGIDJewell, Smith47 min
May 4, 10:16 PM CDTTornado WarningGIDFranklin59 min
May 4, 10:18 PM CDTSevere Thunderstorm WarningGIDSmith42 min
May 4, 10:26 PM CDTSevere Thunderstorm WarningGIDMitchell, Osborne20 min
May 4, 10:48 PM CDTFlash Flood WarningGIDFranklin6 hr
May 4, 10:50 PM CDTSevere Thunderstorm WarningGIDWebster55 min
May 4, 10:59 PM CDTSevere Thunderstorm WarningGIDPhillips61 min
May 4, 10:59 PM CDTTornado WarningGIDFranklin34 min
May 4, 11:13 PM CDTTornado WarningGIDPhillips, Smith27 min
May 4, 11:17 PM CDTSevere Thunderstorm WarningGLDGraham58 min
May 4, 11:29 PM CDTSevere Thunderstorm WarningGLDGove, Sheridan61 min
May 4, 11:32 PM CDTTornado WarningGIDPhillips30 min
May 4, 11:43 PM CDTSevere Thunderstorm WarningGIDWebster62 min
May 4, 11:45 PM CDTSevere Thunderstorm WarningGIDBuffalo7 min
May 4, 11:48 PM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson, Phelps57 min
May 4, 11:49 PM CDTTornado WarningGIDSmith25 min
May 4, 11:49 PM CDTSevere Thunderstorm WarningLBFCuster56 min
May 5, 12:02 AM CDTSevere Thunderstorm WarningGLDDecatur, Norton58 min
May 5, 12:14 AM CDTSevere Thunderstorm WarningGLDGraham31 min
May 5, 12:17 AM CDTSevere Thunderstorm WarningLBFCuster28 min
May 5, 12:20 AM CDTSevere Thunderstorm WarningGIDHarlan28 min
May 5, 12:29 AM CDTSevere Thunderstorm WarningLBFWheeler31 min
May 5, 12:36 AM CDTFlash Flood WarningGIDWebster6 hr
May 5, 12:36 AM CDTSevere Thunderstorm WarningGIDPhelps54 min
May 5, 12:41 AM CDTSevere Thunderstorm WarningLBFCuster34 min
May 5, 12:43 AM CDTSevere Thunderstorm WarningGLDRed Willow62 min
May 5, 12:44 AM CDTSevere Thunderstorm WarningLBFCuster, Loup46 min
May 5, 12:51 AM CDTSevere Thunderstorm WarningGIDGosper, Phelps54 min
May 5, 12:54 AM CDTSevere Thunderstorm WarningGIDAdams, Clay66 min
May 5, 12:56 AM CDTSevere Thunderstorm WarningGLDDecatur, Norton24 min
May 5, 12:59 AM CDTSevere Thunderstorm WarningLBFGarfield, Holt, Wheeler46 min
May 5, 1:12 AM CDTSevere Thunderstorm WarningLBFBlaine, Custer48 min
May 5, 1:13 AM CDTSevere Thunderstorm WarningGIDBuffalo, Kearney23 min
May 5, 1:20 AM CDTSevere Thunderstorm WarningGIDBuffalo, Dawson40 min
May 5, 1:27 AM CDTSevere Thunderstorm WarningLBFLoup42 min
May 5, 1:32 AM CDTSevere Thunderstorm WarningGIDPhillips36 min
May 5, 1:36 AM CDTSevere Thunderstorm WarningGIDClay, Hamilton, York54 min
May 5, 1:46 AM CDTSevere Thunderstorm WarningGIDHarlan59 min
May 5, 1:46 AM CDTSevere Thunderstorm WarningLBFWheeler28 min
May 5, 1:48 AM CDTSevere Thunderstorm WarningGIDJewell, Smith57 min
May 5, 1:57 AM CDTSevere Thunderstorm WarningLBFBlaine, Custer63 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

N. Platte/Lee Bi, NE (KLBF), launched 00:00Z, 0.4 hours before the alert went out and 106 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, N. Platte/Lee Bi, NE at 00:00Z on 2007-05-05Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 1008 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, N. Platte/Lee Bi, NE at 00:00Z on 2007-05-05The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 110 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
1008 J/kg
Mixed-layer CIN
-10 J/kg
Mixed-layer LCL
699 m above ground
0-6 km bulk shear
40 kt
0-1 km storm-relative helicity
110 m²/s²
0-3 km storm-relative helicity
151 m²/s²
Significant tornado parameter
0.4
Supercell composite
3.9

Open this sounding in Storm Lab

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 4, 8:06 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ford and 6 more84 min
May 4, 8:29 PM CDTMesoscale DiscussionSPCCheyenne, Sherman91 min
May 4, 9:41 PM CDTMesoscale DiscussionSPCDecatur, Graham, Norton, Osborne, Phillips, Rooks and 2 more94 min
May 4, 10:34 PM CDTMesoscale DiscussionSPCClay, Dickinson, Geary, Marion, Marshall, Morris and 2 more56 min
May 4, 11:10 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Comanche, Edwards, Ellsworth and 12 more95 min
May 4, 11:28 PM CDTMesoscale DiscussionSPCCheyenne, Sherman, Wallace92 min
May 5, 1:23 AM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Decatur, Ellis, Ellsworth and 15 more67 min
May 5, 1:30 AM CDTTornado WatchSPCClay, Cloud, Dickinson, Ellsworth, Jewell, Lincoln and 10 more7 hr
May 5, 3:00 AM CDTMesoscale DiscussionSPCBarton, Clay, Cloud, Dickinson, Ellsworth, Jewell and 12 more90 min
May 5, 6:59 AM CDTMesoscale DiscussionSPCRepublic, Washington61 min
May 5, 8:52 AM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Cloud, Comanche, Decatur and 40 more53 min
May 5, 9:51 AM CDTTornado Watch PDSSPCBarton, Cheyenne, Decatur, Ellis, Ellsworth, Gove and 21 more12 hr
May 5, 11:32 AM CDTMesoscale DiscussionSPCNorton, Phillips, Smith88 min
May 5, 11:57 AM CDTMesoscale DiscussionSPCBarber, Clark, Comanche, Edwards, Harper, Kingman and 3 more93 min
May 5, 12:15 PM CDTTornado Watch PDSSPCBarber, Clark, Comanche, Edwards, Finney, Ford and 16 more10 hr
May 5, 2:32 PM CDTMesoscale DiscussionSPCClay, Cloud, Dickinson, Geary, Marshall, Morris and 5 more28 min
May 5, 2:42 PM CDTTornado Watch PDSSPCBrown, Chase, Clay, Cloud, Dickinson, Geary and 15 more7 hr
May 5, 3:26 PM CDTMesoscale DiscussionSPCBarton, Clark, Comanche, Edwards, Ellis, Ford and 14 more94 min
May 5, 6:16 PM CDTMesoscale DiscussionSPCBarber, Barton, Clark, Cloud, Comanche, Edwards and 14 more59 min
May 4, 8:49 PM CDTMesoscale DiscussionSPCAntelope, Cedar, Dixon, Knox, Madison, Pierce and 1 more56 min
May 4, 9:22 PM CDTTornado WatchSPCAntelope, Boone, Cedar, Knox, Pierce11 hr
May 5, 10:35 AM CDTMesoscale DiscussionSPCAntelope, Boyd, Brown, Burt, Cedar, Cherry and 13 more85 min
May 5, 10:55 AM CDTTornado WatchSPCAntelope, Boyd, Brown, Cedar, Dakota, Dixon and 7 more6 hr
May 5, 1:01 PM CDTMesoscale DiscussionSPCBoyd, Cedar, Dakota, Dixon, Holt, Knox and 2 more89 min
May 5, 1:45 PM CDTMesoscale DiscussionSPCArthur, Box Butte, Cherry, Dawes, Deuel, Garden and 8 more2 hr
May 5, 4:09 PM CDTMesoscale DiscussionSPCBoyd, Cedar, Dakota, Dixon, Holt, Keya Paha and 4 more96 min
May 5, 4:33 PM CDTTornado Watch PDSSPCAntelope, Boyd, Brown, Cedar, Cherry, Dakota and 8 more6 hr

Nearby

Tornado Watches in Nebraska, 2007Tornado Watches in Kansas, 2007Every tornado watch in 2007

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.