Alert archive / Nebraska / Tornado Watches in 2007
Tornado Watch 232
The Storm Prediction Center issued this tornado watch at May 5, 2007, 9:51 AM CDT for 27 counties in Kansas; 40 counties in Nebraska. It was in force for 12 hr.
The area
The outline as issued.
The facts
- Issued
- May 5, 2007, 9:51 AM CDT (14:51 UTC)
- Expired
- May 5, 2007, 10:00 PM CDT
- In force
- 12 hr
- Issued by
- the Storm Prediction Center
- Particularly dangerous situation
- Yes
- Largest hail expected
- 4 in
- Strongest gust expected
- 80 kt
All 67 counties
Barton County, KS, Cheyenne County, KS, Decatur County, KS, Ellis County, KS, Ellsworth County, KS, Gove County, KS, Graham County, KS, Jewell County, KS, Lane County, KS, Lincoln County, KS, Logan County, KS, Mitchell County, KS, Ness County, KS, Norton County, KS, Osborne County, KS, Phillips County, KS, Rawlins County, KS, Rice County, KS, Rooks County, KS, Rush County, KS, Russell County, KS, Scott County, KS, Sheridan County, KS, Sherman County, KS, Smith County, KS, Thomas County, KS, Trego County, KS, Adams County, NE, Blaine County, NE, Boone County, NE, Buffalo County, NE, Chase County, NE, Clay County, NE, Custer County, NE, Dawson County, NE, Dundy County, NE, Franklin County, NE, Frontier County, NE, Furnas County, NE, Garfield County, NE, Gosper County, NE, Greeley County, NE, Hall County, NE, Hamilton County, NE, Harlan County, NE, Hayes County, NE, Hitchcock County, NE, Hooker County, NE, Howard County, NE, Kearney County, NE, Keith County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, McPherson County, NE, Merrick County, NE, Nance County, NE, Nuckolls County, NE, Perkins County, NE, Phelps County, NE, Polk County, NE, Red Willow County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Webster County, NE, Wheeler County, NE
The radar
The Grand Island radar (KUEX), 150 km from the middle of the area, began a volume at 14:51 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
- 95%
- One or more EF2 to EF5 tornadoes
- 95%
- Ten or more severe wind reports
- 90%
- One or more gusts of 65 knots or more
- 80%
- Ten or more severe hail reports
- 90%
- One or more hailstones of 2 inches or more
- 80%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
61 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 5, 10:32 AM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 58 min |
| May 5, 10:35 AM CDT | Severe Thunderstorm Warning | LBF | Custer | 55 min |
| May 5, 10:56 AM CDT | Severe Thunderstorm Warning | LBF | Blaine | 49 min |
| May 5, 11:26 AM CDT | Severe Thunderstorm Warning | GID | Nance | 23 min |
| May 5, 11:42 AM CDT | Severe Thunderstorm Warning | GID | Greeley | 33 min |
| May 5, 11:49 AM CDT | Severe Thunderstorm Warning | OAX | Boone, Madison | 41 min |
| May 5, 12:10 PM CDT | Severe Thunderstorm Warning | GID | Dawson | 16 min |
| May 5, 12:18 PM CDT | Severe Thunderstorm Warning | LBF | Custer, Lincoln | 42 min |
| May 5, 12:24 PM CDT | Tornado Warning | LBF | Custer | 51 min |
| May 5, 12:46 PM CDT | Severe Thunderstorm Warning | DDC | Ness, Trego | 44 min |
| May 5, 1:00 PM CDT | Severe Thunderstorm Warning | LBF | Thomas | 30 min |
| May 5, 1:01 PM CDT | Severe Thunderstorm Warning | DDC | Hodgeman, Ness, Trego | 44 min |
| May 5, 1:15 PM CDT | Tornado Warning | LBF | Blaine, Custer | 45 min |
| May 5, 1:37 PM CDT | Severe Thunderstorm Warning | DDC | Ellis | 38 min |
| May 5, 1:44 PM CDT | Severe Thunderstorm Warning | LBF | Custer, Lincoln, Logan | 61 min |
| May 5, 1:57 PM CDT | Tornado Warning | LBF | Blaine, Brown | 63 min |
| May 5, 1:58 PM CDT | Severe Thunderstorm Warning | DDC | Hodgeman, Ness, Pawnee, Rush | 31 min |
| May 5, 2:10 PM CDT | Severe Thunderstorm Warning | DDC | Rush | 35 min |
| May 5, 2:11 PM CDT | Severe Thunderstorm Warning | ICT | Barton, Russell | 52 min |
| May 5, 2:12 PM CDT | Severe Thunderstorm Warning | DDC | Ellis | 33 min |
| May 5, 2:16 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Thomas | 29 min |
| May 5, 2:22 PM CDT | Severe Thunderstorm Warning | GID | Clay, Hamilton | 38 min |
| May 5, 2:22 PM CDT | Severe Thunderstorm Warning | LBF | Perkins | 53 min |
| May 5, 2:25 PM CDT | Tornado Warning | LBF | Perkins | 30 min |
| May 5, 2:27 PM CDT | Severe Thunderstorm Warning | GID | Dawson | 14 min |
| May 5, 2:32 PM CDT | Severe Thunderstorm Warning | OAX | Boone | 28 min |
| May 5, 2:36 PM CDT | Tornado Warning | LBF | Custer | 34 min |
| May 5, 2:44 PM CDT | Severe Thunderstorm Warning | GID | Osborne | 31 min |
| May 5, 2:45 PM CDT | Tornado Warning | LBF | Blaine, Brown | 60 min |
| May 5, 2:51 PM CDT | Severe Thunderstorm Warning | LBF | Keith | 39 min |
| May 5, 3:13 PM CDT | Severe Thunderstorm Warning | DDC | Pawnee, Rush | 47 min |
| May 5, 3:13 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer | 37 min |
| May 5, 3:13 PM CDT | Tornado Warning | LBF | Keith | 18 min |
| May 5, 3:20 PM CDT | Severe Thunderstorm Warning | GID | Clay, Nuckolls | 40 min |
| May 5, 3:45 PM CDT | Severe Thunderstorm Warning | OAX | Boone | 30 min |
| May 5, 4:09 PM CDT | Severe Thunderstorm Warning | GID | Franklin, Webster | 29 min |
| May 5, 4:30 PM CDT | Flash Flood Warning | LBF | Blaine, Brown, Custer, Keya Paha | 3 hr |
| May 5, 4:30 PM CDT | Tornado Warning | LBF | Holt, Loup, Rock | 45 min |
| May 5, 4:37 PM CDT | Severe Thunderstorm Warning | GID | Polk, York | 53 min |
| May 5, 5:09 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Custer | 51 min |
| May 5, 5:46 PM CDT | Severe Thunderstorm Warning | ICT | Barton, Reno, Rice | 29 min |
| May 5, 5:54 PM CDT | Tornado Warning | GID | Osborne, Smith | 37 min |
| May 5, 6:01 PM CDT | Tornado Warning | ICT | Barton, Rice | 44 min |
| May 5, 6:33 PM CDT | Tornado Warning | ICT | Barton | 42 min |
| May 5, 6:54 PM CDT | Flash Flood Warning | ICT | Barton | 9 hr |
| May 5, 7:12 PM CDT | Tornado Warning | ICT | Barton, Ellsworth, Russell | 48 min |
| May 5, 7:41 PM CDT | Flash Flood Warning | ICT | Lincoln, Russell | 9 hr |
| May 5, 7:59 PM CDT | Tornado Warning | ICT | Barton, Ellsworth, Lincoln, Russell | 46 min |
| May 5, 8:35 PM CDT | Tornado Warning | ICT | Barton | 40 min |
| May 5, 8:36 PM CDT | Tornado Warning | GID | Mitchell | 54 min |
| May 5, 8:44 PM CDT | Tornado Warning | ICT | Lincoln | 22 min |
| May 5, 9:04 PM CDT | Tornado Warning | GID | Mitchell | 41 min |
| May 5, 9:10 PM CDT | Severe Thunderstorm Warning | GID | Greeley, Howard | 50 min |
| May 5, 9:12 PM CDT | Tornado Warning | ICT | Barton, Ellsworth, Rice | 33 min |
| May 5, 9:22 PM CDT | Tornado Warning | GID | Greeley | 38 min |
| May 5, 9:32 PM CDT | Tornado Warning | GID | Mitchell | 26 min |
| May 5, 9:36 PM CDT | Severe Thunderstorm Warning | GID | Jewell | 38 min |
| May 5, 9:42 PM CDT | Tornado Warning | ICT | Barton, Ellsworth, Rice, Russell | 48 min |
| May 5, 9:42 PM CDT | Severe Thunderstorm Warning | OAX | Boone | 33 min |
| May 5, 9:44 PM CDT | Flash Flood Warning | ICT | Ellsworth | 6 hr |
| May 5, 9:49 PM CDT | Tornado Warning | ICT | Barton | 41 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 12:00Z, 2.9 hours before the alert went out and 74 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.
- Mixed-layer CAPE
- 175 J/kg
- Mixed-layer CIN
- -216 J/kg
- Mixed-layer LCL
- 820 m above ground
- 0-6 km bulk shear
- 59 kt
- 0-1 km storm-relative helicity
- 138 m²/s²
- 0-3 km storm-relative helicity
- 199 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 2.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 051458
SEL2
SPC WW 051458
KSZ000-NEZ000-060300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 232
NWS STORM PREDICTION CENTER NORMAN OK
955 AM CDT SAT MAY 5 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF WESTERN AND CENTRAL KANSAS
PARTS OF SOUTHWEST AND CENTRAL NEBRASKA
EFFECTIVE THIS SATURDAY MORNING AND EVENING FROM 955 AM UNTIL
1000 PM CDT.
...THIS IS A PARTICULARLY DANGEROUS SITUATION...
DESTRUCTIVE TORNADOES...LARGE HAIL TO 4 INCHES IN DIAMETER...
THUNDERSTORM WIND GUSTS TO 90 MPH...AND DANGEROUS LIGHTNING ARE
POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 100 STATUTE
MILES EAST AND WEST OF A LINE FROM 45 MILES NORTH NORTHWEST OF
BROKEN BOW NEBRASKA TO 55 MILES SOUTHWEST OF RUSSELL KANSAS. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU2).
REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.
DISCUSSION...VERY POTENT TORNADIC SUPERCELL PATTERN IN PLACE ACROSS
WATCH AREA AS AIR MASS IS EXTREMELY UNSTABLE WITH VERY FAVORABLE
SHEAR PROFILES. WITH LITTLE INHIBITION REMAINING ALONG E OF DRY
LINE...STORMS WILL RAPIDLY BECOME SEVERE BY EARLY THIS AFTERNOON WRN
KS INTO SWRN NEB. TORNADIC SUPERCELLS WILL DEVELOP WITH POTENTIAL
FOR LONG TRACK/VIOLENT TORNADOS. AS DRY LINE REMAINS WRN KS THRU
THE AFTERNOON...ADDITIONAL DEVELOPMENT OF TORNADIC SUPERCELLS ARE
LIKELY OFF THE DRY LINE THRU THE EVENING HOURS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 80 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
600. MEAN STORM MOTION VECTOR 22040.
...HALESSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 4, 7:26 PM CDT | Tornado Watch | SPC | Decatur, Gove, Graham, Jewell, Mitchell, Norton and 5 more | 7 hr |
| May 4, 8:06 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Comanche, Edwards, Ford and 6 more | 84 min |
| May 4, 8:29 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Sherman | 91 min |
| May 4, 9:41 PM CDT | Mesoscale Discussion | SPC | Decatur, Graham, Norton, Osborne, Phillips, Rooks and 2 more | 94 min |
| May 4, 10:34 PM CDT | Mesoscale Discussion | SPC | Clay, Dickinson, Geary, Marion, Marshall, Morris and 2 more | 56 min |
| May 4, 11:10 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Comanche, Edwards, Ellsworth and 12 more | 95 min |
| May 4, 11:28 PM CDT | Mesoscale Discussion | SPC | Cheyenne, Sherman, Wallace | 92 min |
| May 5, 1:23 AM CDT | Mesoscale Discussion | SPC | Barton, Clay, Cloud, Decatur, Ellis, Ellsworth and 15 more | 67 min |
| May 5, 1:30 AM CDT | Tornado Watch | SPC | Clay, Cloud, Dickinson, Ellsworth, Jewell, Lincoln and 10 more | 7 hr |
| May 5, 3:00 AM CDT | Mesoscale Discussion | SPC | Barton, Clay, Cloud, Dickinson, Ellsworth, Jewell and 12 more | 90 min |
| May 5, 6:59 AM CDT | Mesoscale Discussion | SPC | Republic, Washington | 61 min |
| May 5, 8:52 AM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Cloud, Comanche, Decatur and 40 more | 53 min |
| May 5, 11:32 AM CDT | Mesoscale Discussion | SPC | Norton, Phillips, Smith | 88 min |
| May 5, 11:57 AM CDT | Mesoscale Discussion | SPC | Barber, Clark, Comanche, Edwards, Harper, Kingman and 3 more | 93 min |
| May 5, 12:15 PM CDT | Tornado Watch | SPC | Barber, Clark, Comanche, Edwards, Finney, Ford and 16 more | 10 hr |
| May 5, 2:32 PM CDT | Mesoscale Discussion | SPC | Clay, Cloud, Dickinson, Geary, Marshall, Morris and 5 more | 28 min |
| May 5, 2:42 PM CDT | Tornado Watch | SPC | Brown, Chase, Clay, Cloud, Dickinson, Geary and 15 more | 7 hr |
| May 5, 3:26 PM CDT | Mesoscale Discussion | SPC | Barton, Clark, Comanche, Edwards, Ellis, Ford and 14 more | 94 min |
| May 5, 6:16 PM CDT | Mesoscale Discussion | SPC | Barber, Barton, Clark, Cloud, Comanche, Edwards and 14 more | 59 min |
| May 4, 8:49 PM CDT | Mesoscale Discussion | SPC | Antelope, Cedar, Dixon, Knox, Madison, Pierce and 1 more | 56 min |
| May 4, 9:22 PM CDT | Tornado Watch | SPC | Antelope, Boone, Cedar, Knox, Pierce | 11 hr |
| May 5, 10:35 AM CDT | Mesoscale Discussion | SPC | Antelope, Boyd, Brown, Burt, Cedar, Cherry and 13 more | 85 min |
| May 5, 10:55 AM CDT | Tornado Watch | SPC | Antelope, Boyd, Brown, Cedar, Dakota, Dixon and 7 more | 6 hr |
| May 5, 1:01 PM CDT | Mesoscale Discussion | SPC | Boyd, Cedar, Dakota, Dixon, Holt, Knox and 2 more | 89 min |
| May 5, 1:45 PM CDT | Mesoscale Discussion | SPC | Arthur, Box Butte, Cherry, Dawes, Deuel, Garden and 8 more | 2 hr |
| May 5, 4:09 PM CDT | Mesoscale Discussion | SPC | Boyd, Cedar, Dakota, Dixon, Holt, Keya Paha and 4 more | 96 min |
| May 5, 4:33 PM CDT | Tornado Watch | SPC | Antelope, Boyd, Brown, Cedar, Cherry, Dakota and 8 more | 6 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.