Alert archive / Nebraska / Tornado Watches in 2003
Tornado Watch 568
The Storm Prediction Center issued this tornado watch at Jun 23, 2003, 5:35 PM CDT for 43 counties in Nebraska; 8 counties in South Dakota. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2003, 5:35 PM CDT (22:35 UTC)
- Expired
- Jun 23, 2003, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
All 51 counties
Antelope County, NE, Arthur County, NE, Blaine County, NE, Boone County, NE, Boyd County, NE, Brown County, NE, Cedar County, NE, Chase County, NE, Cherry County, NE, Colfax County, NE, Cuming County, NE, Custer County, NE, Dakota County, NE, Dawson County, NE, Dixon County, NE, Dodge County, NE, Garfield County, NE, Grant County, NE, Greeley County, NE, Hayes County, NE, Holt County, NE, Hooker County, NE, Howard County, NE, Keith County, NE, Keya Paha County, NE, Knox County, NE, Lincoln County, NE, Logan County, NE, Loup County, NE, Madison County, NE, McPherson County, NE, Nance County, NE, Perkins County, NE, Pierce County, NE, Platte County, NE, Rock County, NE, Sherman County, NE, Stanton County, NE, Thomas County, NE, Thurston County, NE, Valley County, NE, Wayne County, NE, Wheeler County, NE, Bon Homme County, SD, Charles Mix County, SD, Clay County, SD, Hutchinson County, SD, Lincoln County, SD, Turner County, SD, Union County, SD, Yankton County, SD
The radar
The North Platte radar (KLNX), 68 km from the middle of the area, began a volume at 22:38 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
30 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 8:04 PM CDT | Severe Thunderstorm Warning | LBF | Holt | 56 min |
| Jun 23, 8:08 PM CDT | Severe Thunderstorm Warning | OAX | Antelope, Knox, Pierce | 22 min |
| Jun 23, 8:31 PM CDT | Severe Thunderstorm Warning | OAX | Knox | 44 min |
| Jun 23, 8:49 PM CDT | Tornado Warning | OAX | Antelope | 26 min |
| Jun 23, 9:00 PM CDT | Severe Thunderstorm Warning | OAX | Cedar | 45 min |
| Jun 23, 9:02 PM CDT | Severe Thunderstorm Warning | LBF | Holt | 58 min |
| Jun 23, 9:09 PM CDT | Tornado Warning | OAX | Cedar | 51 min |
| Jun 23, 9:14 PM CDT | Tornado Warning | OAX | Antelope, Knox | 31 min |
| Jun 23, 9:24 PM CDT | Severe Thunderstorm Warning | LBF | Hayes, Lincoln | 66 min |
| Jun 23, 9:36 PM CDT | Tornado Warning | OAX | Antelope | 24 min |
| Jun 23, 9:38 PM CDT | Severe Thunderstorm Warning | GID | Dawson | 82 min |
| Jun 23, 9:45 PM CDT | Tornado Warning | OAX | Knox | 30 min |
| Jun 23, 10:02 PM CDT | Tornado Warning | LBF | Hayes | 28 min |
| Jun 23, 10:04 PM CDT | Tornado Warning | FSD | Dixon | 56 min |
| Jun 23, 10:04 PM CDT | Tornado Warning | GID | Dawson | 41 min |
| Jun 23, 10:05 PM CDT | Severe Thunderstorm Warning | LBF | Chase | 25 min |
| Jun 23, 10:15 PM CDT | Tornado Warning | OAX | Cedar | 30 min |
| Jun 23, 10:20 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 25 min |
| Jun 23, 10:24 PM CDT | Severe Thunderstorm Warning | LBF | Blaine, Chase, Garfield, Hayes, Lincoln, Loup | 66 min |
| Jun 23, 10:26 PM CDT | Severe Thunderstorm Warning | LBF | Lincoln | 64 min |
| Jun 23, 10:28 PM CDT | Severe Thunderstorm Warning | GID | Sherman | 72 min |
| Jun 23, 10:32 PM CDT | Severe Thunderstorm Warning | LBF | Hayes | 58 min |
| Jun 23, 10:40 PM CDT | Severe Thunderstorm Warning | FSD | Clay, Union | 50 min |
| Jun 23, 10:41 PM CDT | Severe Thunderstorm Warning | OAX | Platte | 64 min |
| Jun 23, 10:42 PM CDT | Severe Thunderstorm Warning | GID | Dawson | 48 min |
| Jun 23, 10:43 PM CDT | Severe Thunderstorm Warning | GID | Valley | 62 min |
| Jun 23, 10:45 PM CDT | Severe Thunderstorm Warning | OAX | Cedar | 30 min |
| Jun 23, 10:46 PM CDT | Severe Thunderstorm Warning | OAX | Platte | 59 min |
| Jun 23, 10:47 PM CDT | Severe Thunderstorm Warning | FSD | Dakota | 58 min |
| Jun 23, 11:00 PM CDT | Severe Thunderstorm Warning | FSD | Dixon | 30 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, 10.6 hours before the alert went out and 128 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
- 1863 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 608 m above ground
- 0-6 km bulk shear
- 47 kt
- 0-1 km storm-relative helicity
- 129 m²/s²
- 0-3 km storm-relative helicity
- 337 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 19.9
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 232233
SEL8
SPC WW 232235
NEZ000-SDZ000-240400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 568
NWS STORM PREDICTION CENTER NORMAN OK
535 PM CDT MON JUN 23 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND NORTHEASTERN NEBRASKA
SOUTHEASTERN SOUTH DAKOTA
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 535 PM UNTIL 1100
PM CDT.
TORNADOES...HAIL TO 4 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS
TO 70 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE TORNADO WATCH AREA IS ALONG AND 75 STATUTE MILES NORTH AND
SOUTH OF A LINE FROM 65 MILES SOUTHWEST OF MULLEN NEBRASKA TO 50
MILES EAST SOUTHEAST OF YANKTON SOUTH DAKOTA.
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.
OTHER WATCH INFORMATION...CONTINUE...WW 566...WW 567...
DISCUSSION...EXPLOSIVE SEVERE THUNDERSTORM DEVELOPMENT IS EXPECTED
IN THE NEXT 1-2 HOURS IN BAND OF DEEPER CONVERGENCE AND INCREASING
CUMULUS FIELD ACROSS CENTRAL NEB. AIR MASS IS EXTREMELY UNSTABLE
WITH STRONG DEEP LAYER SHEAR...SUGGESTING LONG-LIVED AND POTENTIALLY
TORNADIC SUPERCELLS. A FEW VERY LARGE HAIL EVENTS ARE ALSO
EXPECTED.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 4 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 24020.
...EVANS
422,1015 434,0962 413,0962 401,1015SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 22, 8:30 PM CDT | Tornado Watch | SPC | Adams, Antelope, Boone, Butler, Cedar, Clay and 31 more | 5 hr |
| Jun 22, 10:32 PM CDT | Mesoscale Discussion | SPC | Adams, Boone, Butler, Clay, Colfax, Fillmore and 19 more | 88 min |
| Jun 22, 11:20 PM CDT | Severe Thunderstorm Watch | SPC | Adams, Buffalo, Butler, Cass, Clay, Douglas and 24 more | 6 hr |
| Jun 23, 1:04 AM CDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Cedar, Cherry, Holt and 5 more | 116 min |
| Jun 23, 1:49 AM CDT | Mesoscale Discussion | SPC | Adams, Buffalo, Clay, Fillmore, Franklin, Gage and 17 more | 116 min |
| Jun 23, 3:13 AM CDT | Mesoscale Discussion | SPC | Antelope, Boone, Burt, Cedar, Colfax, Cuming and 17 more | 2 hr |
| Jun 23, 1:42 PM CDT | Mesoscale Discussion | SPC | Antelope, Arthur, Blaine, Boone, Brown, Custer and 18 more | 3 hr |
| Jun 23, 6:00 PM CDT | Severe Thunderstorm Watch | SPC | Dundy, Hitchcock, Red Willow | 6 hr |
| Jun 23, 6:45 PM CDT | Tornado Watch | SPC | Boyd | 4 hr |
| Jun 22, 8:05 PM CDT | Mesoscale Discussion | SPC | Brown, Clark, Codington, Day, Deuel, Edmunds and 6 more | 55 min |
| Jun 23, 10:16 AM CDT | Mesoscale Discussion | SPC | Grant, Roberts | 119 min |
| Jun 23, 6:24 PM CDT | Mesoscale Discussion | SPC | Aurora, Brookings, Charles Mix, Codington, Davison, Deuel and 14 more | 66 min |
Nearby
Tornado Watches in Nebraska, 2003Tornado Watches in South Dakota, 2003Every tornado watch in 2003
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.