Alert archive / Nebraska / Tornado Watches in 2003
Tornado Watch 573
The Storm Prediction Center issued this tornado watch at Jun 23, 2003, 8:10 PM MDT for 4 counties in Colorado; 9 counties in Nebraska. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 23, 2003, 8:10 PM MDT (02:10 UTC)
- Expired
- Jun 24, 2003, 12:00 AM MDT
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
Counties Logan County, CO, Morgan County, CO, Phillips County, CO, Sedgwick County, CO, Banner County, NE, Box Butte County, NE, Cheyenne County, NE, Deuel County, NE, Garden County, NE, Kimball County, NE, Morrill County, NE, Scotts Bluff County, NE, Sheridan County, NE
The radar
The Cheyenne radar (KCYS), 134 km from the middle of the area, began a volume at 02:12 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
11 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 8:59 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 46 min |
| Jun 23, 9:18 PM MDT | Severe Thunderstorm Warning | CYS | Kimball | 42 min |
| Jun 23, 9:42 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 48 min |
| Jun 23, 9:46 PM MDT | Severe Thunderstorm Warning | CYS | Banner | 44 min |
| Jun 23, 9:56 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 49 min |
| Jun 23, 10:17 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 58 min |
| Jun 23, 10:57 PM MDT | Severe Thunderstorm Warning | LBF | Garden | 63 min |
| Jun 23, 11:12 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 33 min |
| Jun 23, 11:14 PM MDT | Severe Thunderstorm Warning | CYS | Morrill | 31 min |
| Jun 23, 11:14 PM MDT | Severe Thunderstorm Warning | LBF | Sheridan | 61 min |
| Jun 23, 11:39 PM MDT | Severe Thunderstorm Warning | CYS | Scotts Bluff | 36 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
Denver, CO (KDNR), launched 00:00Z, 2.2 hours before the alert went out and 161 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
- 1968 J/kg
- Mixed-layer CIN
- -9 J/kg
- Mixed-layer LCL
- 1522 m above ground
- 0-6 km bulk shear
- 74 kt
- 0-1 km storm-relative helicity
- 113 m²/s²
- 0-3 km storm-relative helicity
- 579 m²/s²
- Significant tornado parameter
- 3.1
- Supercell composite
- 21.2
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 240209
SEL3
SPC WW 240210
COZ000-NEZ000-240600-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 573
NWS STORM PREDICTION CENTER NORMAN OK
810 PM MDT MON JUN 23 2003
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
NORTHEAST COLORADO
SOUTHERN NEBRASKA PANHANDLE
EFFECTIVE THIS MONDAY NIGHT FROM 810 PM UNTIL MIDNIGHT MDT.
TORNADOES...HAIL TO 2 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 50 MILES SOUTHEAST OF ALLIANCE NEBRASKA TO 55
MILES WEST SOUTHWEST OF SIDNEY NEBRASKA.
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 568...WW 569...WW 570...WW
571...WW 572...
DISCUSSION...SEVERE THUNDERSTORM NOW OVER SERN WY WILL LIKELY
CONTINUE EWD INTO THE SRN NEB PANHANDLE...WITH AT LEAST A THREAT OF
LARGE HAIL. IF STORMS CAN ROOT NEAR THE SURFACE FRONT EXTENDING
ALONG THE NEB/CO BORDER...LOW LEVEL ROTATION/TORNADO POTENTIAL WILL
INCREASE. OTHER DEVELOPMENT MAY OCCUR THIS EVENING OVER NERN CO AS
NUMEROUS SURFACE BOUNDARIES MOVE INTO THE AREA AND THE AIR MASS
REMAINS MODERATELY UNSTABLE AND WEAKLY CAPPED. THIS DEVELOPMENT
WILL LIKELY BECOME SUPERCELLULAR WITH AN ADDITIONAL THREAT OF
ISOLATED TORNADOES.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE WIND
GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500.
MEAN STORM MOTION VECTOR 26025.
...EVANS
402,1020 394,1035 415,1035 423,1020SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 23, 7:34 PM MDT | Mesoscale Discussion | SPC | Logan, Morgan, Phillips, Sedgwick, Washington, Weld and 1 more | 86 min |
| Jun 23, 11:50 PM MDT | Severe Thunderstorm Watch | SPC | Logan, Phillips, Sedgwick | 3 hr |
| Jun 24, 4:48 PM MDT | Mesoscale Discussion | SPC | Baca, Prowers | 117 min |
| Jun 23, 7:17 PM MDT | Mesoscale Discussion | SPC | Adams, Antelope, Boone, Buffalo, Butler, Clay and 37 more | 58 min |
| Jun 23, 7:20 PM MDT | Tornado Watch | SPC | Adams, Buffalo, Clay, Fillmore, Franklin, Furnas and 11 more | 3 hr |
| Jun 23, 7:55 PM MDT | Tornado Watch | SPC | Burt, Cass, Douglas, Gage, Jefferson, Johnson and 11 more | 4 hr |
| Jun 23, 8:10 PM MDT | Mesoscale Discussion | SPC | Boyd | 65 min |
| Jun 23, 9:38 PM MDT | Mesoscale Discussion | SPC | Cedar, Dakota, Dixon, Pierce, Wayne | 67 min |
| Jun 23, 9:50 PM MDT | Tornado Watch | SPC | Adams, Antelope, Boone, Buffalo, Butler, Cedar and 26 more | 5 hr |
| Jun 23, 9:50 PM MDT | Tornado Watch | SPC | Arthur, Blaine, Chase, Custer, Dawson, Frontier and 10 more | 5 hr |
| Jun 23, 10:08 PM MDT | Mesoscale Discussion | SPC | Banner, Box Butte, Cheyenne, Garden, Grant, Kimball and 3 more | 67 min |
| Jun 23, 10:45 PM MDT | Severe Thunderstorm Watch | SPC | Boyd, Brown, Cherry, Grant, Holt, Hooker and 3 more | 6 hr |
| Jun 24, 12:52 AM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Cedar, Dakota, Dixon, Garfield and 9 more | 53 min |
| Jun 24, 1:44 AM MDT | Mesoscale Discussion | SPC | Boyd, Brown, Cherry, Grant, Holt, Hooker and 3 more | 2 hr |
| Jun 24, 10:43 AM MDT | Mesoscale Discussion | SPC | Cass, Douglas, Johnson, Nemaha, Otoe, Richardson and 2 more | 2 hr |
| Jun 24, 12:29 PM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boone, Boyd, Brown, Buffalo and 22 more | 3 hr |
| Jun 24, 1:15 PM MDT | Tornado Watch | SPC | Antelope, Blaine, Boyd, Brown, Cedar, Cherry and 18 more | 8 hr |
| Jun 24, 2:47 PM MDT | Mesoscale Discussion | SPC | Chase, Dundy, Hayes, Hitchcock | 88 min |
| Jun 24, 2:55 PM MDT | Severe Thunderstorm Watch | SPC | Chase, Dawson, Dundy, Frontier, Furnas, Gosper and 3 more | 6 hr |
| Jun 24, 2:56 PM MDT | Mesoscale Discussion | SPC | Nemaha, Richardson | 64 min |
| Jun 24, 4:59 PM MDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boyd, Brown, Cedar, Dixon and 11 more | 61 min |
| Jun 24, 5:30 PM MDT | Mesoscale Discussion | SPC | Buffalo, Dawson, Dundy, Frontier, Furnas, Gosper and 7 more | 2 hr |
Nearby
Tornado Watches in Nebraska, 2003Tornado Watches in Colorado, 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.