Alert archive / Nebraska / Tornado Watches in 2004
Tornado Watch 430
The Storm Prediction Center issued this tornado watch at Jun 10, 2004, 6:25 PM CDT for 17 counties in Nebraska. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 10, 2004, 6:25 PM CDT (23:25 UTC)
- Expired
- Jun 10, 2004, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
Counties Blaine County, NE, Boyd County, NE, Brown County, NE, Custer County, NE, Garfield County, NE, Greeley County, NE, Holt County, NE, Howard County, NE, Keya Paha County, NE, Logan County, NE, Loup County, NE, Merrick County, NE, Rock County, NE, Sherman County, NE, Thomas County, NE, Valley County, NE, Wheeler County, NE
The radar
The North Platte radar (KLNX), 111 km from the middle of the area, began a volume at 23:27 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
8 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 10, 7:09 PM CDT | Severe Thunderstorm Warning | LBF | Cherry, Thomas | 51 min |
| Jun 10, 8:01 PM CDT | Severe Thunderstorm Warning | LBF | Hooker, Thomas | 44 min |
| Jun 10, 8:10 PM CDT | Severe Thunderstorm Warning | LBF | Custer | 65 min |
| Jun 10, 9:16 PM CDT | Severe Thunderstorm Warning | LBF | Custer, Garfield, Loup | 44 min |
| Jun 10, 9:20 PM CDT | Severe Thunderstorm Warning | LBF | Holt, Rock | 55 min |
| Jun 10, 9:23 PM CDT | Severe Thunderstorm Warning | GID | Valley | 52 min |
| Jun 10, 10:26 PM CDT | Severe Thunderstorm Warning | GID | Sherman | 64 min |
| Jun 10, 11:00 PM CDT | Severe Thunderstorm Warning | GID | Hall, Howard | 60 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, 11.4 hours before the alert went out and 164 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
- 564 J/kg
- Mixed-layer CIN
- -67 J/kg
- Mixed-layer LCL
- 499 m above ground
- 0-6 km bulk shear
- 29 kt
- 0-1 km storm-relative helicity
- 85 m²/s²
- 0-3 km storm-relative helicity
- 235 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.1
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 102327
SEL0
SPC WW 102325
NEZ000-110400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 430
NWS STORM PREDICTION CENTER NORMAN OK
625 PM CDT THU JUN 10 2004
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
CENTRAL AND NORTH CENTRAL NEBRASKA
EFFECTIVE THIS THURSDAY EVENING FROM 625 PM UNTIL 1100 PM CDT.
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 60 STATUTE MILES EAST AND WEST
OF A LINE FROM 30 MILES NORTH NORTHEAST OF AINSWORTH NEBRASKA TO
35 MILES SOUTHEAST OF BROKEN BOW 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 424...WW 425...WW 427...WW
428...WW 429...
DISCUSSION...SUPERCELLS IN SRN PART OF WW 425 WILL LIKELY CONTINUE
NEWD INTO CENTRAL AND NORTH CENTRAL NEB DURING THE NEXT SVRL HRS.
ENVIRONMENT OF MLCAPE TO 2000 J/KG...100-150 M2/S2 LOW LEVEL SRH AND
LOW LCLS SHOULD REMAIN FAVORABLE FOR TORNADOES...BEFORE ACTIVITY
CONSOLIDATES INTO CLUSTERS/BANDS.
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 23030.
...CORFIDI
425,0983 410,0980 410,1001 425,1005SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 7:40 PM CDT | Severe Thunderstorm Watch | SPC | Arthur, Box Butte, Chase, Cheyenne, Deuel, Dundy and 12 more | 4 hr |
| Jun 9, 10:37 PM CDT | Mesoscale Discussion | SPC | Arthur, Chase, Dundy, Frontier, Garden, Grant and 9 more | 53 min |
| Jun 10, 1:14 PM CDT | Mesoscale Discussion | SPC | Box Butte, Cherry, Dawes, Garden, Grant, Morrill and 3 more | 91 min |
| Jun 10, 2:00 PM CDT | Tornado Watch | SPC | Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 9 more | 7 hr |
| Jun 10, 4:55 PM CDT | Tornado Watch | SPC | Dawson, Franklin, Frontier, Furnas, Gosper, Harlan and 6 more | 5 hr |
| Jun 10, 4:59 PM CDT | Mesoscale Discussion | SPC | Arthur, Box Butte, Cherry, Cheyenne, Dawes, Deuel and 10 more | 91 min |
| Jun 10, 6:08 PM CDT | Mesoscale Discussion | SPC | Blaine, Boyd, Brown, Custer, Garfield, Greeley and 8 more | 97 min |
Nearby
Tornado Watches in Nebraska, 2004Every tornado watch in 2004
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.