Alert archive / Nebraska / Severe Thunderstorm Watches in 2008
Severe Thunderstorm Watch 607
The Storm Prediction Center issued this severe thunderstorm watch at Jun 25, 2008, 8:31 PM CDT for 14 counties in Nebraska; 8 counties in South Dakota. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 25, 2008, 8:31 PM CDT (01:31 UTC)
- Expired
- Jun 26, 2008, 3:30 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1.5 in
- Strongest gust expected
- 60 kt
All 22 counties
Blaine County, NE, Boyd County, NE, Brown County, NE, Cherry County, NE, Garfield County, NE, Grant County, NE, Holt County, NE, Hooker County, NE, Keya Paha County, NE, Loup County, NE, Rock County, NE, Sheridan County, NE, Thomas County, NE, Wheeler County, NE, Bennett County, SD, Gregory County, SD, Jackson County, SD, Jones County, SD, Lyman County, SD, Mellette County, SD, Todd County, SD, Tripp County, SD
The radar
The North Platte radar (KLNX), 132 km from the middle of the area, began a volume at 01:34 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 20%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
6 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 8:40 PM CDT | Severe Thunderstorm Warning | UNR | Custer, Fall River | 35 min |
| Jun 25, 9:01 PM CDT | Severe Thunderstorm Warning | LBF | Sheridan | 44 min |
| Jun 25, 9:38 PM CDT | Severe Thunderstorm Warning | LBF | Cherry, Sheridan | 52 min |
| Jun 25, 10:18 PM CDT | Severe Thunderstorm Warning | LBF | Cherry | 42 min |
| Jun 25, 10:55 PM CDT | Severe Thunderstorm Warning | UNR | Jackson | 30 min |
| Jun 26, 2:28 AM CDT | Severe Thunderstorm Warning | FSD | Aurora, Brule, Charles Mix, Douglas, Gregory | 32 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
Rapid City, SD (KUNR), launched 00:00Z, 1.5 hours before the alert went out and 186 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
- 621 J/kg
- Mixed-layer CIN
- -300 J/kg
- Mixed-layer LCL
- 1741 m above ground
- 0-6 km bulk shear
- 39 kt
- 0-1 km storm-relative helicity
- 89 m²/s²
- 0-3 km storm-relative helicity
- 217 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 260133
SEL7
SPC WW 260133
NEZ000-SDZ000-260900-
URGENT - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WATCH NUMBER 607
NWS STORM PREDICTION CENTER NORMAN OK
835 PM CDT WED JUN 25 2008
THE NWS STORM PREDICTION CENTER HAS ISSUED A
SEVERE THUNDERSTORM WATCH FOR PORTIONS OF
NORTHERN NEBRASKA
SOUTHERN SOUTH DAKOTA
EFFECTIVE THIS WEDNESDAY NIGHT AND THURSDAY MORNING FROM 835 PM
UNTIL 400 AM CDT.
HAIL TO 1.5 INCHES IN DIAMETER...THUNDERSTORM WIND GUSTS TO 70
MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE AREAS.
THE SEVERE THUNDERSTORM WATCH AREA IS APPROXIMATELY ALONG AND 70
STATUTE MILES NORTH AND SOUTH OF A LINE FROM 65 MILES NORTH OF
ALLIANCE NEBRASKA TO 30 MILES NORTHEAST OF ONEILL NEBRASKA. FOR
A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH
OUTLINE UPDATE (WOUS64 KWNS WOU7).
REMEMBER...A SEVERE THUNDERSTORM WATCH MEANS CONDITIONS ARE
FAVORABLE FOR 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. SEVERE THUNDERSTORMS CAN AND OCCASIONALLY
DO PRODUCE TORNADOES.
OTHER WATCH INFORMATION...CONTINUE...WW 605...WW 606...
DISCUSSION...SETUP APPEARS SUPPORTIVE FOR DEVELOPMENT OF A
FORWARD-PROPAGATING MCS IN WW AREA THIS EVENING. EMBEDDED SMALL
SCALE BOWS AND SUSTAINED STORMS COULD YIELD HIGH WIND /GIVEN
TEMP-DEWPOINT SPREADS BOTH IN BOUNDARY LAYER AND ALOFT/...AND
POSSIBLY SVR HAIL...DESPITE MODEST WIND FIELD.
AVIATION...A FEW SEVERE THUNDERSTORMS WITH HAIL SURFACE AND ALOFT
TO 1.5 INCHES. EXTREME TURBULENCE AND SURFACE WIND GUSTS TO 60
KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO 500. MEAN STORM
MOTION VECTOR 28025.
...CORFIDISPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 25, 7:06 PM CDT | Severe Thunderstorm Watch | SPC | Burt, Cuming, Dodge, Douglas, Sarpy, Saunders and 2 more | 7 hr |
| Jun 25, 8:10 PM CDT | Mesoscale Discussion | SPC | Cherry, Grant, Sheridan | 95 min |
| Jun 25, 10:18 PM CDT | Mesoscale Discussion | SPC | Burt, Cass, Cuming, Dodge, Douglas, Lancaster and 4 more | 87 min |
| Jun 25, 11:18 PM CDT | Mesoscale Discussion | SPC | Antelope, Arthur, Blaine, Boone, Boyd, Brown and 17 more | 87 min |
| Jun 26, 3:48 AM CDT | Mesoscale Discussion | SPC | Antelope, Blaine, Boone, Boyd, Brown, Burt and 38 more | 87 min |
| Jun 26, 6:38 AM CDT | Severe Thunderstorm Watch | SPC | Burt, Cedar, Dakota, Dixon, Knox, Pierce and 2 more | 6 hr |
| Jun 26, 7:51 AM CDT | Mesoscale Discussion | SPC | Boyd, Cedar, Dakota, Dixon, Holt, Keya Paha and 4 more | 84 min |
| Jun 26, 9:53 AM CDT | Mesoscale Discussion | SPC | Burt, Cedar, Cuming, Dakota, Dixon, Knox and 5 more | 97 min |
| Jun 26, 12:05 PM CDT | Mesoscale Discussion | SPC | Burt, Butler, Cass, Colfax, Cuming, Dakota and 14 more | 55 min |
| Jun 26, 3:48 PM CDT | Mesoscale Discussion | SPC | Arthur, Box Butte, Cherry, Dawes, Garden, Grant and 4 more | 87 min |
| Jun 26, 3:54 PM CDT | Mesoscale Discussion | SPC | Webster | 96 min |
| Jun 26, 4:50 PM CDT | Severe Thunderstorm Watch | SPC | Franklin, Gage, Harlan, Jefferson, Nuckolls, Pawnee and 3 more | 8 hr |
| Jun 26, 5:50 PM CDT | Mesoscale Discussion | SPC | Arthur, Blaine, Brown, Chase, Cherry, Custer and 16 more | 25 min |
| Jun 26, 6:04 PM CDT | Severe Thunderstorm Watch | SPC | Arthur, Blaine, Boyd, Brown, Buffalo, Chase and 31 more | 6 hr |
| Jun 26, 6:28 PM CDT | Mesoscale Discussion | SPC | Brown, Butte, Campbell, Corson, Custer, Dewey and 17 more | 62 min |
Nearby
Severe Thunderstorm Watches in Nebraska, 2008Severe Thunderstorm Watches in South Dakota, 2008Every severe thunderstorm watch in 2008
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.