Alert archive / Texas / Tornado Watches in 2007
Tornado Watch 27
The Storm Prediction Center issued this tornado watch at Feb 23, 2007, 3:11 PM CST for 10 counties in Kansas; 11 counties in Oklahoma; 27 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Feb 23, 2007, 3:11 PM CST (21:11 UTC)
- Expired
- Feb 23, 2007, 10:00 PM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 48 counties
Clark County, KS, Comanche County, KS, Ford County, KS, Grant County, KS, Gray County, KS, Haskell County, KS, Kiowa County, KS, Meade County, KS, Seward County, KS, Stevens County, KS, Beaver County, OK, Beckham County, OK, Ellis County, OK, Greer County, OK, Harmon County, OK, Harper County, OK, Jackson County, OK, Roger Mills County, OK, Texas County, OK, Woods County, OK, Woodward County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Gray County, TX, Hall County, TX, Hansford County, TX, Hardeman County, TX, Hemphill County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Knox County, TX, Lipscomb County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Stonewall County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 121 km from the middle of the area, began a volume at 21:13 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 40%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 23, 4:48 PM CST | Severe Thunderstorm Warning | AMA | Donley | 27 min |
| Feb 23, 5:15 PM CST | Severe Thunderstorm Warning | LUB | Briscoe, Hall | 30 min |
| Feb 23, 5:22 PM CST | Severe Thunderstorm Warning | AMA | Donley, Gray | 53 min |
| Feb 23, 6:08 PM CST | Tornado Warning | AMA | Gray, Wheeler | 37 min |
| Feb 23, 6:17 PM CST | Severe Thunderstorm Warning | AMA | Lipscomb | 43 min |
| Feb 23, 6:27 PM CST | Severe Thunderstorm Warning | AMA | Collingsworth | 63 min |
| Feb 23, 6:32 PM CST | Severe Thunderstorm Warning | OUN | Ellis, Harper | 43 min |
| Feb 23, 6:52 PM CST | Severe Thunderstorm Warning | AMA | Beaver | 38 min |
| Feb 23, 7:16 PM CST | Severe Thunderstorm Warning | AMA | Ochiltree | 29 min |
| Feb 23, 7:26 PM CST | Severe Thunderstorm Warning | DDC | Clark | 43 min |
| Feb 23, 7:45 PM CST | Severe Thunderstorm Warning | AMA | Texas | 45 min |
| Feb 23, 8:26 PM CST | Severe Thunderstorm Warning | DDC | Seward | 49 min |
| Feb 23, 8:27 PM CST | Severe Thunderstorm Warning | OUN | Woodward | 48 min |
| Feb 23, 8:58 PM CST | Severe Thunderstorm Warning | AMA | Hemphill, Wheeler | 62 min |
| Feb 23, 9:02 PM CST | Tornado Warning | OUN | Woodward | 28 min |
| Feb 23, 9:10 PM CST | Severe Thunderstorm Warning | OUN | Ellis, Roger Mills | 35 min |
| Feb 23, 9:18 PM CST | Severe Thunderstorm Warning | DDC | Meade | 42 min |
| Feb 23, 9:28 PM CST | Severe Thunderstorm Warning | OUN | Woods, Woodward | 47 min |
| Feb 23, 9:42 PM CST | Severe Thunderstorm Warning | OUN | Ellis | 18 min |
| Feb 23, 9:47 PM CST | Severe Thunderstorm Warning | OUN | Roger Mills | 28 min |
| Feb 23, 9:52 PM CST | Tornado Warning | DDC | Gray, Meade | 23 min |
| Feb 23, 9:54 PM CST | Severe Thunderstorm Warning | DDC | Gray, Haskell | 51 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 9.2 hours before the alert went out and 121 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
- 0 J/kg
- Mixed-layer CIN
- No buoyant parcel
- Mixed-layer LCL
- 3061 m above ground
- 0-6 km bulk shear
- 37 kt
- 0-1 km storm-relative helicity
- 126 m²/s²
- 0-3 km storm-relative helicity
- 116 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 232112
SEL7
SPC WW 232112
KSZ000-OKZ000-TXZ000-240400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 27
NWS STORM PREDICTION CENTER NORMAN OK
310 PM CST FRI FEB 23 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF SOUTHWEST KANSAS
PARTS OF WESTERN OKLAHOMA
LARGE PART OF EASTERN TEXAS PANHANDLE
EFFECTIVE THIS FRIDAY AFTERNOON AND EVENING FROM 310 PM UNTIL
1000 PM CST.
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 APPROXIMATELY ALONG AND 60 STATUTE
MILES EAST AND WEST OF A LINE FROM 5 MILES NORTHWEST OF DODGE
CITY KANSAS TO 70 MILES SOUTHEAST OF LUBBOCK TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU7).
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...APPROACH OF VERY STRONG UPPER TROUGH/MID LEVEL JET AND
RAPID ADVECTION OF LOW LEVEL MOISTURE WILL SUPPORT INCREASING
POTENTIAL F0R SUPERCELL DEVELOPMENT THROUGH THE EVENING. INITIAL
STORMS EXPECTED ALONG/JUST E OF N/S DRY LINE TX PANHANDLE AND THEN
MOVING RAPIDLY NEWD INTO SWRN KS. ALONG WITH LARGE HAIL...THE VERY
STRONG SHEAR PROFILES SUPPORT TORNADO POTENTIAL WITH ANY SUPERCELL.
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
450. MEAN STORM MOTION VECTOR 24040.
...HALESSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Feb 23, 1:54 PM CST | Mesoscale Discussion | SPC | Borden, Briscoe, Childress, Collingsworth, Cottle, Crosby and 13 more | 2 hr |
| Feb 23, 5:51 PM CST | Mesoscale Discussion | SPC | Borden, Coke, Concho, Crockett, Dawson, Fisher and 17 more | 114 min |
Nearby
Tornado Watches in Texas, 2007Tornado Watches in Oklahoma, 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.