Alert archive / Texas / Tornado Watches in 2007
Tornado Watch 167
The Storm Prediction Center issued this tornado watch at Apr 23, 2007, 5:35 PM CDT for 40 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 23, 2007, 5:35 PM CDT (22:35 UTC)
- Expired
- Apr 23, 2007, 11:00 PM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3 in
- Strongest gust expected
- 60 kt
All 40 counties
Baylor County, TX, Borden County, TX, Callahan County, TX, Coke County, TX, Cottle County, TX, Crane County, TX, Crosby County, TX, Dawson County, TX, Dickens County, TX, Ector County, TX, Fisher County, TX, Floyd County, TX, Foard County, TX, Garza County, TX, Glasscock County, TX, Hale County, TX, Hardeman County, TX, Haskell County, TX, Howard County, TX, Jones County, TX, Kent County, TX, King County, TX, Knox County, TX, Lubbock County, TX, Lynn County, TX, Martin County, TX, Midland County, TX, Mitchell County, TX, Motley County, TX, Nolan County, TX, Reagan County, TX, Runnels County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Stonewall County, TX, Taylor County, TX, Throckmorton County, TX, Upton County, TX, Wilbarger County, TX
The radar
The Lubbock radar (KLBB), 89 km from the middle of the area, began a volume at 22:37 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
- 40%
- One or more EF2 to EF5 tornadoes
- 40%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 60%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 5:40 PM CDT | Severe Thunderstorm Warning | MAF | Howard | 65 min |
| Apr 23, 6:08 PM CDT | Severe Thunderstorm Warning | MAF | Borden | 67 min |
| Apr 23, 6:28 PM CDT | Tornado Warning | MAF | Howard, Mitchell | 47 min |
| Apr 23, 6:51 PM CDT | Severe Thunderstorm Warning | LUB | Garza, Kent | 39 min |
| Apr 23, 6:56 PM CDT | Severe Thunderstorm Warning | MAF | Mitchell, Scurry | 64 min |
| Apr 23, 7:01 PM CDT | Severe Thunderstorm Warning | MAF | Scurry | 30 min |
| Apr 23, 7:07 PM CDT | Tornado Warning | MAF | Mitchell, Scurry | 53 min |
| Apr 23, 7:40 PM CDT | Tornado Warning | SJT | Fisher, Nolan | 50 min |
| Apr 23, 7:58 PM CDT | Tornado Warning | MAF | Mitchell | 17 min |
| Apr 23, 8:14 PM CDT | Severe Thunderstorm Warning | LUB | Garza | 61 min |
| Apr 23, 8:28 PM CDT | Tornado Warning | SJT | Fisher, Nolan | 47 min |
| Apr 23, 8:44 PM CDT | Severe Thunderstorm Warning | LUB | Kent | 61 min |
| Apr 23, 9:06 PM CDT | Tornado Warning | SJT | Fisher, Jones, Nolan, Taylor | 54 min |
| Apr 23, 9:15 PM CDT | Severe Thunderstorm Warning | LUB | Garza | 60 min |
| Apr 23, 9:39 PM CDT | Severe Thunderstorm Warning | LUB | Crosby | 43 min |
| Apr 23, 9:45 PM CDT | Severe Thunderstorm Warning | LUB | Kent | 60 min |
| Apr 23, 9:58 PM CDT | Tornado Warning | SJT | Jones | 32 min |
| Apr 23, 10:06 PM CDT | Tornado Warning | LUB | Kent | 54 min |
| Apr 23, 10:17 PM CDT | Severe Thunderstorm Warning | LUB | Dickens | 58 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
Midland Regional, TX (KMAF), launched 12:00Z, 10.6 hours before the alert went out and 188 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
- 820 J/kg
- Mixed-layer CIN
- -206 J/kg
- Mixed-layer LCL
- 1281 m above ground
- 0-6 km bulk shear
- 49 kt
- 0-1 km storm-relative helicity
- 196 m²/s²
- 0-3 km storm-relative helicity
- 198 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 3.7
The text
As transmitted, in the capitals the NWS used until 2016.
000
WWUS20 KWNS 232238
SEL7
SPC WW 232238
TXZ000-240400-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 167
NWS STORM PREDICTION CENTER NORMAN OK
535 PM CDT MON APR 23 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
WEST CENTRAL INTO NORTHWEST TEXAS
EFFECTIVE THIS MONDAY AFTERNOON AND EVENING FROM 535 PM UNTIL
1100 PM CDT.
TORNADOES...HAIL TO 3 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 80 STATUTE
MILES EAST AND WEST OF A LINE FROM 60 MILES EAST NORTHEAST OF
PLAINVIEW TEXAS TO 75 MILES SOUTHEAST OF BIG SPRING 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.
OTHER WATCH INFORMATION...CONTINUE...WW 165...WW 166...
DISCUSSION...SRN STREAM SHORTWAVE TROUGH NOW MOVING INTO SWRN TX MAY
CONTINUE ENHANCING THUNDERSTORM DEVELOPMENT ALONG AND EAST OF THE
DRY LINE THIS EVENING. DEEP LAYER SHEAR REMAINS QUITE STRONG AND
WILL SUSTAIN SUPERCELLS...WITH INCREASING POTENTIAL FOR A FEW
TORNADOES IF STORMS CAN BE SUSTAINED ENEWD ACROSS WW THIS EVENING.
VERY LARGE HAIL IS ALSO LIKELY WITH THESE STORMS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 3 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 22025.
...EVANSSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 23, 2:02 PM CDT | Mesoscale Discussion | SPC | Armstrong, Briscoe, Carson, Childress, Collingsworth, Cottle and 15 more | 103 min |
| Apr 23, 3:44 PM CDT | Tornado Watch | SPC | Armstrong, Briscoe, Carson, Childress, Collingsworth, Donley and 14 more | 6 hr |
| Apr 23, 5:19 PM CDT | Mesoscale Discussion | SPC | Borden, Coke, Concho, Cottle, Crosby, Dawson and 31 more | 56 min |
| Apr 23, 5:40 PM CDT | Mesoscale Discussion | SPC | Crockett, Dimmit, Edwards, Kerr, Kimble, Kinney and 6 more | 2 hr |
Nearby
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.