Alert archive / Texas / Tornado Watches in 2007
Tornado Watch 211
The Storm Prediction Center issued this tornado watch at May 2, 2007, 3:43 PM CDT for 39 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 2, 2007, 3:43 PM CDT (20:43 UTC)
- Expired
- May 2, 2007, 10:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 70 kt
All 39 counties
Anderson County, TX, Bell County, TX, Bosque County, TX, Collin County, TX, Comanche County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Fannin County, TX, Freestone County, TX, Grayson County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Leon County, TX, Limestone County, TX, McLennan County, TX, Milam County, TX, Navarro County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Robertson County, TX, Rockwall County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Van Zandt County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 55 km from the middle of the area, began a volume at 20:46 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
- 20%
- Ten or more severe wind reports
- 70%
- One or more gusts of 65 knots or more
- 50%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
35 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 2, 3:50 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Eastland | 55 min |
| May 2, 4:13 PM CDT | Severe Thunderstorm Warning | FWD | Erath | 62 min |
| May 2, 4:39 PM CDT | Severe Thunderstorm Warning | FWD | Comanche, Hamilton | 66 min |
| May 2, 5:08 PM CDT | Severe Thunderstorm Warning | FWD | Bosque, Hood, Somervell | 82 min |
| May 2, 5:13 PM CDT | Severe Thunderstorm Warning | FWD | Erath | 21 min |
| May 2, 5:19 PM CDT | Tornado Warning | FWD | Johnson | 26 min |
| May 2, 5:29 PM CDT | Severe Thunderstorm Warning | FWD | Hill | 76 min |
| May 2, 5:44 PM CDT | Severe Thunderstorm Warning | FWD | Johnson | 61 min |
| May 2, 5:45 PM CDT | Tornado Warning | FWD | Tarrant | 40 min |
| May 2, 5:53 PM CDT | Severe Thunderstorm Warning | FWD | Parker, Wise | 57 min |
| May 2, 5:53 PM CDT | Severe Thunderstorm Warning | FWD | McLennan | 67 min |
| May 2, 6:01 PM CDT | Severe Thunderstorm Warning | FWD | Tarrant | 59 min |
| May 2, 6:09 PM CDT | Severe Thunderstorm Warning | FWD | Ellis, Navarro | 81 min |
| May 2, 6:20 PM CDT | Severe Thunderstorm Warning | FWD | Dallas | 70 min |
| May 2, 6:29 PM CDT | Severe Thunderstorm Warning | FWD | Limestone | 76 min |
| May 2, 6:30 PM CDT | Flash Flood Warning | FWD | Johnson, Tarrant | 3 hr |
| May 2, 6:42 PM CDT | Severe Thunderstorm Warning | FWD | Johnson | 21 min |
| May 2, 6:44 PM CDT | Flash Flood Warning | FWD | Dallas | 4 hr |
| May 2, 6:47 PM CDT | Severe Thunderstorm Warning | FWD | Henderson, Kaufman, Rockwall | 73 min |
| May 2, 6:53 PM CDT | Severe Thunderstorm Warning | FWD | Freestone | 97 min |
| May 2, 6:57 PM CDT | Severe Thunderstorm Warning | FWD | Tarrant | 25 min |
| May 2, 7:02 PM CDT | Flash Flood Warning | FWD | McLennan | 4 hr |
| May 2, 7:06 PM CDT | Severe Thunderstorm Warning | FWD | Collin | 69 min |
| May 2, 7:09 PM CDT | Severe Thunderstorm Warning | FWD | Denton | 41 min |
| May 2, 7:14 PM CDT | Severe Thunderstorm Warning | FWD | Delta, Hopkins, Hunt, Rains, Van Zandt | 91 min |
| May 2, 7:23 PM CDT | Flash Flood Warning | FWD | Collin, Denton | 4 hr |
| May 2, 7:25 PM CDT | Severe Thunderstorm Warning | FWD | Dallas, Ellis, Navarro | 50 min |
| May 2, 7:31 PM CDT | Severe Thunderstorm Warning | FWD | Anderson | 74 min |
| May 2, 7:46 PM CDT | Severe Thunderstorm Warning | FWD | Fannin, Lamar | 89 min |
| May 2, 7:48 PM CDT | Severe Thunderstorm Warning | FWD | Bell, Coryell, Lampasas | 57 min |
| May 2, 7:55 PM CDT | Severe Thunderstorm Warning | FWD | Kaufman, Rockwall | 50 min |
| May 2, 7:57 PM CDT | Severe Thunderstorm Warning | FWD | Henderson | 63 min |
| May 2, 8:11 PM CDT | Severe Thunderstorm Warning | FWD | Collin, Grayson | 39 min |
| May 2, 8:37 PM CDT | Severe Thunderstorm Warning | FWD | Milam | 53 min |
| May 2, 8:42 PM CDT | Severe Thunderstorm Warning | FWD | Delta, Hopkins, Hunt, Rains, Van Zandt | 63 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
Fort Worth, TX (KFWD), launched 12:00Z, 8.7 hours before the alert went out and 83 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
- 657 J/kg
- Mixed-layer CIN
- -47 J/kg
- Mixed-layer LCL
- 662 m above ground
- 0-6 km bulk shear
- 20 kt
- 0-1 km storm-relative helicity
- 49 m²/s²
- 0-3 km storm-relative helicity
- 73 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 022042
SEL1
SPC WW 022042
TXZ000-030300-
URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 211
NWS STORM PREDICTION CENTER NORMAN OK
345 PM CDT WED MAY 2 2007
THE NWS STORM PREDICTION CENTER HAS ISSUED A
TORNADO WATCH FOR PORTIONS OF
PARTS OF NORTH CENTRAL AND CENTRAL TEXAS
EFFECTIVE THIS WEDNESDAY AFTERNOON AND EVENING FROM 345 PM UNTIL
1000 PM CDT.
TORNADOES...HAIL TO 2.5 INCHES IN DIAMETER...THUNDERSTORM WIND
GUSTS TO 80 MPH...AND DANGEROUS LIGHTNING ARE POSSIBLE IN THESE
AREAS.
THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 80 STATUTE
MILES EITHER SIDE OF A LINE FROM 45 MILES SOUTHWEST OF
STEPHENVILLE TEXAS TO 55 MILES EAST OF CORSICANA TEXAS. FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU1).
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 209...WW 210...
DISCUSSION...SEVERE SQUALL LINE WITH EMBEDDED SUPERCELLS MOVING
RAPIDLY EWD ACROSS NWRN TX. WHILE PRIMARY THREAT WITH SQUALL LINE
WILL BE DAMAGING WINDS...POTENTIAL FOR TORNADOES ASSOCIATED WITH
SUPERCELLS GIVEN THE VERY UNSTABLE AIRMASS AND LOW LCLS.
AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2.5 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 70 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
550. MEAN STORM MOTION VECTOR 27035.
...HALESSPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 7:08 PM CDT | Mesoscale Discussion | SPC | Austin, Bandera, Bastrop, Bexar, Blanco, Brazos and 29 more | 97 min |
| May 2, 7:19 AM CDT | Mesoscale Discussion | SPC | Andrews, Dawson, Ector, Gaines, Loving, Martin and 4 more | 2 hr |
| May 2, 7:40 AM CDT | Mesoscale Discussion | SPC | Crane, Crockett, Ector, Loving, Midland, Pecos and 7 more | 2 hr |
| May 2, 8:02 AM CDT | Severe Thunderstorm Watch | SPC | Andrews, Borden, Coke, Crane, Crockett, Dawson and 20 more | 6 hr |
| May 2, 10:11 AM CDT | Mesoscale Discussion | SPC | Brewster, Crane, Crockett, Glasscock, Howard, Irion and 7 more | 94 min |
| May 2, 12:07 PM CDT | Mesoscale Discussion | SPC | Culberson, Hudspeth, Jeff Davis, Loving, Reeves | 113 min |
| May 2, 12:39 PM CDT | Mesoscale Discussion | SPC | Bandera, Brown, Callahan, Coke, Coleman, Comanche and 29 more | 66 min |
| May 2, 12:50 PM CDT | Tornado Watch | SPC | Bandera, Brown, Burnet, Callahan, Coke, Coleman and 31 more | 6 hr |
| May 2, 1:53 PM CDT | Severe Thunderstorm Watch | SPC | Andrews, Crane, Culberson, Dawson, Ector, Gaines and 14 more | 7 hr |
| May 2, 2:38 PM CDT | Mesoscale Discussion | SPC | Bosque, Coryell, Dallas, Denton, Ellis, Erath and 16 more | 2 hr |
| May 2, 3:08 PM CDT | Mesoscale Discussion | SPC | Dimmit, Frio, Kinney, Maverick, Uvalde, Val Verde and 1 more | 97 min |
| May 2, 5:08 PM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burleson and 20 more | 67 min |
| May 2, 5:53 PM CDT | Tornado Watch | SPC | Atascosa, Bandera, Bastrop, Bexar, Blanco, Burnet and 27 more | 7 hr |
| May 2, 6:05 PM CDT | Mesoscale Discussion | SPC | Andrews, Brewster, Cochran, Coke, Crane, Culberson and 22 more | 85 min |
| May 2, 6:52 PM CDT | Tornado Watch | SPC | Brewster, Crockett, Jeff Davis, Pecos, Presidio, Terrell | 3 hr |
| May 2, 6:54 PM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Bosque, Brazos, Burnet, Camp and 54 more | 81 min |
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.