Alert archive / Texas / Tornado Watches in 2014
Tornado Watch 531
The Storm Prediction Center issued this tornado watch at Oct 12, 2014, 11:08 PM CDT for 35 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Oct 12, 2014, 11:08 PM CDT (04:08 UTC)
- Expired
- Oct 13, 2014, 5:49 AM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 35 counties
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, Fannin County, TX, Grayson County, TX, Hamilton County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, McLennan County, TX, Mills County, TX, Montague County, TX, Navarro County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX, Van Zandt County, TX, Wise County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 39 km from the middle of the area, began a volume at 04:08 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
- 50%
- One or more gusts of 65 knots or more
- 10%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
13 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 11:58 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Palo Pinto, Stephens, Young | 62 min |
| Oct 13, 12:06 AM CDT | Severe Thunderstorm Warning | FWD | Montague, Wise | 54 min |
| Oct 13, 12:36 AM CDT | Severe Thunderstorm Warning | FWD | Parker, Wise | 54 min |
| Oct 13, 12:39 AM CDT | Severe Thunderstorm Warning | FWD | Cooke | 66 min |
| Oct 13, 12:54 AM CDT | Severe Thunderstorm Warning | FWD | Wise | 36 min |
| Oct 13, 1:05 AM CDT | Severe Thunderstorm Warning | FWD | Denton, Tarrant | 55 min |
| Oct 13, 1:11 AM CDT | Severe Thunderstorm Warning | FWD | Lampasas | 64 min |
| Oct 13, 1:47 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Dallas, Denton, Grayson, Tarrant | 58 min |
| Oct 13, 2:38 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Dallas, Hunt, Kaufman, Rockwall | 67 min |
| Oct 13, 2:42 AM CDT | Severe Thunderstorm Warning | FWD | Hill, Limestone, McLennan | 63 min |
| Oct 13, 2:49 AM CDT | Severe Thunderstorm Warning | FWD | Delta, Fannin, Hunt, Lamar | 56 min |
| Oct 13, 2:59 AM CDT | Flash Flood Warning | FWD | McLennan | 3 hr |
| Oct 13, 3:59 AM CDT | Severe Thunderstorm Warning | FWD | Anderson, Freestone, Navarro | 31 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 00:00Z, 4.1 hours before the alert went out and 19 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
- 17 J/kg
- Mixed-layer CIN
- -404 J/kg
- Mixed-layer LCL
- 641 m above ground
- 0-6 km bulk shear
- 46 kt
- 0-1 km storm-relative helicity
- 228 m²/s²
- 0-3 km storm-relative helicity
- 253 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
The text
As transmitted, in the capitals the NWS used until 2016.
165 WWUS20 KWNS 130409 SEL1 SPC WW 130409 TXZ000-131200- URGENT - IMMEDIATE BROADCAST REQUESTED TORNADO WATCH NUMBER 531 NWS STORM PREDICTION CENTER NORMAN OK 1110 PM CDT SUN OCT 12 2014 THE NWS STORM PREDICTION CENTER HAS ISSUED A * TORNADO WATCH FOR PORTIONS OF NORTH-CENTRAL AND NORTHEAST INTO CENTRAL TEXAS * EFFECTIVE THIS SUNDAY NIGHT AND MONDAY MORNING FROM 1110 PM UNTIL 700 AM CDT. * PRIMARY THREATS INCLUDE... A COUPLE TORNADOES POSSIBLE SCATTERED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 90 STATUTE MILES EAST AND WEST OF A LINE FROM 20 MILES NORTHWEST OF SHERMAN TEXAS TO 25 MILES SOUTHWEST OF WACO TEXAS. FOR A COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS WOU1). PRECAUTIONARY/PREPAREDNESS ACTIONS... 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 529...WW 530... DISCUSSION...THUNDERSTORMS ARE EXPECTED TO INCREASE IN COVERAGE AND INTENSITY TONIGHT ALONG AND AHEAD OF A COLD FRONT ADVANCING SEWD ACROSS THE REGION. THE COMBINATION OF STRONG LOW-LEVEL AND DEEP-LAYER SHEAR AND A MOISTENING/DESTABILIZING AIR MASS WILL BE SUPPORTIVE OF SUPERCELLS AND BOWING LINE SEGMENTS CAPABLE OF A COUPLE TORNADOES...DAMAGING STRAIGHT LINE WINDS AND LARGE HAIL. 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 24035. ...MEAD
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Oct 12, 7:45 PM CDT | Severe Thunderstorm Watch | SPC | Archer, Baylor, Borden, Brown, Callahan, Clay and 31 more | 7 hr |
| Oct 12, 9:47 PM CDT | Mesoscale Discussion | SPC | Archer, Baylor, Clay, Fisher, Foard, Haskell and 10 more | 58 min |
| Oct 12, 10:17 PM CDT | Mesoscale Discussion | SPC | Collin, Cooke, Dallas, Delta, Denton, Ellis and 20 more | 58 min |
| Oct 13, 1:59 AM CDT | Mesoscale Discussion | SPC | Brown, Callahan, Coke, Coleman, Comanche, Concho and 17 more | 91 min |
| Oct 13, 2:43 AM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Bosque, Bowie, Camp, Cass and 50 more | 92 min |
| Oct 13, 3:22 AM CDT | Tornado Watch | SPC | Anderson, Angelina, Bell, Bowie, Brazos, Burleson and 31 more | 8 hr |
| Oct 13, 6:34 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Bell, Brazos, Burleson, Cherokee and 25 more | 86 min |
| Oct 13, 7:08 AM CDT | Tornado Watch | SPC | Sabine | 7 hr |
| Oct 13, 10:20 AM CDT | Mesoscale Discussion | SPC | Sabine | 115 min |
| Oct 13, 11:10 AM CDT | Tornado Watch | SPC | Chambers, Hardin, Jasper, Jefferson, Liberty, Newton and 2 more | 8 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.