Alert archive / Texas / Tornado Watches in 2006
Tornado Watch 869
The Storm Prediction Center issued this tornado watch at Nov 29, 2006, 12:28 PM CST for Crawford County, Sebastian County, Washington County, Arkansas; 23 counties in Oklahoma; 24 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Nov 29, 2006, 12:28 PM CST (18:28 UTC)
- Expired
- Nov 29, 2006, 7:00 PM CST
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 50 counties
Crawford County, AR, Sebastian County, AR, Washington County, AR, Adair County, OK, Atoka County, OK, Bryan County, OK, Carter County, OK, Cherokee County, OK, Choctaw County, OK, Coal County, OK, Haskell County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, LeFlore County, OK, Love County, OK, Marshall County, OK, McIntosh County, OK, Murray County, OK, Muskogee County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Seminole County, OK, Sequoyah County, OK, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Grayson County, TX, Hood County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Montague County, TX, Palo Pinto County, TX, Parker County, TX, Rockwall County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Wise County, TX, Young County, TX
The radar
The Norman radar (KTLX), 133 km from the middle of the area, began a volume at 18:30 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
- 30%
- One or more gusts of 65 knots or more
- 20%
- 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
- 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 |
|---|---|---|---|---|
| Nov 29, 1:04 PM CST | Severe Thunderstorm Warning | FWD | Cooke, Montague | 56 min |
| Nov 29, 2:10 PM CST | Severe Thunderstorm Warning | FWD | Cooke | 35 min |
| Nov 29, 2:32 PM CST | Severe Thunderstorm Warning | FWD | Wise | 43 min |
| Nov 29, 2:51 PM CST | Severe Thunderstorm Warning | FWD | Jack | 24 min |
| Nov 29, 3:15 PM CST | Severe Thunderstorm Warning | FWD | Jack | 30 min |
| Nov 29, 4:40 PM CST | Severe Thunderstorm Warning | FWD | Eastland | 49 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 Sill, OK (KFSI), launched 12:00Z, 6.5 hours before the alert went out and 193 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
- 259 J/kg
- Mixed-layer CIN
- -174 J/kg
- Mixed-layer LCL
- 868 m above ground
- 0-6 km bulk shear
- 63 kt
- 0-1 km storm-relative helicity
- 323 m²/s²
- 0-3 km storm-relative helicity
- 310 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.5
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Nov 29, 10:55 AM CST | Mesoscale Discussion | SPC | Benton, Crawford, Franklin, Madison, Sebastian, Washington | 65 min |
| Nov 29, 3:05 PM CST | Mesoscale Discussion | SPC | Crawford, Sebastian | 85 min |
| Nov 28, 9:57 PM CST | Mesoscale Discussion | SPC | Craig, Nowata, Osage, Ottawa, Rogers, Washington | 2 hr |
Nearby
Tornado Watches in Texas, 2006Tornado Watches in Oklahoma, 2006Tornado Watches in Arkansas, 2006Every tornado watch in 2006
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.