Alert archive / Texas / Severe Thunderstorm Watches in 2010
Severe Thunderstorm Watch 13
The Storm Prediction Center issued this severe thunderstorm watch at Jan 28, 2010, 2:39 PM CST for 17 counties in Texas. It was in force for 4 hr.
The area
The outline as issued.
The facts
- Issued
- Jan 28, 2010, 2:39 PM CST (20:39 UTC)
- Expired
- Jan 28, 2010, 7:00 PM CST
- In force
- 4 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 1 in
- Strongest gust expected
- 60 kt
Counties Bosque County, TX, Coryell County, TX, Dallas County, TX, Ellis County, TX, Hamilton County, TX, Hill County, TX, Hood County, TX, Johnson County, TX, Kaufman County, TX, Lampasas County, TX, McLennan County, TX, Mills County, TX, Navarro County, TX, Parker County, TX, Rockwall County, TX, Somervell County, TX, Tarrant County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 42 km from the middle of the area, began a volume at 20:42 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
- 5%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 10%
- One or more hailstones of 2 inches or more
- 5%
- Six or more combined severe hail and wind reports
- 70%
Warnings issued inside it
2 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 28, 2:53 PM CST | Severe Thunderstorm Warning | FWD | Johnson | 67 min |
| Jan 28, 5:54 PM CST | Severe Thunderstorm Warning | FWD | Coryell, Hamilton, Lampasas, Mills | 66 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 69 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
- 2 J/kg
- Mixed-layer CIN
- -175 J/kg
- Mixed-layer LCL
- 535 m above ground
- 0-6 km bulk shear
- 52 kt
- 0-1 km storm-relative helicity
- 91 m²/s²
- 0-3 km storm-relative helicity
- 98 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.0
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jan 28, 12:22 AM CST | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 24 more | 6 hr |
| Jan 28, 5:05 AM CST | Mesoscale Discussion | SPC | Andrews, Borden, Brewster, Coke, Crane, Crockett and 25 more | 2 hr |
| Jan 28, 7:01 AM CST | Mesoscale Discussion | SPC | Armstrong, Bailey, Briscoe, Carson, Castro, Childress and 27 more | 5 hr |
| Jan 28, 9:52 AM CST | Mesoscale Discussion | SPC | Concho, Edwards, Gillespie, Kerr, Kimble, Llano and 9 more | 83 min |
| Jan 28, 10:48 AM CST | Mesoscale Discussion | SPC | Hansford, Lipscomb, Ochiltree, Sherman | 5 hr |
| Jan 28, 1:47 PM CST | Mesoscale Discussion | SPC | Edwards, Kimble, Kinney, Maverick, Menard, Real and 4 more | 118 min |
| Jan 28, 2:36 PM CST | Mesoscale Discussion | SPC | Bosque, Collin, Coryell, Dallas, Delta, Denton and 19 more | 84 min |
| Jan 28, 3:15 PM CST | Tornado Watch | SPC | Bandera, Blanco, Burnet, Concho, Edwards, Gillespie and 14 more | 7 hr |
| Jan 28, 5:06 PM CST | Mesoscale Discussion | SPC | Coryell, Ellis, Falls, Hamilton, Hill, Kaufman and 6 more | 114 min |
Nearby
Severe Thunderstorm Watches in Texas, 2010Every severe thunderstorm watch in 2010
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.