Alert archive / Texas / Tornado Watches in 2010
Tornado Watch 286
The Storm Prediction Center issued this tornado watch at Jun 9, 2010, 8:46 AM CDT for 36 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 9, 2010, 8:46 AM CDT (13:46 UTC)
- Expired
- Jun 9, 2010, 4:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 0.5 in
- Strongest gust expected
- 60 kt
All 36 counties
Anderson County, TX, Angelina County, TX, Austin County, TX, Brazos County, TX, Cherokee County, TX, Colorado County, TX, DeWitt County, TX, Fayette County, TX, Gonzales County, TX, Grimes County, TX, Guadalupe County, TX, Hardin County, TX, Harris County, TX, Henderson County, TX, Houston County, TX, Jasper County, TX, Karnes County, TX, Lavaca County, TX, Liberty County, TX, Madison County, TX, Montgomery County, TX, Nacogdoches County, TX, Newton County, TX, Panola County, TX, Polk County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, San Jacinto County, TX, Shelby County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Waller County, TX, Washington County, TX, Wilson County, TX
The radar
The Ft Hood radar (KGRK), 101 km from the middle of the area, began a volume at 13:48 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
- 10%
- Ten or more severe wind reports
- 30%
- One or more gusts of 65 knots or more
- 5%
- 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
- 50%
Warnings issued inside it
12 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 9, 8:58 AM CDT | Flash Flood Warning | HGX | Brazos, Burleson, Grimes, Washington | 2 hr |
| Jun 9, 9:21 AM CDT | Severe Thunderstorm Warning | EWX | Fayette, Gonzales, Lavaca | 54 min |
| Jun 9, 10:14 AM CDT | Severe Thunderstorm Warning | EWX | Fayette | 61 min |
| Jun 9, 10:40 AM CDT | Severe Thunderstorm Warning | HGX | Austin, Colorado, Washington | 65 min |
| Jun 9, 10:57 AM CDT | Flash Flood Warning | HGX | Brazos, Burleson, Grimes, Madison, Washington | 3 hr |
| Jun 9, 11:30 AM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Gregg, Harrison, Rusk, Smith, Upshur | 60 min |
| Jun 9, 11:49 AM CDT | Severe Thunderstorm Warning | SHV | Gregg, Harrison, Panola, Rusk | 56 min |
| Jun 9, 12:40 PM CDT | Severe Thunderstorm Warning | HGX | Grimes, Montgomery, Walker | 50 min |
| Jun 9, 12:46 PM CDT | Tornado Warning | HGX | Montgomery | 29 min |
| Jun 9, 12:46 PM CDT | Severe Thunderstorm Warning | SHV | Harrison, Panola, Shelby | 59 min |
| Jun 9, 1:54 PM CDT | Flash Flood Warning | HGX | Brazos, Burleson, Grimes, Madison, Washington | 111 min |
| Jun 9, 2:50 PM CDT | Severe Thunderstorm Warning | HGX | Liberty, Polk, San Jacinto | 40 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
Corpus Christi, TX (KCRP), launched 12:00Z, 1.8 hours before the alert went out and 303 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
- 3517 J/kg
- Mixed-layer CIN
- -5 J/kg
- Mixed-layer LCL
- 535 m above ground
- 0-6 km bulk shear
- 24 kt
- 0-1 km storm-relative helicity
- 77 m²/s²
- 0-3 km storm-relative helicity
- 175 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 9.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 8, 11:53 PM CDT | Mesoscale Discussion | SPC | Atascosa, Comal | 3 hr |
| Jun 9, 7:31 AM CDT | Mesoscale Discussion | SPC | Austin, Brazoria, Brazos, Chambers, Colorado, Fort Bend and 21 more | 59 min |
| Jun 9, 11:15 AM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Brazos, Burleson, Camp, Cherokee and 31 more | 90 min |
| Jun 9, 1:07 PM CDT | Tornado Watch | SPC | Bowie, Cass, Harrison, Marion, Morris, Red River and 3 more | 6 hr |
| Jun 9, 2:29 PM CDT | Mesoscale Discussion | SPC | Angelina, Hardin, Jasper, Liberty, Newton, Orange and 4 more | 91 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.