Alert archive / Texas / Tornado Watches in 2023
Tornado Watch 170
The Storm Prediction Center issued this tornado watch at Apr 26, 2023, 7:03 PM CDT for 7 parishes in Louisiana; 27 counties in Texas. It was in force for 5 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 26, 2023, 7:03 PM CDT (00:03 UTC)
- Expired
- Apr 27, 2023, 12:03 AM CDT
- In force
- 5 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 70 kt
All 34 counties
De Soto Parish, LA, Grant Parish, LA, Natchitoches Parish, LA, Rapides Parish, LA, Red River Parish, LA, Sabine Parish, LA, Vernon Parish, LA, Angelina County, TX, Bastrop County, TX, Blanco County, TX, Brazos County, TX, Burleson County, TX, Cherokee County, TX, Grimes County, TX, Hays County, TX, Houston County, TX, Jasper County, TX, Lee 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, Travis County, TX, Trinity County, TX, Tyler County, TX, Walker County, TX, Washington County, TX
The radar
The Ft Hood radar (KGRK), 149 km from the middle of the area, began a volume at 00:03 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 60%
- One or more gusts of 65 knots or more
- 40%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 60%
- Six or more combined severe hail and wind reports
- 95%
Warnings issued inside it
19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 7:20 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 40 min |
| Apr 26, 7:42 PM CDT | Severe Thunderstorm Warning | EWX | Hays, Travis | 20 min |
| Apr 26, 8:33 PM CDT | Severe Thunderstorm Warning | HGX | Houston | 27 min |
| Apr 26, 8:58 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Trinity | 47 min |
| Apr 26, 9:44 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Trinity | 46 min |
| Apr 26, 9:47 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Trinity, Walker | 28 min |
| Apr 26, 10:14 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Madison, Polk, San Jacinto, Trinity, Walker | 46 min |
| Apr 26, 10:25 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Cherokee, Nacogdoches | 50 min |
| Apr 26, 10:28 PM CDT | Severe Thunderstorm Warning | HGX | Houston, Polk, Trinity | 32 min |
| Apr 26, 10:33 PM CDT | Severe Thunderstorm Warning | EWX | Burnet, Travis, Williamson | 43 min |
| Apr 26, 10:48 PM CDT | Severe Thunderstorm Warning | SHV | Angelina | 27 min |
| Apr 26, 10:55 PM CDT | Severe Thunderstorm Warning | HGX | Polk, San Jacinto, Trinity | 35 min |
| Apr 26, 11:12 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Nacogdoches, San Augustine | 48 min |
| Apr 26, 11:16 PM CDT | Severe Thunderstorm Warning | HGX | Polk | 29 min |
| Apr 26, 11:18 PM CDT | Severe Thunderstorm Warning | LCH | Hardin, Jasper, Tyler | 42 min |
| Apr 26, 11:29 PM CDT | Severe Thunderstorm Warning | HGX | Polk | 31 min |
| Apr 26, 11:30 PM CDT | Severe Thunderstorm Warning | LCH | Jasper, Tyler | 45 min |
| Apr 26, 11:52 PM CDT | Severe Thunderstorm Warning | LCH | Hardin, Jasper, Tyler | 38 min |
| Apr 26, 11:54 PM CDT | Severe Thunderstorm Warning | SHV | Angelina, Nacogdoches, Sabine, San Augustine | 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 00:00Z, 0.1 hours before the alert went out and 262 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
- 35 J/kg
- Mixed-layer CIN
- -205 J/kg
- Mixed-layer LCL
- 534 m above ground
- 0-6 km bulk shear
- 43 kt
- 0-1 km storm-relative helicity
- 149 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 1.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 26, 10:43 PM CDT | Mesoscale Discussion | SPC | Vernon | 2 hr |
| Apr 26, 11:40 PM CDT | Severe Thunderstorm Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Cameron and 10 more | 5 hr |
| Apr 27, 2:10 AM CDT | Mesoscale Discussion | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, East Baton Rouge and 13 more | 95 min |
| Apr 27, 5:43 AM CDT | Severe Thunderstorm Watch | SPC | Saint Tammany, Washington | 8 hr |
| Apr 26, 8:36 PM CDT | Mesoscale Discussion | SPC | Brazos, Leon, Madison, Robertson, Trinity, Walker | 114 min |
| Apr 26, 9:52 PM CDT | Severe Thunderstorm Watch | SPC | Bastrop, Blanco, Burnet, Caldwell, Gillespie, Hays and 4 more | 3 hr |
| Apr 27, 9:11 AM CDT | Mesoscale Discussion | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 6 more | 94 min |
Nearby
Tornado Watches in Texas, 2023Tornado Watches in Louisiana, 2023Every tornado watch in 2023
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.