Alert archive / Texas / Severe Thunderstorm Watches in 2018
Severe Thunderstorm Watch 25
The Storm Prediction Center issued this severe thunderstorm watch at Apr 3, 2018, 10:26 AM CDT for 8 counties in Arkansas; 5 parishes in Louisiana; 61 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- Apr 3, 2018, 10:26 AM CDT (15:26 UTC)
- Expired
- Apr 3, 2018, 6:00 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 74 counties
Columbia County, AR, Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Nevada County, AR, Sevier County, AR, Bossier Parish, LA, Caddo Parish, LA, De Soto Parish, LA, Sabine Parish, LA, Webster Parish, LA, Anderson County, TX, Angelina County, TX, Bell County, TX, Bosque County, TX, Bowie County, TX, Brazos County, TX, Burleson County, TX, Burnet County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Collin County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Falls County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Grayson County, TX, Gregg County, TX, Hamilton County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Hopkins County, TX, Houston County, TX, Hunt County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Lampasas County, TX, Leon County, TX, Limestone County, TX, Llano County, TX, Madison County, TX, Marion County, TX, McLennan County, TX, Milam County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Panola County, TX, Rains County, TX, Red River County, TX, Robertson County, TX, Rockwall County, TX, Rusk County, TX, Sabine County, TX, San Augustine County, TX, Shelby County, TX, Smith County, TX, Tarrant County, TX, Titus County, TX, Trinity County, TX, Upshur County, TX, Van Zandt County, TX, Williamson County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 112 km from the middle of the area, began a volume at 15:29 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
- 10%
- One or more EF2 to EF5 tornadoes
- 2%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 60%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
26 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 3, 10:44 AM CDT | Severe Thunderstorm Warning | EWX | Burnet, Llano | 31 min |
| Apr 3, 11:03 AM CDT | Severe Thunderstorm Warning | FWD | Lampasas | 42 min |
| Apr 3, 11:13 AM CDT | Severe Thunderstorm Warning | EWX | Burnet | 17 min |
| Apr 3, 11:30 AM CDT | Severe Thunderstorm Warning | FWD | Bell, Coryell | 45 min |
| Apr 3, 12:04 PM CDT | Severe Thunderstorm Warning | FWD | Falls, McLennan | 56 min |
| Apr 3, 12:17 PM CDT | Severe Thunderstorm Warning | FWD | Bell, Coryell, Lampasas | 58 min |
| Apr 3, 12:45 PM CDT | Severe Thunderstorm Warning | FWD | Freestone, Limestone | 45 min |
| Apr 3, 12:59 PM CDT | Severe Thunderstorm Warning | FWD | Bell, Falls | 46 min |
| Apr 3, 2:47 PM CDT | Severe Thunderstorm Warning | FWD | Lamar | 18 min |
| Apr 3, 2:48 PM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Nacogdoches, Rusk, Smith | 57 min |
| Apr 3, 2:49 PM CDT | Severe Thunderstorm Warning | SHV | Bowie, Red River | 41 min |
| Apr 3, 3:21 PM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto | 39 min |
| Apr 3, 3:36 PM CDT | Severe Thunderstorm Warning | SHV | Howard, Sevier | 10 min |
| Apr 3, 3:48 PM CDT | Severe Thunderstorm Warning | SHV | Columbia | 57 min |
| Apr 3, 3:58 PM CDT | Tornado Warning | SHV | Panola, Shelby | 32 min |
| Apr 3, 4:02 PM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto, Red River, Sabine | 58 min |
| Apr 3, 4:04 PM CDT | Severe Thunderstorm Warning | SHV | Sabine | 14 min |
| Apr 3, 4:14 PM CDT | Tornado Warning | SHV | De Soto, Sabine | 6 min |
| Apr 3, 4:30 PM CDT | Severe Thunderstorm Warning | SHV | Natchitoches, Sabine | 45 min |
| Apr 3, 4:31 PM CDT | Severe Thunderstorm Warning | SHV | Columbia, Union | 59 min |
| Apr 3, 4:43 PM CDT | Severe Thunderstorm Warning | EWX | Burnet | 47 min |
| Apr 3, 4:44 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier, Caddo, Caldwell, De Soto, Grant and 7 more | 46 min |
| Apr 3, 5:00 PM CDT | Severe Thunderstorm Warning | SHV | Caddo, De Soto, Red River, Sabine | 30 min |
| Apr 3, 5:14 PM CDT | Severe Thunderstorm Warning | SHV | Grant, Natchitoches, Sabine, Winn | 46 min |
| Apr 3, 5:30 PM CDT | Severe Thunderstorm Warning | SHV | Bienville, Bossier, Caddo, Caldwell, De Soto, Grant and 7 more | 60 min |
| Apr 3, 6:00 PM CDT | Severe Thunderstorm Warning | SHV | Grant, LaSalle, Natchitoches, Sabine, Winn | 60 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, 3.4 hours before the alert went out and 129 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
- 1112 J/kg
- Mixed-layer CIN
- -284 J/kg
- Mixed-layer LCL
- 607 m above ground
- 0-6 km bulk shear
- 51 kt
- 0-1 km storm-relative helicity
- 448 m²/s²
- 0-3 km storm-relative helicity
- 477 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 |
|---|---|---|---|---|
| Apr 3, 12:57 PM CDT | Mesoscale Discussion | SPC | Baxter, Clark, Clay, Cleburne, Conway, Craighead and 39 more | 2 hr |
| Apr 3, 1:33 PM CDT | Tornado Watch | SPC | Arkansas, Baxter, Boone, Bradley, Calhoun, Clark and 51 more | 7 hr |
| Apr 3, 1:55 PM CDT | Mesoscale Discussion | SPC | Little River | 95 min |
| Apr 3, 3:34 PM CDT | Mesoscale Discussion | SPC | Arkansas, Clark, Clay, Cleburne, Cleveland, Conway and 39 more | 86 min |
| Apr 3, 4:33 PM CDT | Mesoscale Discussion | SPC | Ashley, Chicot, Union | 57 min |
| Apr 3, 4:51 PM CDT | Severe Thunderstorm Watch | SPC | Ashley, Chicot, Union | 5 hr |
| Apr 3, 5:19 PM CDT | Mesoscale Discussion | SPC | Beauregard, Vernon | 86 min |
| Apr 3, 5:51 PM CDT | Severe Thunderstorm Watch | SPC | Acadia, Allen, Avoyelles, Beauregard, Calcasieu, Evangeline and 4 more | 6 hr |
| Apr 3, 9:49 AM CDT | Mesoscale Discussion | SPC | Anderson, Angelina, Bell, Brazos, Burleson, Burnet and 40 more | 116 min |
Nearby
Severe Thunderstorm Watches in Texas, 2018Severe Thunderstorm Watches in Arkansas, 2018Severe Thunderstorm Watches in Louisiana, 2018Every severe thunderstorm watch in 2018
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.