Alert archive / Texas / Severe Thunderstorm Watches in 2004
Severe Thunderstorm Watch 142
The Storm Prediction Center issued this severe thunderstorm watch at May 1, 2004, 5:40 AM CDT for 23 counties in Texas. It was in force for 6 hr.
The area
The outline as issued.
The facts
- Issued
- May 1, 2004, 5:40 AM CDT (10:40 UTC)
- Expired
- May 1, 2004, 12:00 PM CDT
- In force
- 6 hr
- Issued by
- the Storm Prediction Center
All 23 counties
Atascosa County, TX, Bee County, TX, Bexar County, TX, Caldwell County, TX, DeWitt County, TX, Dimmit County, TX, Duval County, TX, Frio County, TX, Goliad County, TX, Gonzales County, TX, Guadalupe County, TX, Jim Wells County, TX, Karnes County, TX, La Salle County, TX, Live Oak County, TX, McMullen County, TX, Medina County, TX, Nueces County, TX, Refugio County, TX, San Patricio County, TX, Webb County, TX, Wilson County, TX, Zavala County, TX
The radar
The Austin/San Antonio radar (KEWX), 143 km from the middle of the area, began a volume at 10:39 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.
Warnings issued inside it
1 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 1, 10:16 AM CDT | Flash Flood Warning | CRP | Nueces | 3 hr |
Discussions around it
SPC mesoscale discussions over the same counties from four hours before the watch to its end.
The nearest sounding before it
Del Rio, TX (KDRT), launched 00:00Z, 10.7 hours before the alert went out and 215 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
- 2640 J/kg
- Mixed-layer CIN
- -51 J/kg
- Mixed-layer LCL
- 1240 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 4 m²/s²
- 0-3 km storm-relative helicity
- 41 m²/s²
- Significant tornado parameter
- 0.1
- Supercell composite
- 0.8
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Apr 30, 7:00 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Coleman, Comanche, Concho, Eastland and 11 more | 90 min |
| Apr 30, 7:22 PM CDT | Mesoscale Discussion | SPC | Anderson, Bowie, Camp, Cass, Cherokee, Delta and 25 more | 83 min |
| Apr 30, 7:40 PM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bowie, Camp, Delta, Ellis, Fannin and 20 more | 5 hr |
| Apr 30, 8:14 PM CDT | Mesoscale Discussion | SPC | Archer, Clay, Collin, Cooke, Denton, Grayson and 8 more | 91 min |
| Apr 30, 9:07 PM CDT | Mesoscale Discussion | SPC | Bosque, Brown, Comanche, Coryell, Erath, Hamilton and 8 more | 53 min |
| Apr 30, 9:54 PM CDT | Mesoscale Discussion | SPC | Anderson, Bowie, Camp, Delta, Ellis, Franklin and 19 more | 96 min |
| Apr 30, 10:34 PM CDT | Mesoscale Discussion | SPC | Brown, Coleman, Concho, Crockett, Edwards, Irion and 15 more | 86 min |
| Apr 30, 11:35 PM CDT | Severe Thunderstorm Watch | SPC | Blanco, Concho, Crockett, Edwards, Gillespie, Irion and 13 more | 5 hr |
| Apr 30, 11:56 PM CDT | Mesoscale Discussion | SPC | Chambers, Galveston, Grimes, Hardin, Harris, Jasper and 10 more | 94 min |
| May 1, 12:50 AM CDT | Severe Thunderstorm Watch | SPC | Anderson, Bell, Bosque, Bowie, Camp, Cass and 47 more | 6 hr |
| May 1, 1:34 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Comal, Concho and 24 more | 86 min |
| May 1, 1:49 AM CDT | Mesoscale Discussion | SPC | Anderson, Bell, Cherokee, Falls, Freestone, Henderson and 5 more | 86 min |
| May 1, 2:38 AM CDT | Mesoscale Discussion | SPC | Angelina, Sabine, San Augustine, Shelby | 37 min |
| May 1, 3:10 AM CDT | Severe Thunderstorm Watch | SPC | Angelina, Sabine, San Augustine, Shelby | 6 hr |
| May 1, 3:28 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bandera, Bexar, Blanco, Concho, Crockett and 23 more | 92 min |
| May 1, 3:41 AM CDT | Mesoscale Discussion | SPC | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 18 more | 64 min |
| May 1, 3:50 AM CDT | Tornado Watch | SPC | Angelina, Austin, Bastrop, Brazos, Burleson, Chambers and 25 more | 6 hr |
| May 1, 5:13 AM CDT | Mesoscale Discussion | SPC | Anderson, Cherokee, Harrison, Nacogdoches, Panola, Rusk and 1 more | 92 min |
| May 1, 6:08 AM CDT | Mesoscale Discussion | SPC | Angelina, Austin, Brazos, Burleson, Chambers, Colorado and 24 more | 97 min |
| May 1, 7:24 AM CDT | Mesoscale Discussion | SPC | Sabine, San Augustine, Shelby | 96 min |
| May 1, 7:33 AM CDT | Mesoscale Discussion | SPC | Atascosa, Bee, Bexar, Caldwell, DeWitt, Dimmit and 16 more | 87 min |
| May 1, 7:47 AM CDT | Mesoscale Discussion | SPC | Austin, Bastrop, Brazos, Burleson, Chambers, Colorado and 23 more | 88 min |
| May 1, 9:16 AM CDT | Mesoscale Discussion | SPC | Brazoria, Chambers, Fort Bend, Galveston, Hardin, Harris and 3 more | 59 min |
| May 1, 9:36 AM CDT | Mesoscale Discussion | SPC | Nueces | 114 min |
| May 1, 9:45 AM CDT | Tornado Watch | SPC | Brazoria, Chambers, Fort Bend, Galveston, Hardin, Harris and 6 more | 5 hr |
| May 1, 9:55 AM CDT | Severe Thunderstorm Watch | SPC | Brooks, Cameron, Hidalgo, Jim Hogg, Kenedy, Kleberg and 3 more | 5 hr |
| May 1, 11:15 AM CDT | Mesoscale Discussion | SPC | Kenedy | 2 hr |
| May 1, 1:14 PM CDT | Mesoscale Discussion | SPC | Willacy | 2 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2004Every severe thunderstorm watch in 2004
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.