Alert archive / Texas / Severe Thunderstorm Watches in 2013
Severe Thunderstorm Watch 70
The Storm Prediction Center issued this severe thunderstorm watch at Mar 31, 2013, 5:10 AM CDT for 6 counties in Arkansas; 19 counties in Oklahoma; 50 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- Mar 31, 2013, 5:10 AM CDT (10:10 UTC)
- Expired
- Mar 31, 2013, 12:00 PM CDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 75 counties
Hempstead County, AR, Howard County, AR, Lafayette County, AR, Little River County, AR, Miller County, AR, Sevier County, AR, Atoka County, OK, Bryan County, OK, Carter County, OK, Choctaw County, OK, Coal County, OK, Cotton County, OK, Garvin County, OK, Hughes County, OK, Jefferson County, OK, Johnston County, OK, Latimer County, OK, Love County, OK, Marshall County, OK, McCurtain County, OK, Murray County, OK, Pittsburg County, OK, Pontotoc County, OK, Pushmataha County, OK, Stephens County, OK, Anderson County, TX, Bosque County, TX, Bowie County, TX, Camp County, TX, Cass County, TX, Cherokee County, TX, Clay County, TX, Collin County, TX, Cooke County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Ellis County, TX, Erath County, TX, Fannin County, TX, Franklin County, TX, Freestone County, TX, Grayson County, TX, Gregg County, TX, Harrison County, TX, Henderson County, TX, Hill County, TX, Hood County, TX, Hopkins County, TX, Hunt County, TX, Jack County, TX, Johnson County, TX, Kaufman County, TX, Lamar County, TX, Marion County, TX, Montague County, TX, Morris County, TX, Nacogdoches County, TX, Navarro County, TX, Palo Pinto County, TX, Panola County, TX, Parker County, TX, Rains County, TX, Red River County, TX, Rockwall County, TX, Rusk County, TX, Shelby County, TX, Smith County, TX, Somervell County, TX, Tarrant County, TX, Titus County, TX, Upshur County, TX, Van Zandt County, TX, Wise County, TX, Wood County, TX
The radar
The Dallas/Ft Worth radar (KFWS), 127 km from the middle of the area, began a volume at 10:14 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
- 20%
- One or more EF2 to EF5 tornadoes
- 5%
- Ten or more severe wind reports
- 40%
- One or more gusts of 65 knots or more
- 20%
- Ten or more severe hail reports
- 30%
- One or more hailstones of 2 inches or more
- 20%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
29 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 31, 5:14 AM CDT | Severe Thunderstorm Warning | OUN | Coal, Garvin, Pontotoc | 46 min |
| Mar 31, 5:16 AM CDT | Severe Thunderstorm Warning | OUN | Garvin, Johnston, Murray | 29 min |
| Mar 31, 5:38 AM CDT | Severe Thunderstorm Warning | OUN | Johnston, Murray | 37 min |
| Mar 31, 5:55 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Coal, Johnston, Pontotoc | 50 min |
| Mar 31, 6:02 AM CDT | Severe Thunderstorm Warning | OUN | Bryan, Carter, Johnston, Love, Marshall | 58 min |
| Mar 31, 6:08 AM CDT | Severe Thunderstorm Warning | OUN | Atoka, Bryan | 52 min |
| Mar 31, 6:48 AM CDT | Severe Thunderstorm Warning | FWD | Cooke, Grayson | 42 min |
| Mar 31, 7:01 AM CDT | Severe Thunderstorm Warning | TSA | Choctaw | 59 min |
| Mar 31, 7:09 AM CDT | Severe Thunderstorm Warning | FWD | Fannin | 66 min |
| Mar 31, 7:13 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Denton | 62 min |
| Mar 31, 7:29 AM CDT | Severe Thunderstorm Warning | FWD | Grayson | 31 min |
| Mar 31, 7:32 AM CDT | Severe Thunderstorm Warning | SHV | McCurtain | 43 min |
| Mar 31, 7:34 AM CDT | Severe Thunderstorm Warning | FWD | Lamar | 56 min |
| Mar 31, 7:53 AM CDT | Severe Thunderstorm Warning | FWD | Hunt | 67 min |
| Mar 31, 8:08 AM CDT | Severe Thunderstorm Warning | FWD | Collin, Dallas, Rockwall | 67 min |
| Mar 31, 8:16 AM CDT | Severe Thunderstorm Warning | FWD | Delta, Hopkins | 59 min |
| Mar 31, 8:19 AM CDT | Severe Thunderstorm Warning | SHV | Little River | 41 min |
| Mar 31, 8:28 AM CDT | Severe Thunderstorm Warning | FWD | Hunt, Kaufman | 62 min |
| Mar 31, 8:44 AM CDT | Severe Thunderstorm Warning | FWD | Rains, Van Zandt | 61 min |
| Mar 31, 8:49 AM CDT | Severe Thunderstorm Warning | SHV | Bowie, Camp, Cass, Franklin, Morris, Red River and 1 more | 41 min |
| Mar 31, 9:13 AM CDT | Severe Thunderstorm Warning | SHV | Camp, Cass, Harrison, Marion, Morris, Upshur | 47 min |
| Mar 31, 9:15 AM CDT | Severe Thunderstorm Warning | SHV | Columbia, Hempstead, Lafayette, Little River, Miller, Nevada | 60 min |
| Mar 31, 9:40 AM CDT | Severe Thunderstorm Warning | FWD | Henderson | 80 min |
| Mar 31, 9:44 AM CDT | Tornado Warning | SHV | Harrison, Marion | 31 min |
| Mar 31, 10:00 AM CDT | Severe Thunderstorm Warning | SHV | Columbia, Lafayette, Miller, Union | 60 min |
| Mar 31, 10:03 AM CDT | Severe Thunderstorm Warning | SHV | Cass, Harrison, Marion, Panola | 27 min |
| Mar 31, 10:06 AM CDT | Severe Thunderstorm Warning | SHV | Gregg, Harrison, Panola, Rusk, Smith | 39 min |
| Mar 31, 10:31 AM CDT | Severe Thunderstorm Warning | SHV | Cherokee, Harrison, Nacogdoches, Panola, Rusk, Shelby and 1 more | 59 min |
| Mar 31, 11:29 AM CDT | Severe Thunderstorm Warning | SHV | Angelina, Cherokee, Nacogdoches, Sabine, San Augustine, Shelby | 61 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, 10.2 hours before the alert went out and 102 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
- 986 J/kg
- Mixed-layer CIN
- -70 J/kg
- Mixed-layer LCL
- 1273 m above ground
- 0-6 km bulk shear
- 34 kt
- 0-1 km storm-relative helicity
- 95 m²/s²
- 0-3 km storm-relative helicity
- 177 m²/s²
- Significant tornado parameter
- 0.3
- Supercell composite
- 5.4
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Mar 30, 9:06 PM CDT | Severe Thunderstorm Watch | SPC | Benton, Carroll, Crawford, Franklin, Madison, Sebastian and 1 more | 5 hr |
| Mar 30, 10:44 PM CDT | Mesoscale Discussion | SPC | Crawford, Franklin, Johnson, Logan, Madison, Newton and 6 more | 91 min |
| Mar 31, 7:36 AM CDT | Mesoscale Discussion | SPC | Columbia, Hempstead, Howard, Lafayette, Little River, Miller and 2 more | 114 min |
| Mar 31, 9:20 AM CDT | Severe Thunderstorm Watch | SPC | Columbia, Union | 5 hr |
| Mar 31, 10:33 AM CDT | Mesoscale Discussion | SPC | Calhoun, Columbia, Union | 57 min |
| Mar 31, 11:54 AM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Beauregard, Caldwell, Catahoula, Concordia and 20 more | 36 min |
| Mar 31, 12:17 PM CDT | Severe Thunderstorm Watch | SPC | Acadia, Allen, Ascension, Avoyelles, Beauregard, Calcasieu and 32 more | 6 hr |
| Mar 31, 2:32 PM CDT | Mesoscale Discussion | SPC | Allen, Avoyelles, Beauregard, Calcasieu, Caldwell, Catahoula and 21 more | 58 min |
| Mar 31, 2:48 PM CDT | Severe Thunderstorm Watch | SPC | Cameron, Iberia, Saint Martin, St. Mary, Vermilion | 5 hr |
| Mar 31, 3:21 PM CDT | Mesoscale Discussion | SPC | Jefferson, Orleans, Saint Charles, Saint James, Saint John the Baptist, Saint Tammany and 1 more | 54 min |
| Mar 31, 3:38 PM CDT | Severe Thunderstorm Watch | SPC | Assumption, Jefferson, Lafourche, Orleans, Plaquemines, Saint Bernard and 5 more | 3 hr |
| Mar 30, 7:37 PM CDT | Mesoscale Discussion | SPC | Adair, Cherokee, Craig, Creek, Delaware, McIntosh and 9 more | 53 min |
| Mar 30, 8:14 PM CDT | Mesoscale Discussion | SPC | Atoka, Carter, Cleveland, Coal, Comanche, Cotton and 17 more | 91 min |
| Mar 31, 1:13 AM CDT | Mesoscale Discussion | SPC | Beckham, Blaine, Caddo, Canadian, Carter, Cleveland and 23 more | 62 min |
| Mar 31, 4:54 AM CDT | Mesoscale Discussion | SPC | Atoka, Bryan, Carter, Choctaw, Coal, Comanche and 12 more | 96 min |
| Mar 31, 1:00 PM CDT | Mesoscale Discussion | SPC | Austin, Bandera, Bastrop, Bexar, Blanco, Brazos and 32 more | 60 min |
| Mar 31, 1:17 PM CDT | Severe Thunderstorm Watch | SPC | Atascosa, Austin, Bandera, Bastrop, Bell, Bexar and 47 more | 9 hr |
| Mar 31, 5:24 PM CDT | Mesoscale Discussion | SPC | Atascosa, Brazoria, Chambers, DeWitt, Dimmit, Fort Bend and 18 more | 96 min |
| Mar 31, 6:20 PM CDT | Severe Thunderstorm Watch | SPC | Bee, Duval, Jim Wells, Kleberg, La Salle, Live Oak and 4 more | 4 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2013Severe Thunderstorm Watches in Oklahoma, 2013Severe Thunderstorm Watches in Arkansas, 2013Every severe thunderstorm watch in 2013
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.