Alert archive / Texas / Severe Thunderstorm Watches in 2015
Severe Thunderstorm Watch 236
The Storm Prediction Center issued this severe thunderstorm watch at May 28, 2015, 3:26 PM CDT for 19 counties in Oklahoma; 50 counties in Texas. It was in force for 8 hr.
The area
The outline as issued.
The facts
- Issued
- May 28, 2015, 3:26 PM CDT (20:26 UTC)
- Expired
- May 28, 2015, 11:00 PM CDT
- In force
- 8 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 69 counties
Caddo County, OK, Canadian County, OK, Carter County, OK, Cleveland County, OK, Comanche County, OK, Cotton County, OK, Garvin County, OK, Grady County, OK, Jefferson County, OK, Lincoln County, OK, Love County, OK, McClain County, OK, Murray County, OK, Oklahoma County, OK, Pontotoc County, OK, Pottawatomie County, OK, Seminole County, OK, Stephens County, OK, Tillman County, OK, Archer County, TX, Bell County, TX, Bosque County, TX, Brown County, TX, Clay County, TX, Coleman County, TX, Collin County, TX, Comanche County, TX, Concho County, TX, Cooke County, TX, Coryell County, TX, Dallas County, TX, Delta County, TX, Denton County, TX, Eastland County, TX, Ellis County, TX, Erath County, TX, Falls County, TX, Fannin County, TX, Freestone County, TX, Grayson County, TX, Hamilton 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, Lampasas County, TX, Limestone County, TX, McCulloch County, TX, McLennan County, TX, Mills County, TX, Montague County, TX, Navarro County, TX, Palo Pinto County, TX, Parker County, TX, Rains County, TX, Rockwall County, TX, San Saba County, TX, Somervell County, TX, Stephens County, TX, Tarrant County, TX, Van Zandt County, TX, Wichita County, TX, Wise County, TX, Young County, TX
The radar
The Altus AFB radar (KFDR), 109 km from the middle of the area, began a volume at 20:26 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
- 50%
- 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
- 30%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
43 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 28, 3:43 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Comanche, Grady | 32 min |
| May 28, 3:56 PM CDT | Severe Thunderstorm Warning | FWD | Hill, Limestone, McLennan, Navarro | 31 min |
| May 28, 4:14 PM CDT | Severe Thunderstorm Warning | OUN | Caddo, Grady, McClain | 33 min |
| May 28, 4:20 PM CDT | Flash Flood Warning | OUN | Comanche | 3 hr |
| May 28, 4:29 PM CDT | Flash Flood Warning | OUN | Comanche, Grady | 3 hr |
| May 28, 5:00 PM CDT | Severe Thunderstorm Warning | OUN | Archer, Baylor, Wichita, Wilbarger | 45 min |
| May 28, 5:12 PM CDT | Severe Thunderstorm Warning | OUN | Comanche | 21 min |
| May 28, 5:27 PM CDT | Severe Thunderstorm Warning | FWD | Young | 63 min |
| May 28, 5:39 PM CDT | Severe Thunderstorm Warning | FWD | Stephens | 51 min |
| May 28, 5:40 PM CDT | Severe Thunderstorm Warning | OUN | Tillman | 50 min |
| May 28, 5:58 PM CDT | Severe Thunderstorm Warning | OUN | Tillman | 47 min |
| May 28, 6:17 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Jefferson, Stephens, Tillman | 58 min |
| May 28, 6:23 PM CDT | Severe Thunderstorm Warning | FWD | Collin, Hunt | 41 min |
| May 28, 6:27 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Palo Pinto, Stephens, Young | 63 min |
| May 28, 6:36 PM CDT | Flash Flood Warning | FWD | Stephens, Young | 114 min |
| May 28, 6:54 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Callahan, Coleman, Runnels, Shackelford, Taylor | 51 min |
| May 28, 7:01 PM CDT | Flash Flood Warning | FWD | Jack | 3 hr |
| May 28, 7:03 PM CDT | Severe Thunderstorm Warning | OUN | Comanche, Cotton, Jefferson, Stephens | 42 min |
| May 28, 7:03 PM CDT | Severe Thunderstorm Warning | FWD | Eastland | 42 min |
| May 28, 7:12 PM CDT | Flash Flood Warning | OUN | Comanche | 3 hr |
| May 28, 7:13 PM CDT | Flash Flood Warning | FWD | Palo Pinto | 3 hr |
| May 28, 7:21 PM CDT | Severe Thunderstorm Warning | FWD | Jack, Palo Pinto, Parker, Wise | 54 min |
| May 28, 7:34 PM CDT | Flash Flood Warning | OUN | Caddo, Comanche, Cotton, Grady, Jefferson, Stephens | 4 hr |
| May 28, 7:43 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Jefferson, Love, Stephens | 47 min |
| May 28, 7:43 PM CDT | Severe Thunderstorm Warning | FWD | Montague | 47 min |
| May 28, 7:52 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Callahan, Coke, Coleman, Concho, Runnels and 2 more | 38 min |
| May 28, 7:53 PM CDT | Flash Flood Warning | FWD | Montague | 3 hr |
| May 28, 7:54 PM CDT | Flash Flood Warning | OUN | Wichita | 3 hr |
| May 28, 7:58 PM CDT | Severe Thunderstorm Warning | SJT | Concho, Menard, Schleicher, Tom Green | 47 min |
| May 28, 8:09 PM CDT | Flash Flood Warning | OUN | Archer | 3 hr |
| May 28, 8:14 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Garvin, Jefferson, Love, Murray, Stephens | 46 min |
| May 28, 8:29 PM CDT | Severe Thunderstorm Warning | FWD | Cooke, Denton, Montague, Wise | 61 min |
| May 28, 8:35 PM CDT | Flash Flood Warning | FWD | Cooke | 3 hr |
| May 28, 8:44 PM CDT | Flash Flood Warning | OUN | Love | 3 hr |
| May 28, 8:51 PM CDT | Flash Flood Warning | OUN | Carter, Garvin, Murray | 3 hr |
| May 28, 8:57 PM CDT | Flash Flood Warning | FWD | Wise | 3 hr |
| May 28, 8:58 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Garvin, Love, Marshall, Murray, Stephens | 47 min |
| May 28, 9:11 PM CDT | Severe Thunderstorm Warning | SJT | Brown, Coleman, Concho, McCulloch, San Saba | 49 min |
| May 28, 9:25 PM CDT | Flash Flood Warning | SJT | Brown | 3 hr |
| May 28, 9:31 PM CDT | Severe Thunderstorm Warning | SJT | Kimble, McCulloch, Mason, Menard | 59 min |
| May 28, 9:42 PM CDT | Severe Thunderstorm Warning | OUN | Carter, Johnston, Love, Marshall, Murray, Pontotoc | 48 min |
| May 28, 10:06 PM CDT | Flash Flood Warning | FWD | Comanche | 3 hr |
| May 28, 10:35 PM CDT | Severe Thunderstorm Warning | FWD | Hamilton, Lampasas, Mills | 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
Norman, OK (KOUN), launched 12:00Z, 8.4 hours before the alert went out and 170 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
- 39 J/kg
- Mixed-layer CIN
- -204 J/kg
- Mixed-layer LCL
- 1310 m above ground
- 0-6 km bulk shear
- 30 kt
- 0-1 km storm-relative helicity
- 52 m²/s²
- 0-3 km storm-relative helicity
- 121 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 |
|---|---|---|---|---|
| May 28, 2:50 AM CDT | Mesoscale Discussion | SPC | Caddo, Carter, Comanche, Cotton, Garvin, Grady and 11 more | 2 hr |
| May 28, 10:37 AM CDT | Mesoscale Discussion | SPC | LeFlore, McCurtain, Sequoyah | 53 min |
| May 28, 2:18 PM CDT | Severe Thunderstorm Watch | SPC | Beaver, Cimarron, Texas | 7 hr |
| May 28, 2:56 PM CDT | Mesoscale Discussion | SPC | Bryan, Carter, Coal, Comanche, Cotton, Garvin and 9 more | 94 min |
| May 28, 5:33 PM CDT | Mesoscale Discussion | SPC | Beaver, Cimarron, Harper, Texas | 87 min |
| May 28, 11:45 AM CDT | Mesoscale Discussion | SPC | Andrews, Borden, Cochran, Cottle, Crosby, Dawson and 28 more | 90 min |
| May 28, 12:44 PM CDT | Tornado Watch | SPC | Andrews, Bailey, Baylor, Borden, Brewster, Callahan and 58 more | 7 hr |
| May 28, 2:04 PM CDT | Mesoscale Discussion | SPC | Atascosa, Austin, Bastrop, Bee, Bell, Bexar and 30 more | 56 min |
| May 28, 3:42 PM CDT | Mesoscale Discussion | SPC | Andrews, Bailey, Baylor, Borden, Brewster, Cochran and 55 more | 63 min |
| May 28, 6:57 PM CDT | Mesoscale Discussion | SPC | Bandera, Bexar, Blanco, Coke, Comal, Concho and 28 more | 2 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2015Severe Thunderstorm Watches in Oklahoma, 2015Every severe thunderstorm watch in 2015
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.