Alert archive / Texas / Severe Thunderstorm Watches in 2007
Severe Thunderstorm Watch 424
The Storm Prediction Center issued this severe thunderstorm watch at Jun 19, 2007, 5:22 PM CDT for Beaver County, Cimarron County, Texas County, Oklahoma; 20 counties in Texas. It was in force for 9 hr.
The area
The outline as issued.
The facts
- Issued
- Jun 19, 2007, 5:22 PM CDT (22:22 UTC)
- Expired
- Jun 20, 2007, 2:00 AM CDT
- In force
- 9 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2 in
- Strongest gust expected
- 60 kt
All 23 counties
Beaver County, OK, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Carson County, TX, Collingsworth County, TX, Dallam County, TX, Deaf Smith County, TX, Donley County, TX, Gray County, TX, Hansford County, TX, Hartley County, TX, Hemphill County, TX, Hutchinson County, TX, Lipscomb County, TX, Moore County, TX, Ochiltree County, TX, Oldham County, TX, Potter County, TX, Randall County, TX, Roberts County, TX, Sherman County, TX, Wheeler County, TX
The radar
The Amarillo radar (KAMA), 95 km from the middle of the area, began a volume at 22:22 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
- 30%
- Ten or more severe hail reports
- 50%
- One or more hailstones of 2 inches or more
- 30%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
23 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 5:29 PM CDT | Severe Thunderstorm Warning | AMA | Oldham | 61 min |
| Jun 19, 5:38 PM CDT | Severe Thunderstorm Warning | AMA | Randall | 67 min |
| Jun 19, 5:39 PM CDT | Severe Thunderstorm Warning | AMA | Potter | 66 min |
| Jun 19, 6:05 PM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith | 55 min |
| Jun 19, 6:28 PM CDT | Severe Thunderstorm Warning | AMA | Oldham | 77 min |
| Jun 19, 6:40 PM CDT | Severe Thunderstorm Warning | AMA | Potter, Randall | 80 min |
| Jun 19, 6:52 PM CDT | Severe Thunderstorm Warning | AMA | Moore | 68 min |
| Jun 19, 7:00 PM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith | 75 min |
| Jun 19, 8:05 PM CDT | Severe Thunderstorm Warning | AMA | Potter, Randall | 70 min |
| Jun 19, 8:29 PM CDT | Flash Flood Warning | AMA | Potter, Randall | 31 min |
| Jun 19, 8:36 PM CDT | Flash Flood Warning | AMA | Potter, Randall | 2 hr |
| Jun 19, 8:36 PM CDT | Severe Thunderstorm Warning | AMA | Deaf Smith | 54 min |
| Jun 19, 9:01 PM CDT | Severe Thunderstorm Warning | AMA | Texas | 59 min |
| Jun 19, 9:10 PM CDT | Severe Thunderstorm Warning | AMA | Carson | 40 min |
| Jun 19, 9:34 PM CDT | Tornado Warning | AMA | Texas | 26 min |
| Jun 19, 9:53 PM CDT | Severe Thunderstorm Warning | AMA | Lipscomb | 88 min |
| Jun 19, 9:55 PM CDT | Severe Thunderstorm Warning | AMA | Beaver | 51 min |
| Jun 19, 10:00 PM CDT | Severe Thunderstorm Warning | AMA | Texas | 90 min |
| Jun 19, 10:11 PM CDT | Severe Thunderstorm Warning | AMA | Ochiltree | 64 min |
| Jun 19, 10:28 PM CDT | Flash Flood Warning | AMA | Lipscomb, Ochiltree | 3 hr |
| Jun 19, 10:35 PM CDT | Severe Thunderstorm Warning | AMA | Hemphill | 55 min |
| Jun 19, 11:27 PM CDT | Severe Thunderstorm Warning | AMA | Gray, Wheeler | 76 min |
| Jun 19, 11:40 PM CDT | Severe Thunderstorm Warning | AMA | Collingsworth | 95 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
Dodge City, (KDDC), launched 12:00Z, 10.4 hours before the alert went out and 253 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
- 2489 J/kg
- Mixed-layer CIN
- -34 J/kg
- Mixed-layer LCL
- 630 m above ground
- 0-6 km bulk shear
- 38 kt
- 0-1 km storm-relative helicity
- 18 m²/s²
- 0-3 km storm-relative helicity
- 166 m²/s²
- Significant tornado parameter
- 0.2
- Supercell composite
- 0.9
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| Jun 19, 3:31 PM CDT | Mesoscale Discussion | SPC | Cimarron, Texas | 89 min |
| Jun 19, 3:41 PM CDT | Mesoscale Discussion | SPC | Latimer, LeFlore, McCurtain, Pushmataha | 64 min |
| Jun 19, 4:37 PM CDT | Mesoscale Discussion | SPC | Alfalfa, Blaine, Creek, Garfield, Grant, Harper and 16 more | 23 min |
| Jun 19, 4:52 PM CDT | Severe Thunderstorm Watch | SPC | Alfalfa, Beckham, Blaine, Caddo, Canadian, Cleveland and 38 more | 7 hr |
Nearby
Severe Thunderstorm Watches in Texas, 2007Severe Thunderstorm Watches in Oklahoma, 2007Every severe thunderstorm watch in 2007
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.