Alert archive / Texas / Tornado Watches in 2010
Tornado Watch 186
The Storm Prediction Center issued this tornado watch at May 18, 2010, 2:37 PM MDT for 7 counties in New Mexico; Beaver County, Cimarron County, Texas County, Oklahoma; 20 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 18, 2010, 2:37 PM MDT (20:37 UTC)
- Expired
- May 18, 2010, 9:50 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 3.5 in
- Strongest gust expected
- 70 kt
All 30 counties
Colfax County, NM, Guadalupe County, NM, Harding County, NM, Mora County, NM, Quay County, NM, San Miguel County, NM, Union County, NM, 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), 134 km from the middle of the area, began a volume at 20:37 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
- 50%
- One or more EF2 to EF5 tornadoes
- 20%
- Ten or more severe wind reports
- 50%
- One or more gusts of 65 knots or more
- 30%
- Ten or more severe hail reports
- 80%
- One or more hailstones of 2 inches or more
- 50%
- Six or more combined severe hail and wind reports
- 90%
Warnings issued inside it
22 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 18, 3:43 PM MDT | Severe Thunderstorm Warning | AMA | Hartley, Moore | 62 min |
| May 18, 4:21 PM MDT | Tornado Warning | AMA | Hartley | 24 min |
| May 18, 4:46 PM MDT | Tornado Warning | AMA | Hartley, Moore | 29 min |
| May 18, 4:52 PM MDT | Severe Thunderstorm Warning | AMA | Hartley, Moore, Sherman | 83 min |
| May 18, 4:58 PM MDT | Tornado Warning | AMA | Hartley, Moore | 32 min |
| May 18, 5:26 PM MDT | Tornado Warning | AMA | Moore, Sherman | 49 min |
| May 18, 5:38 PM MDT | Severe Thunderstorm Warning | ABQ | Harding, Union | 67 min |
| May 18, 6:06 PM MDT | Severe Thunderstorm Warning | AMA | Cimarron, Texas | 54 min |
| May 18, 6:14 PM MDT | Tornado Warning | AMA | Hansford, Hutchinson, Moore | 46 min |
| May 18, 6:44 PM MDT | Severe Thunderstorm Warning | ABQ | Union | 16 min |
| May 18, 6:44 PM MDT | Tornado Warning | AMA | Texas | 31 min |
| May 18, 6:51 PM MDT | Tornado Warning | AMA | Hansford, Hutchinson, Moore, Roberts | 39 min |
| May 18, 7:03 PM MDT | Severe Thunderstorm Warning | AMA | Cimarron | 57 min |
| May 18, 7:17 PM MDT | Severe Thunderstorm Warning | AMA | Texas | 41 min |
| May 18, 7:29 PM MDT | Severe Thunderstorm Warning | AMA | Hansford, Hutchinson, Ochiltree, Roberts | 91 min |
| May 18, 7:32 PM MDT | Severe Thunderstorm Warning | AMA | Texas | 88 min |
| May 18, 7:44 PM MDT | Tornado Warning | AMA | Dallam, Sherman | 61 min |
| May 18, 8:21 PM MDT | Tornado Warning | AMA | Hutchinson, Roberts | 39 min |
| May 18, 8:44 PM MDT | Tornado Warning | AMA | Cimarron, Texas | 61 min |
| May 18, 9:00 PM MDT | Tornado Warning | AMA | Hemphill, Roberts | 45 min |
| May 18, 9:40 PM MDT | Tornado Warning | AMA | Cimarron, Texas | 65 min |
| May 18, 9:41 PM MDT | Tornado Warning | AMA | Hemphill, Roberts | 64 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
Amarillo Airport, TX (KAMA), launched 12:00Z, 8.6 hours before the alert went out and 135 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
- 95 J/kg
- Mixed-layer CIN
- -247 J/kg
- Mixed-layer LCL
- 840 m above ground
- 0-6 km bulk shear
- 36 kt
- 0-1 km storm-relative helicity
- 78 m²/s²
- 0-3 km storm-relative helicity
- 160 m²/s²
- Significant tornado parameter
- 0.0
- Supercell composite
- 0.2
SPC that day
Everything else SPC issued on the same UTC day.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 17, 6:23 PM MDT | Mesoscale Discussion | SPC | Colfax, De Baca, Guadalupe, Harding, Mora, Quay and 2 more | 67 min |
| May 17, 8:18 PM MDT | Mesoscale Discussion | SPC | Colfax, Curry, Harding, Quay, Union | 87 min |
| May 18, 1:02 PM MDT | Mesoscale Discussion | SPC | Curry, Harding, Quay, Union | 118 min |
| May 18, 2:05 PM MDT | Mesoscale Discussion | SPC | Curry, Harding, Quay, Union | 55 min |
| May 17, 6:46 PM MDT | Mesoscale Discussion | SPC | Atascosa, Austin, Bandera, Bastrop, Bexar, Blanco and 52 more | 89 min |
| May 17, 8:57 PM MDT | Severe Thunderstorm Watch | SPC | Aransas, Atascosa, Bee, Brazoria, Calhoun, Colorado and 26 more | 7 hr |
| May 17, 10:06 PM MDT | Mesoscale Discussion | SPC | Bandera, Edwards, Kerr, Real, Val Verde | 54 min |
| May 18, 12:23 AM MDT | Mesoscale Discussion | SPC | Dimmit, La Salle, Maverick, Webb, Zavala | 97 min |
| May 18, 4:32 AM MDT | Mesoscale Discussion | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Kenedy and 3 more | 88 min |
| May 18, 5:11 AM MDT | Severe Thunderstorm Watch | SPC | Brooks, Cameron, Duval, Hidalgo, Jim Hogg, Jim Wells and 5 more | 5 hr |
| May 18, 8:07 AM MDT | Mesoscale Discussion | SPC | Cameron, Hidalgo, Kenedy, Willacy | 83 min |
| May 18, 2:03 PM MDT | Mesoscale Discussion | SPC | Brewster, Crockett, Irion, Midland, Reagan, Terrell and 2 more | 117 min |
| May 18, 4:05 PM MDT | Mesoscale Discussion | SPC | Andrews, Bailey, Borden, Briscoe, Castro, Cochran and 17 more | 85 min |
Nearby
Tornado Watches in Texas, 2010Tornado Watches in New Mexico, 2010Tornado Watches in Oklahoma, 2010Every tornado watch in 2010
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.