Alert archive / Texas / Severe Thunderstorm Watches in 2016
Severe Thunderstorm Watch 186
The Storm Prediction Center issued this severe thunderstorm watch at May 21, 2016, 1:43 PM MDT for 4 counties in New Mexico; Cimarron County, Texas County, Oklahoma; 24 counties in Texas. It was in force for 7 hr.
The area
The outline as issued.
The facts
- Issued
- May 21, 2016, 1:43 PM MDT (19:43 UTC)
- Expired
- May 21, 2016, 9:00 PM MDT
- In force
- 7 hr
- Issued by
- the Storm Prediction Center
- Largest hail expected
- 2.5 in
- Strongest gust expected
- 60 kt
All 30 counties
Curry County, NM, Quay County, NM, Roosevelt County, NM, Union County, NM, Cimarron County, OK, Texas County, OK, Armstrong County, TX, Bailey County, TX, Carson County, TX, Castro County, TX, Cochran County, TX, Dallam County, TX, Deaf Smith County, TX, Hale County, TX, Hansford County, TX, Hartley County, TX, Hockley County, TX, Hutchinson County, TX, Lamb County, TX, Lubbock County, TX, Lynn County, TX, Moore County, TX, Oldham County, TX, Parmer County, TX, Potter County, TX, Randall County, TX, Sherman County, TX, Swisher County, TX, Terry County, TX, Yoakum County, TX
The radar
The Cannon AFB radar (KFDX), 80 km from the middle of the area, began a volume at 19:46 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
- 10%
- Ten or more severe hail reports
- 70%
- One or more hailstones of 2 inches or more
- 40%
- Six or more combined severe hail and wind reports
- 80%
Warnings issued inside it
17 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.
| Issued | Product | Office | Counties | Lasted |
|---|---|---|---|---|
| May 21, 2:30 PM MDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Sherman | 38 min |
| May 21, 4:20 PM MDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Moore | 70 min |
| May 21, 5:22 PM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith | 53 min |
| May 21, 5:25 PM MDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Moore | 65 min |
| May 21, 5:28 PM MDT | Severe Thunderstorm Warning | ABQ | Curry, Roosevelt | 32 min |
| May 21, 6:14 PM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Oldham | 61 min |
| May 21, 6:18 PM MDT | Severe Thunderstorm Warning | ABQ | Curry | 42 min |
| May 21, 6:25 PM MDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley, Moore | 65 min |
| May 21, 6:50 PM MDT | Flash Flood Warning | AMA | Hartley | 3 hr |
| May 21, 6:54 PM MDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley | 66 min |
| May 21, 7:02 PM MDT | Severe Thunderstorm Warning | ABQ | Curry | 13 min |
| May 21, 7:13 PM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Oldham | 47 min |
| May 21, 7:16 PM MDT | Severe Thunderstorm Warning | LUB | Terry | 45 min |
| May 21, 7:24 PM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith | 51 min |
| May 21, 7:54 PM MDT | Severe Thunderstorm Warning | AMA | Dallam, Hartley | 42 min |
| May 21, 8:09 PM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Oldham | 81 min |
| May 21, 8:31 PM MDT | Severe Thunderstorm Warning | AMA | Deaf Smith, Oldham | 59 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, 7.7 hours before the alert went out and 119 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
- 536 J/kg
- Mixed-layer CIN
- -258 J/kg
- Mixed-layer LCL
- 1579 m above ground
- 0-6 km bulk shear
- 13 kt
- 0-1 km storm-relative helicity
- 6 m²/s²
- 0-3 km storm-relative helicity
- 109 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 21, 5:26 PM MDT | Mesoscale Discussion | SPC | Curry, Quay, Roosevelt, Union | 2 hr |
| May 21, 1:25 PM MDT | Mesoscale Discussion | SPC | Texas | 95 min |
| May 21, 10:35 AM MDT | Mesoscale Discussion | SPC | Austin, Brazoria, Brazos, Burleson, Chambers, Colorado and 10 more | 85 min |
| May 21, 1:50 PM MDT | Mesoscale Discussion | SPC | Brewster, Loving, Presidio, Reeves | 85 min |
Nearby
Severe Thunderstorm Watches in Texas, 2016Severe Thunderstorm Watches in New Mexico, 2016Severe Thunderstorm Watches in Oklahoma, 2016Every severe thunderstorm watch in 2016
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.