Alert archive / Texas / Tornado Watches in 2015

Tornado Watch 196

May 23, 201555 counties in Texas

The Storm Prediction Center issued this tornado watch at May 23, 2015, 3:04 PM CDT for 55 counties in Texas. It was in force for 6 hr.

The area

The outline as issued.

The facts

Issued
May 23, 2015, 3:04 PM CDT (20:04 UTC)
Expired
May 23, 2015, 9:00 PM CDT
In force
6 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
55 kt
All 55 counties

Andrews County, TX, Borden County, TX, Brewster County, TX, Brown County, TX, Callahan County, TX, Coke County, TX, Coleman County, TX, Concho County, TX, Crane County, TX, Crockett County, TX, Dawson County, TX, Dimmit County, TX, Ector County, TX, Edwards County, TX, Fisher County, TX, Gaines County, TX, Glasscock County, TX, Haskell County, TX, Howard County, TX, Irion County, TX, Jeff Davis County, TX, Jones County, TX, Kimble County, TX, Kinney County, TX, Loving County, TX, Martin County, TX, Mason County, TX, Maverick County, TX, McCulloch County, TX, Menard County, TX, Midland County, TX, Mitchell County, TX, Nolan County, TX, Pecos County, TX, Presidio County, TX, Reagan County, TX, Real County, TX, Reeves County, TX, Runnels County, TX, San Saba County, TX, Schleicher County, TX, Scurry County, TX, Shackelford County, TX, Sterling County, TX, Sutton County, TX, Taylor County, TX, Terrell County, TX, Throckmorton County, TX, Tom Green County, TX, Upton County, TX, Uvalde County, TX, Val Verde County, TX, Ward County, TX, Winkler County, TX, Zavala County, TX

The radar

The Midland/Odessa radar (KMAF), 49 km from the middle of the area, began a volume at 20:06 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
30%
One or more EF2 to EF5 tornadoes
20%
Ten or more severe wind reports
30%
One or more gusts of 65 knots or more
10%
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
70%

Warnings issued inside it

19 tornado, severe thunderstorm and flash flood warnings for its counties while it was in force.

IssuedProductOfficeCountiesLasted
May 23, 3:11 PM CDTFlash Flood WarningEWXBandera, Real, Uvalde2 hr
May 23, 3:36 PM CDTSevere Thunderstorm WarningSJTBrown24 min
May 23, 3:44 PM CDTSevere Thunderstorm WarningMAFAndrews, Ector, Midland61 min
May 23, 4:02 PM CDTSevere Thunderstorm WarningMAFAndrews, Dawson, Gaines, Martin58 min
May 23, 4:08 PM CDTFlash Flood WarningEWXEdwards, Kinney, Val Verde3 hr
May 23, 4:23 PM CDTFlash Flood WarningMAFAndrews, Ector, Gaines4 hr
May 23, 4:24 PM CDTSevere Thunderstorm WarningMAFCrane, Ector, Martin, Midland, Upton66 min
May 23, 4:45 PM CDTSevere Thunderstorm WarningMAFDawson45 min
May 23, 4:50 PM CDTFlash Flood WarningEWXBandera, Edwards, Kerr, Real6 hr
May 23, 5:11 PM CDTFlash Flood WarningSJTKimble4 hr
May 23, 5:14 PM CDTFlash Flood WarningEWXBandera, Medina, Real, Uvalde3 hr
May 23, 5:16 PM CDTSevere Thunderstorm WarningMAFCrane, Ector, Pecos, Upton, Ward, Winkler44 min
May 23, 5:25 PM CDTFlash Flood WarningSJTMason, Menard3 hr
May 23, 5:51 PM CDTSevere Thunderstorm WarningEWXUvalde39 min
May 23, 6:05 PM CDTSevere Thunderstorm WarningSJTFisher25 min
May 23, 6:22 PM CDTFlash Flood WarningMAFEctor, Martin, Midland3 hr
May 23, 7:25 PM CDTFlash Flood WarningEWXFrio, Zavala3 hr
May 23, 7:38 PM CDTSevere Thunderstorm WarningSJTFisher, Haskell, Jones52 min
May 23, 8:10 PM CDTFlash Flood WarningEWXBandera, Medina, Uvalde3 hr

Discussions around it

SPC mesoscale discussions over the same counties from four hours before the watch to its end.

The nearest sounding before it

Midland Regional, TX (KMAF), launched 12:00Z, 8.1 hours before the alert went out and 50 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.

Skew-T log-pSkew-T log-p diagram, Midland Regional, TX at 12:00Z on 2015-05-23Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 494 joules per kilogram.LCLLFCEL10008507005003002001001 km2 km3 km6 km9 km12 km15 km-30°-20°-10°0°10°20°30°40°
Temperature in red, dew point in green, the mixed-layer parcel dashed.
HodographHodograph, Midland Regional, TX at 12:00Z on 2015-05-23The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 330 square meters per square second.19395878Sfc1 km3 km6 km9 kmRMLM
The wind turning with height, colored by layer: ground to 1 km, 1 to 3 km, 3 to 6 km, 6 to 10 km.
Mixed-layer CAPE
494 J/kg
Mixed-layer CIN
-248 J/kg
Mixed-layer LCL
1265 m above ground
0-6 km bulk shear
31 kt
0-1 km storm-relative helicity
330 m²/s²
0-3 km storm-relative helicity
404 m²/s²
Significant tornado parameter
0.0
Supercell composite
2.7

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

762 
WWUS20 KWNS 232001
SEL6  
SPC WW 232001
TXZ000-240200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 196
NWS STORM PREDICTION CENTER NORMAN OK
300 PM CDT SAT MAY 23 2015

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  PORTIONS OF WESTERN AND CENTRAL TEXAS INCLUDING THE MIDDLE RIO
GRANDE VALLEY

* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 300 PM UNTIL
  900 PM CDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  ISOLATED VERY LARGE HAIL EVENTS TO 2 INCHES IN DIAMETER POSSIBLE
  ISOLATED DAMAGING WIND GUSTS TO 65 MPH POSSIBLE

SUMMARY...THUNDERSTORMS CONTINUE TO GRADUALLY INCREASE ACROSS
PORTIONS OF WESTERN AND CENTRAL TEXAS AND ADJACENT NORTHERN
MEXICO...WITH SEVERE RISK INCREASING ACROSS THIS AREA.  LARGE HAIL
AND DAMAGING WINDS WILL BE POSSIBLE...ALONG WITH A COUPLE OF
TORNADOES INTO THE EVENING HOURS.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 120 STATUTE
MILES EAST AND WEST OF A LINE FROM 70 MILES NORTH NORTHEAST OF
BIG SPRING TEXAS TO 60 MILES SOUTH OF DRYDEN TEXAS.  FOR A
COMPLETE DEPICTION OF THE WATCH SEE THE ASSOCIATED WATCH OUTLINE
UPDATE (WOUS64 KWNS WOU6).

PRECAUTIONARY/PREPAREDNESS ACTIONS...

REMEMBER...A TORNADO WATCH MEANS CONDITIONS ARE FAVORABLE FOR
TORNADOES AND SEVERE THUNDERSTORMS IN AND CLOSE TO THE WATCH
AREA. PERSONS IN THESE AREAS SHOULD BE ON THE LOOKOUT FOR
THREATENING WEATHER CONDITIONS AND LISTEN FOR LATER STATEMENTS
AND POSSIBLE WARNINGS.

&&

OTHER WATCH INFORMATION...CONTINUE...WW 194...WW 195...

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 55 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
500. MEAN STORM MOTION VECTOR 23030.


...GOSS

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
May 22, 7:06 PM CDTMesoscale DiscussionSPCCrane, Ector, Loving, Pecos, Reeves, Ward and 1 more114 min
May 23, 12:35 AM CDTMesoscale DiscussionSPCBailey, Castro, Cochran, Deaf Smith, Hockley, Lamb and 6 more115 min
May 23, 5:38 AM CDTMesoscale DiscussionSPCArmstrong, Briscoe, Carson, Castro, Collingsworth, Donley and 9 more97 min
May 23, 12:17 PM CDTMesoscale DiscussionSPCBaylor, Briscoe, Castro, Childress, Cottle, Crosby and 17 more2 hr
May 23, 1:16 PM CDTTornado WatchSPCArcher, Armstrong, Bailey, Baylor, Briscoe, Castro and 31 more6 hr
May 23, 2:02 PM CDTMesoscale DiscussionSPCBrewster, Coke, Concho, Crane, Crockett, Ector and 28 more88 min
May 23, 3:44 PM CDTMesoscale DiscussionSPCArcher, Bailey, Baylor, Briscoe, Castro, Childress and 27 more2 hr
May 23, 5:04 PM CDTMesoscale DiscussionSPCArcher, Baylor, Bosque, Childress, Clay, Collin and 34 more2 hr
May 23, 5:30 PM CDTTornado WatchSPCArcher, Baylor, Briscoe, Childress, Clay, Collin and 30 more9 hr
May 23, 6:06 PM CDTMesoscale DiscussionSPCAndrews, Atascosa, Bandera, Bexar, Blanco, Borden and 61 more114 min
May 23, 6:19 PM CDTTornado WatchSPCAtascosa, Bandera, Bastrop, Bee, Bexar, Blanco and 30 more9 hr
May 23, 6:37 PM CDTMesoscale DiscussionSPCArcher, Clay, Cooke, Denton, Grayson, Montague and 2 more83 min

Nearby

Tornado Watches in Texas, 2015Every tornado 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.