Alert archive / Texas / Tornado Watches in 2016

Tornado Watch 93

April 16, 2016Beaver County, Texas County, Oklahoma; 26 counties in Texas

The Storm Prediction Center issued this tornado watch at Apr 16, 2016, 2:19 PM CDT for Beaver County, Texas County, Oklahoma; 26 counties in Texas. It was in force for 9 hr.

The area

The outline as issued.

The facts

Issued
Apr 16, 2016, 2:19 PM CDT (19:19 UTC)
Expired
Apr 16, 2016, 11:00 PM CDT
In force
9 hr
Issued by
the Storm Prediction Center
Largest hail expected
2 in
Strongest gust expected
60 kt
All 28 counties

Beaver County, OK, Texas County, OK, Armstrong County, TX, Briscoe County, TX, Carson County, TX, Childress County, TX, Collingsworth County, TX, Cottle County, TX, Crosby County, TX, Dickens County, TX, Donley County, TX, Floyd County, TX, Garza County, TX, Gray County, TX, Hall County, TX, Hansford County, TX, Hemphill County, TX, Hutchinson County, TX, Kent County, TX, King County, TX, Lipscomb County, TX, Moore County, TX, Motley County, TX, Ochiltree County, TX, Roberts County, TX, Sherman County, TX, Stonewall County, TX, Wheeler County, TX

The radar

The Amarillo radar (KAMA), 59 km from the middle of the area, began a volume at 19:19 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
40%
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
40%
One or more hailstones of 2 inches or more
30%
Six or more combined severe hail and wind reports
60%

Warnings issued inside it

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

IssuedProductOfficeCountiesLasted
Apr 16, 2:31 PM CDTSevere Thunderstorm WarningAMAArmstrong, Carson59 min
Apr 16, 2:55 PM CDTSevere Thunderstorm WarningLUBDickens, Kent, King50 min
Apr 16, 3:16 PM CDTSevere Thunderstorm WarningAMAArmstrong44 min
Apr 16, 3:42 PM CDTSevere Thunderstorm WarningLUBDickens, King33 min
Apr 16, 3:49 PM CDTSevere Thunderstorm WarningLUBBriscoe, Floyd26 min
Apr 16, 3:50 PM CDTSevere Thunderstorm WarningLUBBriscoe25 min
Apr 16, 3:59 PM CDTSevere Thunderstorm WarningLUBDickens, Kent31 min
Apr 16, 4:11 PM CDTSevere Thunderstorm WarningLUBDickens, Motley34 min
Apr 16, 4:13 PM CDTSevere Thunderstorm WarningLUBBriscoe, Floyd, Hall47 min
Apr 16, 4:14 PM CDTSevere Thunderstorm WarningLUBBriscoe, Hall46 min
Apr 16, 4:21 PM CDTTornado WarningLUBDickens, King13 min
Apr 16, 4:28 PM CDTSevere Thunderstorm WarningLUBDickens, Kent, King, Stonewall47 min
Apr 16, 4:47 PM CDTSevere Thunderstorm WarningAMADonley42 min
Apr 16, 5:04 PM CDTSevere Thunderstorm WarningLUBCrosby, Dickens, Garza26 min
Apr 16, 5:10 PM CDTSevere Thunderstorm WarningLUBBriscoe, Hall35 min
Apr 16, 5:23 PM CDTSevere Thunderstorm WarningLUBDickens, Kent37 min
Apr 16, 5:34 PM CDTSevere Thunderstorm WarningAMADonley56 min
Apr 16, 5:47 PM CDTTornado WarningLUBDickens, King28 min
Apr 16, 6:00 PM CDTSevere Thunderstorm WarningLUBDickens45 min
Apr 16, 6:13 PM CDTTornado WarningLUBCottle, Dickens, King, Motley32 min
Apr 16, 6:44 PM CDTSevere Thunderstorm WarningLUBCottle, Dickens, King, Motley31 min
Apr 16, 7:14 PM CDTSevere Thunderstorm WarningLUBCottle, King46 min
Apr 16, 7:19 PM CDTSevere Thunderstorm WarningLUBCottle, King41 min
Apr 16, 7:26 PM CDTSevere Thunderstorm WarningLUBCottle, King49 min
Apr 16, 7:32 PM CDTSevere Thunderstorm WarningLUBCottle, Dickens, King, Motley28 min
Apr 16, 7:39 PM CDTSevere Thunderstorm WarningLUBCrosby, Dickens36 min
Apr 16, 8:00 PM CDTSevere Thunderstorm WarningLUBCottle15 min
Apr 16, 8:12 PM CDTSevere Thunderstorm WarningLUBCottle48 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, 7.3 hours before the alert went out and 58 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, Amarillo Airport, TX at 12:00Z on 2016-04-16Temperature and dew point through the depth of the atmosphere, with the mixed-layer parcel. CAPE 363 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, Amarillo Airport, TX at 12:00Z on 2016-04-16The wind through the lowest 10 kilometers. Zero to 1 km storm-relative helicity 303 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
363 J/kg
Mixed-layer CIN
-41 J/kg
Mixed-layer LCL
538 m above ground
0-6 km bulk shear
43 kt
0-1 km storm-relative helicity
303 m²/s²
0-3 km storm-relative helicity
320 m²/s²
Significant tornado parameter
0.6
Supercell composite
3.9

Open this sounding in Storm Lab

The text

As transmitted.

573 
WWUS20 KWNS 161917
SEL3  
SPC WW 161917
OKZ000-TXZ000-170200-

URGENT - IMMEDIATE BROADCAST REQUESTED
TORNADO WATCH NUMBER 93
NWS STORM PREDICTION CENTER NORMAN OK
220 PM CDT SAT APR 16 2016

THE NWS STORM PREDICTION CENTER HAS ISSUED A

* TORNADO WATCH FOR PORTIONS OF 
  OKLAHOMA PANHANDLE
  EASTERN TEXAS PANHANDLE

* EFFECTIVE THIS SATURDAY AFTERNOON AND EVENING FROM 220 PM UNTIL
  900 PM CDT.

* PRIMARY THREATS INCLUDE...
  A COUPLE TORNADOES POSSIBLE
  SCATTERED LARGE HAIL AND ISOLATED VERY LARGE HAIL EVENTS TO 2
    INCHES IN DIAMETER POSSIBLE
  ISOLATED DAMAGING WIND GUSTS TO 70 MPH POSSIBLE

SUMMARY...SCATTERED THUNDERSTORMS WILL CONTINUE TO INTENSIFY THIS
AFTERNOON ALONG THE DRYLINE OVER THE TEXAS PANHANDLE...TRACKING
NORTHEASTWARD ACROSS THE WATCH AREA.  LARGE HAIL IS THE MAIN THREAT
WITH THESE STORMS...BUT AN ISOLATED TORNADO OR TWO IS ALSO POSSIBLE.

THE TORNADO WATCH AREA IS APPROXIMATELY ALONG AND 45 STATUTE
MILES EAST AND WEST OF A LINE FROM LIBERAL KANSAS TO 100 MILES
SOUTH SOUTHWEST OF CHILDRESS TEXAS.  FOR A COMPLETE DEPICTION OF
THE WATCH SEE THE ASSOCIATED WATCH OUTLINE UPDATE (WOUS64 KWNS
WOU3).

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.

&&

AVIATION...TORNADOES AND A FEW SEVERE THUNDERSTORMS WITH HAIL
SURFACE AND ALOFT TO 2 INCHES. EXTREME TURBULENCE AND SURFACE
WIND GUSTS TO 60 KNOTS. A FEW CUMULONIMBI WITH MAXIMUM TOPS TO
450. MEAN STORM MOTION VECTOR 20030.


...HART

SPC that day

Everything else SPC issued on the same UTC day.

IssuedProductOfficeCountiesLasted
Apr 15, 9:07 PM CDTMesoscale DiscussionSPCCimarron, Texas83 min
Apr 15, 9:53 PM CDTSevere Thunderstorm WatchSPCBeaver, Cimarron, Texas7 hr
Apr 15, 11:52 PM CDTMesoscale DiscussionSPCBeaver, Texas113 min
Apr 16, 2:22 AM CDTMesoscale DiscussionSPCBeaver, Cimarron, Texas53 min
Apr 16, 1:50 PM CDTMesoscale DiscussionSPCBeaver, Texas85 min
Apr 16, 6:14 PM CDTMesoscale DiscussionSPCBeaver, Texas2 hr
Apr 16, 6:52 PM CDTMesoscale DiscussionSPCComanche, Cotton, Greer, Harmon, Jackson, Kiowa and 1 more113 min
Apr 16, 3:53 PM CDTMesoscale DiscussionSPCCoke, Crockett, Fisher, Glasscock, Howard, Irion and 6 more67 min
Apr 16, 4:49 PM CDTTornado WatchSPCBorden, Callahan, Coke, Coleman, Concho, Crane and 25 more7 hr

Nearby

Tornado Watches in Texas, 2016Tornado Watches in Oklahoma, 2016Every tornado 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.