Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 45, NWS San Angelo, TX

April 19, 2016Shackelford County, Throckmorton County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 19, 2016, 11:09 PM CDT for Shackelford County, Throckmorton County, Texas. It was in force for 15 min. No storm report in the archive falls inside the area while it was in force.

The area

The outline as issued.

The facts

Issued: Apr 19, 2016, 11:09 PM CDT (04:09 UTC)
Expired: Apr 19, 2016, 11:24 PM CDT
In force: 15 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.25 in
Wind: 60.0 mph

Counties Shackelford County, TX, Throckmorton County, TX

The radar

The Dyess AFB radar (KDYX), 53 km from the middle of the area, began a volume at 04:11 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.

Did it verify

Not verified. The Iowa Environmental Mesonet's Cow found no qualifying storm report inside this severe thunderstorm warning while it was in force. That is not proof nothing happened: reports are thin where few people live.

Cow counts a report within 15 km of the polygon while the warning was in force: a tornado for a tornado warning; hail of 1 inch or more, a gust of 58 mph or more or wind damage for a severe thunderstorm warning; a flash flood report for a flash flood warning.

The watch it was issued in

The SPC watch in force over the same counties when this warning went out.

Issued	Product	Office	Lasted
Apr 19, 9:59 PM CDT	Severe Thunderstorm Watch	SPC	5 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 4.2 hours before the alert went out and 168 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-p

Temperature in red, dew point in green, the mixed-layer parcel dashed.

Hodograph

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: 0 J/kg
Mixed-layer CIN: No buoyant parcel
Mixed-layer LCL: 1336 m above ground
0-6 km bulk shear: 32 kt
0-1 km storm-relative helicity: 18 m²/s²
0-3 km storm-relative helicity: 102 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.1

Open this sounding in Storm Lab

The text

As transmitted.

946 
WUUS54 KSJT 200409
SVRSJT
TXC417-447-200445-
/O.NEW.KSJT.SV.W.0045.160420T0409Z-160420T0445Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1109 PM CDT TUE APR 19 2016

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  SOUTHEASTERN THROCKMORTON COUNTY IN WEST CENTRAL TEXAS...
  NORTHEASTERN SHACKELFORD COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 1145 PM CDT

* AT 1108 PM CDT...A SEVERE THUNDERSTORM WAS LOCATED 6 MILES WEST OF
  WOODSON...OR 13 MILES SOUTH OF THROCKMORTON...MOVING EAST AT 30
  MPH.

  HAZARD...60 MPH WIND GUSTS AND HALF DOLLAR SIZE HAIL. 

  SOURCE...RADAR INDICATED. 

  IMPACT...HAIL DAMAGE TO VEHICLES IS EXPECTED. EXPECT WIND DAMAGE 
           TO ROOFS...SIDING...AND TREES. 

* THIS SEVERE THUNDERSTORM WILL BE NEAR...
  WOODSON AROUND 1120 PM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE THE
INTERSECTION OF US-183 AND US-283...US-183 NEAR THE THROCKMORTON-
STEPHENS COUNTY LINE AND THE INTERSECTION OF US-
283 AND RANCH ROAD 209.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

PREPARE IMMEDIATELY FOR LARGE HAIL AND DEADLY CLOUD TO GROUND
LIGHTNING. SEEK SHELTER INSIDE A WELL-BUILT STRUCTURE. STAY AWAY FROM
WINDOWS.

&&

LAT...LON 3309 9895 3295 9901 3295 9909 3279 9910
      3286 9930 3308 9927 3311 9895
TIME...MOT...LOC 0408Z 273DEG 24KT 3298 9914 

HAIL...1.25IN
WIND...60MPH
 
$$

1 follow-up statement

538 
WWUS54 KSJT 200424
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1124 PM CDT TUE APR 19 2016

TXC417-447-200432-
/O.CAN.KSJT.SV.W.0045.000000T0000Z-160420T0445Z/
THROCKMORTON TX-SHACKELFORD TX-
1124 PM CDT TUE APR 19 2016

...THE SEVERE THUNDERSTORM WARNING FOR SOUTHEASTERN THROCKMORTON AND
NORTHEASTERN SHACKELFORD COUNTIES IS CANCELLED...
                
THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED BELOW SEVERE
LIMITS...AND NO LONGER POSE AN IMMEDIATE THREAT TO LIFE OR PROPERTY.
THEREFORE THE WARNING HAS BEEN CANCELLED.  HOWEVER HEAVY RAIN IS
STILL POSSIBLE WITH THIS THUNDERSTORM.

REMEMBER...A SEVERE THUNDERSTORM WARNING STILL REMAINS IN EFFECT FOR
SOUTHWESTERN SHACKELFORD COUNTY UNTIL MIDNIGHT.

LAT...LON 3309 9895 3295 9901 3295 9909 3279 9910
      3286 9930 3308 9927 3311 9895
TIME...MOT...LOC 0421Z 273DEG 24KT 3297 9902 

$$

What forecasters said that day

The local office's own words before this severe thunderstorm warning went out, as it sent them, from the Iowa Environmental Mesonet's archive of National Weather Service text.

NWS San Angelo, TX wrote its last area forecast discussion before this severe thunderstorm warning went out at Apr 19, 6:39 PM CDT, 4 hours 30 minutes earlier.

Area forecast discussion, Apr 19, 6:39 PM CDT, 4 hours 30 minutes before

Area Forecast Discussion
National Weather Service SAN ANGELO TX
639 PM CDT TUE APR 19 2016

.AVIATION...
/00Z TAFS/

Cloud bases are currently VFR (3500-4500 ft) but will deteriorate
by late evening, eventually falling below 1000 ft across much of
the CWA late tonight. IFR conditions will prevail through mid-
morning with ceilings gradually rising and scattering out by
midday. Winds will be light and variable much of the TAF period,
becoming north to northeast on Wednesday in the wake of a weak
surface boundary. Scattered convection is expected tonight, but
confidence that any particular terminal will be affected is low.
VCSH remarks were included at various times for all sites, mainly
during the 02-05z period. Additional isolated convection will be
possible Wednesday afternoon, mainly southeast of a KSOA-KBWD
line.

&&

.PREV DISCUSSION... /issued 350 PM CDT TUE APR 19 2016/

SHORT TERM...
(Tonight and Wednesday)

Isolated showers and thunderstorms have developed this afternoon
in the vicinity of Fort Stockton, where MLCAPEs are 1000-1500
J/kg and convective inhibition has eroded. Breaks in the clouds
have developed across parts of west central Texas, but persistent
cloud cover has limited the instability in our area. Other showers
and thunderstorms have developed near and north of Lubbock, ahead
of a shortwave trough.

Forecast remains problematic with placement of convection across
our area tonight. If sufficient shower/thunderstorm development
occurs from Midland south to Fort Stockton, some of this could
move east/northeast into some of our western counties. Appears
that the highest rain chance tonight will be across the area north
of a Roby to Abilene to San Saba line. Additional convective
development is anticipated this evening northwest of our area and
possibly into the Big Country, as the aforementioned shortwave
moves east toward North Texas. A weak cold front will sag south
into the Big Country overnight. Could have additional
shower/thunderstorm development ahead of this front. This setup
may result in scattered to numerous thunderstorms affecting our
northern and northeastern counties. A marginal risk for severe
thunderstorms remains in place for much of west central Texas this
evening and tonight.

On Wednesday, carrying low chance PoPs across the southeastern
part of our area. With less cloud cover, temperatures will be
warmer Wednesday. Highs are expected to range from the mid to
upper 70s across the northern and eastern parts of our area, to
the lower 80s across part of the western Concho Valley into
Crockett County.

LONG TERM...
(Wednesday night through next Tuesday)

The upper low that has influenced the region the past few days
will weaken as it moves east from Midwest states
 and into the
Great Lakes region by Thursday. A shortwave on the back side of
the upper low will approach the area Wednesday evening, with an
associated weak cold front dropping south across West Central
Texas Wednesday night and early Thursday. Medium range models
develop convection north of the area in advance of the front
Wednesday night, with this activity moving south across the
forecast area as a possible MCS overnight into Thursday morning.
Indications are that the front will likely exit far southern
portions of the forecast area by late afternoon, with only some
lingering precipitation along the I-10 corridor through early
evening.

Friday and Saturday will dry and pleasant as upper level ridging
moves into the region. Still looking at another chance for
precipitation late next weekend into early next week as another
upper level system potentially impacts the region. Confidence
remains low concerning the eventual evolution of this system, so
POPs were kept low for Sunday and Sunday night.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 58  76  59  75 /  50  10  50  50
San Angelo 	 59  80  61  77 /  40  10  30  40
Junction 	 61  79  61  77 /  40  30  20  40

&&

.SJT Watches/Warnings/Advisories...
None.

&&

Johnson

Hazardous weather outlook, Apr 19, 2:58 PM CDT, 8 hours 11 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
258 PM CDT TUE APR 19 2016

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-202000-
FISHER-NOLAN-STERLING-COKE-RUNNELS-IRION-TOM GREEN-CONCHO-
CROCKETT-SCHLEICHER-SUTTON-HASKELL-THROCKMORTON-JONES-SHACKELFORD-
TAYLOR-CALLAHAN-COLEMAN-BROWN-MCCULLOCH-SAN SABA-MENARD-KIMBLE-
MASON-
258 PM CDT TUE APR 19 2016

THIS HAZARDOUS WEATHER OUTLOOK IS FOR PORTIONS OF WEST CENTRAL
TEXAS.

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS THE POTENTIAL FOR A FEW SEVERE THUNDERSTORMS LATE THIS
AFTERNOON AND TONIGHT ACROSS MUCH OF WEST CENTRAL TEXAS. THE MAIN
THREATS ARE LARGE HAIL AND DAMAGING WINDS.

.DAYS TWO THROUGH SEVEN...WEDNESDAY THROUGH MONDAY

THERE IS THE POTENTIAL FOR AN ISOLATED SEVERE THUNDERSTORM...
WEDNESDAY AND THURSDAY...MAINLY ALONG AND SOUTH OF AN OZONA TO
BRADY TO BROWNWOOD LINE. THE MAIN THREATS WILL BE LARGE HAIL AND
DAMAGING WINDS.

.SPOTTER INFORMATION STATEMENT...

LIMITED SPOTTER ACTIVATION MAY BE NEEDED THIS EVENING.

In the hours before

Local storm report, Apr 19, 9:52 PM CDT, 1 hour 17 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
952 PM CDT TUE APR 19 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0947 PM     HAIL             MENARD                  30.92N  99.79W
04/19/2016  E2.50 INCH       MENARD             TX   EMERGENCY MNGR

&&

EVENT NUMBER SJT1600055

MC

Local storm report, Apr 19, 9:54 PM CDT, 1 hour 15 minutes before

PRELIMINARY LOCAL STORM REPORT...CORRECTED
NATIONAL WEATHER SERVICE SAN ANGELO TX
954 PM CDT TUE APR 19 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0947 PM     HAIL             MENARD                  30.92N  99.79W
04/19/2016  M2.00 INCH       MENARD             TX   EMERGENCY MNGR

&&

CORRECTED EVENT

EVENT NUMBER SJT1600055

JOHNSON

Special weather statement, Apr 19, 10:06 PM CDT, 1 hour 3 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1006 PM CDT TUE APR 19 2016

TXZ049-200345-
FISHER TX-
1006 PM CDT TUE APR 19 2016

...SIGNIFICANT WEATHER ADVISORY FOR FISHER COUNTY UNTIL 1045 PM
CDT...

AT 1005 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 7 MILES
WEST OF ROTAN...OR 21 MILES WEST OF HAMLIN...MOVING EAST AT 35 MPH.

DIME SIZE HAIL AND WIND GUSTS UP TO 50 MPH WILL BE POSSIBLE WITH THIS
STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...
  ROBY AROUND 1015 PM CDT.
  SYLVESTER AND MCCAULLEY AROUND 1025 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE HITSON.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TORRENTIAL RAINFALL IS ALSO OCCURRING WITH THIS STORM...AND MAY LEAD
TO FLASH FLOODING. DO NOT DRIVE YOUR VEHICLE THROUGH FLOODED
ROADWAYS.

&&

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 300 AM CDT FOR
WEST CENTRAL TEXAS.

LAT...LON 3258 10016 3269 10065 3296 10062 3296 10015
TIME...MOT...LOC 0305Z 282DEG 37KT 3279 10048

Local storm report, Apr 19, 10:54 PM CDT, 15 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1054 PM CDT TUE APR 19 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

1044 PM     FLASH FLOOD      MENARD                  30.92N  99.79W
04/19/2016                   MENARD             TX   LAW ENFORCEMENT

            HIGHWAY 83 IS FLOODED IN MENARD. AT LEAST ONE MOTORIST
            HAS BEEN STRANDED DUE TO FLOODWATERS.

&&

EVENT NUMBER SJT1600056

JOHNSON

Special weather statement, Apr 19, 11:00 PM CDT, 9 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1100 PM CDT TUE APR 19 2016

TXZ168-170-200445-
MASON TX-MENARD TX-
1100 PM CDT TUE APR 19 2016

...SIGNIFICANT WEATHER ADVISORY FOR EAST CENTRAL MENARD AND
NORTHWESTERN MASON COUNTIES UNTIL 1145 PM CDT...

AT 1058 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR HEXT...OR 14
MILES EAST OF MENARD...MOVING EAST AT 20 MPH.

NICKEL SIZE HAIL AND WINDS IN EXCESS OF 40 MPH WILL BE POSSIBLE WITH
THIS STORM.

THIS STRONG THUNDERSTORM WILL BE NEAR...

  HEXT AROUND 1105 PM CDT.
  STREETER AROUND 1135 PM CDT.
  KATEMCY AROUND 1145 PM CDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE THE INTERSECTION OF
HIGHWAY 29 AND RANCH ROAD 1222...THE INTERSECTION OF US-
377 AND RANCH ROAD 1222 AND US-377/US 87 NEAR THE MASON-
MCCULLOCH COUNTY LINE.

LAT...LON 3087 9961 3094 9958 3094 9920 3070 9929
TIME...MOT...LOC 0358Z 279DEG 16KT 3089 9955

Local storm report, Apr 19, 11:05 PM CDT, 4 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1105 PM CDT TUE APR 19 2016

..TIME...   ...EVENT...      ...CITY LOCATION...     ...LAT.LON...
..DATE...   ....MAG....      ..COUNTY LOCATION..ST.. ...SOURCE....
            ..REMARKS..

0935 PM     HAIL             1 NE RULE               33.20N  99.88W
04/19/2016  E1.75 INCH       HASKELL            TX   TRAINED SPOTTER

&&

EVENT NUMBER SJT1600057

JOHNSON

The office that day

Everything else NWS San Angelo, TX issued on the same UTC day.

Issued	Product	Office	Counties	Lasted
Apr 19, 7:12 PM CDT	Special Weather Statement	SJT	Menard	48 min
Apr 19, 7:26 PM CDT	Special Weather Statement	SJT	Menard	49 min
Apr 19, 8:03 PM CDT	Severe Thunderstorm Warning	SJT	Menard, Schleicher	42 min
Apr 19, 8:10 PM CDT	Special Weather Statement	SJT	Schleicher	35 min
Apr 19, 8:42 PM CDT	Severe Thunderstorm Warning	SJT	Menard	48 min
Apr 19, 8:51 PM CDT	Special Weather Statement	SJT	Schleicher	39 min
Apr 19, 8:57 PM CDT	Severe Thunderstorm Warning	SJT	Menard, Schleicher	48 min
Apr 19, 9:02 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	43 min
Apr 19, 9:16 PM CDT	Areal Flood Advisory	SJT	Menard, Schleicher	3 hr
Apr 19, 9:19 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	41 min
Apr 19, 9:21 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	39 min
Apr 19, 9:29 PM CDT	Severe Thunderstorm Warning	SJT	Menard	46 min
Apr 19, 9:37 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	23 min
Apr 19, 9:46 PM CDT	Special Weather Statement	SJT	Menard	44 min
Apr 19, 9:54 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	21 min
Apr 19, 9:56 PM CDT	Severe Thunderstorm Warning	SJT	Jones	49 min
Apr 19, 9:57 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	48 min
Apr 19, 10:06 PM CDT	Special Weather Statement	SJT	Fisher	39 min
Apr 19, 10:11 PM CDT	Flash Flood Warning	SJT	Menard	3 hr
Apr 19, 10:14 PM CDT	Severe Thunderstorm Warning	SJT	McCulloch, Menard	46 min
Apr 19, 10:27 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Shackelford, Throckmorton	48 min
Apr 19, 10:33 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones	42 min
Apr 19, 10:35 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	40 min
Apr 19, 11:00 PM CDT	Special Weather Statement	SJT	Mason	45 min
Apr 19, 11:05 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Taylor	40 min
Apr 19, 11:13 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	47 min
Apr 19, 11:24 PM CDT	Areal Flood Advisory	SJT	Fisher, Jones	2 hr
Apr 19, 11:39 PM CDT	Special Weather Statement	SJT	Callahan	51 min
Apr 19, 11:45 PM CDT	Special Weather Statement	SJT	Shackelford	45 min
Apr 19, 11:55 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	35 min
Apr 20, 12:12 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman	48 min
Apr 20, 12:20 AM CDT	Areal Flood Advisory	SJT	Callahan, Taylor	115 min
Apr 20, 12:37 AM CDT	Special Weather Statement	SJT	Nolan	38 min
Apr 20, 1:10 AM CDT	Special Weather Statement	SJT	Coleman	50 min
Apr 20, 1:14 AM CDT	Special Weather Statement	SJT	Sterling	46 min
Apr 20, 1:24 AM CDT	Flash Flood Warning	SJT	Callahan	3 hr
Apr 20, 1:48 AM CDT	Special Weather Statement	SJT	Brown	42 min
Apr 20, 2:08 AM CDT	Areal Flood Advisory	SJT	Brown, Coleman	112 min
Apr 20, 3:18 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Schleicher, Tom Green	27 min
Apr 20, 3:44 PM CDT	Severe Thunderstorm Warning	SJT	Irion, Schleicher, Tom Green	31 min

Nearby

Severe Thunderstorm Warnings in Texas, 2016 Every severe thunderstorm warning 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.