Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 48, NWS San Angelo, TX

April 20, 2016Brown County, Callahan County, Coleman County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 20, 2016, 12:12 AM CDT for Brown County, Callahan County, Coleman County, Texas. It was in force for 48 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 20, 2016, 12:12 AM CDT (05:12 UTC)
Expired: Apr 20, 2016, 1:00 AM CDT
In force: 48 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Brown County, TX, Callahan County, TX, Coleman County, TX

The radar

The Dyess AFB radar (KDYX), 49 km from the middle of the area, began a volume at 05:15 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, 5.2 hours before the alert went out and 198 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.

003 
WUUS54 KSJT 200512
SVRSJT
TXC049-059-083-200600-
/O.NEW.KSJT.SV.W.0048.160420T0512Z-160420T0600Z/

BULLETIN - IMMEDIATE BROADCAST REQUESTED
SEVERE THUNDERSTORM WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
1212 AM CDT WED APR 20 2016

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* SEVERE THUNDERSTORM WARNING FOR...
  NORTHWESTERN BROWN COUNTY IN WEST CENTRAL TEXAS...
  NORTHEASTERN COLEMAN COUNTY IN WEST CENTRAL TEXAS...
  SOUTHEASTERN CALLAHAN COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 100 AM CDT

* AT 1211 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES EAST OF
  OPLIN...OR 16 MILES SOUTH OF BAIRD...MOVING EAST AT 20 MPH.

  HAZARD...60 MPH WIND GUSTS AND QUARTER 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...
  CROSS PLAINS AND CROSS CUT AROUND 100 AM CDT. 

OTHER LOCATIONS IMPACTED BY THIS SEVERE THUNDERSTORM INCLUDE US-
283 NEAR THE COLEMAN-CALLAHAN COUNTY LINE AND THE INTERSECTION OF US-
283 AND HIGHWAY 36.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3198 9910 3209 9952 3226 9949 3223 9912
      3208 9912 3208 9907
TIME...MOT...LOC 0511Z 282DEG 17KT 3216 9943 

HAIL...1.00IN
WIND...60MPH
 
$$

1 follow-up statement

573 
WWUS54 KSJT 200544
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1244 AM CDT WED APR 20 2016

TXC049-059-083-200600-
/O.CON.KSJT.SV.W.0048.000000T0000Z-160420T0600Z/
BROWN TX-COLEMAN TX-CALLAHAN TX-
1244 AM CDT WED APR 20 2016

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 100 AM CDT
FOR NORTHWESTERN BROWN...NORTHEASTERN COLEMAN AND SOUTHEASTERN
CALLAHAN COUNTIES...

AT 1243 AM CDT...A SEVERE THUNDERSTORM WAS LOCATED 8 MILES WEST OF
CROSS PLAINS...OR 17 MILES SOUTH OF BAIRD...MOVING EAST AT 20 MPH.

HAZARD...60 MPH WIND GUSTS AND QUARTER SIZE HAIL. 

SOURCE...RADAR INDICATED. 

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

THIS SEVERE STORM WILL BE NEAR...
  CROSS PLAINS AROUND 100 AM CDT. 

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FOR YOUR PROTECTION MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
BUILDING.

&&

LAT...LON 3198 9910 3211 9944 3225 9937 3223 9912
      3208 9912 3208 9907
TIME...MOT...LOC 0543Z 278DEG 15KT 3215 9931 

HAIL...1.00IN
WIND...60MPH
 
$$

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, 11:31 PM CDT, 41 minutes earlier.

Area forecast discussion, Apr 19, 11:31 PM CDT, 41 minutes before

Area Forecast Discussion
National Weather Service SAN ANGELO TX
1131 PM CDT TUE APR 19 2016

.AVIATION...
/06Z TAFS/

An upper disturbance moving southeast through the area will bring
thunderstorms and showers to KABI and the eastern terminals
through most of the night. A cold front will swing winds to the
north at KABI by 02Z with light and variable winds at the
remaining terminals. MVFR ceilings and occasional IFR ceilings
will continue at all terminals through the morning hours.

15

&&

.PREV DISCUSSION... /issued 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 	 72  58  76  59 /  30  50  10  50
San Angelo 	 74  59  80  61 /  30  40  10  30
Junction 	 75  61  79  61 /  30  40  30  20

&&

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

99/99/99

Hazardous weather outlook, Apr 19, 2:58 PM CDT, 9 hours 14 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, 11:05 PM CDT, 1 hour 7 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

Local storm report, Apr 19, 11:10 PM CDT, 1 hour 2 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1110 PM CDT TUE APR 19 2016

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

1000 PM     HAIL             5 ESE HAMLIN            32.86N 100.05W
04/19/2016  E1.00 INCH       JONES              TX   PUBLIC

            QUARTER SIZE HAIL REPORTED NEAR RADIUM.

&&

EVENT NUMBER SJT1600058

JOHNSON

Local storm report, Apr 19, 11:15 PM CDT, 57 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1115 PM CDT TUE APR 19 2016

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

1115 PM     HAIL             LUEDERS                 32.80N  99.62W
04/19/2016  E1.75 INCH       JONES              TX   LAW ENFORCEMENT

&&

EVENT NUMBER SJT1600059

JOHNSON

Special weather statement, Apr 19, 11:39 PM CDT, 33 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1139 PM CDT TUE APR 19 2016

TXZ128-139-200530-
COLEMAN TX-CALLAHAN TX-
1139 PM CDT TUE APR 19 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTH CENTRAL COLEMAN AND
SOUTHERN CALLAHAN COUNTIES UNTIL 1230 AM CDT...

AT 1139 PM CDT...A STRONG THUNDERSTORM WAS LOCATED NEAR DUDLEY...OR
14 MILES SOUTH OF CLYDE...MOVING EAST AT 30 MPH.

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

THIS STORM WILL REMAIN OVER MAINLY RURAL AREAS OF NORTH CENTRAL
COLEMAN AND SOUTHERN CALLAHAN COUNTIES...INCLUDING THE FOLLOWING
LOCATIONS: US-283 NEAR THE COLEMAN-CALLAHAN COUNTY LINE...ADMIRAL AND
THE INTERSECTION OF US-283 AND HIGHWAY 36.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

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

LAT...LON 3198 9929 3208 9963 3230 9961 3231 9915
TIME...MOT...LOC 0439Z 284DEG 27KT 3220 9956

Special weather statement, Apr 19, 11:45 PM CDT, 27 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1145 PM CDT TUE APR 19 2016

TXZ114-128-200530-
CALLAHAN TX-SHACKELFORD TX-
1145 PM CDT TUE APR 19 2016

...SIGNIFICANT WEATHER ADVISORY FOR NORTHEASTERN CALLAHAN AND
SOUTHEASTERN SHACKELFORD COUNTIES UNTIL 1230 AM CDT...

AT 1145 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 8 MILES WEST OF
MORAN...OR 10 MILES SOUTH OF ALBANY...MOVING EAST AT 30 MPH.

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

THIS STRONG THUNDERSTORM WILL BE NEAR...
  MORAN AROUND 1200 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE MCCARTY LAKE AND US-
283 NEAR THE CALLAHAN-SHACKELFORD COUNTY LINE.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM.
LIGHTNING CAN STRIKE 15 MILES AWAY FROM A THUNDERSTORM. SEEK A SAFE
SHELTER INSIDE A BUILDING OR VEHICLE.

&&

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

LAT...LON 3251 9911 3242 9912 3250 9941 3268 9936
      3264 9909 3252 9909
TIME...MOT...LOC 0445Z 284DEG 26KT 3258 9930

Local storm report, Apr 20, 12:01 AM CDT, 11 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1201 AM CDT WED APR 20 2016

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

1155 PM     HAIL             4 ESE DUDLEY            32.24N  99.54W
04/19/2016  E0.75 INCH       CALLAHAN           TX   TRAINED SPOTTER

            PEA TO PENNY SIZE HAIL OCCURRING ON FM 604 ONE MILE
            SOUTH OF HIGHWAY 36.

&&

EVENT NUMBER SJT1600060

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, 11:09 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford, Throckmorton	15 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, 12:20 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.