Alert archive / Texas / Severe Thunderstorm Warnings in 2016

Severe Thunderstorm Warning 161, NWS San Angelo, TX

May 12, 2016Callahan County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 12, 2016, 2:24 AM CDT for Callahan County, Texas. It was in force for 36 min. No storm report in the archive falls inside the area while it was in force.

The area

The counties it named.

The facts

Issued: May 12, 2016, 2:24 AM CDT (07:24 UTC)
Expired: May 12, 2016, 3:00 AM CDT
In force: 36 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

County Callahan County, TX

The radar

The Dyess AFB radar (KDYX), 29 km from the middle of the area, began a volume at 07:27 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.

The watch it was issued in

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

Issued	Product	Office	Lasted
May 11, 10:55 PM CDT	Severe Thunderstorm Watch	SPC	6 hr

The nearest sounding before it

Fort Worth, TX (KFWD), launched 00:00Z, 7.4 hours before the alert went out and 204 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: 2369 J/kg
Mixed-layer CIN: -49 J/kg
Mixed-layer LCL: 1270 m above ground
0-6 km bulk shear: 25 kt
0-1 km storm-relative helicity: 30 m²/s²
0-3 km storm-relative helicity: 117 m²/s²
Significant tornado parameter: 0.4
Supercell composite: 5.1

Open this sounding in Storm Lab

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 May 12, 12:01 AM CDT, 2 hours 23 minutes earlier.

Area forecast discussion, May 12, 12:01 AM CDT, 2 hours 23 minutes before

Area Forecast Discussion
National Weather Service SAN ANGELO TX
1201 AM CDT THU MAY 12 2016

.AVIATION...
/06Z TAFS/

Scattered thunderstorms will continue across the Big Country and
further south through the early morning hours according to high
res models. The KABI terminal may be affected during the next few
hours, as storms are moving through Abilene. Also, thunderstorms
may make it into the KSJT terminal between 09-13Z. Otherwise, have
a VCTS at the the southern terminals. Stratus will develop by
Thursday morning and have MVFR ceilings by 08Z to 11Z.

&&

.PREV DISCUSSION... /issued 705 PM CDT WED MAY 11 2016/

AVIATION...
/00Z TAFS/

Thunderstorms will continue across much of the Big Country this
evening. The KABI terminal may be affected during the next few
hours, but it looks like most of the convection will remain north
and east of KABI. Additional thunderstorms are possible later
tonight through the early morning at least indicated high res
models. Going with TEMPO groups for TSRA at KABI/KSJT for a few
hours. Otherwise, stratus will develop by Thursday morning and
have MVFR ceilings by 08Z to 11Z.

PREV DISCUSSION... /issued 313 PM CDT WED MAY 11 2016/

SHORT TERM...
(Tonight and Thursday)

Weak front has sagged into the northern Big Country this afternoon,
with visible satellite showing the boundary draped across Haskell
and Throckmorton Counties. Much drier behind the boundary, but ahead
of the boundary low level instability is increasing with CAPE values
above 3000 j/kg. Having said that, there has been healthy inhibition
in place as well so far today. Not a lot upper support, so will
depend on additional heating and convergence along the front to
initiate convection. Will likely see the first storms develop later
this afternoon across the Big Country near the frontal boundary, and
perhaps farther south along an outflow boundary from last nights
convection that looks to be laying north of Coleman and Brownwood.
As inhibition continues to weaken, storms will begin to increase in
coverage.

Front is expected to stall, perhaps even push back north for a
little while, and then start to move back south by around midnight.
Models show more widespread convection developing along the front at
this point and pushing south. Highest POP's will be across the Big
Country overnight and then pushing south across the remainder of
West Central Texas late tonight and into the day on Thursday. Chance
POPS area wide on Thursday. Increased cloud cover and cooler air
mass will lead to afternoon highs in the 70s and 80s.

LONG TERM...
(Thursday night and Wednesday)

Rain chances will continue across much of West Central Texas through
the extended forecast. A cold front that will move through much of
the area Thursday, then stall somewhere across our southern
counties Thursday night, aiding in continued shower and
thunderstorm development. Exactly where this front stalls will
dictate where the best PoPs will reside. At this point, the best
PoPs look to be across our southern counties, with rain chances
decreasing as you head north toward the Big Country. A few
lingering storms will be possible Friday, especially across the
Interstate 10 corridor. Highs on Friday will be near to slightly
below seasonal normals, in the low to mid 80s.

The next cold front will approach the northern Big Country Saturday
morning, with an increasing chance of showers and thunderstorms.
Some timing differences continue with this feature, but this front
is forecast to slowly move through the area Saturday into Saturday
night. This in combination with intermittent disturbances moving
across the region in the southwest flow aloft, will bring a chance
of showers and thunderstorms to much of the forecast area. Highs on
Saturday will be mostly in the mid to upper 80s, while highs on
Sunday will be in the mid 70s to lower 80s.

At least scattered showers and thunderstorms will be possible for
the first part of next week, as the region remains in southwest flow
aloft. High will mainly be in the 80s with overnight lows mainly in
the 60s.

Daniels

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 64  75  60  82 /  70  40  20  10
San Angelo 	 67  80  63  85 /  40  50  30  20
Junction 	 71  83  64  85 /  30  40  40  20

&&

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

99/99/21

Hazardous weather outlook, May 11, 3:04 PM CDT, 11 hours 20 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
304 PM CDT WED MAY 11 2016

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-122015-
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-
304 PM CDT WED MAY 11 2016

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

SCATTERED THUNDERSTORMS...SOME OF WHICH WILL BE STRONG TO SEVERE
...WILL DEVELOP ACROSS WEST CENTRAL TEXAS LATE THIS AFTERNOON AND
TONIGHT. THE STORMS WILL BE MOST LIKELY ALONG AND NORTH OF
INTERSTATE 20 FROM SWEETWATER TO ABILENE. LARGE DAMAGING
HAIL...DAMAGING WINDS...AND DEADLY LIGHTNING WILL BE THE PRIMARY
SEVERE WEATHER THREATS.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

SCATTERED THUNDERSTORMS WILL CONTINUE ON THURSDAY AND
FRIDAY...AND THEN BECOME MORE WIDESPREAD OVER THE WEEKEND ONCE
AGAIN. LARGE HAIL AND DAMAGING WINDS WILL AGAIN BE POSSIBLE.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION MAY BE REQUESTED LATER TODAY.

In the hours before

Local storm report, May 12, 12:44 AM CDT, 1 hour 40 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1244 AM CDT THU MAY 12 2016

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

1210 AM     HAIL             2 WNW ABILENE           32.47N  99.76W
05/12/2016  E1.50 INCH       TAYLOR             TX   PUBLIC

            N 14TH AND WILLIS

&&

EVENT NUMBER SJT1600172

JOHNSON

Local storm report, May 12, 12:52 AM CDT, 1 hour 32 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1252 AM CDT THU MAY 12 2016

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

1251 AM     HAIL             3 WSW ABILENE           32.43N  99.78W
05/12/2016  E1.75 INCH       TAYLOR             TX   BROADCAST MEDIA

            AT KRBC STUDIO

&&

EVENT NUMBER SJT1600173

JOHNSON

Local storm report, May 12, 1:10 AM CDT, 1 hour 14 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
110 AM CDT THU MAY 12 2016

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

1245 AM     HAIL             CLYDE                   32.40N  99.50W
05/12/2016  E1.75 INCH       CALLAHAN           TX   LAW ENFORCEMENT

&&

EVENT NUMBER SJT1600174

JOHNSON

Local storm report, May 12, 1:21 AM CDT, 1 hour 3 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
121 AM CDT THU MAY 12 2016

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

0100 AM     HAIL             4 E DYESS AFB           32.42N  99.80W
05/12/2016  E1.00 INCH       TAYLOR             TX   TRAINED SPOTTER

&&

EVENT NUMBER SJT1600175

JOHNSON

Local storm report, May 12, 1:28 AM CDT, 56 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
128 AM CDT THU MAY 12 2016

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

0112 AM     HAIL             VIEW                    32.34N  99.88W
05/12/2016  E1.50 INCH       TAYLOR             TX   PUBLIC

&&

EVENT NUMBER SJT1600176

JOHNSON

Special weather statement, May 12, 2:06 AM CDT, 18 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
206 AM CDT THU MAY 12 2016

TXZ049-098-113-120745-
JONES TX-FISHER TX-HASKELL TX-
206 AM CDT THU MAY 12 2016

...SIGNIFICANT WEATHER ADVISORY FOR SOUTHWESTERN HASKELL...
NORTHEASTERN FISHER AND NORTHWESTERN JONES COUNTIES UNTIL 245 AM
CDT...

AT 205 AM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER HAMLIN...
MOVING NORTHEAST AT 30 MPH.

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

THIS STRONG THUNDERSTORM WILL BE NEAR...
  SAGERTON AROUND 230 AM CDT.

OTHER LOCATIONS IMPACTED BY THIS STORM INCLUDE THE INTERSECTION OF
US-180 AND RANCH ROAD 126...TUXEDO AND HITSON.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 500 AM CDT FOR
WEST CENTRAL TEXAS.

LAT...LON 3306 9977 3268 10010 3278 10032 3296 10026
      3296 9999 3313 9999
TIME...MOT...LOC 0705Z 230DEG 35KT 3285 10010

The office that day

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

Issued	Product	Office	Counties	Lasted
May 11, 7:06 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Shackelford	39 min
May 11, 7:17 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Taylor	43 min
May 11, 7:18 PM CDT	Severe Thunderstorm Warning	SJT	Coleman	42 min
May 11, 7:36 PM CDT	Severe Thunderstorm Warning	SJT	Jones	39 min
May 11, 7:58 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman	47 min
May 11, 7:59 PM CDT	Areal Flood Advisory	SJT	Callahan, Coleman	3 hr
May 11, 8:04 PM CDT	Special Weather Statement	SJT	Jones	26 min
May 11, 8:33 PM CDT	Special Weather Statement	SJT	Jones	42 min
May 11, 8:38 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman	52 min
May 11, 8:46 PM CDT	Flash Flood Warning	SJT	Brown, Callahan, Coleman	3 hr
May 11, 8:56 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Runnels	49 min
May 11, 9:28 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman	47 min
May 11, 9:44 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Coleman, Taylor	46 min
May 11, 10:12 PM CDT	Special Weather Statement	SJT	Runnels	33 min
May 11, 10:24 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman	66 min
May 11, 10:27 PM CDT	Severe Thunderstorm Warning	SJT	Jones, Shackelford	48 min
May 11, 11:00 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	45 min
May 11, 11:30 PM CDT	Special Weather Statement	SJT	Brown	45 min
May 11, 11:39 PM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones, Taylor	51 min
May 12, 12:19 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford, Taylor	56 min
May 12, 12:32 AM CDT	Areal Flood Advisory	SJT	Callahan, Jones, Shackelford, Taylor	3 hr
May 12, 1:02 AM CDT	Severe Thunderstorm Warning	SJT	Taylor	43 min
May 12, 1:05 AM CDT	Severe Thunderstorm Warning	SJT	Callahan	40 min
May 12, 1:37 AM CDT	Severe Thunderstorm Warning	SJT	Taylor	38 min
May 12, 1:39 AM CDT	Severe Thunderstorm Warning	SJT	Callahan	51 min
May 12, 2:06 AM CDT	Special Weather Statement	SJT	Jones	39 min
May 12, 2:16 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Haskell, Jones	59 min
May 12, 3:02 AM CDT	Flash Flood Warning	SJT	Fisher, Haskell, Jones	3 hr
May 12, 3:19 AM CDT	Special Weather Statement	SJT	Jones	56 min
May 12, 3:23 AM CDT	Special Weather Statement	SJT	Brown	52 min
May 12, 3:47 AM CDT	Severe Thunderstorm Warning	SJT	Jones	33 min
May 12, 4:05 AM CDT	Special Weather Statement	SJT	Fisher	55 min
May 12, 4:15 AM CDT	Special Weather Statement	SJT	Jones	60 min
May 12, 4:44 AM CDT	Flash Flood Warning	SJT	Callahan, Jones, Shackelford, Taylor	5 hr
May 12, 5:01 AM CDT	Severe Thunderstorm Warning	SJT	Callahan	44 min
May 12, 5:11 AM CDT	Special Weather Statement	SJT	Nolan	49 min
May 12, 5:48 AM CDT	Severe Thunderstorm Warning	SJT	Callahan	42 min
May 12, 6:10 AM CDT	Severe Thunderstorm Warning	SJT	Brown	50 min
May 12, 6:58 AM CDT	Special Weather Statement	SJT	Brown	47 min
May 12, 9:11 AM CDT	Special Weather Statement	SJT	Llano	34 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.