Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 63, NWS San Angelo, TX

April 22, 2015Callahan County, Runnels County, Taylor County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at Apr 22, 2015, 8:13 PM CDT for Callahan County, Runnels County, Taylor County, Texas. It was in force for 47 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: Apr 22, 2015, 8:13 PM CDT (01:13 UTC)
Expired: Apr 22, 2015, 9:00 PM CDT
In force: 47 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.75 in
Wind: 60.0 mph

Counties Callahan County, TX, Runnels County, TX, Taylor County, TX

The radar

The Dyess AFB radar (KDYX), 64 km from the middle of the area, began a volume at 01:14 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
Apr 22, 2:56 PM CDT	Tornado Watch	SPC	9 hr

The nearest sounding before it

Midland Regional, TX (KMAF), launched 00:00Z, 1.2 hours before the alert went out and 232 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: 3557 m above ground
0-6 km bulk shear: 53 kt
0-1 km storm-relative helicity: 25 m²/s²
0-3 km storm-relative helicity: -11 m²/s²
Significant tornado parameter: 0.0
Supercell composite: 0.0

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 Apr 22, 6:18 PM CDT, 1 hour 55 minutes earlier.

Area forecast discussion, Apr 22, 6:18 PM CDT, 1 hour 55 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
618 PM CDT Wed Apr 22 2015

.AVIATION...
/00Z TAFS/

Isolated thunderstorms possible at KABI and KBBD this evening,
but potential is too low to include in terminal forecasts. IFR to
MVFR stratus otherwise will spread north this evening and
overnight. Have ceilings lowering to IFR at KJCT...KSOA and KBBD
as stratus was already in IFR range in the Hill Country. Ceilings
rise to VFR from west to east, 15Z through 18Z, as drier southwest
winds develop Thursday morning.

&&

.PREV DISCUSSION... /ISSUED 411 PM CDT Wed Apr 22 2015/

SHORT TERM...
(Tonight and Thursday)

..Slight Risk for severe thunderstorms mainly along and north of
a Sweetwater to Brownwood line this afternoon and evening...

Currently, we have a ridging over TX with a shortwave trough
moving northeast into the area riding along the ridge. Thick upper
level moisture is moving into the area from the southwest on the
subtropical jet stream.

At the surface, mainly southerly flow dominated west central
Texas, aside for areas north of the I-20 corridor where an outflow
boundary has stalled. There is a diffuse area of convergence that
extends roughly from the I-20 corridor in the Big Country northwest
toward the Lubbock area. This area of convergence, along with the
shortwave trough energy moving into the area are expected to
result in isolated to scattered thunderstorm development after 3
PM this afternoon. With MLCAPE values already near 2000 J/kg, and
CIN eroding quickly just north of the I-20 corridor, expect these
thunderstorms to develop in the next couple hours. Model Soundings
show SRH values of around 130m2/s2 increasing to 170m2/s2, along
with with 0-6km shear of greater than 50 knots north of the I-20
corridor this afternoon and evening. All of this would support the
development of supercells initially, with large hail and damaging
winds being the main threats. However, isolated tornadoes will
also be possible. Have kept the mention of severe wording going in
the WX grids for areas with at least a 30% chance of
precipitation. There may also be some development earlier this
afternoon south of Interstate 20, and these storms would be less
organized, but still capable of becoming strong considering the
instability available.

For Thursday, we will again see a chance for thunderstorms, mainly
east of a Sweetwater to Ozona line, and mainly during the
afternoon hours again. We have a Slight Risk of severe
thunderstorms mainly east of a Throckmorton/Coleman/Sonora line.
Models indicate the dryline pushing farther east tomorrow, roughly
to the same line as the Slight Risk area. The thick upper level
moisture is expected to be in place across the entire area
tomorrow, which may limit the eastern push of the dryline during
the afternoon tomorrow. These clouds could also limit instability
and thunderstorm/severe weather threat. However, there will still
be a chance for thunderstorms to develop, so have kept at least a
slight chance for most of the area tomorrow.

20

LONG TERM...
(Thursday night through Wednesday)

With the main focus on the short term this afternoon, this
discussion will be short. The potential for severe thunderstorms
continues into Thursday evening...as the upper through moves
closer to Texas and a surface dryline pushes into our western
counties. Some lingering showers and thunderstorms are possible
for Friday, especially across our southeastern counties. Although
the threat of severe weather will continue into Friday, the threat
will sift to mainly our southeastern counties.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 63  86  65  85  59 /  30  20  30  20   5
San Angelo 	 63  88  64  86  57 /  20  20  30  20   5
Junction 	 66  89  67  86  60 /  20  20  40  50  20

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
NONE.
&&

04

Hazardous weather outlook, Apr 22, 3:56 PM CDT, 4 hours 17 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
356 PM CDT WED APR 22 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-232100-
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-
356 PM CDT WED APR 22 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A RISK OF ISOLATED TO SCATTERED SEVERE THUNDERSTORMS THIS
AFTERNOON AND EVENING...MAINLY ALONG AND EAST OF A LINE FROM
COLORADO CITY...TO ROBERT LEE...TO SAN ANGELO...AND TO SONORA.
ALSO...THERE IS A RISK OF NUMEROUS SEVERE THUNDERSTORMS...MAINLY
ACROSS EASTERN HASKELL COUNTY AND ALL OF THROCKMORTON COUNTY.
ALONG AND NORTH OF A BIG SPRING TO CROSS PLAIN LINE...THE PRIMARY
THREATS ARE TORNADOES...LARGE HAIL UP TO BASEBALL SIZE...DAMAGING
WINDS...AND DEADLY LIGHTNING. ELSEWHERE ACROSS THE THREAT
AREA...THE PRIMARY THREATS ARE LARGE HAIL TO GOLF BALL
SIZE...DAMAGING WINDS...DEADLY LIGHTNING...AND PERHAPS A TORNADO.

.DAYS TWO THROUGH SEVEN...THURSDAY THROUGH TUESDAY

THERE IS A RISK OF ISOLATED TO SCATTERED SEVERE THUNDERSTORMS
LATE THURSDAY AFTERNOON AND THURSDAY NIGHT...MAINLY EAST OF A
LINE FROM STERLING CITY...TO BIG LAKE...TO SHEFFIELD. THE PRIMARY
THREATS ARE LARGE HAIL...DAMAGING WINDS...AND DEADLY LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

WE WILL NEED SPOTTERS THIS AFTERNOON AND EVENING.

In the hours before

Special weather statement, Apr 22, 4:49 PM CDT, 3 hours 24 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
449 PM CDT WED APR 22 2015

TXZ114-222230-
SHACKELFORD TX-
449 PM CDT WED APR 22 2015

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 530 PM CDT FOR
SHACKELFORD COUNTY...

POTENTIAL STORM HAZARDS INCLUDE...
  GUSTY WINDS AND HAIL

AT 447 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES SOUTHEAST
OF MCCARTY LAKE...OR ABOUT 6 MILES SOUTH OF ALBANY...MOVING NORTHEAST
AT 35 MPH.

POTENTIAL STORM IMPACTS INCLUDE...
  LIGHT LOOSE OBJECTS TOSSED...
  HAZARDOUS DRIVING CONDITIONS...

THE STRONG THUNDERSTORM WILL BE NEAR...
  ALBANY BY 455 PM CDT
  IBEX BY 510 PM CDT
  US-180 NEAR THE SHACKELFORD-STEPHENS COUNTY LINE BY 515 PM CDT

LAT...LON 3253 9909 3251 9929 3252 9936 3274 9944
      3289 9909 3288 9909
TIME...MOT...LOC 2149Z 242DEG 29KT 3265 9930

Special weather statement, Apr 22, 5:19 PM CDT, 2 hours 54 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
519 PM CDT WED APR 22 2015

TXZ099-114-222245-
SHACKELFORD TX-THROCKMORTON TX-
519 PM CDT WED APR 22 2015

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 545 PM CDT FOR
SHACKELFORD AND THROCKMORTON COUNTIES...

POTENTIAL STORM HAZARDS INCLUDE...
  DANGEROUS LIGHTNING
  GUSTY WINDS AND HAIL

AT 517 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 5 MILES SOUTH OF
FORT GRIFFIN...OR ABOUT 10 MILES NORTHEAST OF ALBANY...MOVING
NORTHEAST AT 25 MPH.

NUMEROUS CLOUD TO GROUND LIGHTNING STRIKES ARE OCCURRING!

POTENTIAL STORM IMPACTS INCLUDE...
  FIRE IGNITED BY LIGHTNING...
  LOCALIZED SHORT DURATION POWER OUTAGES...
  LIGHTNING MAY CAUSE POSSIBLE INJURY OR DEATH TO PEOPLE REMAINING
 OUTDOORS...
  SOME BROKEN TREE BRANCHES...
  ISOLATED POWER OUTAGES LIKELY...
  A FEW LOOSE OBJECTS TOPPLED...
  HAZARDOUS DRIVING CONDITIONS AND POSSIBLE BLOWING DUST...

MOVE INDOORS IMMEDIATELY! LIGHTNING IS ONE OF NATURES NUMBER ONE
KILLERS. REMEMBER...IF YOU CAN HEAR THUNDER...YOU ARE CLOSE ENOUGH TO
BE STRUCK BY LIGHTNING.

THE STRONG THUNDERSTORM WILL BE NEAR...
  THE INTERSECTION OF US-283 AND RANCH ROAD 209 BY 535 PM CDT
  LUSK AND WOODSON BY 545 PM CDT

LAT...LON 3312 9894 3296 9895 3295 9896 3295 9909
      3280 9909 3276 9918 3290 9935 3317 9901
TIME...MOT...LOC 2219Z 231DEG 21KT 3286 9919

Special weather statement, Apr 22, 6:12 PM CDT, 2 hours 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
612 PM CDT WED APR 22 2015

TXZ049-054-222345-
FISHER TX-NOLAN TX-
612 PM CDT WED APR 22 2015

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 645 PM CDT FOR FISHER
AND NOLAN COUNTIES...

POTENTIAL STORM HAZARDS INCLUDE...
  GUSTY WINDS AND HAIL

AT 609 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 3 MILES NORTH OF
US-84 NEAR THE NOLAN-FISHER COUNTY LINE...OR ABOUT 11 MILES NORTHWEST
OF ROSCOE...MOVING EAST AT 40 MPH.

POTENTIAL STORM IMPACTS INCLUDE...
  SOME BROKEN TREE BRANCHES...
  ISOLATED POWER OUTAGES LIKELY...
  A FEW LOOSE OBJECTS TOPPLED...
  HAZARDOUS DRIVING CONDITIONS AND POSSIBLE BLOWING DUST...

THE STRONG THUNDERSTORM WILL BE NEAR...
  GANNON AND CAPITOLA BY 625 PM CDT
  BUSBY BY 630 PM CDT
  LONGWORTH BY 635 PM CDT

LAT...LON 3248 10029 3250 10067 3265 10067 3266 10066
      3272 10028
TIME...MOT...LOC 2313Z 268DEG 34KT 3256 10061

Local storm report, Apr 22, 6:36 PM CDT, 1 hour 37 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
636 PM CDT WED APR 22 2015

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

0620 PM     TORNADO          6 NNW ROSCOE            32.53N 100.58W
04/22/2015                   FISHER             TX   TRAINED SPOTTER

&&

EVENT NUMBER SJT1500160

DANIELS

Local storm report, Apr 22, 6:46 PM CDT, 1 hour 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
646 PM CDT WED APR 22 2015

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

0643 PM     FUNNEL CLOUD     1 SE GANNON             32.55N 100.47W
04/22/2015                   FISHER             TX   LAW ENFORCEMENT

            A FUNNEL CLOUD WAS REPORTED 1 MILE SOUTHEAST OF GANNON

&&

EVENT NUMBER SJT1500161

DANIELS

Local storm report, Apr 22, 7:23 PM CDT, 50 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
723 PM CDT WED APR 22 2015

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

0723 PM     FUNNEL CLOUD     7 NNW NOLAN             32.36N 100.31W
04/22/2015                   NOLAN              TX   PUBLIC

&&

EVENT NUMBER SJT1500162

JD

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 22, 7:18 PM CDT	Tornado Warning	SJT	Nolan, Taylor	27 min
Apr 22, 7:44 PM CDT	Tornado Warning	SJT	Nolan, Taylor	31 min
Apr 22, 9:01 PM CDT	Special Weather Statement	SJT	Taylor	29 min
Apr 22, 9:31 PM CDT	Special Weather Statement	SJT	Coleman	29 min
Apr 22, 10:06 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	39 min
Apr 22, 10:16 PM CDT	Tornado Warning	SJT	Haskell, Throckmorton	29 min
Apr 22, 10:47 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Throckmorton	43 min
Apr 22, 10:51 PM CDT	Tornado Warning	SJT	Haskell, Throckmorton	24 min
Apr 22, 11:05 PM CDT	Severe Thunderstorm Warning	SJT	Haskell	40 min
Apr 22, 11:09 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	51 min
Apr 22, 11:15 PM CDT	Tornado Warning	SJT	Haskell, Throckmorton	30 min
Apr 22, 11:45 PM CDT	Severe Thunderstorm Warning	SJT	Haskell, Jones, Shackelford, Throckmorton	45 min
Apr 23, 12:31 AM CDT	Special Weather Statement	SJT	Shackelford	29 min
Apr 23, 4:39 PM CDT	Special Weather Statement	SJT	Fisher	36 min

Nearby

Severe Thunderstorm Warnings in Texas, 2015 Every severe thunderstorm warning 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.