Alert archive / Texas / Severe Thunderstorm Warnings in 2015

Severe Thunderstorm Warning 247, NWS San Angelo, TX

May 25, 2015McCulloch County, Mason County, San Saba County, Texas

NWS San Angelo, TX issued this severe thunderstorm warning at May 25, 2015, 11:42 AM CDT for McCulloch County, Mason County, San Saba County, Texas. It was in force for 17 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 25, 2015, 11:42 AM CDT (16:42 UTC)
Expired: May 25, 2015, 11:59 AM CDT
In force: 17 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Hail: 1.0 in
Wind: 60.0 mph

Counties Mason County, TX, McCulloch County, TX, San Saba County, TX

The radar

The San Angelo radar (KSJT), 135 km from the middle of the area, began a volume at 16:45 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 25, 6:45 AM CDT	Severe Thunderstorm Watch	SPC	6 hr
May 25, 10:54 AM CDT	Tornado Watch	SPC	7 hr

The nearest sounding before it

Del Rio, TX (KDRT), launched 12:00Z, 4.7 hours before the alert went out and 247 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: 2864 J/kg
Mixed-layer CIN: -27 J/kg
Mixed-layer LCL: 649 m above ground
0-6 km bulk shear: 56 kt
0-1 km storm-relative helicity: 145 m²/s²
0-3 km storm-relative helicity: 277 m²/s²
Significant tornado parameter: 4.5
Supercell composite: 17.2

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 25, 6:22 AM CDT, 5 hours 20 minutes earlier.

Area forecast discussion, May 25, 6:22 AM CDT, 5 hours 20 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
622 AM CDT Mon May 25 2015

.AVIATION...
/12Z TAFS/

Isolated to scattered showers and thunderstorms will develop and
move over West Central Texas TAF sites this morning. The best
potential is over KABI 15-18Z. Have VCTS at most sites this
morning...with KABI down to 2 miles in moderate rain 15-18Z. MVFR
stratus should rise to VFR at most sites by 18Z, persisting until
21Z at KABI. MVFR stratus otherwise returns after 6Z tonight from
south to north.

&&

.PREV DISCUSSION... /ISSUED 432 AM CDT Mon May 25 2015/

SHORT TERM...
(Today and Tonight )

..Heavy rainfall and severe storms possible today beginning early
this morning...

A strong upper trough will pass trough West Central Texas this
morning, with strong lift associated with it. The atmosphere was
already unstable with SPC RAP most unstable CAPES of 2000-3000 J/KG.
0-6KM bulk shears were 40-50 KTS. Large hail and damaging winds are
possible, even the potential for a tornado. The main threat, however
will be locally heavy rainfall of 1 to 3 inches, as precipitable
water increases to 1.0-1.5 inches. Heavy rainfall on already
saturated soils will have the potential for flash flooding. A flash
flood watch is in effect through 4 PM CDT.

Most of the high resolution models develop a band of thunderstorms
over I-20 corridor...from Sterling City to Brownwood this morning,
mainly after 7 AM. Another second area of storms may develop east
off the mountains of Mexico... possibly affecting the Junction to
Mason to San Saba areas. Scattered showers and thunderstorms may
continue in the Big Country in the afternoon with more isolated
storms farther south.  While the Big Country and southeast sections
will likely have highest potential for thunderstorms, just about
anywhere in West Central Texas will be at risk for severe storms
today with the strong instabilities present.

Kept a slight chance of showers and thunderstorms over eastern
sections tonight. Most of this will be in the evening hours.

04

LONG TERM...
(Tuesday-Wednesday)
Dryline thunderstorms will be possible Tuesday and Wednesday during
the late afternoon and evening as temperatures climb into the 90s.
Moderate to high CAPE values and a low shear storm environment will
provide the threat for isolated strong updrafts that could result in
a few storms producing large hail and damaging winds.

(Thursday-Friday)
As a broad upper level trough of low pressure moves into Northern
Mexico, it will result in dryline afternoon and evening
thunderstorms each day.  A cold front moving south through the
Central Plains could send an outflow boundary into West Central
Texas on Friday, providing another focus for thunderstorm development.
Max temperatures will be a little lower because of more cloud cover.

(Saturday-Sunday)
The previously mentioned cold front meandering across the region could
bring another threat for storms over the weekend with temperatures
in the lower 80s.

26

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 80  63  90  69  89 /  70  10  20  10  20
San Angelo 	 85  63  93  69  91 /  50  10  20  10  20
Junction 	 84  65  91  70  89 /  70  20  20  10  20

&&

.SJT WATCHES/WARNINGS/ADVISORIES...
FLASH FLOOD WATCH until 4 PM CDT this afternoon FOR THE
FOLLOWING ZONES: Brown...Callahan...Coke...Coleman...Concho...
Crockett...Fisher...Haskell...Irion...Jones...Kimble...Mason...
McCulloch...Menard...Nolan...Runnels...San Saba...Schleicher...
Shackelford...Sterling...Sutton...Taylor...Throckmorton...Tom
Green.

&&

99/99/04

Hazardous weather outlook, May 25, 8:43 AM CDT, 2 hours 59 minutes before

HAZARDOUS WEATHER OUTLOOK...UPDATED
NATIONAL WEATHER SERVICE SAN ANGELO TX
843 AM CDT MON MAY 25 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-261345-
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-
843 AM CDT MON MAY 25 2015

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

.DAY ONE...TODAY AND TONIGHT

THERE IS A RISK OF SEVERE THUNDERSTORMS ACROSS WEST CENTRAL TEXAS
TODAY. THE MOST SIGNIFICANT SEVERE WEATHER WILL BE ALONG AND EAST
OF A HASKELL TO ABILENE TO BROWNWOOD LINE. THE MAIN THREATS ACROSS
THIS AREA WILL BE LARGE HAIL THE SIZE OF GOLF BALLS...DAMAGING
WINDS IN EXCESS OF 70 MPH AND A FEW TORNADOES. LOCALLY HEAVY RAINFALL
AMOUNTS MAY ALSO PRODUCE FLASH FLOODING ON ALREADY SATURATED
SOILS.

.DAYS TWO THROUGH SEVEN...TUESDAY THROUGH SUNDAY

ADDITIONAL STRONG TO SEVERE STORMS WILL BE POSSIBLE THROUGH THE
REST OF WEEK. THE MAIN THREATS WILL CONTINUE TO BE LARGE HAIL AND
DAMAGING WINDS. LOCALLY HEAVY RAINFALL MAY ALSO PRODUCE FLASH
FLOODING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL BE NEEDED TODAY.

In the hours before

Local storm report, May 25, 10:50 AM CDT, 52 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1050 AM CDT MON MAY 25 2015

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

1015 AM     TSTM WND GST     WINGATE                 32.04N 100.11W
05/25/2015  M58 MPH          RUNNELS            TX   CO-OP OBSERVER

&&

EVENT NUMBER SJT1500421

JOHNSON

Local storm report, May 25, 11:08 AM CDT, 34 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1108 AM CDT MON MAY 25 2015

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

1050 AM     TSTM WND DMG     ANSON                   32.76N  99.90W
05/25/2015                   JONES              TX   AMATEUR RADIO

            UTILITY POLE DOWN NEAR CITY HALL

&&

EVENT NUMBER SJT1500422

JOHNSON

Special weather statement, May 25, 11:11 AM CDT, 31 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1111 AM CDT MON MAY 25 2015

TXZ049-054-113-127-251730-
FISHER TX-JONES TX-NOLAN TX-TAYLOR TX-
1111 AM CDT MON MAY 25 2015

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 1230 PM CDT FOR
FISHER...JONES...NOLAN AND TAYLOR COUNTIES...

POTENTIAL STORM HAZARDS INCLUDE...
  GUSTY WINDS

AT 1106 AM CDT...GUSTY WINDS OF 45 TO 50 MPH ARE OCCURRING IN THE
WAKE OF A LINE OF SEVERE THUNDERSTORMS ACROSS FISHER COUNTY. THESE
WINDS WILL CONTINUE THROUGH AT LEAST NOON...PERHAPS AS LONG AS 1230
PM...AS THEY SPREAD EAST AND SOUTHEAST ACROSS THE BIG COUNTRY.

POTENTIAL STORM IMPACTS INCLUDE...
  SOME BROKEN SMALL TREE BRANCHES...
  DEADLY LIGHTNING...
  LIGHT LOOSE OBJECTS TOPPLED...
  DANGEROUS DRIVING CONDITIONS...
  HAIL AND WIND MAY COMBINE TO PRODUCE MINOR INJURY TO PLANTS AND
  MINOR DAMAGE TO EASILY BREAKABLE OBJECTS...

THIS INCLUDES INTERSTATE 20 BETWEEN MILE MARKERS 232 AND 270.

LAT...LON 3296 9988 3262 9984 3208 10000 3209 10065
      3253 10051 3296 10065 3297 10021
TIME...MOT...LOC 1608Z 205DEG 33KT 3265 10025

Local storm report, May 25, 11:24 AM CDT, 18 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
1124 AM CDT MON MAY 25 2015

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

1123 AM     HAIL             1 S WINTERS             31.95N  99.93W
05/25/2015  E0.88 INCH       RUNNELS            TX   TRAINED SPOTTER

&&

EVENT NUMBER SJT1500423

DOLL

Local storm report, May 25, 11:41 AM CDT, 1 minute before

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Local storm report, May 25, 11:42 AM CDT, 0 minutes before

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The office that day

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

Issued	Product	Office	Counties	Lasted
May 25, 3:59 AM CDT	Flash Flood Watch	SJT	Brown, Callahan, Coke, Coleman, Concho, Crockett and 18 more	12 hr
May 25, 8:22 AM CDT	Severe Thunderstorm Warning	SJT	Kimble	38 min
May 25, 8:25 AM CDT	Special Weather Statement	SJT	Fisher	35 min
May 25, 8:43 AM CDT	Special Weather Statement	SJT	Nolan	32 min
May 25, 8:58 AM CDT	Special Weather Statement	SJT	Fisher, Nolan	47 min
May 25, 9:00 AM CDT	Special Weather Statement	SJT	Sterling	45 min
May 25, 9:12 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Nolan	48 min
May 25, 9:16 AM CDT	Severe Thunderstorm Warning	SJT	Irion, Sterling, Tom Green	44 min
May 25, 9:43 AM CDT	Severe Thunderstorm Warning	SJT	Coke, Sterling, Tom Green	47 min
May 25, 9:51 AM CDT	Tornado Warning	SJT	Fisher	24 min
May 25, 9:55 AM CDT	Areal Flood Advisory	SJT	Fisher, Nolan	2 hr
May 25, 9:58 AM CDT	Severe Thunderstorm Warning	SJT	Fisher, Jones, Nolan, Taylor	47 min
May 25, 10:07 AM CDT	Severe Thunderstorm Warning	SJT	Mason	38 min
May 25, 10:13 AM CDT	Severe Thunderstorm Warning	SJT	Kimble, Mason	47 min
May 25, 10:17 AM CDT	Tornado Warning	SJT	Fisher, Jones	28 min
May 25, 10:29 AM CDT	Special Weather Statement	SJT	Runnels	31 min
May 25, 10:38 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Haskell, Jones, Shackelford, Taylor, Throckmorton	52 min
May 25, 10:46 AM CDT	Severe Thunderstorm Warning	SJT	Coleman, Runnels	44 min
May 25, 10:50 AM CDT	Areal Flood Advisory	SJT	Jones, Taylor	115 min
May 25, 10:53 AM CDT	Severe Thunderstorm Warning	SJT	Kimble, Mason	52 min
May 25, 11:11 AM CDT	Special Weather Statement	SJT	Fisher, Jones, Nolan	79 min
May 25, 11:17 AM CDT	Severe Thunderstorm Warning	SJT	Callahan, Haskell, Shackelford, Throckmorton	58 min
May 25, 11:23 AM CDT	Severe Thunderstorm Warning	SJT	Brown, Coleman, Runnels	67 min
May 25, 11:33 AM CDT	Flash Flood Warning	SJT	Taylor	117 min
May 25, 11:58 AM CDT	Severe Thunderstorm Warning	SJT	San Saba	47 min
May 25, 12:05 PM CDT	Special Weather Statement	SJT	Brown, Coleman, Concho, McCulloch	40 min
May 25, 12:09 PM CDT	Areal Flood Advisory	SJT	Brown, Coleman, Concho	111 min
May 25, 12:13 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	32 min
May 25, 12:17 PM CDT	Special Weather Statement	SJT	Menard	28 min
May 25, 12:43 PM CDT	Special Weather Statement	SJT	Brown, McCulloch, Menard	32 min
May 25, 1:13 PM CDT	Special Weather Statement	SJT	San Saba	32 min
May 25, 1:26 PM CDT	Areal Flood Advisory	SJT	San Saba	2 hr
May 25, 1:47 PM CDT	Special Weather Statement	SJT	San Saba	28 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.