Alert archive / Texas / Tornado Warnings in 2015

Tornado Warning 1, NWS San Angelo, TX

April 18, 2015Kimble County, Mason County, Menard County, Texas

NWS San Angelo, TX issued this tornado warning at Apr 18, 2015, 3:38 PM CDT for Kimble County, Mason County, Menard County, Texas. It was in force for 27 min. 3 reports came from inside the area while it was in force.

The area

The outline as issued, with what was reported inside it.

The facts

Issued: Apr 18, 2015, 3:38 PM CDT (20:38 UTC)
Expired: Apr 18, 2015, 4:05 PM CDT
In force: 27 min
Issued by: NWS San Angelo, TX
Area: Storm-based polygon
Tornado: Radar indicated
Hail: 1.75 in

Counties Kimble County, TX, Mason County, TX, Menard County, TX

The radar

The San Angelo radar (KSJT), 124 km from the middle of the area, began a volume at 20:40 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.

What was reported inside it

Time	Report	Where	Remark
Apr 18, 3:38 PM CDT	TORNADO	1 W London, TX	TORNADO BROKE A FEW MESQUITE TREE LIMBS 1 MILE WEST OF LONDON ON FM 370.
Apr 18, 3:38 PM CDT	TORNADO	1 W London, TX	TORNADO BROKE A FEW MESQUITE TREE LIMBS I MILE WEST OF LONDON ON FM 370.
Apr 18, 3:39 PM CDT	TORNADO	3 Nnw London, TX

Local storm reports filed while the alert was in force, from inside its polygon or its counties.

Did it verify

Verified. The Iowa Environmental Mesonet's Cow matched 3 storm reports to this tornado warning; the first came 0 minutes after it went out.

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 18, 2:13 PM CDT	Severe Thunderstorm Watch	SPC	8 hr

The nearest sounding before it

Del Rio, TX (KDLF), launched 12:00Z, 8.6 hours before the alert went out and 202 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: 668 J/kg
Mixed-layer CIN: -134 J/kg
Mixed-layer LCL: 705 m above ground
0-6 km bulk shear: 35 kt
0-1 km storm-relative helicity: -48 m²/s²
0-3 km storm-relative helicity: 81 m²/s²
Significant tornado parameter: -0.0
Supercell composite: -0.4

Open this sounding in Storm Lab

The text

As transmitted, in the capitals the NWS used until 2016.

244 
WFUS54 KSJT 182038
TORSJT
TXC267-319-327-182115-
/O.NEW.KSJT.TO.W.0001.150418T2038Z-150418T2115Z/

BULLETIN - EAS ACTIVATION REQUESTED
TORNADO WARNING
NATIONAL WEATHER SERVICE SAN ANGELO TX
338 PM CDT SAT APR 18 2015

THE NATIONAL WEATHER SERVICE IN SAN ANGELO HAS ISSUED A

* TORNADO WARNING FOR...
  NORTHEASTERN KIMBLE COUNTY IN WEST CENTRAL TEXAS...
  WEST CENTRAL MASON COUNTY IN WEST CENTRAL TEXAS...
  SOUTHEASTERN MENARD COUNTY IN WEST CENTRAL TEXAS...

* UNTIL 415 PM CDT

* AT 337 PM CDT...A SEVERE THUNDERSTORM CAPABLE OF PRODUCING A
  TORNADO WAS LOCATED NEAR SALINE...AND MOVING NORTHEAST AT 20 MPH.

  HAZARD...TORNADO...GOLF BALL SIZE HAIL AND 70 MPH WIND GUSTS.

  SOURCE...RADAR INDICATED ROTATION.

  IMPACT...FLYING DEBRIS WILL BE DANGEROUS TO THOSE CAUGHT WITHOUT
           SHELTER. MOBILE HOMES WILL BE DAMAGED OR DESTROYED. DAMAGE
           TO ROOFS...WINDOWS AND VEHICLES WILL OCCUR. TREE DAMAGE IS
           LIKELY.

* THIS DANGEROUS STORM WILL BE NEAR...
  LONG MOUNTAIN AROUND 350 PM CDT.
  STREETER AROUND 405 PM CDT.
  GRIT AROUND 415 PM CDT.

OTHER LOCATIONS IN THE WARNING INCLUDE ERNA.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

TAKE COVER NOW. MOVE TO AN INTERIOR ROOM ON THE LOWEST FLOOR OF A
STURDY BUILDING. AVOID WINDOWS. IF IN A MOBILE HOME...A VEHICLE OR
OUTDOORS...MOVE TO THE CLOSEST SUBSTANTIAL SHELTER AND PROTECT
YOURSELF FROM FLYING DEBRIS.

&&

LAT...LON 3063 9959 3072 9962 3084 9932 3081 9928
      3069 9922
TIME...MOT...LOC 2038Z 245DEG 18KT 3071 9953

TORNADO...RADAR INDICATED
HAIL...1.75IN

$$

1 follow-up statement

866 
WWUS54 KSJT 182105
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
405 PM CDT SAT APR 18 2015

TXC267-319-327-182114-
/O.CAN.KSJT.TO.W.0001.000000T0000Z-150418T2115Z/
KIMBLE TX-MASON TX-MENARD TX-
405 PM CDT SAT APR 18 2015

...THE TORNADO WARNING FOR SOUTHEASTERN MENARD...WEST CENTRAL MASON
AND NORTHEASTERN KIMBLE COUNTIES IS CANCELLED...

THE STORM WHICH PROMPTED THE WARNING HAS WEAKENED AND MOVED OUT OF 
THE WARNED AREA.

LAT...LON 3063 9959 3072 9962 3084 9932 3081 9928
      3069 9922
TIME...MOT...LOC 2104Z 245DEG 18KT 3076 9939

$$

What forecasters said that day

The local office's own words before this tornado 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 tornado warning went out at Apr 18, 2:27 PM CDT, 1 hour 11 minutes earlier.

Area forecast discussion, Apr 18, 2:27 PM CDT, 1 hour 11 minutes before

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
227 PM CDT Sat Apr 18 2015

.UPDATE...

The Storm Prediction Center has just issued Severe Thunderstorm
Watch number 72, and it covers all of West Central Texas. So, we
just sent an update to our Zone forecast to include a watch
headline for all of our counties.

&&

.PREV DISCUSSION... /ISSUED 1249 PM CDT Sat Apr 18 2015/

AVIATION...
/18Z TAFS/

Expect VFR conditions to dominate for the next 24 hours and
thunderstorms this afternoon and evening. Thunderstorms will
likely impact Sonora, Brady, and Junction this afternoon and
evening.

PREV DISCUSSION... /ISSUED 631 AM CDT Sat Apr 18 2015/

AVIATION...
/12Z TAFS/
Two upper level disturbance will bring a round of storms to most
TAF sites this morning and again this afternoon. Latest radar data
is showing an area of storms moving east and northeast towards
KSOA and KJCT and could reach those sites between 12Z and 15Z.
Main impacts will be gusty winds, brief heavy rain, lightning and
low visibilities. The IFR Cigs should gradually improve to VFR shortly
after 15Z. The next round of storms may form along the dryline
after 18Z at KSOA, KBBD and KJCT. A few of these may become severe
and produce large hail, damaging winds and very heavy rainfall.

PREV DISCUSSION... /ISSUED 420 AM CDT Sat Apr 18 2015/

SHORT TERM...
(Today and Tonight)

There is a threat for severe thunderstorms across the eastern half
of West Central Texas today as an upper level trough associated with
the upper low near the Four Corners moves across the region.  The
main threats will be large hail and damaging winds.  SPC has placed
much of the area east of the dryline in a slight risk for severe
thunderstorms today.

Latest radar is showing showers developing across the mountains in
northern Mexico, south of Sanderson, in association with the next
approaching shortwave as can be seen on water vapor satellite
imagery.  This could bring a round of showers and thunderstorms to
West Central Texas this morning before the main upper trough moves
across later this afternoon.

The dryline is forecast to move east today as the RUC model progs
this front from Haskell to just east of San Angelo to Sonora by
early evening.  This dryline should trigger scattered thunderstorms
this afternoon as the following ingredients come together: dewpoints
ranging from the upper 50s to the lower 60s, moderate 0-6km shear,
MU CAPE Values 1500-2000 J/KG, a weak capping inversion, approaching
upper trough and a right rear entrance region of the southern stream
upper level jet flowing across the area.  These parameters should
set the stage for the development of a few supercells today,
resulting in large hail and damaging winds.  These storms may
continue into the early evening hours before dissipating.

Highest Pops were placed across the Northwest Hill Country extending
north to Brownwood. Went closer to the warmer MAV MOS for
temps as the dry warm air invades the western part of the region
today.

26

LONG TERM...
(Sunday through Friday)

Cold front will move through Sunday. Dry southwest to west winds
ahead of the front will not only preclude rain chances, but also
give a boost to temperatures, being downslope compression. Still,
cold advection will bring cooler temperatures Sunday, with highs
in the 70s.

Isolated dryline thunderstorms possible mid and late week. West
Central Texas will be under a broad upper ridge, so widespread
showers or thunderstorms not expected. Could see a few highs
approach 90s, especially Wednesday and Thursday.

&&

.PRELIMINARY POINT TEMPS/POPS...
Abilene 	 54  77  46  72  51 /  20   5   5   5   5
San Angelo 	 54  82  48  74  53 /  10   5   5   5  10
Junction 	 55  85  50  74  54 /  30   5   5   5  10

&&

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

Hazardous weather outlook, Apr 18, 12:28 PM CDT, 3 hours 10 minutes before

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
1228 PM CDT SAT APR 18 2015

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-191730-
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-
1228 PM CDT SAT APR 18 2015

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THERE IS A MODERATE RISK OF SEVERE THUNDERSTORMS ALONG AND EAST
OF A LINE FROM HASKELL...TO SAN ANGELO...TO OZONA...THROUGH THIS
EVENING. THE PRIMARY HAZARDS ARE LARGE HAIL...DAMAGING WINDS...AND
DEADLY LIGHTNING. ALTHOUGH THE THREAT IS LOWER...A TORNADO IS
POSSIBLE.

.DAYS TWO THROUGH SEVEN...SUNDAY THROUGH FRIDAY

WE DO NOT EXPECT WIDESPREAD HAZARDOUS WEATHER AT THIS TIME.

.SPOTTER INFORMATION STATEMENT...

WE MAY NEED TO ACTIVATE SPOTTERS THIS AFTERNOON AND EVENING.

HUBER

In the hours before

Special weather statement, Apr 18, 2:37 PM CDT, 1 hour 1 minute before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
237 PM CDT SAT APR 18 2015

TXZ066-072-073-182000-
RUNNELS TX-TOM GREEN TX-CONCHO TX-
237 PM CDT SAT APR 18 2015

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 300 PM CDT FOR
RUNNELS...TOM GREEN AND CONCHO COUNTIES...

POTENTIAL STORM HAZARDS INCLUDE...
  GUSTY WINDS AND HAIL

AT 234 PM CDT...A STRONG THUNDERSTORM WAS LOCATED 2 MILES SOUTHEAST
OF GOODFELLOW AIR FORCE BASE...OR ABOUT 5 MILES SOUTHEAST OF SAN
ANGELO...MOVING EAST AT 55 MPH.

POTENTIAL STORM IMPACTS INCLUDE...
  LIGHT LOOSE OBJECTS TOPPLED...
  MINOR SHINGLE DAMAGE...
  ISOLATED SMALL DENTS TO VEHICLES...

THE STRONG THUNDERSTORM WILL BE NEAR...
  VERIBEST AND VANCOURT BY 245 PM CDT
  MERETA...EOLA AND MILES BY 250 PM CDT
  THE INTERSECTION OF RANCH ROAD 380 AND RANCH ROAD 381 AND LOWAKE BY
  255 PM CDT
  ROWENA BY 300 PM CDT

LAT...LON 3173 10006 3138 9988 3128 10045 3147 10047
TIME...MOT...LOC 1937Z 248DEG 46KT 3142 10033

Special weather statement, Apr 18, 2:48 PM CDT, 50 minutes before

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
248 PM CDT SAT APR 18 2015

TXZ168>170-182015-
KIMBLE TX-MASON TX-MENARD TX-
248 PM CDT SAT APR 18 2015

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 315 PM CDT FOR
KIMBLE...MASON AND MENARD COUNTIES...

POTENTIAL STORM HAZARDS INCLUDE...
  GUSTY WINDS AND HAIL

AT 247 PM CDT...A STRONG THUNDERSTORM WAS LOCATED OVER US-83 NEAR THE
KIMBLE-MENARD COUNTY LINE...OR ABOUT 15 MILES NORTH OF JUNCTION...
MOVING EAST AT 20 MPH.

POTENTIAL STORM IMPACTS INCLUDE...
  SOME BROKEN TREE BRANCHES AND A FEW WEAK TREES TOPPLED...
  SCATTERED POWER OUTAGES LIKELY...
  LIGHT LOOSE OBJECTS TOPPLED...
  DANGEROUS DRIVING CONDITIONS...
  MINOR SHINGLE DAMAGE...
  ISOLATED SMALL DENTS TO VEHICLES...

THE STRONG THUNDERSTORM WILL BE NEAR...
  SALINE...LONDON...US-377 NEAR THE KIMBLE-MENARD COUNTY LINE AND
  ERNA BY 315 PM CDT

LAT...LON 3077 9990 3095 9960 3094 9953 3069 9940
      3059 9985
TIME...MOT...LOC 1949Z 256DEG 15KT 3070 9977

Local storm report, Apr 18, 3:07 PM CDT, 31 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
307 PM CDT SAT APR 18 2015

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

0300 PM     HAIL             N WALL                  31.37N 100.31W
04/18/2015  E1.00 INCH       TOM GREEN          TX   PUBLIC

&&

EVENT NUMBER SJT1500135

JW

Local storm report, Apr 18, 3:11 PM CDT, 27 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
311 PM CDT SAT APR 18 2015

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

0255 PM     HAIL             N ELDORADO              30.86N 100.60W
04/18/2015  E1.00 INCH       SCHLEICHER         TX   PUBLIC

&&

EVENT NUMBER SJT1500136

JW

Local storm report, Apr 18, 3:13 PM CDT, 25 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
313 PM CDT SAT APR 18 2015

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

0307 PM     HAIL             2 S WOODSON             32.99N  99.05W
04/18/2015  E0.88 INCH       THROCKMORTON       TX   TRAINED SPOTTER

&&

EVENT NUMBER SJT1500137

JW

Local storm report, Apr 18, 3:32 PM CDT, 6 minutes before

PRELIMINARY LOCAL STORM REPORT
NATIONAL WEATHER SERVICE SAN ANGELO TX
332 PM CDT SAT APR 18 2015

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

0332 PM     HAIL             6 WNW ELBERT            33.29N  99.10W
04/18/2015  E0.88 INCH       THROCKMORTON       TX   TRAINED SPOTTER

&&

EVENT NUMBER SJT1500138

JW

The office that day

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

Issued	Product	Office	Counties	Lasted
Apr 18, 2:00 PM CDT	Special Weather Statement	SJT	Tom Green	30 min
Apr 18, 2:06 PM CDT	Special Weather Statement	SJT	Schleicher	24 min
Apr 18, 2:20 PM CDT	Special Weather Statement	SJT	Shackelford	25 min
Apr 18, 2:24 PM CDT	Special Weather Statement	SJT	Runnels	36 min
Apr 18, 2:28 PM CDT	Special Weather Statement	SJT	Schleicher	32 min
Apr 18, 2:32 PM CDT	Special Weather Statement	SJT	McCulloch	28 min
Apr 18, 2:37 PM CDT	Special Weather Statement	SJT	Tom Green	23 min
Apr 18, 2:40 PM CDT	Severe Thunderstorm Warning	SJT	Schleicher	50 min
Apr 18, 2:46 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	44 min
Apr 18, 2:48 PM CDT	Special Weather Statement	SJT	Menard	27 min
Apr 18, 2:56 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Tom Green	49 min
Apr 18, 2:57 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, McCulloch, Mason, Menard	48 min
Apr 18, 2:58 PM CDT	Severe Thunderstorm Warning	SJT	Shackelford	20 min
Apr 18, 3:08 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Menard, Schleicher, Tom Green	52 min
Apr 18, 3:12 PM CDT	Severe Thunderstorm Warning	SJT	Concho, McCulloch, Menard	48 min
Apr 18, 3:23 PM CDT	Severe Thunderstorm Warning	SJT	Throckmorton	28 min
Apr 18, 3:40 PM CDT	Severe Thunderstorm Warning	SJT	Coleman, Concho, McCulloch	50 min
Apr 18, 3:54 PM CDT	Special Weather Statement	SJT	Jones	36 min
Apr 18, 3:59 PM CDT	Areal Flood Advisory	SJT	Concho, McCulloch, Menard	91 min
Apr 18, 4:02 PM CDT	Severe Thunderstorm Warning	SJT	Concho, McCulloch, Menard	28 min
Apr 18, 4:15 PM CDT	Severe Thunderstorm Warning	SJT	Brown, Callahan, Coleman, McCulloch	45 min
Apr 18, 4:27 PM CDT	Special Weather Statement	SJT	Jones	33 min
Apr 18, 4:30 PM CDT	Areal Flood Advisory	SJT	Coleman, Concho, McCulloch	90 min
Apr 18, 4:31 PM CDT	Severe Thunderstorm Warning	SJT	Concho, Kimble, McCulloch, Mason, Menard, San Saba	44 min
Apr 18, 4:37 PM CDT	Special Weather Statement	SJT	Sutton	38 min
Apr 18, 4:42 PM CDT	Special Weather Statement	SJT	Shackelford	33 min
Apr 18, 4:52 PM CDT	Severe Thunderstorm Warning	SJT	Callahan, Jones, Shackelford	38 min
Apr 18, 4:56 PM CDT	Areal Flood Advisory	SJT	Brown, Coleman, McCulloch, San Saba	94 min
Apr 18, 4:58 PM CDT	Special Weather Statement	SJT	Taylor	32 min
Apr 18, 5:04 PM CDT	Special Weather Statement	SJT	Brown	26 min
Apr 18, 5:13 PM CDT	Severe Thunderstorm Warning	SJT	San Saba	47 min
Apr 18, 5:32 PM CDT	Special Weather Statement	SJT	Shackelford	28 min
Apr 18, 5:34 PM CDT	Special Weather Statement	SJT	Menard	26 min
Apr 18, 5:45 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, Menard, Sutton	45 min
Apr 18, 6:13 PM CDT	Severe Thunderstorm Warning	SJT	Mason, Menard	47 min
Apr 18, 6:29 PM CDT	Severe Thunderstorm Warning	SJT	Kimble, McCulloch, Mason, Menard	46 min

Nearby

Tornado Warnings in Texas, 2015 Every tornado warning in 2015 Tornadoes 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; local storm reports from the same archive; the sounding from the Mesonet's radiosonde archive; radar from the NEXRAD Level II archive.