Severe Thunderstorm Warning 151, NWS San Angelo, TX

661 
WWUS54 KSJT 122154
SVSSJT

SEVERE WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
454 PM CDT SUN AUG 12 2012

TXC207-253-122215-
/O.CON.KSJT.SV.W.0151.000000T0000Z-120812T2215Z/
HASKELL TX-JONES TX-
454 PM CDT SUN AUG 12 2012

...A SEVERE THUNDERSTORM WARNING REMAINS IN EFFECT UNTIL 515 PM CDT
FOR NORTHWESTERN JONES AND SOUTHWESTERN HASKELL COUNTIES...

AT 453 PM CDT... A SEVERE THUNDERSTORM WAS LOCATED NEAR TUXEDO...OR 7
MILES SOUTHWEST OF STAMFORD...MOVING EAST AT 15 MPH.

  STORM HAZARDS INCLUDE...
  QUARTER SIZE HAIL.
  DAMAGING WINDS IN EXCESS OF 60 MPH.

  WITH POSSIBLE STORM IMPACTS...
  VEHICLE DINGS...
  MINOR DAMAGE TO ROOFS...
  DAMAGE TO TREE LIMBS...
  LIGHT OBJECTS BLOWN AROUND...

THE SEVERE THUNDERSTORM WILL BE NEAR...
  STAMFORD BY 510 PM CDT...

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
SUNDAY EVENING FOR WEST CENTRAL TEXAS.

&&

LAT...LON 3295 9971 3273 9984 3288 10014 3297 10009
      3296 10000 3301 10000 3302 9999
TIME...MOT...LOC 2154Z 289DEG 13KT 3290 9990

$$

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE SAN ANGELO TX
404 PM CDT SUN AUG 12 2012

.UPDATE...
SEE UPDATE DISCUSSION BELOW.

&&

.DISCUSSION...
HAVE ADDED SEVERE THUNDERSTORM WATCH # 573 TO THE HAZARD GRID AND
THE ZONES FOR THE BIG COUNTRY COUNTIES.

21

&&

.PREV DISCUSSION... /ISSUED 312 PM CDT SUN AUG 12 2012/

SHORT TERM...
THE 19Z SURFACE MAP INDICATES A WEAK COLD FRONT ACROSS WESTERN
OKLAHOMA AND THE THE TEXAS SOUTH PLAINS. TO THE SOUTHEAST OF THE
FRONT IT IS HOT...WITH TEMPERATURES IN THE UPPER 90S TO AROUND 105
ACROSS WEST CENTRAL TEXAS. LATEST MESOANALYSIS INDICATES THE BEST
INSTABILITY WITH SBCAPES OF 2000 TO 2500 J/KG FROM THE NORTHWEST
HILL COUNTRY ON NORTHEAST ACROSS NORTHERN TEXAS. THE BEST 0-6KM
SHEAR OF 35 TO 40 KNOTS IS ACROSS OKLAHOMA AND EXTREME NORTHERN
TEXAS. NOT MUCH IN THE WAY OF TSTM DEVELOPMENT RIGHT NOW. HOWEVER
THE COMBINATION OF THE FRONT AND WEAK UPPER LEVEL FORCING WILL GET
ISOLATED TO SCATTERED TSTMS GOING BY LATE THIS AFTERNOON AND
CONTINUE INTO MUCH OF TONIGHT. AN ISOLD SEVERE STORM OR TWO WILL BE
POSSIBLE ACROSS THE EASTERN BIG COUNTRY. THE MAIN HAZARDS WILL BE
DAMAGING WINDS...LARGE HAIL AND DEADLY LIGHTNING. WILL KEEP THE SLGT
CHC POPS GOING ACROSS THE BIG COUNTRY AND NORTHERN HEARTLAND FOR
TONIGHT.

FOR MONDAY...ANOTHER HOT DAY IN IS STORE. HOWEVER...TEMPERATURES
WILL BE A FEW DEGREES COOLER DUE TO A WEAK SURFACE BOUNDARY IN
THE AREA AND SOME MID AND UPPER LEVEL CLOUD COVER. ISOLATED
THUNDERSTORMS WILL BE POSSIBLE MAINLY DURING THE AFTERNOON HOURS.

LONG TERM...
NOT MUCH CHANGE IS EXPECTED FOR MUCH OF THIS WEEK AS HOT AND DRY
WEATHER WILL CONTINUE. HIGHS WILL BE MAINLY 100 TO 105 THROUGH THE
MIDDLE OF THIS WEEK.

SOME CHANGE IN THE UPPER LEVEL FLOW PATTERN WITH THE RIDGE BREAKING
DOWN IS IN STORE LATE THIS WEEK AND THE UPCOMING WEEKEND. ALSO...A
COLD FRONT WILL MOVE SOUTH ACROSS MUCH OF TEXAS BY SATURDAY. AS A
RESULT...COOLER TEMPERATURES ARE EXPECTED ACROSS THE CWFA WITH
HIGHS ONLY IN THE LOWER TO MID 90S. THE COMBINATION OF ISENTROPIC
LIFT BEHIND THE FRONT...WEAK UPPER LEVEL DISTURBANCES AND PWAT
VALUES OF 1.5 TO 2 INCHES WILL INCREASE RAIN CHANCES FRIDAY AND
SATURDAY. WILL KEEP SLGT CHC TO CHC POPS GOING FOR NOW. THE GFS QPF
OUTPUT IS INDICATING RAINFALL AMOUNTS OF 1/2 TO 1 INCH POSSIBLE
ACROSS WEST CENTRAL TEXAS. CAN'T WAIT FOR THIS WELCOME CHANGE TO
ARRIVE.

&&

.PRELIMINARY POINT TEMPS/POPS...
ABILENE 	 77 101  73 100  75 /  20  10  10   5  10
SAN ANGELO 	 74 102  72 102  76 /  10  20  20   5   5
JUNCTION 	 74 103  74 101  74 /   5  20  20   5   5

&&

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

21

HAZARDOUS WEATHER OUTLOOK
NATIONAL WEATHER SERVICE SAN ANGELO TX
239 PM CDT SUN AUG 12 2012

TXZ049-054-064>066-071>073-076>078-098-099-113-114-127-128-139-
140-154-155-168>170-131945-
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-
239 PM CDT SUN AUG 12 2012

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

.DAY ONE...THIS AFTERNOON AND TONIGHT

THUNDERSTORMS ARE POSSIBLE THIS AFTERNOON AND EVENING...MAINLY NORTHEAST
OF A LINE FROM ROBERT LEE TO SAN SABA. THE MAIN THREATS ARE
DAMAGING WINDS AND DEADLY LIGHTNING.

.DAYS TWO THROUGH SEVEN...MONDAY THROUGH SATURDAY

MONDAY
AFTERNOON AND EVENING...THUNDERSTORMS ARE POSSIBLE SOUTH OF
INTERSTATE 20. THE MAIN THREATS WILL BE DAMAGING WINDS AND DEADLY
LIGHTNING.

.SPOTTER INFORMATION STATEMENT...

SPOTTER ACTIVATION WILL NOT BE NEEDED.

HUBER

SPECIAL WEATHER STATEMENT
NATIONAL WEATHER SERVICE SAN ANGELO TX
424 PM CDT SUN AUG 12 2012

TXZ113-122200-
JONES TX-
424 PM CDT SUN AUG 12 2012

...SIGNIFICANT WEATHER ADVISORY EFFECTIVE UNTIL 500 PM CDT FOR JONES
COUNTY...

AT 418 PM CDT...A STRONG THUNDERSTORM WAS INDICATED BY NATIONAL
WEATHER SERVICE DOPPLER RADAR 4 MILES NORTHEAST OF HAMLIN...MOVING
SOUTHEAST AT 15 MPH.

* THE STRONG THUNDERSTORM WILL BE NEAR...
  TUXEDO BY 445 PM CDT

FREQUENT CLOUD TO GROUND LIGHTNING IS OCCURRING WITH THIS STORM. 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.

DIME SIZE HAIL AND WIND GUSTS TO 50 MPH ARE LIKELY WITH THIS STORM.
HEAVY RAINFALL WILL CAUSE PONDING OF WATER ON AREA ROADWAYS...
ESPECIALLY THOSE IN POOR DRAINAGE AREAS. RESIDENTS ARE ENCOURAGED TO
MONITOR THE SITUATION CLOSELY AND BE PREPARED TO TAKE THE PROPER
ACTIONS SHOULD A WARNING BE ISSUED.

A SEVERE THUNDERSTORM WATCH REMAINS IN EFFECT UNTIL 1100 PM CDT
SUNDAY EVENING FOR WEST CENTRAL TEXAS.

LAT...LON 3296 9987 3294 9981 3273 9995 3286 10015
      3296 10014 3297 10014 3296 9999
TIME...MOT...LOC 2124Z 302DEG 12KT 3292 10005