MESO: Mesoscale Discussion 0773

ACUS11 KWNS 101451
SWOMCD
SPC MCD 101451
TXZ000-101645-

MESOSCALE DISCUSSION 0773
NWS STORM PREDICTION CENTER NORMAN OK
0951 AM CDT THU MAY 10 2012

AREAS AFFECTED...PORTIONS OF CENTRAL AND S TX INCLUDING THE MID AND
LOWER RIO GRANDE VALLEY

CONCERNING...SEVERE THUNDERSTORM WATCH 270...

VALID 101451Z - 101645Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 270
CONTINUES.

SUMMARY...THREAT FOR LARGE HAIL AND DAMAGING WINDS CONTINUES FROM
THE TX BIG BEND AREA INTO PARTS OF CENTRAL AND S TX. SOUTHERN
PORTIONS OF THE WW MAY REQUIRE UPGRADE TO TORNADO WATCH LATER THIS
MORNING.

DISCUSSION...LATEST WATER VAPOR LOOP SHOWS THE UPPER LOW CONTINUING
TO MAKE SLOW/STEADY EWD PROGRESS TOWARD FAR W TX...WHILE A JET
STREAK S OF THIS FEATURE -- OVER NRN MEXICO -- IS NOSING ACROSS THE
RIO GRANDE VALLEY INTO CENTRAL AND S TX.

ASCENT ASSOCIATED WITH THIS FEATURE COMBINED WITH CONTINUED HEATING
OF A VERY MOIST LOWER TROPOSPHERE STREAMING NWWD ACROSS S TX/THE RIO
GRANDE VALLEY WILL CONTINUE TO FUEL DEVELOPMENT/INTENSIFICATION IN
AND NEAR THE ONGOING WW. WITH THE ENVIRONMENT SUPPORTING
SUPERCELLS...WIND/HAIL THREAT SHOULD EVENTUALLY EXPAND TO INCLUDE
ISOLATED TORNADOES...AS BOUNDARY-LAYER DESTABILIZATION CONTINUES
INTO THE AFTERNOON HOURS.

..GOSS.. 05/10/2012

...PLEASE SEE WWW.SPC.NOAA.GOV FOR GRAPHIC PRODUCT...

ATTN...WFO...CRP...EWX...BRO...SJT...MAF...

LAT...LON 25859861 30670168 31080119 30779902 29459762 25869635
25859861

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