Severe Storm Outlook Narrative (AC)
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000
ACUS11 KWNS 250932
SWOMCD
SPC MCD 250931
TXZ000-251100-

MESOSCALE DISCUSSION 0449
NWS STORM PREDICTION CENTER NORMAN OK
0431 AM CDT SAT APR 25 2015

AREAS AFFECTED...SOUTH-CENTRAL TX/HILL COUNTRY

CONCERNING...SEVERE THUNDERSTORM WATCH 107...

VALID 250931Z - 251100Z

THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 107
CONTINUES.

SUMMARY...LARGE HAIL/LOCALLY DAMAGING WIND POTENTIAL WILL CONTINUE
TO SPREAD EASTWARD ACROSS SOUTH-CENTRAL TX/HILL COUNTRY VICINITY
EARLY THIS MORNING...INCLUDING PARTS OF THE SAN ANTONIO METRO AREA
THROUGH AT LEAST 530 AM CDT.

DISCUSSION...SCATTERED RIGHT-MOVING/SLIGHTLY ELEVATED SUPERCELLS
HAVE CONTINUED TO INCREASE/SPREAD EASTWARD ACROSS ACROSS THE HILL
COUNTRY EARLY THIS MORNING IN VICINITY OF A WEAK WEST/SOUTHWEST TO
EAST/NORTHEAST ORIENTED SURFACE BOUNDARY. LARGE HAIL WILL REMAIN A
DISTINCT CONCERN THROUGH THE EARLY MORNING WITHIN AN ENVIRONMENT
CHARACTERIZED BY MODERATELY STEEP MID-LEVEL LAPSE RATES/MODERATE
BUOYANCY AND STRONG/UNIDIRECTIONAL SOUTHWESTERLY WINDS THROUGH THE
CLOUD BEARING LAYER. LATEST WSR-88D VWP DATA FROM LAUGHLIN AFB IS
CONSISTENT WITH EFFECTIVE SHEAR OF AT LEAST 40-50 KT. WHILE LARGE
HAIL REMAINS THE PRIMARY THREAT EARLY THIS MORNING...IT IS
CONCEIVABLE THAT UPSCALE QUASI-LINEAR GROWTH COULD OCCUR SUCH THAT
DAMAGING WINDS BECOME MORE OF A CONCERN THROUGH EARLY/MID-MORNING.

..GUYER.. 04/25/2015

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

ATTN...WFO...HGX...CRP...EWX...

LAT...LON   28619910 29020058 29560075 29939913 30419715 30329610
            29449588 28669676 28629898 28619910



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