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MESOSCALE DISCUSSION 0495
NWS STORM PREDICTION CENTER NORMAN OK
0516 AM CDT FRI APR 17 2009
AREAS AFFECTED...PARTS OF THE EDWARDS PLATEAU AND HILL COUNTRY
REGION OF TX
CONCERNING...SEVERE THUNDERSTORM WATCH 158...
VALID 171016Z - 171115Z
THE SEVERE WEATHER THREAT FOR SEVERE THUNDERSTORM WATCH 158
CONTINUES.
STORMS/LOCAL SEVERE THREAT CONTINUE ACROSS ROUGHLY THE SRN HALF OF
THE WW.
WELL-ORGANIZED BOW ECHO WHICH EARLIER MOVED ACROSS MCCULLOCH AND
MASON COUNTIES IS NOW NEARING SAN SABA COUNTY...THOUGH THIS CLUSTER
OF STORMS APPEARS TO E SLOWLY WEAKENING AND BECOMING ELEVATED WITH
TIME AS IT MOVES INTO A DRIER/LESS UNSTABLE AIRMASS.
MEANWHILE...SLIGHT STORM INTENSIFICATION HAS BEEN OBSERVED OVER THE
SRN THIRD OF THE WATCH -- I.E. N AND NE OF DEL RIO -- WITHIN
CONVECTION TRAILING SWWD FROM THE AFOREMENTIONED BOW.
CAPPING SEEMS TO CONTINUE HAMPERING SRN DEVELOPMENT OF STORMS...WITH
THE STORMS ALONG THIS TRAILING PORTION OF THE BOW APPEARING SLIGHTLY
ELEVATED TO THE N SIDE OF THE SYSTEMS OUTFLOW. WE WILL CONTINUE TO
MONITOR THIS CONVECTION FOR SIGNS OF ADDITIONAL
INTENSIFICATION...BUT ATTM IT REMAINS A QUESTION AS TO WHETHER AN
ADDITIONAL WW WILL BE NEEDED.
..GOSS.. 04/17/2009
ATTN...WFO...FWD...EWX...SJT...
LAT...LON 29490100 29810149 30240118 30550011 31019917 31679939
31679789 30789773 29919866 29629981 29490100
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