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ACUS11 KWNS 180452
SWOMCD
SPC MCD 180452
TXZ000-180615-
Mesoscale Discussion 0381
NWS Storm Prediction Center Norman OK
1152 PM CDT Wed Apr 17 2019
Areas affected...Portions of central and southern TX
Concerning...Severe potential...Watch possible
Valid 180452Z - 180615Z
Probability of Watch Issuance...40 percent
SUMMARY...Sporadic strong to severe wind gusts will continue the
next several hours across parts of northern into southern TX. WFOs
DFW and EWX have expended WW 78 and 79 eastward, and a new watch
across portions of the CRP WFO could be needed later depending on
convective trends.
DISCUSSION...Several bowing line segments stretched from north TX south/southwest toward Laredo TX as of 0430z. While convection has
generally trended downward late this evening, several intense cells
continue to produce severe wind gusts. This trend will likely
continue for several hours into the overnight hours to the east of
severe thunderstorm watches 78 and 79. The downstream airmass
remains very moist and moderately unstable with strong vertical
shear. However, forcing for ascent will decrease with eastward
extent and this may ultimately limit severe potential beyond about
09z. Nevertheless, potential exists at least in the near term for
sporadic strong/damaging wind gusts.
The southern part of the bowing segments over Uvalde to Maverick
Counties in southern TX will track more east/southeast toward
portions of the Corpus Christi WFO. Depending on radar trends, a new
watch may be needed for portions of that area, since none of the CRP
county warning area is included in WW 79.
..Leitman/Hart.. 04/18/2019
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...HGX...FWD...CRP...EWX...
LAT...LON 28590008 29099957 30039840 31309761 32239724 32519705
32639686 32479640 32129611 31839600 30709600 29369665
28499735 27959814 27879930 27949996 28220021 28590008
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