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Mesoscale Discussion 0609
NWS Storm Prediction Center Norman OK
0818 PM CDT Fri May 15 2020
Areas affected...Texas and Oklahoma Panhandles
Concerning...Severe potential...Watch unlikely
Valid 160118Z - 160345Z
Probability of Watch Issuance...20 percent
SUMMARY...A wind damage and hail threat will be possible from mid to
late evening across the Oklahoma and Texas Panhandles. The threat
should be too marginal to warrant weather watch issuance.
DISCUSSION...Terrain-induced thunderstorm activity is currently in
the far northwestern Texas Panhandle. The line is being supported by
large-scale ascent ahead of a subtle shortwave trough that is moving
eastward through the central High Plains. This line of storms is
located on the western edge of a moderately unstable airmass with
the RAP estimating MLCAPE in the 1000 to 2000 J/kg range. In
addition, an axis of steep low-level lapse rates is analyzed by the
RAP across the western Texas Panhandle. The may be enough for a
marginal wind damage threat as the line moves eastward into
increasing instability this evening. Although wind damage and hail
could occur with the strongest of cores, the Amarillo WSR-88D VWP
suggests that deep-layer shear is too weak for an organized severe
threat. For this reason, weather watch issuance is not expected
across the Oklahoma and Texas Panhandles this evening.
..Broyles.. 05/16/2020
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...AMA...
LAT...LON 35510246 35300098 35280051 35620006 36600002 36860056
36770259 36540294 36080296 35690290 35510246
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