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ACUS11 KWNS 272051
SWOMCD
SPC MCD 272050 MEZ000-MAZ000-NHZ000-CTZ000-VTZ000-NYZ000-NJZ000-PAZ000-DEZ000-VAZ000-MDZ000-DCZ000-WVZ000-272145-
Mesoscale Discussion 1175
NWS Storm Prediction Center Norman OK
0350 PM CDT Fri Jul 27 2018
Areas affected...Mid-Atlantic states to western ME
Concerning...Severe Thunderstorm Watch 312...313...314...
Valid 272050Z - 272145Z
The severe weather threat for Severe Thunderstorm Watch 312, 313,
314 continues.
SUMMARY...The threat for isolated damaging wind gusts and marginally
severe hail continues for most of the areas covered by Severe
Thunderstorm Watches #0312, 0313, and 0314 mainly over the southern
and eastern portions of the area.
DISCUSSION...Scattered thunderstorms continue to cover an expansive
area from southern VA to western ME with MLCAPE of 1000 (northeast)
to 2500 (VA) J/kg and sufficient deep-layer shear continuing to
support some organized bowing/supercellular characteristics,
although most of the organized cells have been transient in nature.
The tendency for outflows spreading quite rapidly from the storms
despite the stronger deep-layer shear indicates the rather weak
low-level winds and moderate evaporation occurring under cloud base
is precluding any longer-lived organization. However, outside of the
areas that have received expansive stabilization from the earlier
storms (to be indicated in Watch Status updates shortly), the threat
for isolated damaging winds and marginally severe hail will continue
for the next few hours.
..Coniglio/Grams.. 07/27/2018
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...CAR...GYX...BOX...BTV...OKX...ALY...PHI...BGM... AKQ...CTP...LWX...RNK...RLX...
LAT...LON 37568039 38517960 39377863 40147748 40937661 41807554
42887407 43767258 44357129 45187057 45816965 45176882
44486935 43257071 42427153 41567267 40557399 39497481
38917539 37557625 36957719 36707844 36937971 37568039
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