Mesoscale Discussion 1199
NWS Storm Prediction Center Norman OK
0320 PM CDT Fri Jun 30 2017
Areas affected...portions of northeast PA...central/eastern
NY...central/southern VT/NH...northern CT...central/estern MA
Concerning...Severe Thunderstorm Watch 385...
Valid 302020Z - 302215Z
The severe weather threat for Severe Thunderstorm Watch 385
continues.
SUMMARY...The threat for damaging winds and perhaps isolated large
hail continues primarily over the eastern two-thirds of the watch
area.
DISCUSSION...A loosely organized area of strong/occasionally severe
thunderstorms was moving across eastern New York/northeast
Pennsylvania at 2015Z. A tendency towards a more linear
reflectivity structure/short line segments has been noted since
1930Z over east-central New York in the general vicinity of KSCH,
with a subtle low/mid-level cyclonic circulation was evident over
Saratoga County NY. Latest objective analysis and area VWP data
indicate 35-45 kts of deep-layer shear and 1000-1500 j/kg of MLCAPE,
and this downstream environment will continue to support a risk for
isolated/widely scattered damaging winds for the next few hours.
Across western portions of the watch area, generally weak buoyancy
(500-locally 1000 j/kg) and adequate shear remains in place for at
least some risk for a stronger storm over the next couple of hours
with the convective line currently moving through central New York
state.
..Bunting.. 06/30/2017
...Please see www.spc.noaa.gov for graphic product...
ATTN...WFO...GYX...BOX...BTV...OKX...ALY...BGM...
LAT...LON 41517299 41477467 41487561 41617590 41847595 42597566
43257535 43637457 43787390 43797341 44137168 43937136
43377128 42977144 42117172 41817204 41517299
Read morefrom SPC Forecast Products http://ift.tt/LvpEER
No comments:
Post a Comment