nws blacksburg regardless of how strong or not the PRE is what to watch, anything after that will just be a bad scene in an already ridic wet year here in southside
SHORT TERM /SUNDAY THROUGH TUESDAY NIGHT/...
As of 350 AM EDT Saturday...
By Sunday our attention will turn toward Isaias approaching the
southeast coast of the US. The latest NHC track guidance is
slower and a bit further to the west. This looks to take the
storm over eastern/coastal North Carolina Monday night. As
Isaias approaches, the trailing cold front from a surface low
moving into the great lakes will get hung up and stall over the
Appalachians and central mid Atlantic region, setting the stage
for a PRE to become established as the front interacts with the
approaching tropical circulation around Isaias. Guidance
members are all singing variations on this same theme to give
growing confidence to the possibility of widespread rainfall
beginning by late Sunday. However it is common for a PRE to have
an embedded band of enhanced rainfall and there there remains a
good deal of uncertainty in exactly where this band of enhanced
rainfall will be. As it stands now it looks like widespread
rainfall amounts of 1.5 to 2.5 inches can be expected with 3.0
inch amounts along the Blue Ridge, and orographic affects in the
mountains will also enhance rainfall amounts. This amount of
rainfall will make flooding an increasing possibility with
significant flooding possible if the PRE lingers over the same
area for a prolonged period of time. Isaias accelerates away
from the area on Tuesday but the axis of the upper trof remains
to our west and will continue our chances for showers/storms.
After one last hot day o Sunday, expect a cooling trend with
the arrival of widespread clouds and rainfall. Highs on Monday
will be in the lower 80s east, mid/upper 70s west, and just a
bit warmer for Tuesday.