Scientific Forecaster Discussion
fxus61 klwx 261838
Area forecast discussion
National Weather Service Baltimore Maryland/Washington District of Columbia
238 PM EDT Tue Sep 26 2017
Synopsis...Hurricane Maria will continue to move north during
the next 24 hours making its closest approach to southern
Maryland Wednesday afternoon. A cold front will move across the
area late Wednesday night pushing Maria out to sea. High
pressure then gradually builds over the region through early
Near term /through tonight/...low clouds along and east of I-95
will remain the main issue tonight into Wed as northeast winds
strengthen in response to tightening pressure gradient. Patchy
dense fog is possible over the valleys west of the Blue Ridge.
Short term /Wednesday through Thursday night/...
A few showers could spread NW into the I-95 corridor as far
outer rain bands associated with Hurricane Maria move closer to
southern Maryland. Maria is expected to make its closest approach to
St. Marys County during the mid-afternoon Wed. A dry cold front
will then move across the area late Wed night and early Wed
pushing Maria out to sea. Temperatures will return to seasonal
levels Thu into the weekend.
Long term /Friday through Tuesday/...
Friday starts out dry as surface high pressure begins to build
in, but an upper trough could bring a slight chance of showers
Friday night into early Saturday. Dry conditions develop
Saturday and remain into Tuesday as ridge builds over our area
and surface high pressure centers between the Great Lakes and
New England. High temperatures will be in the low to mid 70s for
most areas east of the Blue Ridge... 60s at higher elevations.
Aviation /18z Tuesday through Sunday/...
MVFR cigs possible at dca, BWI, and mountain on northeast winds.
Patchy dense fog possible at mrb. Otherwise, clear skies
expected. A dry cold front will move across the area late Wed
night or early Thu with just a wind shift. Becoming breezy on
Thu with gusts over 20 knots.
VFR conditions expected Friday into Sunday. Some showers
possible Friday night.
Small Craft Advisory conditions only occurring at Point Lookout as of now, but
winds expected to strengthen through Thu. Small Craft Advisory conditions
expected everywhere on Thu. Chance of gales appears low at this
Small Craft Advisory expected early on Friday for some
zones of our waters. Wind gusts are expected to decrease later on
Friday and remain below criteria into Sunday.
Small Craft Advisory expected early on Friday for some zones of
our waters. Wind gusts are expected to decrease later on Friday
and remain below criteria into Sunday.
Minor coastal flooding expecte at Straits Point for the next
several high tide cycles.
District of Columbia...none.
Maryland...coastal flood advisory until 10 am EDT Wednesday for mdz017.
Marine...Small Craft Advisory from midnight tonight to 6 PM EDT
Wednesday for anz533-541-542.
Small Craft Advisory until 6 PM EDT Wednesday for anz534-537-