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-- Discussion containing changed information from previous version are highlighted. --
508
FXUS61 KLWX 170755
AFDLWX

Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
355 AM EDT Tue Sep 17 2019

.SYNOPSIS...
High pressure will build across the Northeast U.S. through the end
of the week and into the weekend.

&&

.NEAR TERM /THROUGH TONIGHT/...
A nearby weak front could spawn a shower or two in spots today.
Otherwise, expect high pressure to build in from the northwest today
and tonight. Winds will be generally light with dry weather.

&&

.SHORT TERM /WEDNESDAY THROUGH THURSDAY NIGHT/...
High pressure will remain in control through the period. Dry
conditions with light northeast winds, becoming more variable as the
high pressure settles overhead. Dry conditions and cool temperatures
in the 70s during the day, followed by temperatures in the 50s at
night.

&&

.LONG TERM /FRIDAY THROUGH MONDAY/...
Surface high pressure will slowly ease off the coast through the
extended portion of the forecast, as ridging remains in place aloft.
This setup will promote a warming trend as well as increases in
humidity (dewpoints rising from upper 40s/lower 50s to above 60).
But the forecast will remain rain-free until perhaps Monday, when an
approaching cold front could perhaps support shower (thunderstorm?)
activity. PoPs (20-30%) will be focused on the Potomac Highlands at
this time.

&&

.AVIATION /08Z TUESDAY THROUGH SATURDAY/...
VFR conditions expected this week under high pressure. Winds
will be 10 kt or less...from the northeast today, becoming south
by Thursday.

&&

.MARINE...
Small Craft Advisories are in effect for most of the Chesapeake
Bay and Tidal Potomac through this afternoon. The Small Craft
will be extended into tonight for the lower tidal Potomac/Bay
Drum Point-Smith Point/Tangier Sound. Guidance suggesting 15-20
kt winds will be lingering there. Momentum transfer profiles
will be favorable with mid-upper 70 degree water and air temps
in the 60s. Small Craft Advisories may need to be extended
through Wednesday.

Winds should be light Thursday through the end of the week
under high pressure.

&&

.LWX WATCHES/WARNINGS/ADVISORIES...
DC...None.
MD...None.
VA...None.
WV...None.
MARINE...Small Craft Advisory until noon EDT today for ANZ531>533-
     538>542.
     Small Craft Advisory until 6 AM EDT Wednesday for ANZ534-537-
     543.

&&

$$
SYNOPSIS...KLW
NEAR TERM...KLW
SHORT TERM...KLW
LONG TERM...HTS
AVIATION...HTS/KLW
MARINE...HTS/KLW