Area Forecast Discussion
Issued by NWS Sterling, VA
FXUS61 KLWX 132150
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
550 PM EDT Thu Oct 13 2016
A cold front will move east of the Chesapeake Bay by
this evening. High pressure will build over the region tonight
through Saturday then settle south of the area Sunday.
.NEAR TERM /THROUGH FRIDAY/...
UPDATE: Frost advisory was issued for portions of the Potomac
Highlands, Allegheny Front and VA Highlands overnight.
Temperatures are expected to fall into the low to mid 30s by dawn
Friday morning. Areas of frost are expected.
Cdfnt will move east of the Chesapeake Bay by this evening with
clearing skies and gusty winds behind it. Lows generally in the
40s elsewhere except low 50s in the city centers.
.SHORT TERM /FRIDAY NIGHT THROUGH SATURDAY NIGHT/...
High pressure will be in control of the region through the
weekend. Cool Fri and Sat with high temps in the mid 60s and lows
in the low to mid 40s. Patchy frost possible again mainly west of
the Blue Ridge.
.LONG TERM /SUNDAY THROUGH THURSDAY/...
At the surface, high pressure will drape itself from the
southeastern U.S. into the western Atlantic just south of the area
into much of next week. A couple mid-level shortwave will pass
over the area Sunday into Monday and may touch of a few showers,
but the period should remain predominately dry.
Another front may drop into the area during the middle of the week
but the fast flow pattern aloft would result in meager moisture
return and isolated to widely scattered showers at best.
Models are indicating the potential for a deeper trough later next
week, but this will be dependent on downstream blocking which models
have been too quick/strong developing over the past couple of
.AVIATION /22Z THURSDAY THROUGH TUESDAY/...
Gusty NW winds this evening with gusts up to 20kt. Winds
diminishing overnight. P6SM SKC Fri and Sat.
Mainly VFR expected Sunday-Monday with westerly winds around 10
knots. An isolated shower is possible.
Winds will strengthen this evening as pressure surge
moves in behind cdfnt. Could see gusts up to 25kt. Winds drop
below SCA by mid afternoon Fri. Winds light and variable Sat and
Westerly flow should remain below Small Craft Advisory levels
Sunday into Monday with a weak front draped across the waters.
MD...Frost Advisory from 2 AM to 9 AM EDT Friday for MDZ501-502.
VA...Frost Advisory from 2 AM to 9 AM EDT Friday for VAZ503-504.
WV...Frost Advisory from 2 AM to 9 AM EDT Friday for WVZ501>506.
MARINE...Small Craft Advisory until 2 PM EDT Friday for ANZ532>534-537-
Small Craft Advisory until 10 AM EDT Friday for ANZ530-531-535-