Area Forecast Discussion
Issued by NWS Sterling, VA
FXUS61 KLWX 071928
Area Forecast Discussion
National Weather Service Baltimore MD/Washington DC
228 PM EST Wed Dec 7 2016
High pressure builds into the area tonight. A cold front will
move through the Mid Atlantic Thursday evening. High pressure
returns to the area Friday into the weekend. Another cold front
crosses the area Monday followed by another Wednesday.
.NEAR TERM /TONIGHT/...
No problems expected overnight. High pressure will be over the
region. Any clouds will be of the high variety courtesy of a 150
knot jet that will be tracking across PA/NY. Lows primarily in the
.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...
No problems expected Thursday with the exception of increasing
clouds ahead of a reinforcing shot of cold air. Highs 45-50.
Colder air begins moving into the area Thursday night. Expect
winds to increase to 15-20 mph overnight...and then 25-30 mph
Friday. Lows Thursday night in the mid 20s..wind chills dropping
into the teens before sunrise west of I-95. A cold day Friday with
highs only in the low 40s east of the Blue Ridge...30s west...20s
Upslope snow showers will likely occur Thursday night and Friday.
For the time being we are forecasting 1-2 inches. If later shifts
raise the total higher we may need to issue an advisory. For the
far western zones our criterion is 3-5 inches in a twelve hour
Continued cold Friday night with lows 25-30.
.LONG TERM /SATURDAY THROUGH TUESDAY/...
High pressure will remain in control Saturday. An upslope flow
could generate snow showers in the Potomac Highlands, mainly early
The high will move to the East Coast Saturday night, before moving
offshore Sunday. Temperatures will remain chilly despite a return
flow evolving Sunday.
A storm system should move northeast across the Great Lakes toward
southeastern Canada Sunday and Sunday night. A trailing cold front
will move across the region Sunday night, bringing a chance of rain
or snow showers late Sunday and Sunday night.
Strong high pressure should build in behind the front Monday through
Tuesday, bringing very chilly air into the region once again.
As the high moves east, the next storm system could bring a chance
of rain or snow showers Tuesday night and Wednesday.
.AVIATION /19Z WEDNESDAY THROUGH MONDAY/...
VFR conditions expected tonight through Friday. Gusty NW winds
expected Thursday night and Friday...along with low level
Vfr conditions Saturday and Saturday night. Winds northwest 5 to 10
knots Saturday becoming light and variable Saturday night.
Winds were not as strong on the waters today as previously
thought so SCA was dropped. But winds will reintensify Thursday
night as a shot of cold air moves into the area. This will likely
need to be continued Friday.
No marine warnings expected Saturday and Saturday night. Winds
northwest 10 knots Saturday. Winds northwest 5 to 10 knots Saturday
MARINE...Small Craft Advisory from 5 PM Thursday to 5 AM EST Friday for