Area Forecast Discussion
Issued by NWS Sterling, VA

Current Version | Previous Version | Text Only | Print | Product List | Glossary Off
Versions: 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KLWX 220006 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 806 PM EDT Sun Aug 21 2016 .SYNOPSIS...
-- Changed Discussion --
High pressure will build over the area into Tuesday before moving offshore through the rest of the week.
-- End Changed Discussion --
&& .NEAR TERM /TONIGHT/...
-- Changed Discussion --
Cold front is moving offshore. NWly flow behind the front will gust around 20 mph overnight. Min temps low to mid 60s.
-- End Changed Discussion --
&& .SHORT TERM /MONDAY THROUGH TUESDAY NIGHT/...
-- Changed Discussion --
High pressure overhead through Monday night. Cool and dry high pressure with max temps Monday and Tuesday low 80s. Min temps Monday and Tuesday night generally low 60s. Light onshore flow Tuesday becomes southerly Tuesday night as the high sets up along the northern Mid-Atlantic coast.
-- End Changed Discussion --
&& .LONG TERM /WEDNESDAY THROUGH SUNDAY/...
-- Changed Discussion --
High pressure will move offshore during midweek leading to a warming trend in temperatures and increasing humidity. A strong middle to upper level ridge will build over the interior southeastern United States late in the week and persist into the weekend. Meanwhile, a cold front will drop into the area from the northwest on Friday then stall and weaken near or just south of the area. This will lead to an increased chance for showers and thunderstorms.
-- End Changed Discussion --
&& .AVIATION /00Z MONDAY THROUGH FRIDAY/...
-- Changed Discussion --
NWly winds gusts 15 to 20 kt overnight. VFR as high pressure builds through Monday night and persists offshore through the middle of next week. VFR continues Wednesday into Thursday with southeasterly winds at or below 10 knots.
-- End Changed Discussion --
&& .MARINE...
-- Changed Discussion --
Small craft advisory for NWly 25 kt gusts tonight behind the cold front. Winds ease through Monday morning with high pressure building overhead Tuesday morning for a dry and tranquil period which continues into the midweek. Southeasterly flow around high pressure departing to the east of the waters may result in gusts close to Small Craft Advisory levels Wednesday into Thursday.
-- End Changed Discussion --
&& .CLIMATE... An update to this summer`s average temperature... Jun 1-Aug 20 Site Rank Average Temperature DCA 4 80.5 Balt 20 77.4 IAD 3 77.3 At DC the top five warmest summers have all been since 2010. Records go back to 1871. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...Coastal Flood Advisory until 11 PM EDT this evening for MDZ014. Coastal Flood Advisory until 8 PM EDT this evening for MDZ017. VA...None. WV...None. MARINE...Small Craft Advisory until noon EDT Monday for ANZ530>534- 537>543. Small Craft Advisory until 10 AM EDT Monday for ANZ535-536. && $$ UPDATE...WOODY! PREVIOUS...BAJ/HTS/DFH

USA.gov is the U.S. government's official web portal to all federal, state and local government web resources and services.