Area Forecast Discussion
Issued by NWS Sterling, VA

Current Version | Previous Version | Graphics & Text | 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 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50
-- Highlight Changed Discussion --
-- Discussion containing changed information from previous version are highlighted. --
873 FXUS61 KLWX 220800 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 400 AM EDT Sat Oct 22 2016 .SYNOPSIS... AN upper trough will cross the region this morning. Surface high pressure will be moving in as low pressure strengthens as it moves away to the NE. The result will be gusty winds. A reinforcing cold front moves through Monday with cool high pressure to follow for mid week. A weak warm front nearing the area may bring some showers Thursday. && .NEAR TERM /TODAY/... Main rain shield with the low pressure system has moved east of our area. That just leaves the scattered showers with the upper trough this morning. After that trough axis shifts east of us, winds will gradually diminish with a partly to mostly sunny and cool afternoon. && .SHORT TERM /SUNDAY THROUGH MONDAY/... High pressure will produce a pleasant fall day for Sunday. A reinforcing cold front moves through on Monday with cool temps for midweek. No precip expected with the front however. && .LONG TERM /TUESDAY THROUGH FRIDAY/... High pressure will settle over the Mid Atlantic states Tuesday into Wednesday, providing sunny skies and cool temperatures. Its still looking like a good radiational cooling setup for Tuesday night, making it the most obvious choice for upcoming frost potential. The forecast for the end of the week not clear-cut at all, as GFS/ECMWF depicting distinctly different solutions. Am not certain either is all that likely. Even the various GEFS members in complete disarray. Will be maintaining some semblance of continuity in that there will be POPs at the end of the forecast from a transitory shortwave and surface reflection. Fairly low confidence at this time as to how strong this cold front will be. && .AVIATION /08Z SATURDAY THROUGH WEDNESDAY/... Gusty NW winds to contend with this morning...gradually diminishing this afternoon. Otherwise VFR conditions through the weekend and early week. Aside from patchy early morning valley fog, VFR Tuesday- Wednesday under high pressure. && .MARINE... Gale warnings for the waters today for NW winds with gusts to 35kts. Small Craft Advisory level winds will persist for most of the waters into Tuesday morning before high pressure builds across the waters. Otherwise, diminishing north winds Tuesday becoming light Wednesday. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...Wind Advisory until noon EDT today for VAZ025>027-029-503-504- 507-508. WV...Wind Advisory until noon EDT today for WVZ055-501-502-505-506. MARINE...Small Craft Advisory from 2 AM to 8 PM EDT Sunday for ANZ531>534-539>541-543. Gale Warning until 2 AM EDT Sunday for ANZ531>534-539>541-543. Gale Warning until 6 PM EDT this evening for ANZ530-535>538- 542. && $$ SYNOPSIS...CAS NEAR TERM...CAS SHORT TERM...CAS LONG TERM...HTS AVIATION...CAS/HTS MARINE...CAS/HTS is the U.S. government's official web portal to all federal, state and local government web resources and services.