Area Forecast Discussion
Issued by NWS Sterling, VA

Current Version | Previous Version | Text Only | Print | Product List | Glossary On
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
-- Remove Highlighting --
-- Discussion containing changed information from previous version are highlighted. --
000 FXUS61 KLWX 270112 AFDLWX Area Forecast Discussion National Weather Service Baltimore MD/Washington DC 912 PM EDT Sun Mar 26 2017 .SYNOPSIS... A front will remain stationary across the area through this evening then return as a warm front early Monday. Another cold front will cross the area late Tuesday. High pressure will build over the region Thursday. && .NEAR TERM /THROUGH MONDAY/... A warm front is stretched from Lake Erie to Central VA this evening. Easterly flow persists across the Mid-Atlantic and low stratus and patchy drizzle will continue. Light rain has broken out across the central foothills from southerly flow aloft overrunning the frontal boundary in place. Another area of rain will move E-NE across the Highlands tonight. Hi-res guidance keeps steady rain west of the Blue Ridge and across northern MD into Monday morning however on-off rain and drizzle are likely further east into Monday morning. The warm front will likely stay stationary overnight since low- level flow is light. Temps will stay steady overnight. Patchy fog is also possible across the DC and Baltimore metros into Monday morning. The warm front will clear from south to north Monday morning. Low clouds and patchy fog will last the longest across northeast Maryland Monday morning. Temps will soar back into the 70s across much of the area by afternoon. A weak convergence zone will exist/remain and combined with some instability could be enough for scattered showers and an isolated thunderstorm. && .SHORT TERM /MONDAY NIGHT THROUGH TUESDAY NIGHT/... Better forcing and moisture spreads across the area late Mon night and Tue with approach of low pressure and associated cdfnt for better coverage of showers and thunderstorms. && .LONG TERM /WEDNESDAY THROUGH SUNDAY/... Long term period starts dry as high pressure builds over our region Wednesday into Thursday with high temperatures in the 50s and 60s. Conditions will deteriorate Thursday night into Friday as a low pressure system tracks east-northeast from Missouri to near Lake Erie. Its associated warm front will stay south of the Mid-Atlantic into Friday before lifting Friday night. Low pressure develops near or off of the Delmarva Peninsula Friday night into Saturday as unsettled conditions continue over our region. Conditions improve during the day on Saturday as low pressure moves away from the coast. Dry conditions continue into Sunday. && .AVIATION /01Z MONDAY THROUGH FRIDAY/... IFR/LIFR conditions tonight with cigs/vsbys improving to MVFR/VFR Mon. RA/DZ is possible at terminals overnight into Monday. SHRA/VCTS possible Monday afternoon. Showers and possible t-storms expected again on Tue. Dry/VFR conditions expected for Wednesday and Thursday before rain approaches the area Thursday night, possibly bringing sub- VFR conditions over the terminals into Friday. && .MARINE... Winds are expected to increase tonight across the southern waters and SCA is in effect through Monday. Southerly winds will weaken Monday night. Low pressure and a cold front will impact the waters Tuesday and Tuesday night. SCA is likely during this time. Dry conditions expected for Wednesday and Thursday before rain approaches the area Thursday night, bringing showers over the waters into Friday. Wind gusts will be near the small craft advisory threshold during parts of this period... therefore SCA possible at times. && .LWX WATCHES/WARNINGS/ADVISORIES... DC...None. MD...None. VA...None. WV...None. MARINE...Small Craft Advisory until 6 PM EDT Monday for ANZ533-534-537- 541>543. && $$ SYNOPSIS...LFR NEAR TERM...HSK/LFR SHORT TERM...LFR LONG TERM...IMR AVIATION...HSK/IMR/LFR MARINE...HSK/IMR/LFR

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