Showers and Storms continue across the East; Heat, Critical Fire Weather, Drought, and Poor Air Quality continues in the West

A series of fronts will focus locally heavy showers and storms across portions of the central and eastern U.S. through the end of the workweek. Dangerous to extreme heat continues across the Southwest U.S., eventually spreading eastward over the weekend into early next week. Elevated fire weather conditions continue across the Great Basin, with degraded air quality lingering across the Northwest. Read More >

Latest Aviation Discussion:

.AVIATION /13Z WEDNESDAY THROUGH SUNDAY/... MVFR to IFR CIGs are expected to persist this morning as a warm front lifts north through the area. Heavy showers and a few thunderstorms are possible at DCA and IAD, though all terminals could get some rain this morning, with reduced VSBY possible. Conditions do improve and return to VFR by mid afternoon, before another round of thunderstorms could impact area terminals. PROB30 groups in the TAFs have been adjusted earlier to capture latest trends in highest TS probs. Winds shift to mainly south to southwesterly for the foreseeable future as a Bermuda high pressure system persists across the western Atlantic. Daily convective chances each afternoon and evening will support convective-driven restrictions. With little change in the upcoming pattern, this sort of forecast will likely hold for the next several days. VFR conditions are expected most of the time Saturday and Sunday, but a few showers and thunderstorms are possible, especially during the afternoon and evening hours each day. AVIATION...BJL/DHOF/KRR Update as of: 905 AM EDT Wed Aug 5 2026

This discussion and more can be found in the Area Forecast Discussion.

Aviation Forecasts

The National Weather Service (NWS) Weather Forecast Office (WFO-LWX), in Sterling, VA has responsibility for six Terminal Aerodrome Forecasts or TAFs in Virginia, Maryland and the eastern West Virginia panhandle. Click on each map below to view the latest decoded TAF Note: maps are not for official aviation use. FAA VFR charts are available here.

REAGAN NATIONAL (DCA)

TERMINAL FORECAST (DCA)

24 HRS OF OBSERVATIONS

FAA DETAILS

TABULAR FORECAST

DCA TAF BOARD

DULLES (IAD)

TERMINAL FORECAST (IAD)

24 HRS OF OBSERVATIONS

FAA DETAILS

TABULAR FORECAST

IAD TAF BOARD

BALTIMORE (BWI)

TERMINAL FORECAST (BWI)

24 HRS OF OBSERVATIONS

FAA DETAILS

TABULAR FORECAST

BWI TAF BOARD

CHARLOTTESVILLE (CHO)

TERMINAL FORECAST (CHO)

24 HRS OF OBSERVATIONS

FAA DETAILS

TABULAR FORECAST

CHO TAF BOARD

MARTIN STATE (MTN)

TERMINAL FORECAST (MTN)

24 HRS OF OBSERVATIONS

FAA DETAILS

TABULAR FORECAST

MTN TAF BOARD

MARTINSBURG (MRB)

TERMINAL FORECAST (MRB)

24 HRS OF OBSERVATIONS

FAA DETAILS

TABULAR FORECAST

MRB TAF BOARD

Click here for the latest decoded METARs at all 6 WFO Sterling TAF sites

Center Weather Service Unit Products

The Leesburg VA Center Weather Service Unit (CWSU/ZDC) covers the NWS Sterling, VA County Warning Area. Use the buttons on the map or....CLICK HERE to view ZDC's web site. For complete AVIATION WEATHER CENTER products click here.

Interactive Aviation Map (mouse over & CLICK for Observations)

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Decoded/Raw Text

24 hour decoded observations for Virginia Portion of our CWA...
24 hour decoded observations for Maryland Portion of our CWA...
24 hour decoded observations for West Virginia Portion of our CWA...

METAR Request form via the Aviation Weather Center. Raw and decoded observations.
Request past 36 raw observations for TAF SITES...
Most recent WFO Sterling (LWX) Rainfall, Snowfall, Wind Gusts
Hourly Weather Roundup for LWX CWA