Latest Aviation Discussion:
.AVIATION /19Z MONDAY THROUGH SATURDAY/...
A cold front approaches from the northwest through tonight.
Scattered showers and thunderstorms have been developing north
and west of MRB and will drift south and east with time through
this evening. Given relatively good agreement on the timing and
placement in the latest models, decided to convert to VCTS for a
few hours from late afternoon through early evening. TEMPOs may
eventually be needed. Kept PROB30 at CHO given more uncertainty
in the development of storms in this area. NW flow 7-12 kts is
expected, perhaps becoming briefly a bit more W this evening
before shifting to N by daybreak Tue. IFR CIGs/fog possible
especially near MRB/CHO after 06Z tonight, but given the amount
of uncertainty, kept visibility at MVFR for now.
VFR with return to S flow Wednesday, then potential showers and
thunderstorms re-enter the forecast at times Thursday through
Saturday. Winds shift back to the NW or N Thursday in the wake
of a cold front.
AVIATION...ADS/DHOF
Update as of: 341 PM EDT Mon Aug 17 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
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)
See Complete MESONET MAP & OBS
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...
Surface Weather Maps
Wind Rose Data
- Washington Reagan-National (DCA) wind rose data...
- Dulles International (IAD) wind rose data...
- Baltimore-Washington International (BWI) wind rose data...
Miscellaneous