Catastrophic Flooding Impacts in South-Central Texas

Widespread life-threatening flash and urban flooding will continue to pose a significant threat to life and property in south-central Texas. Catastrophic fiver flooding, with rapid rises on small streams, arroyos, and typically dry washes, is expected. Monsoonal showers persist across the Great Basin and Southwest with greatest flash flooding in southern Arizona. Read More >

Latest Aviation Discussion:

.AVIATION /15Z THURSDAY THROUGH MONDAY/... VFR and mostly dry conditions will likely continue through Fri. Smoke aloft will result in a hazy appearance of the sky through Fri. Vsby reductions of 5-6 SM are possible for the metros (especially Baltimore TAF sites) today and Fri with lower vsbys (2-4 SM) tonight into Fri as smoke mixes south and closer to the sfc behind a weak front. Winds will vary between N/NW and SW over the next few days as that front sits nearby. A t-storm can't be ruled out this late afternoon and evening, mainly east of the Blue Ridge and in nrn MD but confidence is very low. Did maintain a PROB30 between 20-24z at both BWI/MTN where the confidence seems the highest for storm development off the bay breeze. Can't rule out a t-stprm near the mtns Fri afternoon. Periods of sub-VFR restrictions can be expected this weekend in any t-storms. The greatest coverage of storms likely Sat, potentially lingering into Sun. Possible early morning low CIGS or patchy fog with afternoon/evening convection. Winds will remain light overall with chaotic motions in/around t-storms. AVIATION...DHOF/CPB/EST Update as of: 1001 AM EDT Thu Jul 16 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