Dangerous Heat in the Southwest; Severe Thunderstorms from the Central Plains into the Ohio Valley

Dangerous heat will build across the Southwest U.S. through the end of the week with daytime highs of 110-115°F. Isolated to widely scattered severe storms are expected across parts of the central and southern High Plains, Great Lakes into the Ohio Valley, and parts of the Ozarks to Lower Mississippi Valley today. Read More >

Latest Aviation Discussion:

.AVIATION /07Z WEDNESDAY THROUGH SUNDAY/... As high pressure pushes offshore today, southerly winds will gust up to 15 to 20 knots. Some isolated to scattered showers may impact the terminals by Wednesday evening/night. A cold front will approach the region on Thursday. A few strong to severe storms are possible that afternoon/evening, with gusty winds being the primary threat. There are even some indications that a couple of rounds of storms are possible, one in the early afternoon and one later in the evening. As the front stalls nearby Thursday night, some MVFR to IFR ceilings or visibilities may develop. Showers and storms could even linger into Friday, but unsure if this would impact any of the terminals at this time, as the front should stall east of I-95 and focus that threat east of most of the terminals. Can't completely rule out some restrictions though. Prevailing VFR conditions are expected Saturday. Winds shift out of the north to northeast on Saturday and are expected to remain light. AVIATION...CJL/SRT Update as of: 340 AM EDT Wed Aug 26 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