KLWX WSR-88D VAD Hodograph and Wind Profile

View the latest Velocity Azimuth Display (VAD) wind profile from the KLWX WSR-88D NEXRAD weather radar near Sterling-Washington (DC), VA. The hodograph plots horizontal wind vectors by height above ground, with color-coded altitude layers and optional METAR surface-wind data.

Latest profile valid .

Request and source metadata
URL CALL:    http://www.twisterdata.com/vad/vad.php?radar=KLWX&resolution=high&qc=true&showprofile=true&showmeta=true&showhodo=true&showrings=true&ticmarks=axis&umin=-20&umax=50&vmin=-50&vmax=20&maxheight=12000&dynamicbounds=true&sfcstn=KIAD

RADAR SITE:  KLWX - Sterling-Washington (DC), VA (SFC ELEV 89 m AMSL)
NIDS SOURCE: https://tgftp.nws.noaa.gov/SL.us008001/DF.of/DC.radar/DS.48vwp/SI.klwx/sn.last
NIDS VALID:  2026-08-11 02:38 UTC

SFC STATION: KIAD (METAR)
SFC SOURCE:  https://aviationweather.gov/api/data/metar?ids=KIAD&format=json
SFC VALID:   2026-08-11 01:52 UTC
Decoded surface and VAD profile data

Surface observation

METAR KIAD 110152Z 20008KT 10SM FEW040 BKN090 BKN250 21/20 A3004 RMK AO2 SLP171 T02110200

VAD wind profile

QCHeight AGL (m)Speed (kt)Direction (°)RMS (kt)
OK108.0200—
FAIL12411.01986.8
OK21611.02115.0
FAIL3688.02015.9
FAIL5213.03015.7
FAIL5825.015.1
OK76413.03595.1
OK82517.03335.3
OK103921.03206.0
OK113024.03044.8
OK137428.03073.9
OK143530.03053.3
OK170928.03163.6
OK174028.03163.5
OK204528.03203.2
OK219727.03223.0
OK234925.03192.3
OK265425.03232.6
OK277625.03252.7
OK295924.03252.3
OK326424.03282.1
OK344727.03312.1
OK356929.03312.4
OK387332.03352.3
OK417830.03261.9

QC keeps a level only where its wind speed exceeds twice its RMS fit error (the operational 2×RMS signal-to-noise test). FAIL rows are retained here for reference but excluded from QC-filtered plotting. A dash means the product reported no RMS for that level (kept, not assessable).

KLWX WSR-88D NEXRAD VAD hodograph showing the wind profile by height near Sterling-Washington (DC), VA, valid 2026-08-11 02:38 UTC