KATX WSR-88D VAD Hodograph and Wind Profile

View the latest Velocity Azimuth Display (VAD) wind profile from the KATX WSR-88D NEXRAD weather radar near Seattle, WA. 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=KATX&resolution=high&qc=true&showprofile=true&showmeta=true&showhodo=true&showrings=true&ticmarks=axis&umin=-20&umax=40&vmin=-40&vmax=20&maxheight=12000&dynamicbounds=true&sfcstn=KNUW

RADAR SITE:  KATX - Seattle, WA (SFC ELEV 161 m AMSL)
NIDS SOURCE: https://tgftp.nws.noaa.gov/SL.us008001/DF.of/DC.radar/DS.48vwp/SI.katx/sn.last
NIDS VALID:  2026-08-02 06:53 UTC

SFC STATION: KNUW (METAR)
SFC SOURCE:  https://aviationweather.gov/api/data/metar?ids=KNUW&format=json
SFC VALID:   2026-08-02 06:53 UTC
Decoded surface and VAD profile data

Surface observation

METAR KNUW 020653Z 23005KT 10SM FEW025 BKN042 BKN060 14/11 A3020 RMK AO2 SLP230 T01440106 VISNO $

VAD wind profile

QCHeight AGL (m)Speed (kt)Direction (°)RMS (kt)
OK105.0230—
OK14415.03284.2
OK20518.03264.2
OK35720.03255.9
OK44920.03225.4
OK54015.03256.2
FAIL75310.03216.2
FAIL10582.02754.4
FAIL13633.02052.4
OK16688.02202.8
OK16986.02292.4
OK19739.02422.5
OK21568.02412.4
FAIL22775.02542.8
OK258211.02512.1
OK27359.02743.4
FAIL28877.02743.5
OK319210.02812.8
FAIL34364.02954.0
FAIL34973.0212.2
FAIL38014.03292.3

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).

KATX WSR-88D NEXRAD VAD hodograph showing the wind profile by height near Seattle, WA, valid 2026-08-02 06:53 UTC