KLOT WSR-88D VAD Hodograph and Wind Profile

View the latest Velocity Azimuth Display (VAD) wind profile from the KLOT WSR-88D NEXRAD weather radar near Chicago, IL. 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=KLOT&resolution=high&qc=true&showprofile=true&showmeta=true&showhodo=true&showrings=true&ticmarks=axis&umin=-30&umax=50&vmin=-40&vmax=40&maxheight=12000&dynamicbounds=true&sfcstn=KLOT

RADAR SITE:  KLOT - Chicago, IL (SFC ELEV 202 m AMSL)
NIDS SOURCE: https://tgftp.nws.noaa.gov/SL.us008001/DF.of/DC.radar/DS.48vwp/SI.klot/sn.last
NIDS VALID:  2026-08-11 02:55 UTC

SFC STATION: KLOT (METAR)
SFC SOURCE:  https://aviationweather.gov/api/data/metar?ids=KLOT&format=json
SFC VALID:   2026-08-11 02:55 UTC
Decoded surface and VAD profile data

Surface observation

METAR KLOT 110255Z AUTO 06006KT 10SM BKN022 26/26 A2997 RMK AO2

VAD wind profile

QCHeight AGL (m)Speed (kt)Direction (°)RMS (kt)
OK106.060—
FAIL10310.01047.4
FAIL13310.01125.8
OK19410.01064.6
FAIL5606.03135.0
FAIL7127.03215.1
FAIL7438.03345.5
OK101712.02343.5
OK132213.03046.1
OK135214.02975.9
OK162720.02594.9
OK168822.02574.8
OK193229.02563.9
OK217531.02553.6
OK223632.02572.8
OK254134.02552.9
OK272433.02712.8
OK284632.02733.1
OK315131.02822.2
OK342527.02902.0
OK345627.02902.0

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).

KLOT WSR-88D NEXRAD VAD hodograph showing the wind profile by height near Chicago, IL, valid 2026-08-11 02:55 UTC