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=-40&umax=10&vmin=-40&vmax=10&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:  2026-08-02 09:04 UTC

SFC STATION: KLOT (METAR)
SFC SOURCE:  https://aviationweather.gov/api/data/metar?ids=KLOT&format=json
SFC VALID:   2026-08-02 08:50 UTC
Decoded surface and VAD profile data

Surface observation

METAR KLOT 020850Z AUTO 36007KT 10SM SCT016 BKN033 BKN120 20/20 A2980 RMK AO2

VAD wind profile

QCHeight AGL (m)Speed (kt)Direction (°)RMS (kt)
OK107.0360—
FAIL10314.038.1
OK13320.0146.7
OK19425.0175.0
OK37729.0247.3
OK40830.0305.6
OK56032.0376.4
OK71232.0475.0
OK74333.0474.3
OK101734.0483.3
OK132233.0452.4
OK135233.0352.2
OK162732.0422.3
OK168835.0422.7
OK193239.0422.2
OK217538.0422.3
OK223637.0411.9
OK254136.0421.4
OK275428.0421.6

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 2026-08-02 09:04 UTC