TVS

TVS (Tornadic Vortex Signature) - a distinct feature in the Doppler radar radial velocity field; it indicates intense, concentrated rotation -- more so than that of a mesocyclone.

TVS
Tornadic Vortex Signature. Doppler radar signature in the radial velocity field indicating intense, concentrated rotation - more so than a mesocyclone.

TVS (Tornado Vortex Signature): An image of a tornado on the Doppler radar screen that shows up as a small region of rapidly changing wind speeds inside a mesocyclone.

TVS- Tornado Vortex Signature
TWEAK- To change slightly. Often in reference to slightly changing MOS output or any other form of model guidance.
UA- Upper Air ...

TVS - Tornadic Vortex Signature. A doppler-radar feature showing tight rotation within a thunderstorm radar image.

Existence of a TVS strongly increases the probability of tornado occurrence, but does not guarantee it; therefore, the feature triggering it must be examined closely by the radar operator. A TVS is not a visually observable feature.

When the central pixels near the beam axis show exceptionally strong winds, this signature is called a tornado vortex signature (TVS). This image shows the TVS in the velocity field from the same Tennessee and Kentucky storms.

Radar characteristics often (but not always) include a hook or pendant, bounded weak echo region (BWER), V-notch, mesocyclone, and sometimes a TVS.

NOAA National Weather Service - Cite This Source - This Definition
Browse Related Terms: Doppler Radar, Isodop, Mean Doppler Velocity, Multiple Doppler Analysis, Tornado Vortex Signature, Triple Doppler, TVS ...

See also: Cyclone, Tornado, Radar, Velocity, Storm