Middle Tennessee Nexrad Radar
|Radar automatically refreshes every 5 minutes.||Last refreshed at|
As of 2:10pm, April 24, 2010, WSW now purchases NEXRAD Data in real-time to prevent gaps in radar data during peak events (like todays storms). The raw data is processed on my dedicated weather server by software that generates the custom radar images above. During severe weather, NEXRAD data and the corresponding images are updated every 5 minutes.
Storm Attribute Icons:
NWS Severe Hail equates to 3/4" or larger.
- MESO (Mesocyclone)
MESO will be present if the NEXRAD radar indicates rotation on a slightly larger scale then the TVS signature within a thunderstorm. Mesocyclones are the parent rotation for tornado development. Seen at the surface, a mesocyclone is the wall cloud in the southwest part of a supercell thunderstorm. NEXRAD will indicate "MESO" as color rings if rotation has been detected.
MESO color attributes - The NWS uses a numerical scale of 1/3/5/7/9, where 9 is the strongest Mesocyclone.
- TVS (Tornadic Vortex Signature)
TVS or ETVS (Elevated Tornadic Vortex Signature) is a signature of a potential tornado indicated by the NEXRAD radar. NEXRAD will indicate "TVS" or "ETVS" if the rotational shear that has been calculated by the NEXRAD radar is judged strong enough that the storm may produce a tornado.The National Weather Service will issue tornado warnings based on the strength of the TVS or ETVS signature.