🔬 SPC Mesoanalysis

The East Tennessee (zoom) sector magnifies SPC's national analysis to a Greeneville-centered view of East TN and its surroundings (34.3-37.3N, 85.8-80.2W) — with real state borders (Tennessee in white) and city markers drawn on every frame, plus the same fields, overlays, and animation as the native sectors.

Images: NOAA/SPC Storm Prediction Center mesoscale analysis (public domain), updated hourly at :00. Field filled with SPC's official color palettes; overlays stack on top. The 6-hour animation steps through SPC's archived hourly frames. EHI comes from this site's own hourly HRRR render (SPC no longer analysis it) in the same SPC palette; it shows the latest model cycle rather than the hourly objective analysis.

SPC bands: ■ TSTM unorganized ■ MRGL marginal ■ SLGT slight ■ ENH enhanced ■ MDT moderate ■ HIGH high-end — shown when a composite index or outlook overlay is active; same colors as the Models-page severe walls