Heat — Decatur, Tennessee

2025-06-25 · Decatur, Tennessee

Event narrative

Maximum heat index of 106 degrees.

Wider weather episode

A heat dome continued to strengthen and expand across the eastern CONUS during late June. The upper level pattern was dominated by a large 594 dam Bermuda High over the eastern US with a deep trough over the West Coast. This pattern persisted for several days before the ridge finally broke down and the westerlies advanced further south.

Source: NOAA Storm Events Database, event_id 1275837. Narrative written by the NWS forecast office that issued the report.