Heat — Mississippi, Arkansas

2025-07-21 · Mississippi, Arkansas

Event narrative

Maximum heat index of 107 degrees.

Wider weather episode

Dangerous heat and humidity persisted across the Mid-South. Heat indices ranged between 105 and 110 across eastern Arkansas as an upper-level ridge continued to build, nudging temperatures and heat indices upwards daily.

Source: NOAA Storm Events Database, event_id 1283395. Narrative written by the NWS forecast office that issued the report.