Excessive Heat — Sequoyah, Oklahoma

2025-07-20 · Sequoyah, Oklahoma

Wider weather episode

A ridge of high pressure in the middle and upper atmosphere developed over the south central United States during late July. Seasonably hot afternoon temperatures reaching the mid 90s to near 100 degrees, combined with unseasonably high humidity, resulted in heat index values in the 110 to 115 degree range across portions of eastern Oklahoma on the 20th and 21st.

Source: NOAA Storm Events Database, event_id 1280859. Narrative written by the NWS forecast office that issued the report.