Excessive Heat — St. Mary's, Maryland

2024-07-09 · St. Mary's, Maryland

Event narrative

The ASOS at Patuxent NAS (KNHK) measured a peak heat index value of 109, and the AWOS at Webster Naval Air Park (KNUI) measured a peak heat index of 112. Several mesonets in the county measured peak heat indices around 110.

Wider weather episode

Hot and humid conditions overspread parts of Maryland on July 9, producing heat indices above 100 to 110.

Source: NOAA Storm Events Database, event_id 1204891. Narrative written by the NWS forecast office that issued the report.