Dense Fog — Gallatin, Illinois

2024-05-18 · Gallatin, Illinois

Wider weather episode

Patchy shallow dense fog formed over much of Southern Illinois during the early morning hours of the 18th. Surface winds were weak with high pressure moving in, while temperatures cooled to the crossover temperature. Surface moisture was plentiful with recent rainfall. Greater coverage/duration of fog occurred near rivers, such as at Carbondale ASOS.

Source: NOAA Storm Events Database, event_id 1179068. Narrative written by the NWS forecast office that issued the report.