Dense Fog in Hardin, Illinois

Dense Fog May 18, 2024 · Hardin, Illinois

The wider storm

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 1179065. Narratives are written by the National Weather Service forecast office that issued the report.

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