Dense Fog in Massac, Illinois

Dense Fog February 27, 2026 · Massac, Illinois

The wider storm

High pressure over southern Illinois allowed for clear skies and calm winds the morning of the 27th. Residual low-level moisture from a cold front that sagged south the previous day supported areas of dense fog during the early morning hours.

Source: NOAA Storm Events Database, event 1317409. Narratives are written by the National Weather Service forecast office that issued the report.

Tornadoes near your address

See every tornado that passed near a place you know, measured to its path.