Effective March 1, 2022, the criteria for issuing River Flood Advisories within the hydrologic service area of the NWS Chicago office will change. On and after the effective date, River Flood Advisories will only be issued on a situational basis. Presently, they are issued any time water levels are expected to reach Action Stage but remain below Minor Flood Stage.

December 10, 2021: Scattered Severe Winds in the Area & EF-0 Tornado in Lake County, IN

Published 2021-12-11

November and Fall 2021 Climate Summary

Published 2021-12-03

Thank You to All Weather Spotters - Skywarn Recognition Day 2021

Published 2021-12-03

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