A strong autumn cold front is sweeping through the Midwest and mid-Atlantic, bringing a sharp drop in temperatures and leading to widespread freeze warnings and frost advisories.

Millions of residents are expected to face overnight lows dipping into the 20s and 30s from Wednesday night into Thursday morning, raising concerns for crops, home plumbing, and travel safety.

The National Weather Service (NWS) has issued freeze warnings for parts of Iowa, Illinois, and Nebraska, effective from midnight to 2 a.m. Thursday.

In central, north-central, southwest, and west-central Iowa, temperatures are forecast to range from 26 to 32 degrees, with widespread frost expected.

Areas in northwest Illinois and east-central and northeast Iowa could experience lows near 28 degrees.

In western Iowa

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