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Lightning Alerts For Mercersburg, PA

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Snowfall forecast through Sunday A.M.

Winter's Snowy Wrath Blankets Northern Tier

The parade of snow will continue across the northern U.S. and Midwest into the weekend.

Weekend Weather Outlook

Weekend Weather Outlook

How to Measure Snow via NWS

How To Measure Snow

Weekly Drought Map for December 11, 2025

Hit-or-Miss Precipitation Leads to Mixed Drought Results

A strong cold-air-damming event from March 20, 2018.

Cold Air Damming - Cause And Effects

Story Image via pixabay.com

Winter Precipitation

Today's National Outlook

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