Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along the Northeastern Seaboard. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

On Monday July 15 NWS offices in Colorado will begin officially issuing Air Quality Alerts in partnership with Colorado Department of Public Health & Environment (CDPHE). CDPHE's Air Pollution Control Division, in tandem with Colorado's Air Quality Control Commission (AQCC), are responsible for the protection of public health and the improvement of air quality in the state. When CDPHE issues an Ozone Action Day or other alert, the NWS will relay that information to the public via our Air Quality Alert. Check our website at www.weather.gov/bou and look on the map for the affected regions.

Image of NWS website depicting Air Quality Alert areas in gray.

Example of Air Quality Alert (in gray)

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Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

NWS to issue Air Quality Alerts beginning Monday July 15.