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Stagnant Air Prompts Ongoing Advisories in Oregon, Idaho and Arizona

Officials urge vulnerable people to limit outdoor activity due to trapped pollution.

Santa Ana Winds Bring SoCal Advisories, Gusts to 50 MPH and a Midweek Warm-Up

NWS Warns of Black Ice and Patchy Fog in Eastern New York Until 7 A.M.

Brightline Taps Ex‑Eurostar Leader Nicolas Petrovic as CEO, Reassigns Reininger to Brightline West

Oregon Valleys Under Air Stagnation Advisory Through Sunday Morning

NWS Issues Dense Fog Advisory for Mojave–Lake Mead Region Through Early Friday

Dense Fog Advisories in Effect Early Monday for North-Central Pa. and Geneva County, Ala.

New Advisory Targets Colorado’s Sangre de Cristo Mountains as Early-Season Snow Persists Across Western Ranges

Las Vegas Issues Dust Advisory as Strong Southerly Winds Hit Tuesday

Dense Fog Advisories Blanket Parts of Pennsylvania This Morning With Visibility Down to a Quarter-Mile

Dense Fog Persists Into Midday Across Northern Michigan as Early Advisories Expire

NWS Issues Early-Morning Dense Fog Advisories Across Michigan’s U.P. With 1/4-Mile Visibility