Cold Weather Chills the Nation Down to the Gulf
Extreme cold paired with their wind chill values will shiver much of the nation.
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Weather Alerts For Nyssa, OR
Air Stagnation Advisory
-URGENT - WEATHER MESSAGE National Weather Service Boise ID 1049 AM MST Sun Dec 14 2025 Lower Treasure Valley-Oregon Lower Treasure Valley- Including the cities of Nyssa, Ontario, Caldwell, and Nampa 1049 AM MST Sun Dec 14 2025 /949 AM PST Sun Dec 14 2025/ ...AIR STAGNATION ADVISORY REMAINS IN EFFECT UNTIL 5 AM MST /4 AM PST/ TUESDAY... ...DENSE FOG ADVISORY WILL EXPIRE AT 11 AM MST /10 AM PST/ THIS MORNING... * WHAT...An extended period of stagnant air, with light winds and little vertical mixing. This is due to an inversion near the surface that will continue to trap pollutants. * WHERE...Lower Treasure Valley Zones. * WHEN...Until 5 AM MST /4 AM PST/ Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. PRECAUTIONARY/PREPAREDNESS ACTIONS... Persons with respiratory illness should follow their physicians advice for dealing with high levels of air pollution during periods of stagnant air. &&
