Dense Fog Advisory issued November 29 at 6:03PM MST until November 30 at 5:00AM MST by NWS Great Falls MT
* WHAT...Visibility less than one half mile or less in dense freezing fog. * WHERE...Cascade County below 5000ft and Western and Central Chouteau County. * WHEN...Until 5 AM MST Saturday. * IMPACTS...Low visibility could make driving conditions hazardous.
Dense Fog Advisory issued November 28 at 1:27PM PST until November 29 at 12:00PM PST by NWS Hanford CA
* WHAT...Visibility one quarter mile to as low as 200 feet or less in dense fog. * WHERE...A portion of central California. * WHEN...From 8 PM this evening to noon PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous.
Dense Fog Advisory issued November 28 at 8:22AM PST until November 28 at 11:00AM PST by NWS Portland OR
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. For the Air Stagnation Advisory, a persistent inversion with light and variable winds will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants near the surface over time. * WHERE...Central Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous. Deteriorating air quality may cause
Dense Fog Advisory issued November 27 at 9:38PM PST until November 28 at 9:00AM PST by NWS San Diego CA
* WHAT...Visibility one quarter mile or less in dense fog at times. * WHERE...Orange County Coastal Areas and San Diego County Coastal Areas. * WHEN...Until 9 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. * ADDITIONAL DETAILS...Fog will occur at times from the beaches east over higher coastal terrain and into the valleys. Most areas will clear by 9 AM Thursday.
Dense Fog Advisory issued November 27 at 8:37PM PST until November 28 at 10:00AM PST by NWS Portland OR
* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog. For the Air Stagnation Advisory, a persistent inversion with light and variable winds will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants near the surface over time. * WHERE...Central Willamette Valley. * WHEN...For the Dense Fog Advisory, until 10 AM PST Thursday. For the Air Stagnation Advisory, until 4 PM PST Tuesday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.