Aggregator

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Lower Columbia River and Cowlitz River Valleys, North Oregon Coast Range Lowlands, Tualatin Valley, Willapa and Wahkiakum Lowlands, and North Clark County Lowlands. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Eastern Portland/Vancouver Metro, Inner Portland Metro, and Inner Vancouver Metro. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Lower Columbia River and Cowlitz River Valleys, North Oregon Coast Range Lowlands, Tualatin Valley, Willapa and Wahkiakum Lowlands, and North Clark County Lowlands. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Eastern Portland/Vancouver Metro, Inner Portland Metro, and Inner Vancouver Metro. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...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...Foothills of the Northern and Central Oregon Cascades, and South Washington Cascade Foothills. * WHEN...Until 4 PM PST Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.

* WHAT...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...South Willamette Valley, and Central Oregon Coast Range Lowlands. * WHEN...Until 4 PM PST Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Lower Columbia River and Cowlitz River Valleys, North Oregon Coast Range Lowlands, Tualatin Valley, Willapa and Wahkiakum Lowlands, and North Clark County Lowlands. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...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...Portland West Hills and Chehalem Mountain. * WHEN...Until 4 PM PST Monday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Eastern Portland/Vancouver Metro, Inner Portland Metro, and Inner Vancouver Metro. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Lower Columbia River and Cowlitz River Valleys, North Oregon Coast Range Lowlands, Tualatin Valley, Willapa and Wahkiakum Lowlands, and North Clark County Lowlands. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Eastern Portland/Vancouver Metro, Inner Portland Metro, and Inner Vancouver Metro. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For the Dense Fog Advisory, until 11 AM PST this morning. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous.

* WHAT...Visibility around one-quarter mile or less in dense fog. * WHERE...Hood Canal Area, Bremerton and Vicinity, Seattle and Vicinity, Southwest Interior, and Tacoma Area. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

* WHAT...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...Foothills of the Northern and Central Oregon Cascades, and South Washington Cascade Foothills. * WHEN...Until 4 PM PST Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...South Willamette Valley, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Willapa and Wahkiakum Lowlands, and North Clark County Lowlands. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday. For the Dense Fog Advisory, until 11 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Watch fog spotty freezing fog and slick roads, especially rural areas of the Willamette Valley.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Eastern Portland/Vancouver Metro, Inner Portland Metro, and Inner Vancouver Metro. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For the Dense Fog Advisory, until 11 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Watch fog spotty freezing fog and slick roads, especially rural areas of the Willamette Valley.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...South Willamette Valley, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Willapa and Wahkiakum Lowlands, and North Clark County Lowlands. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Tuesday. For the Dense Fog Advisory, until 11 AM PST Thursday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems. Low visibility could make driving conditions hazardous. Watch fog spotty freezing fog and slick roads, especially rural areas of the Willamette Valley.

* WHAT...For the Dense Fog Advisory, visibility one quarter mile or less in dense fog, and freezing fog in spots across rural areas. or 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...Eastern Portland/Vancouver Metro, Inner Portland Metro, and Inner Vancouver Metro. * WHEN...For the Air Stagnation Advisory, until 4 PM PST Monday. For the Dense Fog Advisory, until 11 AM PST Thursday. * IMPACTS...Low visibility could make driving conditions hazardous. Watch fog spotty freezing fog and slick roads, especially rural areas of the Willamette Valley.

* WHAT...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...Foothills of the Northern and Central Oregon Cascades, and South Washington Cascade Foothills. * WHEN...Until 4 PM PST Tuesday. * IMPACTS...Poor air quality may cause issues for people with respiratory problems.