Aggregator

* 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...Eastern Portland/Vancouver Metro, Inner Portland Metro, and Inner Vancouver Metro. * WHEN...Until 4 PM PST Monday. * IMPACTS...Deteriorating 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. 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 issues for people with respiratory problems.

* WHAT...Visibility one quarter mile or less in freezing fog. * WHERE...Lower Columbia Basin of Oregon and Washington, Yakima Valley, and Foothills of the Blue Mountains of Washington. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

* WHAT...Visibility one quarter mile or less in freezing fog. * WHERE...Lower Columbia Basin of Oregon and Washington, Yakima Valley, and Foothills of the Blue Mountains of Washington. * WHEN...Until 10 AM PST this morning. * IMPACTS...Low visibility could make driving conditions hazardous.

* WHAT...A moderate risk of sneaker waves is expected. * WHERE...All beaches and shorelines of Douglas, Coos, and Curry counties. * WHEN...From Saturday evening through Sunday afternoon. * IMPACTS...Sneaker waves can run up significantly farther on beaches than normal, including over rocks and jetties. These waves can suddenly knock people off of their feet and quickly pull them into the cold ocean waters, resulting in serious injury or death. Waves may also lift driftwood logs, trapping anyone caught underneath. * View the hazard area in detail at https://www.wrh.noaa.gov/map/?wfo=mfr

* WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Warning, sub-freezing temperatures as low as 30 expected. * WHERE...South Central Oregon Coast. This includes the communities of North Bend, Port Orford, Myrtle Point, Powers, Reedsport, and Bandon. * WHEN...For the Frost Advisory, until 9 AM PST this morning. For the Freeze Warning, from 2 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

* WHAT...For the Frost Advisory, temperatures as low as 33 will result in frost formation. For the Freeze Warning, sub-freezing temperatures as low as 30 expected. * WHERE...South Central Oregon Coast. This includes the communities of North Bend, Port Orford, Myrtle Point, Powers, Reedsport, and Bandon. * WHEN...For the Frost Advisory, until 9 AM PST this morning. For the Freeze Warning, from 2 AM to 9 AM PST Friday. * IMPACTS...Frost and freeze conditions could kill crops, other sensitive vegetation and possibly damage unprotected outdoor plumbing.

* 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...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.