Dense Fog Advisory issued December 19 at 8:14PM PST until December 20 at 11:00AM PST by NWS Sacramento CA
* WHAT...Visibility down to one quarter mile or less in dense fog. * WHERE...Carquinez Strait and Delta, Sacramento Valley, and the Northern San Joaquin Valley. * WHEN...Until 11 AM PST Friday. * IMPACTS...Low visibility could make driving conditions hazardous.
Special Weather Statement issued December 19 at 8:14PM EST by NWS Charleston SC
Areas of fog will impact portions of southeast Georgia and southeast South Carolina this evening, including Beaufort, Savannah and much of the I-95 corridor through southeast Georgia. The fog may be locally dense, reducing visibilities on area roadways to less than one quarter mile.
Air Stagnation Advisory issued December 2 at 8:14PM PST until December 5 at 4:00AM PST by NWS Portland OR
* WHAT...Light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...Foothills of the Northern and Central Oregon Cascades, North and Central Coast Range Valleys of Oregon, Lower Columbia River and Cowlitz River Valleys, Tualatin Valley, Outer Southeast Portland Metro, Willapa and Wahkiakum Lowlands, North Clark County Lowlands, and South Washington Cascade Foothills. * WHEN...Until 4 AM PST Thursday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems.
Freezing Fog Advisory issued December 2 at 8:14PM PST until December 3 at 11:00AM PST by NWS Portland OR
* WHAT...For the Freezing Fog Advisory, visibility one quarter mile or less in areas of dense freezing fog. For the Air Stagnation Advisory, light winds and limited air movement will lead to a period of stagnant air conditions. This scenario could result in the build up of air pollutants over time. * WHERE...South Willamette Valley, and East Central Willamette Valley. * WHEN...For the Air Stagnation Advisory, until 4 AM PST Thursday. For the Freezing Fog Advisory, until 11 AM PST Tuesday. * IMPACTS...Deteriorating air quality may cause issues for people with respiratory problems. Low visibility in areas of dense freezing