Wildfire smoke from the Camp Fire in northern California brought widespread unhealthy air quality to the Central Coast and the Bay Area through late November. A persistent upper ridge over the eastern Pacific kept conditions fairly stagnant with light offshore winds ushering in smoke to the area. It was not until an upper trough brought a fresh air mass and precipitation that conditions returned to normal on November 21st. The poor air quality resulted in multiple events across the region being canceled, delays at major airports, and numerous closures of schools as well as places of employment.

Dense Smoke in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 09-NOV-18 09:00:00 to 09-NOV-18 15:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Unhealthy air quality from wildfire smoke prompted closures of all Santa Rosa city and Petaluma City schools https://abc7news.com/health/poor-air-quality-triggers-dozens-of-school-closures-in-bay-area/4653739/.

Dense Smoke in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 09-NOV-18 09:00:00 to 09-NOV-18 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Wildfire smoke forces school closures in the North and East Bay with football games postponed https://sanfrancisco.cbslocal.com/2018/11/09/camp-fire-smoke-bay-area-air-quality/.

Dense Smoke in EAST BAY INTERIOR VALLEYS, CALIFORNIA
From 09-NOV-18 09:00:00 to 09-NOV-18 18:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Wildfire smoke forces school closures in the North and East Bay including postponing football games https://sanfrancisco.cbslocal.com/2018/11/09/camp-fire-smoke-bay-area-air-quality/.

Dense Smoke in EAST BAY INTERIOR VALLEYS, CALIFORNIA
From 09-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.

Dense Smoke in EAST BAY HILLS AND THE DIABLO RANGE, CALIFORNIA
From 09-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.

Dense Smoke in SANTA CLARA VALLEY INCLUDING SAN JOSE, CALIFORNIA
From 09-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.

Dense Smoke in SANTA CRUZ MOUNTAINS, CALIFORNIA
From 10-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.

Dense Smoke in SOUTHERN MONTEREY BAY AND BIG SUR COAST, CALIFORNIA
From 11-NOV-18 08:00:00 to 11-NOV-18 15:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Broadcast Media

Poor air quality from wildfire smoke causes cancellation of Monterey Bay Half Marathon https://www.kion546.com/news/monterey-bay-half-marathon-canceled/856141506.

Dense Smoke in SAN FRANCISCO BAY SHORELINE, CALIFORNIA
From 09-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.

Dense Smoke in NORTH BAY MOUNTAINS, CALIFORNIA
From 08-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.

Dense Smoke in NORTH BAY INTERIOR VALLEYS, CALIFORNIA
From 08-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.

Dense Smoke in COASTAL NORTH BAY INCLUDING POINT REYES NATIONAL SEASHORE, CALIFORNIA
From 09-NOV-18 08:00:00 to 21-NOV-18 08:00:00 (PST-8)
Property damage: 0.00K
Crop damage: 0.00K
Reported by: Other Federal Agency

EPA reported unhealthy to very unhealthy air quality due to wildfire smoke.