The Bay Area Air Quality Management District is prohibiting wood burning through Friday, issuing another in a series of "Winter Spare the Air" alerts.

The alert, the fifth in a row and 20th announced by the district since Nov. 1, bars Bay Area residents from burning wood, fire logs, pellets or other solid fuels either indoors or outdoors. The ban lasts 24 hours.

First time violators are subject to a $100 fine or have the option of taking a wood-smoke awareness class. Repeat offenders can face fines of $500 or more.

The Winter Spare the Air program runs through Feb. 28. This season has witnessed a stretch of 11 straight days of alerts, a record for the district.

Contact Jeremy Thomas at 925-847-2184. Follow him at