Boulder County will be under a red flag warning Thursday, and the Boulder County Sheriff’s Office has banned all outdoor burning.

The sheriff’s office announced in a tweet Wednesday evening that the ban represents a higher level of fire restrictions than the level one restrictions issued earlier this month that banned open burning in unincorporated Boulder County.

The red flag warning encompasses the entire county.

The National Weather Service is predicting a high temperature of about 89 degrees on Thursday with winds gusting to 15 mph.

John Bear: 303-473-1355, bearj@dailycamera.com or twitter.com/johnbearwithme