Leaders in Williamson, Hays and Travis counties have approved outdoor burn bans, as Central Texas withers under extreme heat and arid weather this summer.

Travis County commissioners have banned outdoor burns in unincorporated parts of the county until Sept. 11. Travis County Chief Fire Marshal Tony Callaway cited an increased risk in fire potential because of worsening dry conditions. More information can be found on the county's "frequently asked questions" website here.

Hays County commissioners, following a recommendation from County Fire Marshal Scott Raven, reinstated a burn ban for unincorporated areas of the county.

"When the burn ban is in effect, all outdoor burning, even in burn barrels with or without lids, is prohibited," a statement from the county said. "Food grills with lids are allowed, but grill masters are encouraged to keep a water source nearby, and to never leave a grill unattended until coals are cool."

The Williamson County Commissioners Court also issued its burn ban Tuesday "for a period not to exceed 90 days and to authorize County Judge Bill Gravell to lift the ban when conditions improve," officials said.

The Williamson County burn ban prohibits:

• Burning of household yard waste, such as leaves, grass, brush and other yard trimmings.

• Burning to clear land of trees, stumps, shrubbery, or other natural vegetation.

Violations are a considered a Class C misdemeanor punishable by a fine up to $500.

Temperatures in the Austin area are expected to climb into the triple digits all week and into the weekend, with nary a chance of rain in sight, the National Weather Service says.