Some 20,000 customers who lost power after a wild thunderstorm passed over the Casper area will likely be able to fire up their coffee makers this morning, as power was restored to all but 66 houses in Rawlins as of 9:30 p.m. Wednesday.

High winds and rain caused the power outage that darkened portions of the city at 5:40 p.m., Rocky Mountain Power spokesman Jeff Hymas said. At least two transmission lines in Casper were downed by the harsh weather, the utility said.

Wild weather also caused minor stream flooding that temporarily slowed traffic along Highway 220 near Goose Egg and Bessemer Bend roads on Casper's western edge, the National Weather Service office in Riverton reported.

As much as two inches of rain fell in parts of Bar Nunn and the Antelope Hills area near Casper, National Weather Service meteorologist Roger Smith said late Wednesday night, although those totals aren't official.

Golf-ball-sized hail was reported near Evansville as well.

The storm also cut power to 5,800 customers in Green River and Rock Springs before power was restored at 8:50 p.m., Hymas said.

A tornado warning was lifted Wednesday evening in Campbell County as well, the National Weather Service reported.

Casper's forecast today calls for a possibility of more showers and thunderstorms, with a potential drying out into the weekend, according to the NWS.