The latest:

  • Chiwaukum Creek Fire last listed at 6,638 acres; it is zero percent contained.
  • Highway U.S. 2 closed in both directions from Coles Corner to Leavenworth.
  • SR 20 closed east of Twisp. US 97 closed from Pateros to Brewster.
  • Northern part of Brewster is under a Level 3 evacuation.
  • Nearly 900 homes near Leavenworth are under a Level 3 evacuation.
  • A Red Flag Warning remains in effect until 11 p.m.

LEAVENWORTH, Wash. -- Fire officials said the Chiwaukum Creek Fire burning west of Leavenworth has grown to 6,638 acres and is zero percent contained.

Washington Department of Natural Resources says 860 homes are under a Level 3 evacuation near Leavenworth; Chelan County officials say the northern part of the town of Brewster was under a Level 3 evacuation. So far there were no reports of structures burned.

The fast growing Chiwaukum Creek Fire, part of the Mills Canyon Complex, has closed Highway U.S. 2 from Coles Corner to Leavenworth. U.S. 2 between Stevens Pass and Coles Corner is now open, which allows access to the Lake Wenatchee area via SR 207.

Chelan County Emergency Management officials say SR 20 is closed east of Twisp in both directions from milepost 206 at Finley Canyon to milepost 215 at the Loup Loup Pass Summit.

US 97 is closed from Pateros to Brewster. SR 207 and the Chumstick Highway are closed to all but local traffic.

Related: Wildfire crews, residents ready to mobilize at moment's notice

The Red Cross has set up a shelter at First Baptist Church in Leavenworth, at the Twisp Valley Grange in Twisp and at the Pateros Elementary School in Pateros. A shelter was set up at the Mercer Creek Church in Ellensburg for people impacted by the I-90 pileup.

Evacuation levels are changing. Check the Chelan County Emergency Management Facebook page or follow on Twitter for the latest on evacuations and road closures.

The fire's smoke plume, visible for miles, rose 25,000 feet into the air.

There's a huge cloud of smoke above us, Don Hurst, a retired firefighter who lives just outside of Leavenworth, said Thursday morning. The winds started to pick up a little. It's just like snowfall here with the ash coming down. It's fine ash. We're getting all this ash fall.

Related: Wildfire aerials captures flame, smoke nearLeavenworth

Red Flag Warning in effect until 11 p.m.

KING 5 Meteorologist Rich Marriott says from the top of Mission Ridge, looking down you'd normally see Wenatchee, but you're actually seeing all the smoke from eastern Washington right now.

More heat and wind gusts were forecast for Thursday and a Red Flag Warning was in effect until 11 p.m. Temperatures were expected to top 96 degrees with sustained winds of 10-20 mph and gusts up to 35 mph in the area Thursday.

As we head into the weekend, maybe as early as late Friday night or early Saturday, we may see a chance of showers moving into the north Cascades. That may assist firefighters farther into the weekend, said Marriott.

Related link: Check temps at weather stations east of Cascades

The fire, one of three that make up the Mills Canyon Complex, grew more than five times its size overnight Wednesday. Officials believe lightning sparked the wildfire on Tuesday; the cause is under investigation.

Mills Canyon and Kelly Mountain fires are also part of the Mills Canyon Complex. About 1,000 firefighters were on the lines at the Chiwaukum Creek fire. Mills Canyon near Entiat, the state's largest wildfire, was 40 percent contained and holding steady at about 35 square miles.

Kelly Mountain Fire, northwest of Entiat, is approximately 65 acres.

KING5's Jake Whittenberg, Elizabeth Wiley and Liza Javier contributed to this report.

[View the story "Mills Canyon Complex Wildfire - 7/17/14" on Storify]
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