SEATTLE — Washington’s fire season has been quieter than normal, but relatively tame conditions may not last for long. Starting next week, eastern and central Washington may face temperatures well past 100 degrees, and as temperatures climb, so does fire danger. “As we’ve warmed up, that helps to dry everything out,” said Brandon Lawhorn, a National Weather Service meteorologist. “Fire danger does go up in these times when we see the heat come up.” The increased wildfire risk comes on the heels of a mellow start to Washington’s fire season, according to data from the Northwest Interagency Coor…