For a related historical perspective to the Montesano High School grandstand fire, Stewart Field in Aberdeen was also hit by a fire that destroyed the press box on top of the main grandstand. It occurred May 1, 1971. The alarm was transmitted by by phone and Box Alarm 555 located at Robert Gray School. Upon arrival by the first units, the entire press box and portions of the roof were fully involved. Firefighters had to attack it both from the field side and the the school yard at Robert Gray by laddering the structure with aerial and ground ladders. Fortunately, they managed to limit the spread of the fire protecting the main part of the home side grandstand structure. The fire was caused by an electrical failure in the pressbox area.
Olympic Stadium in Hoquiam is the only wooden grandstand in Grays Harbor that has a sprinkler system to protect the massive wooden structure. For another related perspective on grandstand fires: Early Sunday morning on June 14, 1970, the Western Washington Fair in Puyallup had its one, and only, fire. Many restaurants, the grandstand, part of the roller coaster, the art and floral buildings and some concessions were destroyed or damaged. The loss was estimated at $1.25 million.
For a horrifying example (which is available on Youtube), England had the granddaddy of them all at Bradford City stadium. It was the worst fire disaster in the history of British football and by far the worst grandstand fire in history. It occurred during a league match in front of record numbers of spectators, on Saturday, May 11, 1985, killing 56 people and injuring at least 265.
Aberdeen fire chief