document: Three hours of steady rain Monday afternoon provided a much-needed edge for crews working to douse a blaze that seared 1,650 acres in Shoshone National Forest in Wyoming , and rainfall in neighboring Yellowstone National Park calmed three smaller fires there . Meanwhile , illegal fireworks were blamed for causing a blaze that raged across 2,200 acres near Yosemite National Park in California over the weekend , and firefighters brought a four-day fire in Michigan 's Hiawatha National Forest under control Monday after the blaze consumed more than 1,100 acres . About a quarter-inch of rain helped to keep the lightning-caused Shoshone fire 's growth to about 200 acres overnight , said fire information officer Dave Damron . But the nearly quarter-inch of rain that fell Monday held it to 1,650 acres , he said . The rain also allowed officials to cancel a 100-man patrol planned for Monday night . `` The forecast for the next two or three days is dry , with lower humidities and conditions more favorable to burning , '' said Damron . `` But this provides a real good reprieve and a chance to reinforce the lines and complete lines that we do n't have yet . '' Four 20-person firefighting crews from Colorado , Utah and South Dakota were expected to arrive at the fire by Monday night , putting the total number of firefighters at about 430 . Crews were attacking the fire from both the ground and the air , Damron said , as four helicopters and three air tankers dropped chemical retardant and water on the spreading flames . On the ground firefighters were aided by six engines and four bulldozers . Meanwhile at Yellowstone , park spokeswoman Amy Vanderbilt said that because the three fires there all were in the backcountry , no firefighters were trying to douse the flames . Because of the fires , park officials Sunday had closed off some areas , but Vanderbilt said Monday the rain had allowed the reopening of the areas to hiking and camping . The cause of the fire near Stanislaus National Forest , near Yosemite , was a `` bottle rocket , '' said the forest 's spokeswoman , Mary Hale . Firefighters , aided by lower temperatures and higher humidity , reported the smoky blaze 90 percent contained Monday afternoon and hoped to have a line surrounding the fire early Tuesday morning , Hale said . The fire was the largest so far this year in the forest , which was the scene of huge wildfires last summer . At least 60 Forest Service firefighters brought the Hiawatha forest fire under control Monday , spokesman Dale Bluedorn said from the national forest 's headquarters in Escanaba , Mich. . `` We 're going to start releasing crews from this fire , '' Bluedorn said . `` We 'll continue to patrol the area to make sure we did n't miss any hot spots . '' Bluedorn said continued hot , dry weather means it could be weeks before the fire is extinguished . `` It may not be declared out until there 's a three-day rain , '' he said . The Fourth of July was no holiday for firefighters from national forests in Wisconsin , Minnesota , Idaho and other states who were shipped to Michigan 's central Upper Peninsula to battle the Hiawatha blaze , Bluedorn said . Forest Service officials , meanwhile , began assessing damage to the 920 acres of national forest and 210 acres of private woodlands burned after the fire broke out Friday afternoon , Bluedorn said . Investigators have ruled out lightning as the cause .
extractive_keyphrases: forest fire steady rain wyoming illegal fireworks firefighters wildfires blaze