The following fires are all the result of lightning:
Cascade: (37 46.173 x 119 40.519; 7800'El., Mariposa Co., 6.15.12) The fire continues to show low to moderate fire activity. After recent ground observations, the fire is at 780 acres. The most active perimeters were on the north and northwest flanks. Most of the fire is creeping and smoldering in light brush and compact needle cast from the red fir forest. Three firefighters are assigned and the fire will continue to be monitored through the foreseeable future. Firefighters took actions to install a light handline between granite ridges to limit fire spread to the south and southwest. The line will also hold the fire from moving into denser fields of brush and tree stands, help limit smoke production, and keep the fire off trails and away from the Valley rim. Air quality has remained in the good range. The park's webcam, located at Crane Flat Helibase, captures fire images, which can be viewed at: http://ssgic.cr.usgs.gov/dashboards/WebCam.htm?
Ostrander: (37 37.801 x 119 34.420, 7,800' El. Mariposa Co., 8.17.12) This fire is in patrol status and was held to less than .10 acre.
Turner: (37 35.733 x 119 35.741, 7,800' El. Mariposa Co., 8.17.12) The fire is in patrol status. It was held to 2 acres, between Deer Camp and Chilnualna Falls.
Cold: (37 55.038 x 119 24.949; 8,200' El., Tuolumne Co., 8.14.12) A single tree was struck by lightning near the Glen Aulin trail in Tuolumne Meadows. This fire is in patrol status.
Coyote: (37 49.288 x 119 33.266, 8,500' El., Mariposa Co., 8.13.12) A single tree was struck by lightning, resulting in a 10 acre surface fire, and is in patrol status.
Grizzly: (37 43.731 x 119 32.643; 5,500' El., Mariposa Co. 8.12.12) The fire was near the top of Vernal Falls. This fire is in patrol status.
Firefighter and public safety are always the primary importance and consideration with all fires.