Gann Fire Swells to 310 Acres as Red Cross Opens Valley Springs Shelter

Q: What mysterious spark ignited the Gann Fire, causing it to explode to over 1,800 acres overnight while injuring a first responder?

The spark that ignited the Gann Fire has not been identified. Officials say the cause remains under investigation. What is known is that the fire broke out Monday evening near Hogan Dam Road and Gann Road in the Valley Springs/New Hogan Lake area, then raced through dry grass and brush. It grew from roughly 30 acres to 310 acres within hours and expanded overnight to about 1,800 to 2,100 acres, with 0% containment reported in the latest updates. The overnight growth was driven less by any newly reported ignition source than by fire conditions on the ground: dry fuels, rapid spread, and challenging terrain. CAL FIRE updates said the blaze initially moved at a dangerous rate of spread before moderating, while more than 250 personnel, aircraft, dozers, engines and hand crews worked through the night to slow it. One first responder was injured in a dozer rollover and taken for medical evaluation. Authorities did not indicate that the injury was related to the fire’s origin, only that it occurred during suppression operations. So, despite the dramatic expansion of the fire, there is no confirmed “mysterious spark” yet. The official answer remains that investigators have not determined the cause.

3 articles · Updated · mymotherlode.com · Aug 4

310 acres — up from about 30 acres at 5:42 p.m. — were mapped for the Gann Fire by 8:38 p.m., with crews working overnight to stop its forward progress.
Mandatory evacuations cover zones 147, 109, 139 and 110 as the vegetation fire burns near Hogan Dam Road and Gann Road in the Valley Springs area.
A Red Cross shelter opened at the Jenny Lind Community Center, 189 Pine Street in Valley Springs, for people displaced by the fire.
Hogan Dam Road at Silver Rapids Road was closed to give fire personnel and equipment access, while displaced livestock were directed to the Calaveras County Fairgrounds.