The La Sierra Fire, which started in Mexico, crossed the international border into Arizona at about 2:30 p.m. today, May 16. The fire is believed to be human caused but is of unknown origin.
Yesterday evening smoke was observed about one mile west of last week’s Triple 2 Fire. The current fire was observed in the area of La Sierra tank in Mexico, for which the fire is named. Firefighters were in position and began suppression when the fire crossed the border onto the Coronado National Forest this afternoon. Having burned approximately 320 acres on the Forest, it is generating a great amount of smoke that winds have been spreading northeast across Rio Rico.
Two hotshot crews and one smaller initial attack crew are assigned to the fire. They are being supported by three helicopters dropping water dipped from Pena Blanca Lake. Two additional crews and four more engines have been ordered and will be engaged tomorrow.
Visitors should be aware that heavy truck traffic from incident vehicles will be encountered along Ruby Road and in the immediate area. Pena Blanca Lake will be formally closed as soon as administrative directives are signed, but for safety reasons, it is functionally closed at this time. Forest users are encouraged to avoid the area for safety purposes, and to enable suppression and support operations to proceed with their work in a safe and efficient manner.
For further information on this incident please visit http://inciweb.nwcg.gov