A tropical system off Mexico's coast has a 90% chance of becoming a hurricane, and forecasters say even a weakened storm could dump significant rainfall on the San Bernardino Mountains.
After nearly two weeks of triple-digit heat across the region, temperatures in Big Bear are forecast to settle into the high 60s and low 70s — and a tropical storm system could bring rain over the holiday weekend.
SCE is monitoring transmission lines serving Big Bear Valley Electric Service for a potential Public Safety Power Shutoff driven by forecasted high winds and elevated wildfire risk.
NWS San Diego has issued a Heat Advisory through 8 PM Friday for lower-elevation mountain areas, warning of dangerous temperatures and elevated risk of heat illness.
Forecasters are monitoring a pair of storms in the Pacific that could bring effects to California, including mountain communities like Big Bear Valley.