Weather Alerts For Lake Arrowhead, CA

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH FRIDAY EVENING # DETAILS -------------------- WHAT Temperatures in the mid to upper 90s below 5000 ft MSL. WHERE San Bernardino County Mountains. WHEN For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening. IMPACTS Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. ISSUED AT Sunday, August 23, 2026 at 1:54 PM PDT ISSUED BY National Weather Service San Diego CA HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. # AREAS AFFECTED -------------------- San Bernardino County Mountains Including the cities of Big Bear Lake, Crestline, Lake Arrowhead, Big Bear City, Wrightwood, and Running Springs

# HEADLINE -------------------- HEAT ADVISORY REMAINS IN EFFECT UNTIL 10 AM PDT TUESDAY EXTREME HEAT WATCH REMAINS IN EFFECT FROM TUESDAY MORNING THROUGH FRIDAY EVENING # DETAILS -------------------- WHAT Temperatures in the mid to upper 90s below 5000 ft MSL. WHERE San Bernardino County Mountains. WHEN For the Heat Advisory, until 10 AM PDT Tuesday. For the Extreme Heat Watch, from Tuesday morning through Friday evening. IMPACTS Heat related illnesses increase significantly during extreme heat events. Hot temperatures may cause heat illnesses. ISSUED AT Sunday, August 23, 2026 at 1:54 PM PDT ISSUED BY National Weather Service San Diego CA HEADER URGENT - WEATHER MESSAGE # PRECAUTIONARY/PREPAREDNESS ACTIONS -------------------- Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. # AREAS AFFECTED -------------------- San Bernardino County Mountains Including the cities of Big Bear Lake, Crestline, Lake Arrowhead, Big Bear City, Wrightwood, and Running Springs