The National Weather Service has issued a Heat Advisory for San Diego County Coastal and Valley Areas. Temperatures up to 100 degrees are expected. Hot temperatures may cause heat illnesses to occur. More forecast information and updates are available from the National Weather Service. Drink plenty of fluids, stay in an air-conditioned room if one is available, stay out of the sun and check up on relatives and neighbors by telephone, video conferencing or if in person, while adhering to social distancing recommendations to prevent the spread of COVID-19. Young children and pets should never be left unattended in vehicles under any circumstances. Take extra precautions if you work or spend time outside. When possible reschedule strenuous activities to early morning or evening. Anyone overcome by heat should be moved to a cool and shaded location.