Logo for U.S. National Weather Service Excessive Heat Warning Start End Monday, June 14, 10:00 AM PDT Saturday, June 19, 9:00 PM PDT Source: U.S. National Weather Service

 ...EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 9 PM PDT /9 PM MST/ SATURDAY...

  * WHAT...Dangerously hot conditions through at least Saturday. Temperatures are likely to exceed records both for highs and lows for many locations through Saturday. * WHERE...Portions of northwest Arizona, southeast California and southern Nevada. * WHEN...Until 9 PM Saturday. * IMPACTS...Extreme heat will significantly increase the potential for heat-related impacts such as dehydration, hyperthermia, heat cramps, heat stroke and exhaustion... particularly for those participating in outdoor activities or those without access to adequate cooling. Extreme risk of injury or death for those left in vehicles. * ADDITIONAL DETAILS...Several days of near-record or record breaking high and low temperatures will likely result in compounding effects of heat to much or all of the population. These conditions may linger through the weekend and an extension of this warning beyond Saturday may be needed as well. 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. 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. Know the signs and symptoms of heat exhaustion and heat stroke. Wear lightweight and loose fitting clothing when possible. To reduce risk during outdoor work, the Occupational Safety and Health Administration recommends scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location. Heat stroke is an emergency! Call 9 1 1.