...EXTREME HEAT WARNING NOW IN EFFECT UNTIL 8 PM PDT FRIDAY... * WHAT...Dangerously hot and humid conditions. Afternoon temperatures 98 to 115. Major Heat Risk. * WHERE...Chuckwalla Mountains, Chocolate Mountains, Chiriaco Summit, and Joshua Tree NP. * WHEN...Until 8 PM PDT Friday. * IMPACTS...Increase in heat related illnesses, including heat cramps, heat exhaustion, and heat stroke. Heat stroke can lead to death. PRECAUTIONARY/PREPAREDNESS ACTIONS... An Extreme Heat Warning means that a period of very hot temperatures, even by local standards, will occur. Actions should be taken to lessen the impact of the extreme heat. 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 and drink plenty of water. 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. Public cooling shelters are available in some areas. Consult county officials for more details. &&