A heat advisory has been issued for much of the Puget Sound and Southwest interior. The National Weather Service says the advisory will be in effect from noon today (Saturday) to 8 PM Sunday. Forecasters are calling for temperatures to climb to the upper 80s to mid 90s today resulting in the warmest day so far this year. Overnight temperatures will also be mild and will mainly be in the upper 50s to mid 60s. It will be a few degrees hotter on Sunday with highs topping out in the lower to mid 90s. These conditions lure many people to area lakes and rivers. If you plan to be in or near open water, be water safe and wear a life jacket. If you work or spend time outside, take extra precaution. When possible, reschedule strenuous activities to early morning or evening. Know the signs and symptoms of heat exhaustion and heat stroke. Wear light weight and loose fitting clothing when possible and drink plenty of water. To reduce risk during outdoor work, it is recommended Scheduling frequent rest breaks in shaded or air conditioned environments. Anyone overcome by heat should be moved to a cool and shaded location immediately. Heat stroke is an emergency so call 9-1-1 immediately.