Heat Advisory issued June 17 at 2:42PM PDT until June 18 at 10:00PM PDT by NWS Sacramento Central Sacramento Valley; Clear Lake, Southern Lake County; Motherlode; Mountains Southwestern Shasta County to Northern Lake County; Northeast Foothills, Sacramento Valley; Northern Sacramento Valley; Shasta Lake Area, Northern Shasta County; Southern Sacramento Valley ...Brief period of hot weather to the northern and central Sacramento Valley on Tuesday... .A strong ridge of high pressure will bring temperatures up to around 10 to 15 degrees above average. While conditiions will remain warm through mid-week, Tuesday is expected to be the hottest day of the week. Widespread readings of 100 to 105 degrees are likely during the afternoon which may impact those who are more sensitive to exposure to the heat. ...HEAT ADVISORY IN EFFECT FROM 9 AM TO 10 PM PDT TUESDAY... The National Weather Service in Sacramento has issued a Heat Advisory, which is in effect from 9 AM to 10 PM PDT Tuesday. * TEMPERATURE...Highs 100 to 105 degrees. * IMPACTS...Prolonged exposure to the hot weather may increase the chances for heat exhaustion and heat stroke. The most vulnerable population includes the elderly, children, those without effective cooling systems nor adequate hydration, and outdoor workers. Interact with us via social media www.facebook.com/nws.sacramento www.twitter.com/nwssacramento A Heat Advisory means that a prolonged period of hot temperatures is expected and will create a situation in which heat illnesses are possible. Drink plenty of fluids, stay in an air-conditioned room, stay out of the sun, and check up on relatives and neighbors. 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 light weight 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.