From NOAA National Weather Service   UNPRECEDENTED HEAT EXPECTED THIS WEEKEND INTO EARLY NEXT WEEK…   Strong high pressure over the Pacific Northwest will bring a stretch of unseasonably hot weather to much of southwest Washington and northwest Oregon.   Temperatures will already be in the low to mid 90s beginning Friday, but increase further to dangerous levels Saturday through Monday.

High temperatures will run 20 to 30 degrees above normal for late June at many locations, putting numerous daily, monthly and possible all-time high temperature records in jeopardy.   Overnight lows will also be unseasonably warm, limiting the amount of relief from the heat and contributing to increased risk of heat related illnesses. The heat is expected to peak Sunday, then gradually trending downward towards the middle of next week. However even next week will be 10 to 20 degrees above normal.  

WHAT…Dangerously hot conditions with temperatures in the mid 90s to low 100s expected. Overnight lows in the mid-60s to low 70s.  

* WHERE…In Washington, South Washington Cascades. In Oregon, Coast Range of Northwest Oregon, Central Coast Range of Western Oregon, Northern Oregon Cascade Foothills, Northern Oregon Cascades, Cascade Foothills in Lane County and Cascades in Lane County.  

* WHEN…From 10 AM Saturday to 11 PM PDT Monday.  

* IMPACTS…Extreme heat will significantly increase the potential for heat related illnesses, particularly for those working or participating in outdoor activities.  

* ADDITIONAL DETAILS…The hot daytime temperatures, combined with warm overnight lows, will result in high heat risk and heat related stress.  

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 911