The Excessive Heat Watch has been upgraded to an Excessive Heat Warning by the National Weather Service for all of Northwest Oregon except for most of the immediate coastline. Record high temperatures are expected inland climbing to around 100F Tuesday, then heating up to 104-107F Wednesday and Thursday with the heat likely continuing on Friday with temperatures near 100F. Low temperatures are expected to remain warm, dropping only into the mid-60s to low-70s in the valleys. In the foothills and lower Cascades, overnight temperatures will remain very warm at night with lows only in the mid-70s to low-80s.
Temperatures will warm each day with significant heat by Tuesday. Wednesday and Thursday are expected to be the hottest days with record-setting temperatures and poor nighttime recovery. Friday could be another record-setting heat day and even Saturday will still be very warm with well above normal temperatures.
Central Coast highs are expected to be 70-75F Tuesday, 80-85F Wednesday, 70-75F Thursday, 70F Friday, and 65-70F on Saturday, then cooling to 60-65F by Sunday. Warmest temperatures will be in Lincoln City, with lower readings working south to Yachats.
The elderly, people without access to air conditioning and anyone engaged in prolonged outdoor activities will be particularly vulnerable during this heat episode. Local power demand is expected to be at high levels. 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 the 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. The Red Cross has a web page devoted to heat-related illnesses here.
An Excessive Heat Warning means that a prolonged period of dangerously hot temperatures will occur. Hot temperatures will create a dangerous situation in which heat related illnesses are likely. 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, even for short periods of time. This is especially true during warm or hot weather when car interiors can reach lethal temperatures in a matter of minutes.