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Feels like it rained just a few days ago (it did), but Monday we dive straight into hot summer weather as a ridge of strong high pressure moves into the Pacific Northwest bringing the heat.

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Oregonian file photo

Monday’s temperatures will climb to 88 degrees under sunny skies. Some shallow marine clouds lingered along the coast Monday morning, but those clouds will quickly burn away, and even coastal areas are looking at extreme heating through Wednesday. Offshore flow will cut off any cool air from the Pacific and forecasters with the National Weather Service expect northern coastal towns to see their warmest conditions of the summer. Tuesday, Astoria could challenge its record high for the date of 88 set in 1894.

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NOAA

In Portland, Tuesday will be hot. The weather service has issued a heat advisory for almost all of western Oregon from 11 a.m. Tuesday through 8 p.m. Wednesday for temperatures ranging from 93-99 degrees. The official high at the airport will be 94, but some areas will warm above that estimate. The warmest temps will be in the afternoons and into the evenings. Overnight lows will struggle to get down to 65 degrees limiting the relief from daytime heating

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NOAA

Tuesday's highs

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Rosemarie Stein/Staff

The weather service warns that hot temperatures and limited relief overnight can increase the chance for heat related illnesses, especially for those who are sensitive to heat. People most vulnerable include those who spend a lot of time outdoors, those without air conditioning, those without adequate hydration, young children, and the elderly. Check on your neighbors and try to limit outdoor activities, especially in the afternoons.

Also make sure pets and livestock have plenty of fresh water and a place to get out of the sun.

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Oregonian file photo

A southerly wind reversal moving north up the coast from California late Tuesday night could bring temps down a few degrees for the southern Oregon coast Wednesday. Areas of the southern Willamette Valley near Eugene and Cottage Grove could see some cooling from this shift.

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Oregonian file photo

But northern areas will still be hot, if not hotter Wednesday. Portland will likely see at least 94 at the airport. Along with continued high temperatures, there’s a slight potential for thunderstorms near the Cascade crest Wednesday. Fire danger is high due to dry conditions, high temperatures and wind.

Some slight cooling is expected by Thursday. Until then, seek out your cooling spots.