AREAS AFFECTED : TUALATIN VALLEY; WEST HILLS AND CHEHALEM MOUNTAINS; INNER PORTLAND METRO; EAST PORTLAND METRO; WEST COLUMBIA RIVER GORGE I-84 CORRIDOR; INNER VANCOUVER METRO; EAST CLARK COUNTY LOWLANDS; WEST COLUMBIA RIVER GORGE - SR 14
* WHAT...Dangerously hot conditions with temperatures of 95 to 100
degrees F expected.
* WHERE...Portland Metro Lowlands, Western Columbia River Gorge,
Portland West Hills and Chehalem Mountain, Inner Vancouver Metro,
and East Clark County Lowlands.
* WHEN...From 11 AM Sunday to 11 PM PDT Tuesday.
* IMPACTS...Heat related illnesses increase significantly during
extreme heat events.
* ADDITIONAL DETAILS...Peak heating days will be Sunday and Monday
with a slight cool down on Tuesday. Overnight temperatures will
remain elevated Sunday night into Monday morning, and Monday night
into Tuesday morning. Night time temperatures ranging from 63 to
67 degrees F will lead to poor overnight relief. There is
currently a 15-30% chance that night time temperatures remain
above 70 degrees F Sunday night into Monday morning, and a 5%
chance Monday night into Tuesday morning. There is a 40-60% chance
of high temperatures of 100 degrees F or more on Monday.