Excessive Heat Warning
Lower Columbia Basin of Oregon-Grande Ronde Valley-Wallowa County-
John Day Basin-Foothills of the Northern Blue Mountains of Oregon-
Kittitas Valley-Yakima Valley-Lower Columbia Basin of Washington-
Foothills of the Blue Mountains of Washington-
including the cities of Boardman, Hermiston, Ione, Cove, Elgin,
La Grande, Enterprise, Joseph, Wallowa, Dayville, John Day,
Mitchell, Monument, Spray, Pendleton, Pilot Rock, Ellensburg,
Thorp, Naches, Sunnyside, Toppenish, Yakima, Connell, Prosser,
Tri-Cities, Dayton, Waitsburg, and Walla Walla
855 AM PDT Fri Aug 10 2018
…EXCESSIVE HEAT WARNING REMAINS IN EFFECT UNTIL 8 PM PDT THIS
* TEMPERATURES…Highs of 98 to 108.
* TIMING…Through this evening.
* IMPACTS…Hot temperatures will increase chances for heat
related illness especially for those without access to air
conditioning. Heat stress is also possible for livestock and
An Excessive Heat Warning means that a prolonged period of
dangerously hot temperatures will occur. The hot temperatures
will create a dangerous situation in which heat 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.
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. Anyone overcome by heat
should be moved to a cool and shaded location. Heat stroke is an
emergency…call 9 1 1.