Frost Advisory issued April 21 at 1:07PM PDT until April 22 at 9:00AM PDT by NWS Portland OR

* WHAT…Temperatures between 33 and 36 degrees will result in frost
formation.

* WHERE…Central and Southern Willamette Valley, Northern and
Central Coast Range Valleys and Mountains of Oregon, Foothills of
the Northern and Central Oregon Cascades, Lower Columbia River and
Cowlitz River Valleys, Tualatin Valley, Outer Southeast Portland
Metro, West Columbia River Gorge of Oregon above 500 ft, Willapa
Hills, North Clark County Lowlands, and South Washington Cascade
Foothills.

* WHEN…From midnight tonight to 9 AM PDT Tuesday.

* IMPACTS…Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.