* WHAT…Temperatures as low as 33 will result in frost formation.
* WHERE…Central and Southern Willamette Valley, Tualatin Valley,
Outer Southeast Portland Metro, Upper Hood River Valley, and North
Clark County Lowlands.
* WHEN…From midnight tonight to 9 AM PDT Friday.
* IMPACTS…Frost could harm sensitive outdoor vegetation. Sensitive
outdoor plants may be killed if left uncovered.