Frost Advisory

* WHAT...Temperatures of 36 degrees or lower will result in frost formation.

* WHERE...In Oregon, Clackamas County Cascade Foothills, East Central Willamette Valley, Tualatin Valley, West Central Willamette Valley, and Central Oregon Coast Range Lowlands. In Washington, North Clark County Lowlands.

* WHEN...From midnight tonight to 9 AM PDT Saturday.

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

* ADDITIONAL DETAILS...There is a 20-30% chance that temperatures will fall below 32 degrees, especially for locations that do not develop fog. Frost and freeze headlines are only issued through the growing season of April 1 through October 31. Therefore, frost or freeze headlines will not be issued beginning November 1, even though similar low temperatures are possible. Frost and freeze headlines will no longer be issued this growing season for the Upper Hood River Valley, southern Willamette Valley, south Washington Cascade Foothills, and north Oregon Coast Range as these locations have already experienced a hard freeze earlier in October.