A new storm moving into British Columbia today will spark potentially life-threatening flooding in the storm-battered Pacific Northwest.According to Western Expert Meteorologist Ken Clark, “This is a particularly dangerous situation from the Cascades on west and also in extreme eastern Washington, northeastern Oregon and northern Idaho.”
Heavy rain will fall across the Pacific Northwest through tonight as Pacific moisture surges onshore ahead of a storm. Mild air flowing into the Northwest will push snow levels above 7,000 feet.
The heaviest rain will be directed at western Washington and northwestern Oregon, including Seattle and Portland. Two to four inches of rain today will add to totals received prior to daybreak.
The moisture rising in response to the higher terrain could produce between 4 and 8 inches of rain on the western slopes of the Cascades, with the potential for locally higher amounts west of the mountains.
The Severe Weather Center lists the numerous winter storm- and flood-related watches and warnings in effect from the Northwest coast to the eastern slopes of the northern Rockies.
The heavy rain will combine with runoff from melting snow to cause rapid rises of streams and rivers. Several waterways west of the Cascades are already nearing flood stages.
– An Oregon Perspective –
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