[1][2] The storm also brought heavy rains, producing widespread record flooding throughout the region, and was blamed for at least 18 deaths.

[7] Anticipating the storm, the National Weather Service issued its first-ever hurricane-force wind warning for the Oregon Coast.

[8] The first of the three separate storms arrived on December 1, accompanying frigid temperatures and up to 14 inches (360 mm) of snowfall in Washington.

The rapid rise in temperature caused the recent snow to melt quickly, indicating that record flooding was imminent across much of the region.

Many coastal residents did not receive warning of the severity of the wind event until after it had already commenced, illuminating a disconnect between Puget Sound (Seattle) television stations and the rural coast.

The storm later weakened across the Canadian Rockies towards central Alberta and traveled through the Midwest and Middle Atlantic states on December 4–5, where light snow fell in Edmonton, Minneapolis-St. Paul, Madison, Milwaukee, Chicago, Indianapolis, Cincinnati and most of the Ohio Valley.

Numerous streets and highways were flooded and impassable, including twenty miles (32 km) of the region's main north–south artery, Interstate 5 near Chehalis, Washington, that was closed for several days because of flooding from the Chehalis River, which was under about 10 feet (3.0 m) of water; the recommended detour added about four hours and 280 miles (450 km).

[9] Along the Oregon Coast, both landline and cellular phone service remained out for several days due to damaged cables.

[22] On December 3, Oregon governor Ted Kulongoski declared a state of emergency for Clatsop, Columbia, Tillamook, and Yamhill counties.

[18] On December 11, the Oregon Department of Transportation closed U.S. Route 30 five miles (8 km) west of Clatskanie due to landslide danger by debris-clogged Tansy Creek.

[23] As of December 21, 2007, Washington, Clatsop, Columbia, Polk, Tillamook, and Yamhill counties were eligible for federal disaster aid.

[29][30] Late in the afternoon on December 3, the flooding of the Chehalis River forced the closure of Interstate 5 in the Chambers Way area, and by the next day a 20-mile (32 km) stretch of the freeway was covered by as much as ten to fifteen feet (3–5 m) of water in locations.

As of December 22, 2007 Clallam, Grays Harbor, King, Kitsap, Lewis, Mason, Pacific, Snohomish, and Thurston Counties were eligible for federal disaster aid.

Across British Columbia, several thousand homes and businesses lost power, extensive rains of well over 100 millimetres (3.9 in) and melting snows caused extensive flooding, and 15 homes were evacuated because of a rapidly rising river filled with debris near the Sea-to-Sky Highway in Strachan Point north of Vancouver.