Flood Warnings Extended Into Afternoon Around Oregon, the Coast

Published 12/19/25 at 2:55 a.m.
By Oregon Coast Beach Connection Staff

(Tillamook, Oregon) – The atmospheric river has been wreaking havoc much of the day around Oregon and Washington, with numerous areas experiencing flooding late Thursday. More of that is expected overnight, as the National Weather Service (NWS) extended flood warnings all over the northwest portion of Oregon. (Photo of flooding along the Siletz River this month courtesy Jenny Nelson)

The southern region has not been hit badly by floods, but high winds made their marks.

Flood warnings remain in effect through Friday afternoon for several rivers across Oregon and Washington. Impacted waterways include the Grays River near Rosburg, Hood River near Hood River, Siuslaw River near Mapleton, Nehalem River near Foss, Siletz River at Siletz, Wilson River near Tillamook, Cowlitz River at Kelso, Clackamas River at Estacada, Trask River near Tillamook, Marys River near Philomath, and the Luckiamute River near Suver.

This is not a complete list.

Among the worst areas at 2 a.m. Friday are around Johnson Creek and Clackamas River, the latter of which has caused a go-now order for some addresses near Molalla.

Forecasters say minor flooding is expected along the Trask River near Tillamook, where water levels are projected to rise above flood stage Thursday evening and crest near 18.9 feet before receding early Friday. Flood stage is 16.5 feet, and at 4 p.m. Thursday the river measured 14.8 feet. Officials warn that once levels exceed 19 feet, flooding is likely along the lower Trask, affecting dairy farms, buildings, and residences near Highway 101.

River levels along the Siletz River at Siletz are expected to rise close to major flood stage late Thursday and into early Friday morning. Should the river reach that threshold, evacuations may be necessary for homes and properties between milepost 2.5 and milepost 5 on State Highway 229, from Sunset Landing downstream to Coyote Rock.

Flooding along the Necanicum in Seaside in recent years - photo Angi D Wildt Gallery

“Stay tuned to local media sources and law enforcement information for details,” the NWS said. “We are also concerned for urban and small stream flooding this evening. Be sure to never drive through flooded roads. If you live along the Siletz River, have an evacuation plan in place.”

Some areas of the north Oregon coast also have coastal flood advisories in effect until 4 p.m. Friday, with the addition of tidal overflow being a possible problem in the areas of Florence, Yachats, Newport and Lincoln City into Manzanita, Cannon Beach and Astoria / Warrenton.

“Minor flooding and erosion, up to one foot above ground level, during high tides is expected in the low lying areas near bays, sloughs, and the lower reaches of the coastal rivers,” the NWS said.

Flooding has already created traffic issues just south of Seaside, and two areas around Tillamook are closed because of high water (as of midnight). Other spots are showing up on Tripcheck.com periodically because of high water creating traffic delays. Oregon Coast Highway, Coast Range Passes Traffic, Road Conditions

On the southern coast, conditions are not as severe, and there are no flood warnings yet. However, the NWS reports that heavy rain is expected across Coos, Curry, Douglas, and Josephine counties, leading to rapid rises on streams, creeks, and rivers in the region.

Smaller streams and creeks are likely to swell, creating nuisance flooding and ponding on roadways during heavier downpours.

Much of this week has not been too bad for the southern region, although heavy winds took down power in the Coos Bay area and Shore Acres State Park had to cancel its holiday lights tours. Oregon State Parks let ticketholders know individually.

Janice Langlinais, executive director of Coos Bay-North Bend-Charleston Visitor & Convention Bureau, said the winds made for one interesting situation.

“I almost got blown off my feet coming into the office this morning,” she told Oregon Coast Beach Connection.

In another somewhat humorous twist of irony, heavy winds at Cape Blanco brought down the wind speed-measuring equipment near the lighthouse, according to Cape Blanco Historical Society's Rebecca Malamud-Evans.

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