River watch: Flood watch remains in effect as heavy rain arrives

Local area concern centered on Cowlitz River at Packwood and Randle

Posted Monday, December 8, 2025 7:24 am

This morning is the start of heavy rain systems moving through Western Washington through mid-week, with rivers expected to swell beyond their banks in many cases.

A flood watch remains in effect for Western Washington through the week.

Locally, river forecasts show the greatest area concern to be the Cowlitz River, which is currently expected to reach major flood status at Randle and Packwood.

The Newaukum, Chehalis and Skookumchuck rivers are also expected to rise dramatically, though not to the extent of the Cowlitz as of the latest modeling.

The graphs above were provided on Monday morning by the NOAA.

Here's the latest from Lewis County Emergency Management:

Strong Atmospheric River Arrives Monday – Local impacts expected beginning Monday morning, a strong atmospheric river will bring heavy rainfall, rising rivers, and increased landslide concerns across Lewis County.

According to today’s NWS briefing, all river forecasts have trended upward, and heavier precipitation has shifted back northward into the south/central Cascades — directly affecting the Chehalis and Cowlitz river basins.

What this means locally:

• Rising river levels are expected Monday evening through Wednesday.

• Widespread significant river flooding is expected across Western Washington, including the Chehalis and Cowlitz Basin.

• Urban/small stream flooding is possible in low-lying areas.

• Landslide risk is elevated in our foothills and steep-slope areas.

WIND ADVISORY FOR LEWIS COUNTY – MONDAY 7 AM TO 10 PM

A Wind Advisory has been issued for Foothills and Valleys of Thurston and Lewis Counties, including Chehalis, Centralia, Napavine, Winlock, Pe Ell, Mossyrock, and Morton.

• South winds 15–25 mph with gusts up to 45 mph

• Unsecured outdoor items may blow around

• Tree limbs may fall; isolated power outages are possible

Please consider securing outdoor decorations, garbage cans, and lightweight structures.

Sandbag Locations in Lewis County

• Chehalis – Main Sandpile (Open - Use side door to gain entry)

• 350 W Main St, corner of Main & Cascade (brick garage)

• Self-serve

• Bring your own shovel

• Kiona Shop – East Lewis County (Now Open)

• Self-serve

• Bring your own shovel

Additional sites will be added Monday.

Flood Timing for Lewis County from today’s NWS river outlook:

• Rivers may begin reaching flood stage as early as Monday evening

• The most significant flooding is expected Tuesday–Wednesday

• Mid-to-late week, flood risk continues to target the Chehalis and Cowlitz basins, including downstream communities

Residents in flood-prone areas should remain alert, monitor river gauges, and prepare now.

We will share all updated information with you as soon as it is available.

Please stay safe, stay aware, and ensure your family and neighbors are prepared for a very active weather pattern this week.

River watch: Flood watch remains in effect as heavy rain arrives

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