UPDATE, 12:30 p.m. | Much of Western Washington, including King, Snohomish and Pierce counties, will be under a flood watch starting early Tuesday morning and continuing through Thursday morning, according to the National Weather Service.
Skagit, Whatcom and Lewis counties also are included in the watch.
Heavy rains starting overnight on Monday could bring
½ to 1
¼ inches in the lowlands and up to 2 inches along the coast. There could be as much as 10 inches in the mountains, the NWS says.
The heavy rainfall could drive several rivers above the flood stage, including the Snoqualmie, Tolt, Stillaguamish, Middle Puyallup and the Nooksack. The NWS also recommends watching the Skagit, Snohomish and White rivers.
The heaviest rainfall will change its focus from the North Cascades to the south and back again, according to the NWS, making predictions tricky for rainfall.
A flood watch means conditions are favorable for flooding, but flooding is not imminent or occurring.
ORIGINAL POST | Rainy weather with mostly mild temperatures are forecast into Thanksgiving Day across Washington.
The National Weather Service expects heavy rain Tuesday: 1 to 2 inches in Western Washington and 3 to 6 inches on the west slopes of the Cascades.
With the snow level around 6,500 feet, minor flooding is likely on some flood-prone rivers: the Cowlitz, Puyallup, Snoqualmie, Tolt, Skykomish, Snohomish, Stillaguamish and Nooksack.
Forecasters say the weekend should be cooler and drier. The snow level will likely drop back down toward the mountain passes, bringing the chance of snow for drivers returning home from the holiday.
Snow could reach valley floors in Eastern Washington.
Winter-driving essentials from AAA
1. Warning devices (flares, triangles or other visual alerts).
2. First-aid kit.
3. Flashlight with new batteries.
4. Nonperishable food and water.
5. Blankets and warm clothing, including hat and gloves.
6. Jumper cables.
7. Abrasive material (sand or cat litter) or traction mats and a small shovel.
8. Ice/snow scraper for clearing car and windows.
9. Tire chains.
10. Cellphone and charger for making emergency calls.
For more tips to avoid road-trip breakdowns, see www.exchange.aaa.com.