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Atmospheric river expected to bring a series of storms into next week

WHATCOM COUNTY, Wash. — Forecasters with the Seattle office of the National Weather Service issued a hydrologic outlook statement today, Thursday, February 20, 2025, due to an expected series of storms that will impact western Washington beginning Friday and continuing through Tuesday.

A series of storms will begin to impact western Washington on Friday and continue through Tuesday. The next storm on Saturday will have heavy rain at times as will a third storm right on its heels Sunday.

Precipitation amounts could be 3 to 8 inches storm total with snow levels rising above 6000 feet. With moderate temperatures now and warmer temperatures to come, this will also result in a some snow melt at low to mid elevations. These factors will combine to result in a potential for river flooding. At this time the most likely flood severity will be minor flooding.

There is also a Flood Watch out for Mason County, including the potential for moderate flooding on the Skokomish River.

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The most likely areas for river flooding will be for rivers flowing off of the central and southern Washington Cascades, the Olympics, and in southwest Washington. Urban and small stream nuisance flooding and rainfall-induced shallow landslides will also be possible.

– National Weather Service (February 20, 2025)

Plot of vertically integrated water vapor analysis forecast for February 22, 2025, based on ECMWF forecast model. Source: Center for Western Weather and Water Extremes
Plot of vertically integrated water vapor analysis forecast for February 22, 2025, as of February 20, 2025, based on ECMWF forecast model. Source: Center for Western Weather and Water Extremes

Current Nooksack River level forecasts show the river is currently at seasonably low levels. A noticeable increase in the river level is likely but, due to the low starting point, crests are expected to remain well below flood stages.

Currently forecast daily high temperatures and rainfall amounts for locations around Whatcom County are as follows.

LocationFriSatSunMonTues
Bellingham48/0.58″51/1.08″52/0.91″53/0.34″50/0.50″
Lummi Island47/0.37″51/0.83″52/0.77″51/0.13″50/0.29″
Sandy Point49/0.16″53/0.47″54/0.49″54/0.32″52/0.39″
Birch Bay47/0.61″51/1.15″52/0.97″53/0.34″51/0.50″
Blaine48/0.60″51/1.15″53/0.97″54/0.34″52/0.50″
Point Roberts46/0.60″49/1.13″49/0.96″49/0.34″49/0.50″
Ferndale48/0.45″52/1.22″53/1.01″54/0.34″52/0.50″
Laurel49/0.46″53/1.22″54/1.01″54/0.34″52/0.50″
Lynden48/0.67″52/1.37″53/1.13″53/0.34″51/0.50″
Sumas47/0.73″52/1.53″52/1.20″53/0.34″51/0.50″
Everson/Nooksack49/0.67″53/1.37″54/1.13″54/0.34″52/0.50″
Maple Falls47/0.68″50/1.49″52/1.08″54/0.34″50/0.50″
Glacier46/0.80″49/1.43″49/1.33″49/0.67″46/0.68″
Deming49/0.61″52/1.58″54/1.11″55/0.34″52/0.50″
Acme47/0.71″50/1.16″50/1.11″51/0.34″48/0.50″
Sudden Valley45/0.71″48/1.16″49/0.93″49/0.13″47/0.29″
meteoblue weather forecast as of 4pm on February 20, 2025

Whatcom News readers are encouraged to stay up to date with current weather alerts and forecasts and air quality readings for their specific Whatcom County locations along with tide tables via the Whatcom News Weather page.


River level forecasts can change frequently so motorists and property owners are advised to monitor the Nooksack River level forecast.


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