Blizzard warning for the Cascades, wind alerts for Columbia Basin

A strong low pressure system and associated frontal boundaries are forecast to approach the Pacific Northwest from the northwest producing heavy precipitation and windy conditions throughout the region. Travel is expected to be difficult Monday evening through Wednesday with Cascade and Blue Mountain highways possibly being impassible at times. This system has prompted National Weather […]

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Christmas winter weather advisory for the Tri-Cities and Yakima

The National Weather Service has issued a winter weather advisory for the Columbia Basin and Yakima Valley from 10:00 Monday to 10:00 Tuesday. The Cascade Mountains also have an alert posted, but Walla Walla was left out of the advisory area. Light precipitation is forecast to spread from west to east across Eastern Washington and […]

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Cold season temperature inversions

From about November to February temperature inversions accompanied by low clouds and fog are a common weather feature in the Columbia Basin. These are not unique to the Columbia Basin with many valleys throughout the Western United States and the world also experiencing strong inversions, including the Salt Lake City area in Utah and Almaty, […]

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Fake monsoon bringing possible t-storms Monday and Tuesday

Showers were already being observed in the Columbia Basin and Yakima Valley before 04:00 Monday thanks to an upper level low pressure system centered near Central Oregon. This pattern is pulling moisture up from the southeast in a setup similar to what occurs during monsoon season late in the summer. I’m labeling it a fake […]

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Heat for the weekend, t-storms possible Monday

Ridging is building over the American West today into the weekend, leading to a regional heat wave in the Pacific Northwest. Above average temperatures are forecast for the Columbia Basin, though things aren’t looking quite as warm as they were originally expected. The Tri-Cities can expect a high in the mid 80s on Friday and […]

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Some clouds Wed afternoon with heat wave on tap this weekend

Tri-Cities weather May 10, 2023 Starting the day with just a few clouds moving about the Columbia Basin. A weak trough is forecast to pass overhead so that with daytime heating, cumulus development is likely starting midday for partly cloudy skies this afternoon. Scattered thunderstorms in the mountains will add some high clouds to the […]

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Rain showers and mostly cloudy Tue, heat wave this weekend

Tri-Cities weather May 9, 2023 An upper level low pressure system is moving eastward into the Northern Rockies Tuesday morning. Rain showers and isolated thunderstorms, mostly south of the Tri-Cities, will taper off into midday as the low moves deeper into Idaho. Maybe some clearing midday before clouds from mountain thunderstorms develop this afternoon. An […]

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Rain showers and breezy Friday, drier and warmer Saturday

Tri-Cities weather • Friday, May 5, 2023 Expect mostly cloudy skies throughout the day with off and on light rain showers. With the San Francisco low that drove our conditions most of the week having moved off toward the northeast, we no longer have warm moist air being pulled in from the south. This takes […]

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Increasing clouds Thu, t-storms tonight, breezy Fri

Tri-Cities weather May 4, 2023 Partly cloudy skies to start the day. These are mostly high clouds drifting north from thunderstorms in mountains to the south and east. Increasing clouds for the remainder of the day which will moderate highs compared to yesterday. Look for temperatures reaching the mid to upper 70s. The Storm Prediction […]

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Warm temperatures, strong t-storms create flood risk in Inland Northwest

Warm temperatures in the Inland Northwest this week have accelerated snowmelt. Broadly speaking, the snowpack in the Columbia River watershed remains healthy though it has dropped rapidly relative to climatological norms the last few days. Rapid melt periods are common during Spring and early Summer and the rate is likely to decrease into the weekend […]

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