How much lowland snow will fall this Tuesday-Wednesday?

As advertised, another cold snap is about to take hold in the PNW. Cold air will filter into the region Sunday night into Monday and stick around for about a week. Scattered snow showers will be possible on Monday and Tuesday, but the most interesting period will be from Tuesday night into Wednesday when a

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Rain returns Tuesday; turning colder next week

Western Washington and Oregon will wake up to a frontal passage on Tuesday morning as a two week hiatus in rainy season comes to an end. Rain totals will be light, with a quarter-to-third of an inch of precipitation in the Portland and Puget Sound metro areas. The dry spell has resulted in about a

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Will more arctic air impact the western US next week?

Pleasant but chilly weather has been the story across the PNW this week as cold air remains entrenched across most of the western US. The latest 500 hPa anomaly map shows an active weather pattern across the US. The trough that was responsible or our cold and active weather has progressed eastward while another weak

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Arctic air moves into the PNW

After most of October featured summer-like weather across the PNW, an entire autumn season’s worth of weather has been packed into the past three weeks. The period since Friday has been especially newsworthy as an atmospheric river followed by a westerly wind surge caused widespread power outages on Friday night. Saturday night featured heavy snowfall

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Early November cold blast expected next week

In the central US, the weather occasionally flips from 75 degrees to snow in a matter of hours. In the PNW, we’ll have to settle for about three weeks. Given the summer-like heat and smoke in mid-October, the flip to an arctic intrusion in early November will be about as dramatic of a change in

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Significant heat wave headed for the Pacific Northwest

On average, the last week in July is the warmest and driest week of the year over much of the PNW. In 2022, it is poised to bring the hottest temperatures to much of the region since the historic heat wave of June 2021. Our global weather models, a true triumph of modern technology, have

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One of the coldest springs on record in the PNW

Meteorological spring (March-April-May) has come to an end, and it will go down as one of the coldest springs on record in Washington State. It also snaps a 10 year streak of springs falling in to the near-normal or above-normal category. A top-5 coldest spring in many locations Overall, spring 2022 was the 4th coldest

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Western US drought persists, water shortages intensify as the end of rainy season approaches

April 1 is traditionally considered the milestone date for evaluating winter rainfall and snowpack across the western US. Unfortunately, the winter of 2021-22 did little to relieve the drought that was already widespread across the western US prior to rainy season. The latest US drought monitor continues to show severe drought conditions (D2-D4) across 75%

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