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
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
Climatologically speaking, the second half of November is the peak of rainy season in the PNW. Practically speaking, the ebb and flow of the jet stream can occasionally bring weeklong respites from the rain at any time throughout the fall and winter. The dry spells rarely last more than a week and never as long
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
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
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
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
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
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%
A few weeks ago, it looked like cold and snow may have been finished for the winter, but longer range models held out a bit of hope for one last wintery period around the final week of February. Those projections turned out to be correct, as the PNW is currently experiencing a brief but potent
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