The primary focus of today's discourse revolves around the significant meteorological phenomena currently impacting the Pacific Northwest and broader regions, particularly the atmospheric river event poised to unleash excessive rainfall and potential flooding through the evening. I shall elucidate the ongoing weather developments, including the implications of a powerful Pacific storm that is intensifying conditions across western Washington and Oregon. Furthermore, we will convey pertinent information regarding the hazardous winter weather conditions anticipated in Wyoming, Idaho, and parts of Montana, characterized by substantial snowfall and challenging travel conditions. In addition, I will provide updates on the recent magnitude 7.0 earthquake near the Alaska Yukon border, which has generated a sequence of aftershocks, albeit without any reported major damage. As we proceed, I will also address the anticipated geomagnetic storm, which may yield auroral displays further south and could impart minor impacts on power communications.
Takeaways:
The Pacific storm currently affecting the Northwest is causing significant rainfall and flood risks.
Western Washington and Oregon are expected to experience hazardous conditions due to heavy rain and river rises.
Wyoming, Idaho, and parts of Montana are facing challenging travel conditions due to winter weather impacts.
The magnitude 7.0 earthquake near the Alaska Yukon border has resulted in ongoing aftershocks but no major damage.
The National Weather Service has issued winter storm warnings and advisories for multiple states due to impending severe weather.
NOAA has issued a geomagnetic storm watch that may result in auroras and minor power impacts in the coming days.
A powerful Pacific storm continues funneling an atmospheric river into the Northwest today with the Weather Prediction center flagging areas at risk for excessive rainfall and flooding through tonight.
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If you're in western Washington or Oregon, expect periods of heavy rain, river rises and hazardous surface in the interior West.
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The same system drives winter weather.
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Wyoming, Idaho and parts of Montana face significant snow, wind and difficult travel through mid week over Alaska.
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Officials confirm Saturday's magnitude 7.0 Hubbard Glacier earthquake near the Alaska Yukon border.
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Aftershocks continue though no major damage is reported.
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Space weather could also be active.
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NOAA has a G3 strong geomagnetic storm watch valid Tuesday which may bring auroras farther south and minor power comms impacts monitor utility guidance finally, tropics are quiet.
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No active cyclones in either basin.
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Let's run through the states.
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Alaska Follow up today on the magnitude 7.0 Hubbard Glacier earthquake from Saturday.
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The Alaska Earthquake center reports widespread felt reports across Southeast and an ongoing aftershock sequence, but no tsunami threat and no major damage reported.
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Meanwhile, NWS Anchorage highlights fresh snowfall and gusty winds for the Copper river basin and Thompson Pass, Idaho.
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Southeast and eastern Idaho face accumulating snow and periods of high wind as the Pacific Storm pushes inland.
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The NWS Pocatello Hazard Board shows winter storm warnings and advisories in effect with a broader flood watch and wind headlines possible in adjacent zones.
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Montana High winds ramp up late today into Tuesday.
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NWS Billings highlights strong crosswinds for the western foothills and along I90 from Livingston to Big Timber and US 191 to Harlowton.
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Blowing snow is possible where showers line up with wind.
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High profile vehicles should delay or find alternate routes during peak gusts.
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Oregon coast and Valleys NWS Portland shows flood warnings and spots a coastal flood advisory and gale small craft advisories with the atmospheric river peaking today.
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Inland brief gusty winds may down small limbs.
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Washington Western Washington stays under the gun for flooding as the atmospheric river continues.
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NWS Seattle's hazards map shows flood warnings and watches.
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NWS Spokane highlights wind advisories and flood watches on the east side with mud rockslide potential on steep terrain.
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Wyoming Winter Storm warnings advisories are posted across western and central Wyoming with heavy mountain snow and areas of wind through Wednesday.
WYDOT reports extreme blow over risk and closures to some high profile vehicles on segments of i25 near Douglas Glendo with high impact travel messaging on i80 and US 287 191.
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All other states have no significant updates in the last 24 hours.
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We'll continue to track the Alaska aftershocks and Tuesday's geomagnetic storm potential.
