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Morgan Palmer's Weather Blog

Posted: 10:38 a.m. Friday, Nov. 16, 2012

Stormy weekend will impact Seattle and the Sounders 

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Jet stream moisture content on Monday
University of Washington
A forecast model from the University of Washington showing plenty of moisture (red) in the atmosphere in a stream of high-altitude winds directed at the Northwest on Monday.

By Morgan Palmer

A parade of wet and windy fronts off the Pacific will make for a messy weekend with strong wind at times and plenty of rain.

The mountains will also get occasionally heavy snow, especially above 5,000 feet.

 

The first shot of stormy weather hits Saturday

The first front approaches the coast by early Saturday morning.  As this nears, we'll have some showers around the region, but a pressure difference in the atmosphere will get winds ramping up during the morning.

Winds around the Puget Sound won't be very strong early in the day, but some spots will have wind gusts over 25mph.  Along the coast and to the north and west of Everett including the islands, winds will increase to 20 to 35mph with gusts over 40.   

The strongest winds will continue into the early afternoon before letting up ever so slightly.   Get ready for leaves to blow around!

Rain will increase over the area during the day Saturday with a good soaking around the Sound and in the mountains.    

Seattle, other areas around the central and south Sound, and the coast could see more than a half-inch of rain on Saturday, with lighter amounts from Everett north through the islands.

 

Weather will play a big role in Sunday's Sounders battle with their season on the line

Another batch of nasty weather will arrive on Sunday afternoon and last into Monday.   

Sunday will begin showery and breezy, but as another front nears, expect winds to get downright strong across all of Western Washington.  

By late afternoon, as the center of a potent low pressure cell moves into Vancouver Island (or possibly near the mouth of the Strait of Juan de Fuca), winds will reach their peak.  

Coastal winds and winds through Admiralty Inlet, southern exposures of the islands and areas like Anacortes and Bellingham will top out in the 40-50mph range as an average on Sunday afternoon and evening while winds of 20-30mph will be common around the rest of the area, including Seattle.

This isn't seriously damaging wind, but we could see some sporadic power outages as weak limbs or trees fall.

The Seattle Sounders have to win big on Sunday evening at CenturyLink Field to save their season.  

It will be wet and windy for the game, with the orientation of the stadium offering little opposition to the gusty southerly winds.   Wind could gust over 30mph in the stadium and rain will be driving at times.

It won't be the best weather for any soccer team, but I have to think this storminess gives our Sounders the advantage as they're certainly more used to playing in the rain than Los Angeles!   

 

Still windy into Monday as flood threat grows

A strong jet stream with winds aloft to 150mph will slam into the Northwest on Monday.

By then, the mountains will have already had inches of rain below about 4,000 feet with plenty of snow at many points above.

Lower elevations of the Olympic Mountains and north Cascades (below the snow line) could catch totals by late Monday of between four and seven inches of rain.  

This will likely send the Skokomish River into flood, and a Flood Watch has already been posted through Monday.  

There is a possibility of other rivers reaching minor flood stage as well.

The flood threat will continue to be better-defined through the weekend as forecast models pinpoint where the best moisture in the atmosphere will be aimed.

Stay tuned to KIRO 7 and KIROTV.com as we bring you the latest!

Join me at KIROTV.com Monday at 1 p.m. for an online weather Webchat.   You can also find me on Facebook and on Twitter @morganpalmer.

 

Morgan Palmer

About Morgan Palmer

Meteorologist Morgan Palmer serves as meteorologist for weekday editions of KIRO 7 Eyewitness News. Morgan began "chasing" storms as a Skywarn severe storm spotter while a teenager and continues to pursue severe storms when time permits.

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