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 NORTHWEST TREND BEGINS.....

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NW-SKYWARN
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Number of posts : 276
Age : 37
Location : Silverdale, WA
Registration date : 2009-08-01

PostSubject: NORTHWEST TREND BEGINS.....   Sun 11 Oct 2009 - 2:31

Here is a copy of a forcast from our friend at SEATTLE SKYWARN....


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[SKYWARN-Seattle] Significant Weather Impacts To Take Place Starting Tonight

Saturday, October 10, 2009 9:07 PM


From:
"Gregory Carstens"
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westcoastweather@yahoogroups.com


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skywarn-seattle@yahoogroups.com




Good evening everyone

Tonight is still progged to be quite cold into early tomorrow morning although wide spread frost is not expected. Tonights forecast lows of 27 at Olympia and 36 Seatac are about 1 degree below the record for October 11th so it is possible some sensitive plants in sheltered areas could be affected. NWS Seattle has a Special Weather Statement out covering this event.

The Special Weather Statement from NWS Seattle also hits on the idea of wetter and at times windy changes this next week beginning about Tuesday.

Taking a look at the latest surface weather charts from GFS model indicates a deep low will be heading toward the offshore waters of British Columbia by Tuesday into Wednesday. Progged central pressure on the surface charts takes it down to about 972 millibars but the low basically keeps any at least wind advisory winds mainly on the coast due to the low center staying fairly well offshore during the forecast period out 4 to 5 days from this writing.

Looking a little further into the extended forecast out to about day 7 and around the Oct 16-17 time frame another low pressure system spins up along the coast but this time much closer. This system on all coastal areas should be watched carefully because there is a chance at this time it could bomb out and become very windy over all of Western Oregon and Washington. This system looks at this time to be as strong as the first in the series but as mentioned above the low center could track much closer on the coast.

The first system has the potential to cause significant snowfall in the Southern to Central Washington Cascades on Monday night into Tuesday but for the most part both systems will have more rain than any snow as the snow level will still be quite high after Tuesday from between 6,000 to 8,500 feet. Flooding doesn't look to be a problem at this time as both systems are fairly quick moving and QPF fields remain small enough though each 3 to 6 hour forecast time frame.

Please take action now and prepare for any power outages or other potential inconvience that may take place and stay tuned to NOAA WX Radio and monitor the potential situation at the following offices....

www.weather. gov/seattle
www.weather. gov/portland
www.weather. gov/medford

Greg Carstens
NWS Seattle Spotter Pierce 3
CoCoRaHS WA-PR-6
Summit (Tacoma) WA.
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Marc
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PostSubject: Re: NORTHWEST TREND BEGINS.....   Sun 11 Oct 2009 - 12:07

Yeah buddy it's beginning to look alot like Christmas

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Marc
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