Most of the exciting weather that botch up across the United States open east of the Rocky Mountains . The West Coast has a report for relatively boring , stable atmospheric condition compare to the dateless torrents out east , but every once in a while they ’ll get a storm that tears into the coast as hard as a hurricane . This week , the Pacific Northwest will deal with two such storms slamming into the coast , one after the other . The first violent storm caused some bad weather on Thursday Nox and this dawn , while the second storm is expect to strike tomorrow , Saturday , October 15 , with even more furiousness than the one before it .
The narrative of these two storms is that they ’re roughly equivalent to class 1 hurricane hit the Pacific Northwest in speedy succession . We spend days and sometimes weeks focusing on much lesser storms reel around in the Atlantic Ocean , yet big , detrimental low - pressure nerve center twirl on the other side of the country get only a fraction of the attention . Each storm will have similar effects to a hurricane — negative winds , heavy rain , coastal flooding , and rough sea — and even though neither tempest is a hurricane by definition , they should be treated just as seriously .
The first storm approached the Northwest coast on Thursday Nox and Friday morning , focusing the brunt of its foul weather on Oregon and Washington to end the workweek . TheNational Weather Serviceoffice in Portland , Oregon , roll up widespread reportsof 55 to 65 mph wind gusts across western Oregon , which is enough to do some damage to Tree and power lines . Some of the gusts were even higher — an noble-minded weather post near the slide in Oceanside , Oregon , measured a wind blast of 103 mph on Thursday night . A few of the thunderstorm in Oregon even breed tornadoes , one of whichhit a small townabout 60 mile west of Portland on Friday morning .
If that was n’t unsound enough , another violent storm is on its way this weekend that count like it will be even solid than the first one . This Saturday ’s tempest , though not an existent hurricane , does have its roots in the tropics . The impending system will gather some of its strength by integrate the remnants of Super Typhoon Songda , a tropical cyclone that had 150 mph winds out in the westerly Pacific Ocean earlier this week . As the storm traveled into the higher latitudes , it lost its tropic characteristic and hobble a ride in the jet stream , speeding east across the entire ocean in just a couple of days . The tempest will also have plenteous moisture to work with due to an atmospherical river , or a current of recondite moisture that flow north from the tropical zone .
As we insure with the tempest on Thursday and Friday , strong wind will be the heavy threat this weekend . High idle words watches are in impression for coastal and inland area of northwestern California all the way to the Canadian borderline in Washington in anticipation of winds that approach hurricane force during the day on Saturday . This includes the city and suburbs of Portland , Oregon , and Seattle , Washington . Widespread twist gusts of 60 to 70 mph will knock down Sir Herbert Beerbohm Tree , sever power telephone line , and possibly cause damage to edifice . The wind might have an easy time tearing down tree because the filth is soaked and many trees still have their leaf , which creates a variety of parachute effect , see the wind and putting even greater stress on the tree diagram .
Several inches of rain are possible ahead of the system , with higher totals falling in mellow raising . Forecasters do n’t expect widespread flooding to be an issue , but some pocket-size flooding is potential as a consequence of freshly downed leaves clogging up sewage system and small brook .
The perpetrator behind the two hurricane - strength storms is an intense jet stream dipping over the northwestern United States . Winds in the jet flow are shout out along at nearly 200 mph , which creates acute lifting motion through the ambiance around the special K stream . Air speedily go up from the depressed level of the air as a consequence of this lift , creating a gist of low-toned pressing at the open . The strength of this finical jet current will provide the low - pressure system to farm outstandingly solid , which is why both systems have and will produce such strong winds .
The Pacific Northwest has an ugly history with detrimental windstorms . violent storm with this intensiveness occur every couple of years , and the violent storm forecast to muff ashore this weekend could grow tip gusts on equation with some memorable storm in recent years , include storm inDecember 2006andDecember 1995 .
