Sauyin yanayi na Oregon

Dangane da Rarrabawar yanayi na Köppen, yawancin Yammacin Oregon suna da Yanayin zafi na lokacin rani na Bahar Rum (ko nau'in Csb), wanda ke nuna zafi, lokacin rani mai bushe, da hunturu mai laushi tare da sauye-sauye da sararin sama. Gabashin Oregon ya fada cikin Yanayin sanyi mai tsaka-tsaki (ko nau'in BSk), wanda ke nuna yanayin bushewa.

Yammacin Cascade Range, hunturu yana da sanyi tare da ruwan sama mai yawa da dusar ƙanƙara na lokaci-lokaci. Yanayin zafi na iya zama sanyi sosai, amma kawai a wasu lokuta, sakamakon raƙuman sanyi na Arctic. Yankin hamada mai zurfi na jihar ya bushe sosai, tare da karancin ruwan sama, karin dusar ƙanƙara, hunturu mai sanyi, da lokacin zafi.

## Ruwan sama

Ruwan sama a cikin jihar ya bambanta sosai: wasu gangaren yammacin bakin teku suna kusa da inci 200 (5,100  a kowace shekara, yayin da wuraren da suka fi bushewa, kamar Alvord Desert (a cikin Inuwa mai ruwan sama na Steens Mountain) a gabashin Oregon, suna samun kusan inci 5 (130 . 

Tekun Fasifik, yanada iska mai cike da danshi da ke sama da ita, da kuma guguwa da ke tashi daga gare ta a kan gabar tekun Oregon, sune manyan abubuwan da ke haifar da hazo a jihar.  Yayin da iska mai danshi ta ke tashi daga gabas daga teku kuma ta ci karo da gabar Tekun, sai ta tashi da karfi, ta yi sanyi, kuma ta rasa danshi ta hanyar datse, wanda ke haifar da ruwan sama mai yawa.  Hazo mafi girma a cikin jihar yana faruwa a ƙafa 2,000 zuwa 4,000 (610 zuwa 1,220 m) sama da matakin teku a waɗannan tsaunukan bakin teku.  A ƙananan tuddai a bakin tekun, hazo ba ya da ƙarfi amma har yanzu yana samar da inci 60 zuwa 80 (1,500 zuwa 2,000 mm) a shekara..

A cikin Kwarin Willamette a gabashin Coast Range, guguwa "mai hurawa" daga Pacific yana riƙe da isasshen danshi don sauka daga 35 zuwa 45 inci (890 zuwa 1,140  a kowace shekara a cikin mafi yawan jama'a na jihar. Gabashin kwarin, iska mai guguwa ta sake tashi yayin da ta haɗu da Cascade Range, ta sake sanyaya kuma ta samar da kwantar da hankali a tsaunuka sau da yawa kamar ƙafa 3,000 (910 .  Tunda tsaunuka masu fitattun wuta a cikin kewayon suna da tsawo sosai - fiye da ƙafa 11,000 (3,400 m) a cikin yanayin Dutsen Hood  - mafi yawan ragowar danshi na Pacific ya faɗi a nan a cikin hanyar ruwan sama ko dusar ƙanƙara. 

Sauran kashi biyu bisa uku na jihar sun bushe, an rarraba su a matsayin tsaka-tsaki, tare da manyan yankuna da ba su karɓi fiye da inci 12 (300  a shekara. Ban da haka yana faruwa a tsaunuka mafi girma a cikin Blue Mountains da Wallowa Mountains zuwa arewa maso gabas, wanda ke samun inci 50 zuwa 80 (1,300 zuwa 2,000  a shekara.

A duk faɗin Oregon, lokacin rigar yana gudana daga Nuwamba zuwa Maris, lokacin da jet stream ya fi karfi a Arewacin Hemisphere. Ruwan sama bai kai a cikin watanni tsakanin hunturu da bazara ba: Afrilu zuwa Yuni a cikin bazara da Satumba da Oktoba a cikin kaka. A duk fadin jihar, watanni masu bushewa sune Yuli da Agusta, lokacin da danshi ya zo a lokacin tsawa da yamma, galibi a cikin duwatsu, kuma ba sau da yawa daga guguwa da suka kai ga iyakar arewa da yankunan da ke kusa.

### Snow

Snowfall a Oregon ya fi girma a cikin Cascade Range. Dangane da bayanai daga wuraren shakatawa na kankara da wasu tashoshin yanayi na hukuma, matsakaicin dusar ƙanƙara na shekara-shekara a cikin Cascades na iya kasancewa daga inci 300 zuwa 550 (760 zuwa 1,400 .  Mafi girman dusar ƙanƙara na shekara-shekara a cikin rikodin, 903 inci (2,290 , ya faru a Crater Lake a cikin Cascades a cikin 1950.  A cikin Blue Mountains na gabashin Oregon, jimlar dusar ƙanƙara na iya zama babba, tsakanin 150 da 300 inci (380 da 760 . A gefe guda, yawancin ruwan sama na hunturu a cikin Coast Range yana fadowa kamar ruwan sama, kodayake dusar ƙanƙara mai nauyi wani lokacin yakan faru.

A mafi yawan tsaunuka a Oregon, ƙasa sama da ƙafa 4,500 (1,400  an rufe shi da dusar ƙanƙara daga Disamba zuwa Afrilu. Gudun dusar ƙanƙara, wanda ya bambanta da tsawo da lokacin shekara, matsakaicin kimanin inci 50 zuwa 100 (130 zuwa 250  a cikin Cascades da inci 25 zuwa 65 (64 zuwa 165  a Dutsen Blue a ƙarshen Janairu; a ƙarshen Afrilu, suna raguwa zuwa inci 40 zuwa 120 (100 zuwa 300  a mu Cascades da 5 zuwa inci 45 (13 zuwa 114  a dins Blues. Glaciers sun kasance a duk shekara a kan wasu tsaunuka na Cascade sama da  m) sama da matakin teku.

Dusar ƙanƙara na shekara-shekara tare da matsakaita 1 zuwa 3 inci (2.5 zuwa 7.6 cm) a shekara, gami da shekaru da babu.  Gabaɗaya a cikin ƙasa, tsakanin Kewayen Teku da Cascades, dusar ƙanƙara gabaɗaya tana kaiwa inci 5 zuwa 10 (13 zuwa 25 cm) kowace shekara.  Gabashin Cascades, a cikin saitunan da ba na tsaunuka ba, jimillar shekara-shekara tana daga 15 zuwa 75 inci (38 zuwa 191 cm), ya danganta da wurin;  su ne mafi ƙanƙanta a yankin arewa ta tsakiya da kuma rafin kogin maciji a kudu maso gabas kuma mafi girma a cikin kwarin arewa maso gabas da kuma tudun tudu na yankin kudu ta tsakiya na jihar.

## Ma'auni lokaci

Baya ga zagayowar yanayi da hasken rana (fiye da lokacin rani, ƙasa da lokacin hunturu), manyan abubuwan da suka shafi yanayin zafi a Oregon sun haɗa da tasirin daidaitawa na Tekun Fasifik tare da bambance-bambancen haɓakar sararin sama, musamman Cascade Range.  Gabaɗaya, yanayin zafi a Duniya yana raguwa da kusan 4 °F (2 °C) a kowace ƙafa 1,000 (m300 m) yana ƙaruwa.  A duk tsawon shekara, manyan tuddai a fadin jihar sun fi zama sanyi fiye da ƙananan tudu.  Bugu da kari, Cascades, wanda ke gudana daga arewa zuwa kudu daga kan iyaka zuwa iyaka, gaba daya suna rike da dumbin yawan iskan Pacific a yammacin jihar da kuma yawan iska mai sanyi a gefen gabas.  Wannan yanayin da ake samu yana raguwa lokaci-lokaci lokacin da iska mai tsananin sanyi ta gangarowa cikin kwarin Columbia zuwa kwarin Willamette kuma yana rage yanayin zafi fiye da yadda aka saba daga Portland zuwa Eugene..&nbsp;&nbsp;

Oregon tana da yanayin zafi mai yawa, kodayake matsanancin abu ne mai wuya. An rubuta mafi girma a ranar 29 ga Yuli, 1898, a Hermiston, Oregon, kuma a ranar 10 ga Agusta, 1898, A duka Pendleton, Oregon da Redmond, Oregon, da kuma sau ɗaya a ranar 29 ta Yuni, 2021, a Pelton Dam. Dukansu suna gabashin Cascades, lokacin da zafin ya kai  ° F (48 ° C).  Mafi ƙasƙanci ya faru a ranar 9 ga Fabrairu, 1933, a Ukiah, kuma a ranar 10 ga Fabrairun, 1933, a Seneca, kuma a gabashin Cascades, lokacin da zafin ya sauka zuwa -54 ° F (-48 ° C).  Yawan zafin jiki a cikin Kwarin Willamette yana da sauƙi idan aka kwatanta da yankunan hamada na jihar, tare da yanayin zafi mai girma a ko sama da  ° F (32 ° C) wanda ke faruwa ne kawai sau biyar zuwa goma sha biyar a kowace shekara, kuma yanayin zafi mai ƙarancin ƙasa da  ° F (-1 ° C) kamar haka. Yankin da ya fi zafi a jihar shine kudu maso yamma; Jackson County shine wuri mafi zafi a jihar a lokacin rani.

### Manyan abubuwa

### Ƙananan Ƙananan

## Zaɓuɓɓukan jadawalin yanayi

## Dubi kuma

* Yanayin yanayi na Amurka
* Canjin yanayi a Oregon