El Nino Watch Issued for 2017 / 2018
The National Weather Service Climate Prediction Center has issued a “El Nino Watch” for Fall – Winter of 2017 / 2018 and according to the Office of the Washington State Climatologist …
The expectation of El Niño development is evident in the seasonal forecasts from the Climate Prediction Center (CPC). The CPC October temperature outlook has higher chances of above normal temperatures for all of WA, with the chances of warmer than normal temperatures relatively high (at least 50% on a three-tier system). The September precipitation forecast indicates increased chances of below normal precipitation for the entire state.
The CPC October-November-December (OND) outlook is very similar to the October monthly outlook. The temperature outlook is calling for warmer than normal temperatures statewide, but with a lower probability than the October outlook. For precipitation, there are increased chances of below normal precipitationstatewide, with higher chances of below normal precipitation in eastern WA.