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NOAA Forecast June-August: Normal-Above Normal Temperatures, Normal Precipitation
Posted on Friday, May 19, 2017 (PST)

A NOAA monthly climate briefing held Thursday provided a recap of April and outlooks through August that indicate a potential warmer and drier summer for Columbia Basin states.


While the rest of the country experienced a warmer-than-average April, and 388 consecutive months of above-global average temperatures and robust precipitation, the Pacific Northwest has been mired in cold, wet and snow, often well outside averages since last fall.


The upside of the nationwide weather as well as in the Northwest has been an abatement of drought conditions, to a point where only 5.6 percent of the contiguous United States has some degree of drought designation. No designations are active in the Northwest.


The El Nino Southern Oscillation forecast, which is based on ocean temperatures, calls for El Nino or “ENSO neutral” conditions as opposed to the La Nina climate influence that prevailed during the cold and wet conditions that have dominated for months.


Those observations come into play for the June one-month outlook, which calls for normal-to above normal temperatures, but above-normal precipitation is projected for eastern Idaho and western Montana.


The forecast for June, July and August predicts temperatures that are normal or above normal in the Columbia Basin and normal precipitation, with a trough of wetter-than-average weather shifting and covering much of the Midwest.

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