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WeatherTalk: Warm blob in the Pacific could impact fall weather here

This warm blob has been created by a large region of high pressure in the atmosphere.

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FARGO — An oceanic heat wave has been developing this summer in the northern part of the Pacific Ocean, south of Alaska. An area of the North Pacific about the size of Alaska is anomalously warm by about 7 to 8 degrees Fahrenheit. This warm blob has been created by a large region of high pressure in the atmosphere which, itself, has resulted from cooler-than-average tropical Pacific water temperatures from the ongoing La Niña, and it is likely to persist into the fall.

The blob's impact on our weather here in the Northern Plains and Upper Midwest is to raise the probability of warmer than average and drier than average conditions for the fall season. As with any long-range forecast, other global-scale impacts, such as an unexpected change in the ongoing La Niña, may develop which could supersede the impacts from this warm blob of ocean water.

Related Topics: WEATHER
John Wheeler is Chief Meteorologist for WDAY, a position he has had since May of 1985. Wheeler grew up in the South, in Louisiana and Alabama, and cites his family's move to the Midwest as important to developing his fascination with weather and climate. Wheeler lived in Wisconsin and Iowa as a teenager. He attended Iowa State University and achieved a B.S. degree in Meteorology in 1984. Wheeler worked about a year at WOI-TV in central Iowa before moving to Fargo and WDAY..
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