Long-lasting cool down coming?

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Meteorologists say a major category 5 typhoon that is punishing the coast of Japan this week may be strong enough to affect our weather here in South Jersey next week and beyond./Climate Prediction Center Meteorologists say a major category 5 typhoon that is punishing the coast of Japan this week may be strong enough to affect our weather here in South Jersey next week and beyond./Climate Prediction Center Meteorologists say a major category 5 typhoon that is punishing the coast of Japan this week may be strong enough to affect our weather here in South Jersey next week and beyond.

 Super Typhoon Neoguri’s strength peaked Monday, July 7 when its winds topped out at 155 mph before it weakened somewhat on Tuesday. Still, Neoguri’s sustained winds remained at 120 mph while the monster storm took aim at Japan.

More than 500,000 people along the low-lying areas of Japan’s eastern coast were told to evacuate their homes in preparation for Neoguri’s mid-week pass up the island nation.

South Jersey weather next week

But what happens next and how does it affect South Jersey’s weather?

Meteorologists and online bloggers have been abuzz with predictions that Neoguri was strong enough to put a snap into the east-west air currents of the northern jet stream. Just like the crack of a whip, Neoguri’s impact will cause a series of peaks and valleys to flow along the jet stream.

However, the biggest impact could come next week when the jet steam will buckle enough to allow seriously colder-than-normal air to sink out of the Canadian prairies and spill out over the Lower 48.

The National Weather Service’s Climate Prediction Center agrees, forecasting a great likelihood of colder-than-normal temperatures in the Midwest through July 22 at least.

How cold will it get?

Most locations in the Upper Midwest, Ohio Valley, through New York, Pennsylvania and New England could struggle to get much into the 70s for daytime highs for most of next week. Overnight lows will drop deep into the 40s, just perfect for late-night campfires.

Even as late as July 31, portions of the midwest could be as much as 3 degrees C. - or about 5 degrees F. - colder than normal, according to the NCEP CFS forecast model.

South Jersey impact

Here in South Jersey, the cold air invasion won’t be as extreme or as quick to occur. However, the Canadian chill may strong be enough to knock South Jersey daily high temperatures into the lower-80s and provide comfortable overnight sleeping weather later next week and into the following weekend.

Temperatures may be cool enough to help some people decide to turn off the air conditioning and save some money for a while.

Normal South Jersey mainland high temperatures for the first week of July are about 85 degrees at the Atlantic City International Airport in Egg Harbor Township, where the National Weather Service keeps official records. Add a few degrees if you live closer to Hammonton. Pull back a few digits if you reside closer to the Jersey Shore.

When will it end?

Areas of much of the central part of the United States could experience colder-than-normal temperatures on July 31, according to the National Center for Environmental Prediction Climate Forecast System./Weatherbell Analytics, www.weatherbell.com Areas of much of the central part of the United States could experience colder-than-normal temperatures on July 31, according to the National Center for Environmental Prediction Climate Forecast System./Weatherbell Analytics, www.weatherbell.com Long-term outlooks indicate a return to normal summer daily high temperatures may not occur until the end of July or the first few days of August.

Keep informed

As they say in the weather world, conditions change so check back often.

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