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Plenty Of Sun As High Pressure Dominates The Skies
By
Joe Schumacher
Published Apr 9, 2014
Modified Apr 9, 2014
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By
Joe Schumacher
Published Apr 9, 2014
Modified Apr 9, 2014
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For the first time in a really long time the forecasted weather for our local area is very boring. A big high pressure system that stretches from Ontario down through Texas will be the dominant weather feature for the next couple of days. With the high over the Midwest today we'll see a northwesterly breeze, watch out for fires, and a high of 60 degrees. There's enough moisture in the air that a few cotton ball cumulus clouds might pop up this afternoon, but they will quickly dissipate toward sunset. With no clouds and calm winds as the high moves overhead, conditions will be perfect for radiational cooling tonight. In the city we'll see lows near 40 or maybe dipping into the upper 30s. Less urban areas, like the pine barrens on eastern Long Island could see lows in the teens.
The high pressure system will be centered east of the city tomorrow and that means a southwesterly breeze, no clouds, and a high again near 60. It also means we could be in for an Ambrose jet on Thursday. What's an Ambrose jet? We had no idea before reading this morning's forecast discussion, but about 15 times a year the larger-scale southwesterly breeze from a high pressure system gets enhanced by the sea breeze. The result is a localized, low-level area of high winds that can result in small craft advisories, enhanced rip currents and air traffic changes at JFK. Because a sea breeze depends on the temperature difference between land and sea, the Ambrose jet is most common in the warmer months but can happen any time of the year.
A cold front is expected to arrive and promptly stall over the region on Friday. A stalled front just begs for some rain showers, and the best chance for those showers will be Friday night. The rain, if any, should be gone by Saturday when we can expect a high in the mid to upper 60s. Sunday and Monday look to be in the same temperature range.
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Joe Schumacher
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