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Midweek storm system likely to bring widespread rainfall

It has been quite some time since our area experienced an area-wide moderate rainfall event. That looks to change during the middle of this coming week, as the remnants of Hurricane Patricia interact with another atmospheric dsiturbance over the Central United States. The resulting low pressure system will develop through the Great Lakes and into Canada, allowing the northward surge of moisture along the East Coast and toward our area on Wednesday.

Interestingly enough, the indirect impacts from Patricia will be enough to bust a pattern which had been continuously dry in our area. Moderate drought conditions continued in much of Northern New Jersey, NYC, Long Island and Connecticut to start this week, still lingering from the very dry summer months. New York City is still running 8″ behind the average seasonal rainfall total. This weeks rainfall event, then, may be “welcomed”.

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Clearing out late Sunday, cooler to start the week

Showers, clouds, and dreary conditions were widespread on Sunday morning as a cold front and associated moisture slowly made its way through the forecast area. The moisture and atmospheric forcing for precipitation will shift east of the area by early this afternoon, and as it does so, drier air will begin to filter into the area. This will help skies clear out during the afternoon hours. Mid level atmospheric temperatures will also still remain “warm”, with the coldest air lagging behind the cold fronts precipitation from this morning. So high temperatures on Sunday afternoon may actually be quite pleasant.

Colder air will begin to filter in to the area by Sunday Night into Monday morning, as mid and upper level atmospheric temperatures drop as well. With northerly winds taking over on Monday, high temperatures will struggle into the middle 50’s during the afternoon hours. It will feel quite brisk compared to the past few days, even with abundant sunshine expected. While the cooler temperatures are expected to continue through the early part of the work week, some moderation in temperatures is expected by Tuesday and Wednesday.

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Here’s how to see archived model runs of historic storms

The Blizzard of 2006 was a tremendous snowstorm in our local area. While it did fall in the middle of a warm and otherwise uneventful winter, it featured some tremendous dynamics and impressive banding. Do you remember what forecast models were showing prior to that event? Me neither. Up until now, it’s been fairly difficult to find archived model images dating back to the mid 2000’s, and even if you accessed them, the images were coarse and the graphics difficult to comprehend.

That has changed. Unknown to some, there is an easy and simple way to  access model data from the wildly popular free model data website at Penn State University. Known as “Ewall” to meteorologists and hobbyists alike, this website has been around for many years, and has served as a central hub for model data while remaining “new” to the times with upgrades and new graphics. The website also houses a freely accessible archive of model images dating back to 2004.

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A few showers tonight, cooler weather will follow

High clouds are streaming into the area this afternoon ahead of a low pressure system, which is located well to the west-northwest of our area. The associated cold front, however, will sweep through the Northeast States later tonight into early Sunday. After a generally pleasant Saturday, a period of unsettled weather is likely from Saturday Night into early Sunday morning, with moisture pooling along the cold front and aiding in the development of showers throughout the area.

This front will eventually swing east of the area by later on Sunday morning. Behind it, another shot of cooler air will make its way through the Northeast states. Mid level temperatures will drop by several degrees, and northwest winds will begin in earnest. But this won’t occur fully until later on Sunday evening — and so despite the cooling occurring in the mid levels of the atmosphere, high temperatures will end up being quite pleasant. After the showers on Sunday morning, in fact, temperatures will reach into the mid 60’s with abundant sunshine.

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