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06/24/2011

More Thunderstorms and Flooding Today in the NYC Area!

BUT! A Great Looking Weekend is Coming!!!

 

 

Good Morning,

As an upper-level low pressure system and trough axis both continue to slide across the Great Lakes this morning, there's

still quite a bit of moisture available in the Eastern Region today... High precipitable water values of 1.5 to 2 inches, combined

with a nearly stationary front draped across eastern Pennsylvania and central New Jersey, will maintain an environment ripe for

generating numerous showers and thunderstorms today... Any of the rain can result in flash flooding, and some of the heavier

thunderstorms may bring damaging wind gusts in excess of 60 mph... The Storm Prediction Center has placed a zone which

extends from near Albany, New York southward to the Outer Banks of North Carolina in their 'slight risk' category for severe

weather, and that includes every city which is located directly on I-95 between New Haven, Connecticut and Wilmington,

Delaware... We're assuming that clouds today will manage to break for some sunshine... Therefore, the instability generated by

both this and a parcel of upper-level energy which is expected to rotate around the trough axis early tonight will enhance

thunderstorm activity and intensity...

A complex of showers and thunderstorms during the night has been impacting much of northeastern and east-central

Pennsylvania, as well as northern and western parts of New Jersey and southeastern New York State... While the regional radar

mosaic will need to be watched very closely throughout the morning as well as this afternoon, this initial pulse is showing signs

of weakening very rapidly as of this writing, and it should completely move through the Tri-State Area prior to 5 a.m... This batch

of rain shouldn't be taken too lightly, since it'll tend to aggravate flooding that occurred in many of the same areas (with very

saturated ground) that happened yesterday... Temperatures today will obviously depend upon the amount of sunshine, and

will vary from the mid-70s in parts of southeastern New York and southern New England to the upper-80s in areas south of the

Mason-Dixon Line... Central Park registered a maximum temperature of 71 degrees yesterday, while Philadelphia's

International Airport was 88... While we can't guarantee another seventeen-degree gradient over a mere 92-mile span, today

could provide a similar kind of scenario, only with different numbers...

With the widespread showers and thunderstorms expected to wind down by midnight tonight, most skies will be partly or mostly

cloudy thereafter... Tomorrow, even though that cool front is expected to move offshore fairly early, there is still going to be

some chillier than normal air aloft lingering behind it, associated with the upper-level trough... So, daytime heating interacting

with this colder air in the upper atmosphere may just be enough of a 'trigger' to cause some widely-separated showers and

thunderstorms... The point we really want to emphasize is that this activity (in most cases) will be 'less widespread' than

today's... As a high pressure system builds into the region tomorrow night and on Sunday, it'll usher in some less humid air, and

Sunday appears as if it will be a RAIN-FREE day, with temperatures mostly in the lower-80s... Early next week, the ridge of high

pressure should begin to slide to the east on Monday, but it should still be dry... Then Tuesday, the next approaching front and

moisture that will be gathered up by it should lead to a few showers and a thunderstorm or two...

Have a good weekend !!!

Posted by WABC on June 24, 2011 | Permalink

Comments

Claire Keane

Bill I 'm having a surprise 50th for my husband tomorrow. At 5:30 and it's a lobster bake outdoors. Should I move it to Sunday

Tom VW

Hey Bill, you have basically lied about our forecast....again! You said it was going to be about 80 deg today and temperatures have barely reached 70 deg! Do me a favor, and stop lying about the forecast and be a little more truthful when you predict the forecast!

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