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7/4-7/5 Heavy Elevated Convection Discussion/OBS


bluewave

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None of these threads are meant to be IMBY specific. It just means that the possibility of heavy rains leading

to flash flooding and possible severe could occur in the Philly or NYC Metro NWS forecast zones. The

science just isn't there to pin it down to something more specific before we get to the range of the meso

models like HRRR. We have a crossover of posters between Philly and NYC forums.

It was sarcastic.

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it happens every summer...some places see a deluge while 50 miles away gets a trace...the other night NW Jersey got clobbered while the city got less than an inch...the battle zone between the dry nw flow and the tropical air to the south has to shift a little more northward...sooner or later the tropical air will win out...

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That's OK. You never really know the exact jackpot spots ahead of time when convection is involved.

But we have had active events over the years with late night/early morning lows and warm fronts.

The Euro has a 4.58" max south of Long Island, but that could change in later runs.

So some spots coulld get a very heavy dump of rain and flood potential.

CAPE is low but shear and helicity is high. So there could possibly be isolated to a few

severe reports right where the warm front and low eventually tracks.

CAPE is only low because of timing. Need to get it here by 00z or shortly after.
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I doubt this trends south and likely to arrive quicker than projected.   Looks like scattered showers/storms between 5 - 8 then more widespread.  Not good those hoping for a nice fourth of July.  those rooting for a drenching may be in business.  Just a horrible time for it.

 

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Well we were lucky this year. 3 of the last 5 years were rained out and two years ago the rain date was rained out too.

Cheaper to do them on other nights than the 4th so most towns here are the 1st 2nd or 3rd.   The 1st was wiped out, last night was awesome here.  Comes down to luck.  

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