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SNE Convective/Thunder thread


free_man

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Too bad for today ... looking around at obs this early afternoon I'd have to say no to convection for a large chunk of the area. Too much stablizing influence on the N side of this boundary, which is subtly detectable by temperature variation but even more so by dew points. 50-50DP N of PSF - PVD line ain't cutting it relative to the other dynamics.

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Too bad for today ... looking around at obs this early afternoon I'd have to say no to convection for a large chunk of the area. Too much stablizing influence on the N side of this boundary, which is subtly detectable by temperature variation but even more so by dew points. 50-50DP N of PSF - PVD line ain't cutting it relative to the other dynamics.

agreed best chance of storms actually looks closer to NYC

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Too bad for today ... looking around at obs this early afternoon I'd have to say no to convection for a large chunk of the area. Too much stablizing influence on the N side of this boundary, which is subtly detectable by temperature variation but even more so by dew points. 50-50DP N of PSF - PVD line ain't cutting it relative to the other dynamics.

Yeah chance has shifted way south.

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agreed best chance of storms actually looks closer to NYC

I don't think that far SW but ...SW is better.

67F -type DPs exist in CT and even SW Mass is probably sufficient to include those areas.

Unless the boundary waffles up and gets better CAPE N of there, however, eh...

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Gee in fact ... I am noticing that there is higher surface pressures in Maine and New Hampshire than over the upper mid Atlantic region. As diurnal heating maximizes, it wouldn't surprise me if this boundary starts a-rollin' on backdoor like..

This is New England, so strike 1 on the 3 day thoughts isn't a surprise. The question is not how it could happen at any given time, it's what fresh hell will seemingly spontaneously emerge for the sole intent of preventing it - ahahahaha

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higher 850/925 dews are still advecting in from the west...so I think the cap will erode somewhat as BL moisture increases. I always thought this was a western MA/western CT type thing, anyway.

Yeah I never thought eastern areas were in the game so not a huge surprise though the boundary is definitely south of where it was modeled to be.

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higher 850/925 dews are still advecting in from the west...so I think the cap will erode somewhat as BL moisture increases. I always thought this was a western MA/western CT type thing, anyway.

Agreed...

As to areas N-E of the boundary, ...probably toast

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Welp mr Field, it will be interesting to see how all this pans out... Good opportunity for class room discussion:

...SEVERE THUNDERSTORMS POSSIBLE LATE THIS AFTERNOON INTO

TONIGHT ACROSS PORTIONS OF SOUTHERN NEW ENGLAND...

ATMOSPHERIC CONDITIONS ARE FAVORABLE FOR THE DEVELOPMENT OF STRONG

AND POSSIBLY SEVERE THUNDERSTORMS LATE THIS AFTERNOON AND INTO

TONIGHT ACROSS PORTIONS OF SOUTHERN NEW ENGLAND. THE MOST LIKELY

AREAS INCLUDE CONNECTICUT...WESTERN AND CENTRAL MASSACHUSETTS...AND

SOUTHWEST NEW HAMPSHIRE.

STORMS WILL BE TRIGGERED BY A COMBINATION OF A WARM FRONTAL BOUNDARY

MEANDERING ACROSS SOUTHERN NEW ENGLAND AND AN UPPER LEVEL

DISTURBANCE APPROACHING FROM THE WEST.

SEVERE THUNDERSTORMS PRODUCE LARGE HAIL...DAMAGING WINDS...AND ON

RARE OCCASIONS CAN PRODUCE ISOLATED TORNADOES. VERY HEAVY DOWNPOURS

WILL ALSO ACCOMPANY ANY STORMS LATE THIS AFTERNOON AND TONIGHT.

STAY TUNED TO NOAA WEATHER RADIO AND LOCAL MEDIA OUTLETS FOR THE

LATEST INFORMATION.

$$

FIELD

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Almost time for the ALY sounding :thumbsup:

It will be interesting to see what it shows. The spc meso analysis page would suggest that the area of storms in NY has eroded the EML or at least interupted its advection east. The best mid level lapse rates (7+) appear west of that area of convection.

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That sort of MCS remnant moving through southern NY in route to sw Mass and CT likely has a cool pocket of air associated that could serve as a trigger as the whole of if arrives over the next couple of hours. Otherwise, that feature could not be more perfectly wrong for it's time. It would move over and knock those areas out of contention, too.

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I wonder if we actually see convective intiation in the Elmira area over the next few hours.

There has been nicely sustained moisture convergence in that area for at least the past few hours. Light east northeasterly winds at Ithaca post-MCS and southwesterly southwest of that boundary. Nice theta-e ridge building into the area too.

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Wow, I was bothering to actually look at the NAM bufkit Indices using the 12z input ... man, at 5pm over KBAF theres just this small slab of CIN around the 700mb level; if somehow a parcel were squeezed through that layer, there's nothing stopping 50,000 tropopause slammer. CAPEs are around 2,000 by 6pm, and Hel. isn't all that great. But that would be one of those deals where you see explosive CB growth if that cap gets punched by flow over hill tops or whatever.

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