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JULY 2012 Severe Weather /Convection Discussion


NEG NAO

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Impressive rainfall totals especially over Suffolk County:

PUBLIC INFORMATION STATEMENT

SPOTTER REPORTS

NATIONAL WEATHER SERVICE NEW YORK NY

614 PM EDT SAT JUL 28 2012

THE FOLLOWING ARE UNOFFICIAL OBSERVATIONS TAKEN DURING THE STORM THAT

HAS BEEN AFFECTING OUR REGION. APPRECIATION IS EXTENDED TO HIGHWAY

DEPARTMENTS...COOPERATIVE OBSERVERS...SKYWARN SPOTTERS AND MEDIA FOR

THESE REPORTS. THIS SUMMARY IS ALSO AVAILABLE ON OUR HOME PAGE AT

WEATHER.GOV/NYC

********************STORM TOTAL RAINFALL********************

LOCATION STORM TOTAL TIME/DATE COMMENTS

RAINFALL OF

/INCHES/ MEASUREMENT

CONNECTICUT

...FAIRFIELD COUNTY...

BROOKFIELD 2.05 555 PM 7/28 MESONET

3 N DANBURY 1.81 557 PM 7/28 MESONET

1 E SHERMAN 1.27 535 PM 7/28 MESONET

DANBURY AIRPORT 1.21 430 PM 7/28 ASOS

...NEW HAVEN COUNTY...

2 NNE BRANFORD 1.47 530 PM 7/28 MESONET

1 ESE NORTH HAVEN 1.22 530 PM 7/28 MESONET

...NEW LONDON COUNTY...

1 ENE WATERFORD 1.09 542 PM 7/28 MESONET

NEW JERSEY

...BERGEN COUNTY...

1 SSE WOOD-RIDGE 1.42 538 PM 7/28 MESONET

WESTWOOD 1.41 500 PM 7/28 MESONET

HILLSDALE 1.28 515 PM 7/28 MESONET

1 W TENAFLY 1.22 511 PM 7/28 MESONET

TETERBORO 1.19 500 PM 7/28 ASOS

...ESSEX COUNTY...

CALDWELL AIRPORT 1.59 430 PM 7/28 ASOS

1 NW NUTLEY 1.31 530 PM 7/28 MESONET

...PASSAIC COUNTY...

RINGWOOD 1.56 310 PM 7/28 COOP OBSERVER

1 WNW WEST PATERSON 1.23 507 PM 7/28 MESONET

NEW YORK

...NASSAU COUNTY...

HICKSVILLE 2.76 1022 AM 7/28 SKYWARN SPOTTER

OLD BETHPAGE 1.22 1000 AM 7/28 SKYWARN SPOTTER

...ORANGE COUNTY...

CORNWALL ON HUDSON 2.45 330 PM 7/28 SKYWARN SPOTTER

1 WNW GARDNERTOWN 1.62 236 PM 7/28 MESONET

1 W NEW WINDSOR 1.51 558 PM 7/28 MESONET

HAMPTONBURGH 1.16 125 PM 7/28 SKYWARN SPOTTER

1 SW HARRIMAN 1.12 529 PM 7/28 MESONET

...SUFFOLK COUNTY...

HOLTSVILLE 4.70 1030 AM 7/28 PUBLIC

MIDDLE ISLAND 4.52 130 PM 7/28 NWS EMPLOYEE

UPTON 4.00 200 PM 7/28 NWS OFFICE

BAITING HOLLOW 3.23 1000 AM 7/28 SKYWARN SPOTTER

MEDFORD 2.95 1238 PM 7/28 SKYWARN SPOTTER

ISLIP AIRPORT 2.48 200 PM 7/28 ASOS

4 NW WESTHAMPTON 1.85 201 PM 7/28 MESONET

2 N RIDGE 1.77 538 PM 7/28 MESONET

1 ESE DIX HILLS 1.71 1234 PM 7/28 MESONET

SHIRLEY AIRPORT 1.55 550 PM 7/28 ASOS

...WESTCHESTER COUNTY...

1 NNE PEEKSKILL 1.02 523 PM 7/28 MESONET

$$

PICCA

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Guest Pamela

NMM destroys Long Island....4 inches + in spots:

As does the ARW:

Impressive rainfall totals especially over Suffolk County:

PUBLIC INFORMATION STATEMENT

SPOTTER REPORTS

NATIONAL WEATHER SERVICE NEW YORK NY

614 PM EDT SAT JUL 28 2012

THE FOLLOWING ARE

...SUFFOLK COUNTY...

HOLTSVILLE 4.70 1030 AM 7/28 PUBLIC

MIDDLE ISLAND 4.52 130 PM 7/28 NWS EMPLOYEE

UPTON 4.00 200 PM 7/28 NWS OFFICE

BAITING HOLLOW 3.23 1000 AM 7/28 SKYWARN SPOTTER

MEDFORD 2.95 1238 PM 7/28 SKYWARN SPOTTER

ISLIP AIRPORT 2.48 200 PM 7/28 ASOS

4 NW WESTHAMPTON 1.85 201 PM 7/28 MESONET

2 N RIDGE 1.77 538 PM 7/28 MESONET

1 ESE DIX HILLS 1.71 1234 PM 7/28 MESONET

SHIRLEY AIRPORT 1.55 550 PM 7/28 ASOS

$$

PICCA

The crazy numbers put out by last night's NMM and ARW for L.I. verified...continuing to rain heavily here.

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It's crazy to see some of the totals from this am I got nothing while a couple miles to my East got over 2inches western Nassau deff getting screwed today and I doubt those storms in jersy make it here!!!

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If those storms over Jersey and PA can hold together, we might get some decent thunderstorms later tonight. Also, it looks like Eastern suffolk was the bullseye on Long Island this time around. Much less here in Nassau.

there was no thunder here just heavy rain last 15 minutes but as the cell moved just east of the parkway it fizzled out completly

http://www.wunderground.com/radar/radblast.asp?num=6&delay=15&scale=1.00&noclutter=0&ID=DIX&type=N0R&lat=0&lon=0&label=you&showstorms=0&showlabels=1&rainsnow=0

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This morning, the convergent flow over Long Island was slighty weaker over western Nassau hence the cut-off in heavy rain.

It's crazy to see some of the totals from this am I got nothing while a couple miles to my East got over 2inches western Nassau deff getting screwed today and I doubt those storms in jersy make it here!!!

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While they wont be severe, the threat exists through the night for heavy rain. You can tell some new cells are still forming. There is a trough out there and we have a significant shortwave in the atmosphere. With a low as close to us as there is now, you cant write off anything making it here, but will be under severe limits.

don't expect those storms to hold together - seems as the storms moved closer they were encountering a less favorable environment and dissipating

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While they wont be severe, the threat exists through the night for heavy rain. You can tell some new cells are still forming. There is a trough out there and we have a significant shortwave in the atmosphere. With a low as close to us as there is now, you cant write off anything making it here, but will be under severe limits.

some areas the storms hold together but check out the precip in northeast nj in this loop the intensity is decreasing as it moves east

http://www.wunderground.com/radar/radblast.asp?zoommode=zoom&num=6&delay=15&rbscale=0.33043478260869563&scale=1.000&noclutter=0&ID=DIX&type=N0R&lat=0&lon=0&label=you&showstorms=0&map.x=370&map.y=163&centerx=400&centery=240&lightning=0&smooth=0&showlabels=1&rainsnow=0

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While they wont be severe, the threat exists through the night for heavy rain. You can tell some new cells are still forming. There is a trough out there and we have a significant shortwave in the atmosphere. With a low as close to us as there is now, you cant write off anything making it here, but will be under severe limits.

Agreed. There are strong storms to the SE of NJ and S of LI right now, so it's not like the environment over NJ/NYC is unfavorable for convection. The primary threat with these cells has always been flooding rains due to their slow movement and very high moisture content in the atmosphere -- PW's 1.8-1.9. The low level convergence will be present overnight into tomorrow morning due to low pressure. Wouldn't be surprised to see some scattered hvy rains lingering into the first part of tomorrow.

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