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July 2019 General Discussions & Observations Thread


bluewave

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3 hours ago, LibertyBell said:

what is there all time heat index record?  I assume it's from 2011?

115 degrees in 1999 and 2011. JFK made it to 114 this July. Also numerous hourly dewpoint record highs and ties. So a continuation of the unprecedented dewpoint surge since 2016.

https://mesonet.agron.iastate.edu/plotting/auto/?_wait=no&q=153&network=NY_ASOS&zstation=JFK&month=all&var=max_feel&dpi=100&_fmt=png

960E3C2A-44A8-48B6-AFAB-34B021D40B50.thumb.png.e0b23f243b0c38aa3347e8a62b295a6f.png

618E6C42-14B1-4687-B871-99664CE38FA2.thumb.png.b6c564e7232b08ea9477b8ce0d0238cb.png

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5 minutes ago, LongBeachSurfFreak said:

Any reason we do not have a shot a convection today? I would appreciate some insight. Also, the potential for an organized MCs tomorrow or just scattered storms

there is a shot today, which HRRR has mostly been totally clueless about. there is some dry air and a warm layer aloft, but neither of these is sufficient to prevent isolated cells. already seeing some well inland, but the seabreeze fronts will focus a few nearby. only about a 20% chance for anyone in the city to see one, higher chances over eastern LI, CT, Hudson Valley and parts of NJ. 

take the weather you see over western PA and upstate today, and put it squarely over us tomorrow. looks like numerous storms in the afternoon hours as the weakening front/trough approach.

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8 minutes ago, bluewave said:

Heavy thunderstorms  are firing now along the sea breeze front in the North Shore of Suffolk.

 

5DCD0979-431D-427D-95E2-283F811B2B23.thumb.png.fb64cefbdf36c288ae6d7e9a23082b46.png

Surface winds along the north shore have been light off of the sound while the rest of the island has had a southerly breeze.  That and watching the radar over the past couple of hours and the boundary looks more LIS related  rather than the ocean sea breeze which should be able to easily overpower any local sound breeze.  Lots of thunder and a little rain here.  A mile or 2 north (e.g., Short Beach) a lot of days are being ruined.

 

I'm about 2 miles north of the dot representing Smithtown right on the edge of the precip.

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Just now, NorthShoreWx said:

Surface winds along the north shore have been light off of the sound while the rest of the island has had a southerly breeze.  That and watching the radar over the past couple of hours and the boundary looks more LIS related  rather than the ocean sea breeze which should be able to easily overpower any local sound breeze.  Lots of thunder and a little rain here.  A mile or 2 north (e.g., Short Beach) a lot of days are being ruined.

The sea breeze front from the ocean often runs up to the North Shore and meets the convergence zone where the local winds are more NW. Stony Brook gusted to 30 mph with a quick .35. You can see the CU field along the sea breeze front starting out near ISP a few hours back. The convection developed when it reached the local sound breeze. 

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I literally watched those storms blow up from the Northern State and the LIE. Started as a tall but small columnar cumulous cloud not visible on radar and blew up right before my eyes, overtaking 1/3rd of the sky.

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