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Spotty 3+" rainfall NJ/LI Midnight Thu AM-9AM Fri 9/10-11/20


wdrag
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13 hours ago, bluewave said:

The 4 to 5.4 range was pretty common from SE Nassau to SW Suffolk.


NEW YORK

...NASSAU COUNTY...
   1 SSW MASSAPEQUA      5.41   855 AM  9/10  COCORAHS                
   MERRICK               4.38   820 AM  9/10  CWOP     

Wantagh mesonet..................................4.66

 


..SUFFOLK COUNTY...
   WEST GILGO BEACH      4.13   816 AM  9/10  CWOP                    
   ENE COPIAGUE          4.05   800 AM  9/10  COCORAHS                
   WSW AMITYVILLE        4.04   800 AM  9/10  COCORAHS    

what were the totals in SW Nassau going back to JFK, Chris?

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8 minutes ago, bluewave said:

the old record wasn't that long ago- 2018!

 

I saw a contour map that brought the 2" line through about Lynbrook/Oceanside/East Rockaway- would you say that's accurate?

The heaviest seemed to be around Pt Look Out and the western part of Jones Beach.

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4 minutes ago, LibertyBell said:

the old record wasn't that long ago- 2018!

 

I saw a contour map that brought the 2" line through about Lynbrook/Oceanside/East Rockaway- would you say that's accurate?

The heaviest seemed to be around Pt Look Out and the western part of Jones Beach.

Pt Lookout wunderground station had 6.47.The 2” line was correct.

https://www.wunderground.com/dashboard/pws/KNYPOINT4/graph/2020-09-10/2020-09-10/daily

EAST ROCKAWAY         2.34   755 PM  9/10  CWOP                    
   VALLEY STREAM         2.05   746 PM  9/10  CWOP                    
   ROCKVILLE CENTRE      1.76   804 PM  9/10  AWS            
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30 minutes ago, bluewave said:

Pt Lookout wunderground station had 6.47.The 2” line was correct.

https://www.wunderground.com/dashboard/pws/KNYPOINT4/graph/2020-09-10/2020-09-10/daily


EAST ROCKAWAY         2.34   755 PM  9/10  CWOP                    
   VALLEY STREAM         2.05   746 PM  9/10  CWOP                    
   ROCKVILLE CENTRE      1.76   804 PM  9/10  AWS            

Nothing much added after 8 PM I take it?

 

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WU reports after midnight only are attached... (early this Friday morning). Decent leftover's near Brookhaven.  Usually I don't see these appended to NWS posts, but the data is valuable=useful,  if checked against surroundings and radar. 

Part two (all of last night) ended up less than anticipated in the page1 posts on this topic, due to the main band being south of LI instead of over LI.  Still,  the two day amount graphic posting late this morning will be fairly impressive in NJ/LI - well above normal for the entire week two period. 

I don't plan on any further topic posts for the next 5 days... awaiting the eventual tropical cyclone northward feeds.

NCEP model guidance transmission appears to still have the past two days of timely delivery issues.

Thank you for all of your posts-comments/impressions.  Will add more around 11A.  755A/11

(818A update--just cleaned out all my attachments up through Aug 29, 2020 to make room for the future)

Screen Shot 2020-09-11 at 7.44.57 AM.png

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Ap possibly incomplete preliminary wrap-up of two day totals... (MARFC radar-sensor for NJ is complete), but CoCoRaHs may update further later. 

Added AHPS SR two day radarCT/LI age 333PM.  Have not taken the time to add up some of the wunderground two day obs for southern LI. 

Screen Shot 2020-09-11 at 9.26.40 AM.png

Screen_Shot_2020-09-11_at_9_42.05_AM.png

Screen_Shot_2020-09-11_at_9_43.29_AM.png

Screen_Shot_2020-09-11_at_3_31.25_PM.png

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6 hours ago, gravitylover said:

That's off a little bit here. It has me at .75>1.5" and my total was .64. 

Problem solved...  color coding can be the confusion in high gradient pockets... it will not jump from 0.5 to 2.5" without color coded intervening ranges. It's agreed that this image is about as good as it can get. Accuracy will improve in the future years.

 

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