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September 2018 Discussions & Observations Thread


Rtd208

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Warned.

Flash Flood Warning

Flash Flood Warning
NYC103-260000-
/O.NEW.KOKX.FF.W.0046.180925T2235Z-180926T0000Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/

BULLETIN - EAS ACTIVATION REQUESTED
Flash Flood Warning
National Weather Service New York NY
635 PM EDT TUE SEP 25 2018

The National Weather Service in Upton NY has issued a

* Flash Flood Warning for...
  Western Suffolk County in southeastern New York...

* Until 800 PM EDT.

* At 635 PM EDT, Doppler radar indicated heavy rain across the warned
  area. Flash flooding is expected to begin shortly.

* Some locations that will experience flooding include...
  Islip, Brentwood, Commack, Huntington Station, Centereach, Deer
  Park, Lindenhurst, Hauppauge, Ronkonkoma, Huntington, Stony Brook,
  Babylon, Port Jefferson, Northport and Holbrook.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

Turn around, don`t drown when encountering flooded roads. Most flood
deaths occur in vehicles.

Excessive runoff from heavy rainfall will cause flooding of small
creeks and streams, urban areas, highways, streets and underpasses as
well as other drainage areas and low lying spots.

Please report flooding to your local law enforcement agency when you
can do so safely.

A Flash Flood Warning means that flooding is imminent or occurring.
If you are in the warned area move to higher ground immediately.
Residents living along streams and creeks should take immediate
precautions to protect life and property.

&&

LAT...LON 4094 7347 4091 7341 4095 7338 4091 7322
      4094 7316 4097 7316 4097 7304 4071 7307
      4069 7315 4070 7323 4066 7336 4065 7337
      4065 7321 4067 7321 4067 7308 4066 7308
      4060 7342

$$

MALOIT
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2.06” and counting, rates over 3” per hour.

This is the most rain I’ve received in a single day since the 13 inch event in August 2014, which I didn’t even have a rain gauge for. This is also my first time passing the 2 inch mark with a rain gauge of any kind, it only took 4 years, how pathetic.

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7 minutes ago, Cfa said:

2.06” and counting, rates over 3” per hour.

This is the most rain I’ve received in a single day since the 13 inch event in August 2014, which I didn’t even have a rain gauge for. This is also my first time passing the 2 inch mark with a rain gauge of any kind, it only took 4 years, how pathetic.

3.14" and still pouring, crazy flooding. 

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34 minutes ago, gravitylover said:

I guess they should have put the parkways somewhere other than over and next to rivers. 

 

I'm at ~1.8" so far for the day.

That’s where the cheap or undelveloped land was located for reason. 

Things look to be calming down now in the city. SWCT must have some serious flooding now with a large area 5”+

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2 minutes ago, LongBeachSurfFreak said:

That’s where the cheap or undelveloped land was located for reason. 

Things look to be calming down now in the city. SWCT must have some serious flooding now with a large area 5”+

Western Suffolk is in bad shape. 3-4” of rain in 2 hours. The road in front of my office is 2-3 feet of water with cars getting stuck. 

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Through 8 pm, New York City's total precipitation for 2018 was 46.83". That ranks 2018 as New York City's 52nd wettest year on record, just below 1948 when 46.87" fell.

In terms of implied probabilities:

50" or more:
Historic (1969-2017) data: 98%
1971-2017 data: 98%

60" or more:
Historic (1969-2017) data: 34%
1971-2017 data: 51%

Since 1869, New York City has had 32 years when 50" or more precipitation fell. 63% of those cases occurred after 1970.

Since 1869, New York City has had 7 years when 60" or more precipitation fell. All of those cases occurred after 1970.

Finally, the latest PNS for the rainfall totals follows:

000
NOUS41 KOKX 252341
PNSOKX
CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-261124-

Public Information Statement
Spotter Reports
National Weather Service New York NY
740 PM EDT Tue Sep 25 2018

The following are unofficial observations taken during the past 12
hours for 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 also is 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...
   Wilton                5.25   630 PM  9/25  Public
   New Canaan            3.49   500 PM  9/25  CoCoRaHS
   Bethel                2.00   300 PM  9/25  CoCoRaHS
   Darien                1.54   355 PM  9/25  Trained Spotter
   1 S Monroe            0.68   945 AM  9/25  CoCoRaHS

...New Haven County...
   East Wallingford      5.36   630 PM  9/25  Social Media
   New Haven             2.50   645 PM  9/25  CoCoRaHS

NEW JERSEY

...Bergen County...
   Tenafly               3.56   230 PM  9/25  CoCoRaHS
   North Arlington       2.11   115 PM  9/25  Mesonet
   WNW Palisades Park    0.57   900 AM  9/25  CoCoRaHS
   North Arlington       0.55   900 AM  9/25  CoCoRaHS
   Wood-ridge            0.51   823 AM  9/25  CWOP

...Essex County...
   Caldwell              3.24   545 PM  9/25  Co-Op Observer
   1 NW Nutley           0.52   821 AM  9/25  CWOP

...Hudson County...
   Bayonne               4.63   115 PM  9/25  Mesonet
   North Bergen          4.07   115 PM  9/25  Mesonet
   Secaucus              4.04   115 PM  9/25  Mesonet
   Harrison              1.81   115 PM  9/25  Co-Op Observer

...Passaic County...
   2 ENE Ringwood        3.04   545 PM  9/25  Co-Op Observer
   1 W Totowa            2.72   545 PM  9/25  Co-Op Observer
   1 E Ringwood          0.56   810 AM  9/25  RAWS

NEW YORK

...Kings County...
   2 ENE Coney Island    0.50   813 AM  9/25  CWOP

...Nassau County...
   Merrick               0.52   545 PM  9/25  Trained Spotter
   Wantagh               0.51   800 AM  9/25  CoCoRaHS
   1 SSE North Wantagh   0.50  1030 AM  9/25  CoCoRaHS

...Orange County...
   Monroe                1.22  1100 AM  9/25  Trained Spotter
   3 WSW Pine Bush       0.95   900 AM  9/25  CoCoRaHS
   Montgomery Airport    0.65   754 AM  9/25  ASOS
   West Point            0.59   755 AM  9/25  RAWS
   2 SW Greenwood Lake   0.59   800 AM  9/25  CoCoRaHS
   1 SSW Newburgh        0.58   823 AM  9/25  CWOP
   New Windsor           0.56   821 AM  9/25  CWOP

...Queens County...
   Bellerose             0.69   821 AM  9/25  CWOP

...Richmond County...
   Richmondtown          1.54   500 PM  9/25  CoCoRaHS

...Rockland County...
   Montebello            0.51   821 AM  9/25  CWOP

...Suffolk County...
   Dowling Sea Com       2.22   200 PM  9/25  Co-Op Observer
   West Islip            1.50   640 PM  9/25  Trained Spotter
   Copiague              0.53  1005 AM  9/25  CoCoRaHS

...Westchester County...
   Armonk                2.70   445 PM  9/25  Trained Spotter

&&
 

 

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45 minutes ago, LongBeachSurfFreak said:

That’s where the cheap or undelveloped land was located for reason. 

Things look to be calming down now in the city. SWCT must have some serious flooding now with a large area 5”+

OKX radar estimates 6-8 inches here...it was complete mayhem for a few hours earlier...everything flooded, basements, roads everything-never seen anything like it.

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37 minutes ago, donsutherland1 said:

Through 8 pm, New York City's total precipitation for 2018 was 46.83". That ranks 2018 as New York City's 52nd wettest year on record, just below 1948 when 46.87" fell.

In terms of implied probabilities:

50" or more:
Historic (1969-2017) data: 98%
1971-2017 data: 98%

60" or more:
Historic (1969-2017) data: 34%
1971-2017 data: 51%

Since 1869, New York City has had 32 years when 50" or more precipitation fell. 63% of those cases occurred after 1970.

Since 1869, New York City has had 7 years when 60" or more precipitation fell. All of those cases occurred after 1970.

Finally, the latest PNS for the rainfall totals follows:

000
NOUS41 KOKX 252341
PNSOKX
CTZ005>012-NJZ002-004-006-103>108-NYZ067>075-078>081-176>179-261124-

Public Information Statement
Spotter Reports
National Weather Service New York NY
740 PM EDT Tue Sep 25 2018

The following are unofficial observations taken during the past 12
hours for 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 also is 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...
   Wilton                5.25   630 PM  9/25  Public
   New Canaan            3.49   500 PM  9/25  CoCoRaHS
   Bethel                2.00   300 PM  9/25  CoCoRaHS
   Darien                1.54   355 PM  9/25  Trained Spotter
   1 S Monroe            0.68   945 AM  9/25  CoCoRaHS

...New Haven County...
   East Wallingford      5.36   630 PM  9/25  Social Media
   New Haven             2.50   645 PM  9/25  CoCoRaHS

NEW JERSEY

...Bergen County...
   Tenafly               3.56   230 PM  9/25  CoCoRaHS
   North Arlington       2.11   115 PM  9/25  Mesonet
   WNW Palisades Park    0.57   900 AM  9/25  CoCoRaHS
   North Arlington       0.55   900 AM  9/25  CoCoRaHS
   Wood-ridge            0.51   823 AM  9/25  CWOP

...Essex County...
   Caldwell              3.24   545 PM  9/25  Co-Op Observer
   1 NW Nutley           0.52   821 AM  9/25  CWOP

...Hudson County...
   Bayonne               4.63   115 PM  9/25  Mesonet
   North Bergen          4.07   115 PM  9/25  Mesonet
   Secaucus              4.04   115 PM  9/25  Mesonet
   Harrison              1.81   115 PM  9/25  Co-Op Observer

...Passaic County...
   2 ENE Ringwood        3.04   545 PM  9/25  Co-Op Observer
   1 W Totowa            2.72   545 PM  9/25  Co-Op Observer
   1 E Ringwood          0.56   810 AM  9/25  RAWS

NEW YORK

...Kings County...
   2 ENE Coney Island    0.50   813 AM  9/25  CWOP

...Nassau County...
   Merrick               0.52   545 PM  9/25  Trained Spotter
   Wantagh               0.51   800 AM  9/25  CoCoRaHS
   1 SSE North Wantagh   0.50  1030 AM  9/25  CoCoRaHS

...Orange County...
   Monroe                1.22  1100 AM  9/25  Trained Spotter
   3 WSW Pine Bush       0.95   900 AM  9/25  CoCoRaHS
   Montgomery Airport    0.65   754 AM  9/25  ASOS
   West Point            0.59   755 AM  9/25  RAWS
   2 SW Greenwood Lake   0.59   800 AM  9/25  CoCoRaHS
   1 SSW Newburgh        0.58   823 AM  9/25  CWOP
   New Windsor           0.56   821 AM  9/25  CWOP

...Queens County...
   Bellerose             0.69   821 AM  9/25  CWOP

...Richmond County...
   Richmondtown          1.54   500 PM  9/25  CoCoRaHS

...Rockland County...
   Montebello            0.51   821 AM  9/25  CWOP

...Suffolk County...
   Dowling Sea Com       2.22   200 PM  9/25  Co-Op Observer
   West Islip            1.50   640 PM  9/25  Trained Spotter
   Copiague              0.53  1005 AM  9/25  CoCoRaHS

...Westchester County...
   Armonk                2.70   445 PM  9/25  Trained Spotter

&&
 

 

Wantagh meso up to 2.16” since this was reported. 

Great info, baring a very dry end to the year it looks like we crack the top 10.

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