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April 2023


Rtd208
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1 minute ago, Rtd208 said:

Whatver gaps there were in the rain to our south looks to be filling in now. I am wondering if some places will make a 6.00" rainfall total between both storms. 

Intensifying low coming up the coast so precip will fill in quickly.

Subtropical look with bands that'll come from the southeast as low pulls up. 

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Very heavy rain brought flooding to parts of the region today. LaGuardia Airport saw 2.75" of rain through 7 pm following yesterday's 2.49". The last time LaGuardia Airport saw 2.40" or more rain on two consecutive days was August 12-13, 1955. Some additional rain and showers are likely overnight.

A cool pattern remains in place. That pattern will continue through the opening week of May. Afterward, temperatures will trend toward normal and above normal during the second week of May.

April 2023 was among the 10 warmest Aprils on record in much of the region. Preliminary monthly temperatures and rankings include:

Boston: 50.8° (16th warmest)
Bridgeport: 52.0° (5th warmest)
Islip: 53.3° (3rd warmest)
New Haven: 53.6° (1st warmest)
New York City-Central Park: 57.6° (2nd warmest)
New York City-JFK Airport 54.4° (3rd warmest)
New York City-LaGuardia Airport: 57.0° (3rd warmest)
Newark: 58.0° (1st warmest)
Philadelphia: 58.3° (6th warmest)
Poughkeepsie: 53.0° (3rd warmest)
White Plains: 53.5° (3rd warmest)

The ENSO Region 1+2 anomaly was +2.5°C and the Region 3.4 anomaly was +0.3°C for the week centered around April 19. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +2.20°C and the ENSO Region 3.4 anomaly has averaged +0.08°C. Neutral ENSO conditions will likely prevail through at least mid-spring. El Niño conditions will very likely develop during the summer.

The SOI was +12.76 today.

The preliminary Arctic Oscillation (AO) was -1.480 today.

On April 28 the MJO was in Phase 2 at an amplitude of 1.391 (RMM). The April 27-adjusted amplitude was 1.761 (RMM).

 

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Flood warning for the Bronx:

Flood Warning
National Weather Service New York NY
852 PM EDT Sun Apr 30 2023

NYC005-010400-
/O.NEW.KOKX.FA.W.0003.230501T0052Z-230501T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bronx NY-
852 PM EDT Sun Apr 30 2023

...FLOOD WARNING IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

* WHAT...Small stream flooding caused by excessive rainfall is
  expected.

* WHERE...A portion of southeast New York, including the following
  county, Bronx.

* WHEN...Until midnight EDT.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
  and flood-prone locations is imminent or occurring. The Bronx
  River is currently in moderate flood stage due to excess runoff
  from earlier rainfall. Additional rainfall may help extend the
  duration of flooding along the Bronx River overnight.

* ADDITIONAL DETAILS...
  - At 850 PM EDT, Flooding is ongoing or expected to begin
    shortly in the warned area. Between 1 and 2 inches of rain
    have fallen this evening.
  - This includes the following streams and drainages...
    Bronx River.
  - Some locations that will experience flooding include...
    East Tremont.
  - http://www.weather.gov/safety/flood
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42 minutes ago, weathermedic said:

Flood warning for the Bronx:

Flood Warning
National Weather Service New York NY
852 PM EDT Sun Apr 30 2023

NYC005-010400-
/O.NEW.KOKX.FA.W.0003.230501T0052Z-230501T0400Z/
/00000.0.ER.000000T0000Z.000000T0000Z.000000T0000Z.OO/
Bronx NY-
852 PM EDT Sun Apr 30 2023

...FLOOD WARNING IN EFFECT UNTIL MIDNIGHT EDT TONIGHT...

* WHAT...Small stream flooding caused by excessive rainfall is
  expected.

* WHERE...A portion of southeast New York, including the following
  county, Bronx.

* WHEN...Until midnight EDT.

* IMPACTS...Flooding of rivers, creeks, streams, and other low-lying
  and flood-prone locations is imminent or occurring. The Bronx
  River is currently in moderate flood stage due to excess runoff
  from earlier rainfall. Additional rainfall may help extend the
  duration of flooding along the Bronx River overnight.

* ADDITIONAL DETAILS...
  - At 850 PM EDT, Flooding is ongoing or expected to begin
    shortly in the warned area. Between 1 and 2 inches of rain
    have fallen this evening.
  - This includes the following streams and drainages...
    Bronx River.
  - Some locations that will experience flooding include...
    East Tremont.
  - http://www.weather.gov/safety/flood

Yeah I got an alert of a flood warning for the Bronx River. There's new buildings right along the river just south of the Zoo, I suspect that's what the E Tremont reference is for.

The usual suspects already have closures, Bx River, Saw Mill Pkwy..

https://water.weather.gov/ahps2/hydrograph.php?wfo=okx&gage=bbgn6

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