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March 2024


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Just passed 8.00" for month, good for 6th wettest, about 0.75" behind 1953 and 1876, first to third are 10 to 11 inches. 

The 1876 record one-day event was a strong low from central U.S. and Ohio valley which did a slow coastal transfer (4.25" included 0.5" snow at NYC). It was also on a Saturday (25th). Same storm produced a very heavy snowfall at Toronto (around 17"). 

Can't help but notice that top daily rainfalls in past cases are well correlated with hot summers or at least one notable hot spell. 

 

 

 

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51 minutes ago, jm1220 said:

Even better, tonight it will probably get below 30 here. Wonder how much of this will ice up. Still raining moderately. Closest gauge to here says 3.48". Seeing 4.02" in Huntington Village just north of here and some over 4" in N Nassau.

winds and dry air will take care of most roads

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9 minutes ago, Roger Smith said:

Just passed 8.00" for month, good for 6th wettest, about 0.75" behind 1953 and 1876, first to third are 10 to 11 inches. 

The 1876 record one-day event was a strong low from central U.S. and Ohio valley which did a slow coastal transfer (4.25" included 0.5" snow at NYC). It was also on a Saturday (25th). Same storm produced a very heavy snowfall at Toronto (around 17"). 

Can't help but notice that top daily rainfalls in past cases are well correlated with hot summers or at least one notable hot spell. 

 

 

 

yep, March 2010 and the great summer of 2010....

March 1993 and the great summer of 1993.....

 

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Just now, jm1220 said:

Adding up the hourly totals at JFK I got 3.12", LGA 3.44", Central Park 3.63 and EWR 2.86" (missing data?)

Right, I expected them all to be over 3" by the end of the storm.

Do you think this is going to be our last freezing or below temperatures for the airports and the park tonight or tomorrow night?

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7 minutes ago, jm1220 said:

Looks like 3.8" will do it here. Kudos to the HRRR for nailing the heavy rain just north of the warm front and developing band with the cold front. Still have 7 days left with many/most of us over 10" now for the month.

The next two nights may be our last freezing or below temperatures until next fall looking at the forecasts.

 

1 hour ago, jm1220 said:

Even better, tonight it will probably get below 30 here. Wonder how much of this will ice up. Still raining moderately. Closest gauge to here says 3.48". Seeing 4.02" in Huntington Village just north of here and some over 4" in N Nassau.

 

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Much of the northern Mid-Atlantic region and parts of southern New England saw daily record rainfall today.  Daily records through 6 pm included:

Allentown: 1.73" (old record: 1.12", 2005)
Atlantic City: 2.69" (old record: 1.59", 2005)
Binghamton: 1.03" (old record: 0.74", 1968)
Bridgeport: 3.28" (old record: 1.28", 2020)
Hartford: 1.96" (old record: 1.14", 2020)
Islip: 2.22" (old record: 1.32", 2020)
New York City-Central Park: 3.66" (old record: 1.60", 1929) ***3rd highest daily rainfall in March***
New York City-JFK Airport: 3.13" (old record: 1.28", 2020)
New York City-LaGuardia Airport: 3.47" (old record: 1.44", 2020)
Newark: 2.97" (old record: 1.52", 1961)
Philadelphia: 3.09" (old record: 1.36", 2005)
Poughkeepsie: 2.05" (old record: 0.83", 1944)
Trenton: 2.91" (old record: 1.62", 1961)
White Plains: 3.00" (old record: 1.20", 2001)
Wilmington, DE: 2.81" (old record: 2.05", 1903)

Philadelphia's daily rainfall also set a new record for highest daily rainfall for any day in March. The previous record of 2.79" was set on March 15, 1912.

As a result of today's rainfall, March 2024 now ranks among the 10 wettest Marches on record in New York City. In addition, 66% of the top 10 wettest months have occurred since 2000, even as the 2000s account for just 16% of months in New York City's climate record. Top 10 wettest and warmest months are both disproportionately represented by the 2000s.

In the wake of today's storm, tomorrow will be blustery and unseasonably cold. Moderation will follow. The closing days of March could turn warmer. However, the kind of warmth that occurred earlier in March is unlikely.

It is very likely that New York City's Central Park will finish the 2023-2024 snow season with less than 10" of seasonal snowfall for a record second consecutive season. Records go back to 1869.

The ENSO Region 1+2 anomaly was +0.4°C and the Region 3.4 anomaly was +1.1°C for the week centered around March 13. For the past six weeks, the ENSO Region 1+2 anomaly has averaged +0.88°C and the ENSO Region 3.4 anomaly has averaged +1.42°C. The ongoing basinwide El Niño event is now fading. Neutral conditions could develop during the spring.

The SOI was +3.68 today.

The preliminary Arctic Oscillation (AO) was +0.097 today.

Based on sensitivity analysis applied to the latest guidance, there is an implied near 100% probability that New York City will have a warmer than normal March (1991-2020 normal). March will likely finish with a mean temperature near 48.2° (5.5° above normal).

 

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29 minutes ago, LibertyBell said:

Right, I expected them all to be over 3" by the end of the storm.

Do you think this is going to be our last freezing or below temperatures for the airports and the park tonight or tomorrow night?

Possibly not if GFS 12z was on track, first week of April looks rather cool with a rain-snow threat near end of run (on April 8). Would estimate a -3 anomaly for April 1-8 if that guidance verified, but of course it's the GFS past ten days so ...

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