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New York Weather History: August (1869 - 2021)
Today in New York Weather History: September 2

Today in New York Weather History: September 1

 

1910

After today's rainfall of 1.20", only 0.22" would fall for the rest of the month (and none from 9/10 thru the first week of October) - but September's rainfall would be more than what fell for the entirety of August (1.07").  This rain was associated with what was left of the season's first tropical storm.

1927

The year's biggest rainstorm dumped 3.84", mostly between 11 AM-9 PM.  After this storm, the next 30 days would see just 0.43" of rain (followed by an 18-day period between 10/3-20 with nine inches).  Today's rainfall was a record for the date (later broken in 2021).

1975

With winds out of the northeast, it was a cool Labor Day, with a high/low of just 69°/55°, ten degrees below average.  This was the coolest Labor Day in the 1970-20120 period (based on mean temperature).  The one saving grace was that skies today were sunny.

Labor day

1980

After a stifling morning low of 76°, the high topped out at 95°, making this the hottest Labor Day since 1973, when the high reached 96°. 

 

Heatwave3

1983

Although "meteorological summer" (June 1 - Aug. 31) ended yesterday, Mother Nature paid no mind as the mercury soared to a steamy 95° today.

2003

For the second year in a row the temperature never got out of the 60s on Labor Day.  And like the previous year, rain fell, but not nearly as much as in 2002 (0.59", compared to last year's 1.63"). 

2010

September began just as August ended, with a high 96° after a low of 76°.

2012

Today was the Saturday of Labor Day weekend, and the afternoon high of 90° was the first 90-degree reading to occur during the holiday weekend since 1998.  This was also the nineteenth, and last, 90-degree reading of the year (the average number is eighteen). 

2014

It was a very sultry Labor Day, and the high/low of 88°/75° (nine degrees above average) made it the warmest holiday since 1983 (based on mean temperature), when it was 91°/73°. 

2017

This morning's low of 55° was the first reading below 60° since 6/9, and was the chilliest reading on this date since 1975.  And with a high of 71°, the day's mean temperature of 63° was the coolest on 9/1 since 2002, when the high/low was 65°/59° (a mean of 62°).

 

Chilly

2021

Although Hurricane Ida, which made landfall in Louisiana four days ago as category 4 storm, had weakened to a tropical depression by the time it made its way to the Mid-Atlantic, the energy that remained packed quite a punch as New York was flooded by extreme rainfall and lashed by tropical storm-force winds (causing greater disruptions than tropical storm Henri did less than two weeks ago).  After a first round of moisture brought light showers shortly after sunrise, there was a lull until 5 PM when heavy rain moved in, becoming torrential a few hours later.  By midnight, 7.13" had been measured in Central Park – comparable to seven weeks worth of rain, and two-and-a-half inches more than a typical September sees in its entirety. 

At its most intense, between 9-10 PM, more than three inches poured down.  Because of this excessive rate of rainfall, the National Weather Service, for the first time, issued a Flash Flood Emergency for NYC, and subway service was suspended throughout the City.  Shockingly, the City suffered 13 flood-related fatalities.  Unlike Henri, which wasn’t a wind producer, Ida’s visit was accompanied by winds that gusted between 35-50 mph.  

Between Aug. 21 (when Henri moved in) and today, 15.99" of rain was measured in Central Park.  And between June 30 and today, 29.19" fell - which is 20 inches more than the amount that typically falls during this nine-week period.

 

Matt brickman weatherman
 

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Comments

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William

no month has ever began with a rain storm that was as big as how September 2021 began. 7.13" of rain fell on this date in 2021, making this the fifth wettest day on record (and the wettest day since April 15, 2007, when 7.57” of rain fell). before this, the wettest day at the beginning of a month was on October first of 1913, when 4.98" of rain fell.

Henry

The rather turbulent summer of 2021 culminated with two hurricanes smashing New York. August 21, 2021, (Henri) is now the sixteenth rainiest day on record. September 1, 2021, (Ida) is the fifth rainiest day on record. September 2021’s first day had more rain than the first day of any other month (the previous credit went to October 1913). This brings to mind how April 30, 2014, had more rain than the last day of any other month. In my fifteen years here, I thought Ida was worse than Hurricane Irene in 2011 and the remnants of the tornadic storm in late April 2014.

This year now has two months in which a major weather event occurred on the first day: February’s big snowstorm and September’s heavy rain. I find this interesting because the first day of most months is usually uneventful.

William

2021 - even though just 0.50” of additional rain fell in the two weeks after today, the 7.63” of rain that fell made this the third wettest first half of September ever, behind 1944 (9.40”) and 1933 (9.59”). interestingly, just three years earlier, November 2018 had 7.62” of rain for the month’s entirety.

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