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John

Lots of stormy Tuesday afternoons in spring/summer 2018, with 5/15, 7/17, and now 8/14 on our list. I think you messed up on two storms that are marked as occurring in 2014 - the storms occurred on 5/11, the day before Mother's day, and Thursday 5/23 both in 2013. And why is the monster storm of Friday April 19 2002 not included - that broke a crazy spring heat wave in my 7th grade year. My Supertrans bus crashed on the way back from Horace Mann school in Riverdale in blinding torrential rain.

Rob

Hi John, thanks for pointing out the error with the years; it's been corrected. And thank you for you recollection of the thunderstorm of 4/19/2002. This may be a case of a localized storm because I have nothing written in my journal about a severe storm that afternoon. Also, looking at the month's weather summary shows that the day's 0.23" of rain fell over the course of five hours (5-10PM), so at least in Central Park there was no deluge.

John R Taylor

What happened to the stormy period of early July 1997, with disappointing thunderstorms on July 3 (which was predicted to be far worse than it was), and then the terrible storms two days apart on Monday the 7th and Wednesday the 9th?

Rob

Hi John, the thunderstorms chosen for the post were based on what I wrote in my journals about them, and during the first week of July 1997 I didn't have much to say about the storms except that the one that struck on 7/7 between 5-530 PM shut down some subway lines in Queens for four hours.

New England Patriot Fan

Hi, Rob. I live in southern Litchfield County, Connecticut (about 80 miles north of New York), a hilly region that generally averages 3-5 degrees colder than New York. Every summer (before the pandemic), I took vacations down in New York, and I quickly became interested in comparing New York’s weather with Northwest Connecticut. The majority of weather events are almost identical (with the exception that my area becomes cool earlier in the fall and has longer winters).
The typical thunderstorm season lasts from mid-May to mid-September. However, I can recall some strong out-of-season thunderstorms during the past two years. The following seven dates contained some serious out-of-season thunderstorms: March 15, 2019; April 15, 2019; April 26, 2019; December 30, 2019; April 9, 2020; April 21, 2020; and October 7, 2020. There must have been tremendous upper level instability during these events, because temperatures during most of the storms mentioned above hovered around 50 degrees, and December 2019’s thunderstorm occurred during an ice storm when the temperature hovered around 32 degrees.
Did New York experience any of the storms mentioned above? And although the events are rare, how often does New York experience thunderstorms outside of the May-September time frame?
From a curious weather fanatic

Rob

All of the dates you listed had some rain reported in Central Park but not all were from thunderstorms. The most severe was likely the thunderstorm this year on 4/21 that resulted in a tornado warning for NYC; however, just 0.18" was measured. 3/19/19 had a thunderstorm between 9-10 PM that produced 0.39" of rain; heavy rain on the morning of 4/15/19 amounted to close to an inch of rain and included a thunderstorm; 4/26/19 saw about an inch of rain fall during lunchtime. but there was no thunderstorm. 12/30/19 had rain for much of the day (0.74") but there were no thunderstorms. The three dates you asked about from this year all had thunderstorms but minimal rainfall (0.12" on 4/9; 0.18" on 4/21; and 0.02" on 10/7).

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