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September 2014


Rtd208

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There was almost no way we were getting a -10 no matter what the wind direction. If anything a stiff east wind along with rain would have been one of the only ways to pull off a negative departure like that.

 

You need the northerly cold air drain down the Hudson Valley like we got last September 17th when LGA 

had a -12. The winds shifted east during that day but the cold air in the morning was too much to recover from.

17  65  49  57 -12
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You need the northerly cold air drain down the Hudson Valley like we got last September 17th when LGA

got a -12. The winds shifted east during that day but the cold air in the morning was too much to recover from.

17  65  49  57 -12

My fault, I thought you were referring to the summer months. I can see strong CAA and cold air drainage working in September because we actually have some decent cold fronts (usually) traversing our region during this period.

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My fault, I thought you were referring to the summer months. I can see strong CAA and cold air drainage working in September because we actually have some decent cold fronts (usually) traversing our region during this period.

 

No problem. It seems easier to get -10's on easterly flow during the summer since

it can lead to large max departures.

 NYC 7-25-13  68  64  66 -11 
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There have been very few colder than normal autumns the last 4 decades or so; I'd venture that there have probably been more colder than normal winters than falls over that stretch in the NY area. 

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There have been very few colder than normal autumns the last 4 decades or so; I'd venture that there have probably been more colder than normal winters than falls over that stretch in the NY area. 

 

Generally the first cold shot of air out develops in western Canada and a trough develops over the western half of the US...with at least a couple of big snowstorms for the Rockies...and, depending on temperatures...extending east into the High Plains...sometimes as far east as Nebraska.  Not very often will the Lower 48 see the first major snowstorm of the season in the Eastern part of the nation. 

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There have been very few colder than normal autumns the last 4 decades or so; I'd venture that there have probably been more colder than normal winters than falls over that stretch in the NY area. 

 

Colder than normal, maybe. Snowier than normal? On the scale of a 40" of more NYC winter? Nope! Of course, I'll let Uncle W be the judge, jury and executioner in that matter, but I don't believe a cold autumn has ever led to a snowy winter.

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Colder than normal, maybe. Snowier than normal? On the scale of a 40" of more NYC winter? Nope! Of course, I'll let Uncle W be the judge, jury and executioner in that matter, but I don't believe a cold autumn has ever led to a snowy winter.

Wasn't last fall colder than normal? I know October was a good 3 degrees above normal but I believe November was around 2.5 degrees below normal. Maybe it finished just around average..

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September's real temperature departure for KNYC...

1981-2010 Septembers...

1981...67.6

1982...68.3

1983...71.8

1984...65.7

1985...70.5

1986...67.9

1987...67.9

1988...67.4

1989...68.1

1990...67.5

1991...67.5

1992...67.2

1993...67.3

1994...67.6

1995...68.3

1996...68.0

1997...67.0

1998...70.2

1999...69.1

2000...66.0

2001...67.7

2002...70.2

2003...67.9

2004...69.3

2005...73.3

2006...66.6

2007...70.3

2008...68.8

2009...66.3

2010...71.1

total 20526:30= 68.42

as of yesterday 9/29 NYC was averaging 69.8 for September...It could end up 69.7 or 69.8 depending how cool it gets by midnight (1am)dst...

The real departure is +1.4 or 1.3...

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Been raining off and on for most of the day in Mineola and temp is a chilly 63. Looks like it just stopped again and radar doesn't show anything nearby maybe we'll get some breaks of sun to warm us up a little. .

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Guest Pamela

What a difference 25 miles make.

 

Like sooo true...amazing how much snowier Stamford, Ct is when compared to Bayside.

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