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December warm NOT White


PB GFI

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last year was a very cold winter on average with a consecutive 30 days averaging 23.9...This year might not get 10 degrees from that figure...1997-98 only averaged 37.3...highest on record...2011-12 averaged 37.0...Other years that were near ten degrees warmer or colder than the previous winter on average for the coldest 30 day period...

1932-33..........33.9
1933-34..........19.6

1935-36..........20.4
1936-37..........34.9

1947-48..........21.5
1948-49..........36.3

 

1979-80..........30.9

1980-81..........22.2

1989-90..........25.3...
1990-91..........34.5

1993-94..........23.5
1994-95..........31.5


2001-02..........35.4
2002-03..........25.9

2010-11..........28.1
2011-12..........37.0

 

2014-15..........23.9.

2015-16..........

 

 

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Not much of a backdoor front here, although the NWS was expecting one as they lowered the forecast high to 59F last night. However, it's actually 64F at the White Plains Airport ASOS and 62F at the nearest Wunderground station in Dobbs Ferry. Still rising in warm sunshine, too.

I can remember 60s in December before like 12/25/14 and 12/21/13, but it's usually one or two warm days ahead of a cutter and strong cold front. This time, it's going on a week of 60+ weather, especially if you consider compressional warming and 850mb temperature spike ahead of the FROPA Monday and then downsloping Tuesday on west winds with cold air lagging the front. Then, we have another cutter with potential for 60s Wednesday and Thursday.

To have such a long stretch of +15-20F departures and 60-degree weather in December is unprecedented. One day of this weather ahead of a cutter is normal, ten days is something exceptional.

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Not much of a backdoor front here, although the NWS was expecting one as they lowered the forecast high to 59F last night. However, it's actually 64F at the White Plains Airport ASOS and 62F at the nearest Wunderground station in Dobbs Ferry. Still rising in warm sunshine, too.

I can remember 60s in December before like 12/25/14 and 12/21/13, but it's usually one or two warm days ahead of a cutter and strong cold front. This time, it's going on a week of 60+ weather, especially if you consider compressional warming and 850mb temperature spike ahead of the FROPA Monday and then downsloping Tuesday on west winds with cold air lagging the front. Then, we have another cutter with potential for 60s Wednesday and Thursday.

To have such a long stretch of +15-20F departures and 60-degree weather in December is unprecedented. One day of this weather ahead of a cutter is normal, ten days is something exceptional.

Even down here it's challenging records (it's been in the upper 70s to low 80s the last few days). It's finally cooling off with the front that came through with thunderstorms overnight, but it's still supposed to be above normal early this week. It's a strong Nino though, so sooner or later it's bound to turn around and become a deluge down here. 

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