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December warm NOT White


PB GFI

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Really impressive to see 17 out of 18 days in December in NYC with a high above 50 degrees.

Looks like only Saturday and Sunday will stay below 50 before more 50's and 60's next week.

NYC is at 12.4 and the warmth over the remainder of the month should keep the monthly

Departure at +10 or greater. it's possible some areas reach 70 degrees if we get enough

breaks of sun on the warmest day next week.

Today starts with a +15 maximum departure with the 57 midnight high.

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Today starts with a +15 maximum departure with the 57 midnight high.

 

Very stable Western US Nino trough and Northeast ridge with the record warmth since last May.

I guess this is what happens when the new era of stuck 500 patterns meets such a

strong El Nino event.

 

 

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Overnight Euro suggests record-smashing temps on Christmas Eve. 70+ F in New Jersey and the NYC Metro. https://t.co/lZEGxIm9Dy

Going to be a royal mess for those getting a lake effect storm, with it melting faster than it fell.

 

The late December pattern really changed here after the Boxing Day Blizzard back in 2010. The 20th-31st has featured

above normal to record high temperatures in 2011, 2012, 2013, 2014, and now 2015. 

 

NYC 12/20-12/31 highs since 2011:

 

12/21/11...62

12/21/12...56

12/22/13...71

12/25/14...62

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The late December pattern really changed here after the Boxing Day Blizzard back in 2010. The 20th-31st has featured

above normal to record high temperatures in 2011, 2012, 2013, 2014, and now 2015. 

 

NYC 12/20-12/31 highs since 2011:

 

12/21/11...62

12/21/12...56

12/22/13...71

12/25/14...62

There was also a period of warmth post Boxing day-I remember the snow mostly melting away after that and a real warm night on the 1st of January-driving down 95 with water everywhere from melting snow.

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There was also a period of warmth post Boxing day-I remember the snow mostly melting away after that and a real warm night on the 1st of January-driving down 95 with water everywhere from melting snow.

 

It may be tough to replicate the magnitude of two late December blizzards in a row during 2009 and 2010.

But things have been much warmer since then. The 2000's patterns continue to swing from one extreme

to another.

 

http://www.erh.noaa.gov/okx/StormEvents/storm12192009.html

 

http://www.erh.noaa.gov/okx/StormEvents/storm12262010.html

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It may be tough to replicate the magnitude of two late December blizzards in a row during 2009 and 2010.

But things have been much warmer since then. The 2000's patterns continue to swing from one extreme

to another.

 

http://www.erh.noaa.gov/okx/StormEvents/storm12192009.html

 

http://www.erh.noaa.gov/okx/StormEvents/storm12262010.html

Great storms-although I got screwed-western edge of 09 and eastern edge of 10!  LOL. 

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GFSx is +13 for next 8 days (including today).

(12.4x17) + (13x8) = 315deg. surplus with a target of 211.    So last 6 days of month would have to be 104/6= -17degs. to prevent a new monthly record.   For that matter, the remaining 14 days of the month could come in at exactly normal now and we would still set the record!

Crazy statistical stuff.

http://www.nws.noaa.gov/cgi-bin/mos/getmex.pl?sta=KACY&sta=KEWR&sta=KNYC&sta=KJFK&sta=KLGA

 

In addition, the 30 day analog does not show a good chance of a below normal day till Jan. 15, or some 45 consecutive days if we make through Dec. w/o any.   A major change is indicated by this because it does look like it will NOT be just a two day accidental cold.

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GFSx is +13 for next 8 days (including today).

(12.4x17) + (13x8) = 315deg. surplus with a target of 211. So last 6 days of month would have to be 104/6= -17degs. to prevent a new monthly record. For that matter, the remaining 14 days of the month could come in at exactly normal now and we would still set the record!

Crazy statistical stuff.

http://www.nws.noaa.gov/cgi-bin/mos/getmex.pl?sta=KACY&sta=KEWR&sta=KNYC&sta=KJFK&sta=KLGA

In addition, the 30 day analog does not show a good chance of a below normal day till Jan. 15, or some 45 consecutive days if we make through Dec. w/o any. A major change is indicated by this because it does look like it will be just a two day accidental cold.

It calculates today's high as 50, but we had a midnight high, so it's higher.

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Euro going with 70 degrees and +14C 850's on the 24th.

Nothin like short on Charismats Eve! has happened before though. Though Id love to see the Xmas Noreaster redux. Remember it so well! Cold heavy rain and then the stacked low in the Atlantic changed it all to heavy pounding snow with wind for 6 -7 hours, end result 7 inches near JFK and much more up north.

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Nothin like short on Charismats Eve! has happened before though. Though Id love to see the Xmas Noreaster redux. Remember it so well! Cold heavy rain and then the stacked low in the Atlantic changed it all to heavy pounding snow with wind for 6 -7 hours, end result 7 inches near JFK and much more up north.

 

Any highs of 65 or greater in NYC puts it in the top 5 warmest 12/15-12/31 record highs.

 

NYC top 5 record highs 12/15-12/31:

 

#1...71....2013

#2...70....1984

#3...67....2008

#4...66....1990

#5...65.....2013...2008...1984...1982

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looks similar to the busted week 4 forecast from november valid this week

 

500za_week4_bg_na1.png

 

 

Not sure I agree. The latter looks like a PAC flow dominated warm Canada, where the former looks like a PNA ridge and an STJ undercutting that. I'd say the new week 4 pattern is much better. It's still not great considering the hostile Atlantic, but it's something we can for sure work with in mid-January. 

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Not sure I agree. The latter looks like a PAC flow dominated warm Canada, where the former looks like a PNA ridge and an STJ undercutting that. I'd say the new week 4 pattern is much better. It's still not great considering the hostile Atlantic, but it's something we can for sure work with in mid-January. 

it's roughly the same pattern shifted west a bit. my main point is that it busted...

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This is going onto the list of extreme 500 mb patterns during 2000's that got stuck place

for an extended period of time. The same 500 mb pattern allowed us to tie the warmest fall

and easily surpass 2001 for the warmest December on record.

 

Fall 2015

 

 

 

December 2015 so far

 

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The GFSx remains double-digits above normal for the next 8 days (including today) at +12degs.

(12.3x18) + (8x12) = 317    Target for a new monthly record is 211.   Using GFSx for the next 8 days and Accuweather for the last 5 days of the month, I get a whopping surplus of 317 + 45 = 362/31days  =  about +11.7degs for the month!!!!!!

http://www.nws.noaa.gov/cgi-bin/mos/getmex.pl?sta=KACY&sta=KEWR&sta=KNYC&sta=KJFK&sta=KLGA

 

http://www.accuweather.com/en/us/new-york-ny/10007/december-weather/349727

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