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December 2019


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1 hour ago, uncle W said:

growing up in the 1960's spoiled me...Decembers were very cold and there was snow for Christmas...1960 had four days in single digits...1968-69 had it's coldest temp in early Dec...1963-64 had its coldest week of the season the third week of Dec...they also had a few torch days and mild Christmas in 1964 and 1965...It snowed 3" on 12/20/64 but was gone by Christmas eve...It was 69 degrees Christmas day 1964...that was a shock to the system...today its becoming normal...

Tough to beat December 2000-2010. A remarkable 5 years with double digit snowfall amounts in NYC. Big shift to a more +NAO during December after 2010.
 

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Dec
Click column heading to sort ascending, click again to sort descending.
Year
Total Snowfall 
Missing Count
2019 1.8 15
2018 T 0
2017 7.7 0
2016 3.2 0
2015 T 0
2014 1.0 0
2013 8.6 0
2012 0.4 0
2011 0.0 0
2010 20.1 0
2009 12.4 0
2008 6.0 0
2007 2.9 0
2006 0.0 0
2005 9.7 0
2004 3.0 0
2003 19.8 0
2002 11.0 0
2001 T 0
2000 13.4 0
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40 minutes ago, bluewave said:

We may never see another December 11 year epic snowfall run like from 2000 to 2010.  A remarkable 5 years with double digit snowfall amounts in NYC.
 

Time Series Summary for NY CITY CENTRAL PARK, NY - Month of Dec
Click column heading to sort ascending, click again to sort descending.
Year
Total Snowfall 
Missing Count
2019 1.8 15
2018 T 0
2017 7.7 0
2016 3.2 0
2015 T 0
2014 1.0 0
2013 8.6 0
2012 0.4 0
2011 0.0 0
2010 20.1 0
2009 12.4 0
2008 6.0 0
2007 2.9 0
2006 0.0 0
2005 9.7 0
2004 3.0 0
2003 19.8 0
2002 11.0 0
2001 T 0
2000 13.4 0

big difference from the Decembers from the 1960's to the 1970's...

1960s dec temp.png

1970s dec temp.png

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13 minutes ago, uncle W said:

big difference from the Decembers from the 1960's to the 1970's...

 

 

March has become the new December since 2011.

Monthly Total Snowfall for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Year
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Season
Mean 0.4 1.4 2.6 11.3 9.5 7.3 0.7 33.2
2018-2019 0.0 6.4 T 1.1 2.6 10.4 0.0 20.5
2017-2018 0.0 T 7.7 11.2 4.9 11.6 5.5 40.9
2016-2017 0.0 T 3.2 7.9 9.4 9.7 0.0 30.2
2015-2016 0.0 0.0 T 27.9 4.0 0.9 T 32.8
2014-2015 0.0 0.2 1.0 16.9 13.6 18.6 0.0 50.3
2013-2014 0.0 T 8.6 19.7 29.0 0.1 T 57.4
2012-2013 0.0 4.7 0.4 1.5 12.2 7.3 0.0 26.1
2011-2012 2.9 0.0 0.0 4.3 0.2 0.0 0.0 7.4

 

Monthly Total Snowfall for ISLIP-LI MACARTHUR AP, NY
Click column heading to sort ascending, click again to sort descending.
Year
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Season
Mean 0.0 1.1 2.3 15.5 12.8 9.9 0.6 42.3
2018-2019 0.0 4.3 T 0.9 3.5 4.1 T 12.8
2017-2018 0.0 T 6.0 22.0 1.4 31.9 4.6 65.9
2016-2017 T T 3.2 14.0 14.7 7.4 T 39.3
2015-2016 0.0 0.0 T 24.8 13.2 3.2 0.2 41.4
2014-2015 0.0 T 0.4 30.2 13.4 19.7 0.0 63.7
2013-2014 0.0 0.3 8.1 25.2 24.5 5.4 0.2 63.7
2012-2013 0.0 4.2 0.6 3.3 31.4 7.4 0.0 46.9
2011-2012 0.3 0.0 T 3.8 0.6 T 0.0 4.7

 

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19 minutes ago, bluewave said:

March has become the new December since 2011.

Monthly Total Snowfall for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Year
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Season
Mean 0.4 1.4 2.6 11.3 9.5 7.3 0.7 33.2
2018-2019 0.0 6.4 T 1.1 2.6 10.4 0.0 20.5
2017-2018 0.0 T 7.7 11.2 4.9 11.6 5.5 40.9
2016-2017 0.0 T 3.2 7.9 9.4 9.7 0.0 30.2
2015-2016 0.0 0.0 T 27.9 4.0 0.9 T 32.8
2014-2015 0.0 0.2 1.0 16.9 13.6 18.6 0.0 50.3
2013-2014 0.0 T 8.6 19.7 29.0 0.1 T 57.4
2012-2013 0.0 4.7 0.4 1.5 12.2 7.3 0.0 26.1
2011-2012 2.9 0.0 0.0 4.3 0.2 0.0 0.0 7.4

 

Monthly Total Snowfall for ISLIP-LI MACARTHUR AP, NY
Click column heading to sort ascending, click again to sort descending.
Year
Oct
Nov
Dec
Jan
Feb
Mar
Apr
Season
Mean 0.0 1.1 2.3 15.5 12.8 9.9 0.6 42.3
2018-2019 0.0 4.3 T 0.9 3.5 4.1 T 12.8
2017-2018 0.0 T 6.0 22.0 1.4 31.9 4.6 65.9
2016-2017 T T 3.2 14.0 14.7 7.4 T 39.3
2015-2016 0.0 0.0 T 24.8 13.2 3.2 0.2 41.4
2014-2015 0.0 T 0.4 30.2 13.4 19.7 0.0 63.7
2013-2014 0.0 0.3 8.1 25.2 24.5 5.4 0.2 63.7
2012-2013 0.0 4.2 0.6 3.3 31.4 7.4 0.0 46.9
2011-2012 0.3 0.0 T 3.8 0.6 T 0.0 4.7

 

in the late 1950's to 1970 March was a winter month and so was December...

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On 12/15/2019 at 2:32 PM, SnoSki14 said:

Not looking forward to the cold midweek. That's a potent though thankfully brief shot of arctic air.

Highs in the mid 20s with lows in the mid to low teens look likely. 

I'll be ecstatic when we get that break and have some dry weather that lasts a week or more.

 

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10 minutes ago, CPcantmeasuresnow said:

Very true.

Yet somehow 4 of the last 5 years in NYC March has been the snowiest month of the season.

well if you look back to the 50s, when March was the snowiest month, it seems that the pattern is that when March is a snowy month it means that the winter was not all that snowy.

 

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3 hours ago, bluewave said:

The high temperatures after this Arctic shot will be mostly dependent on wind direction. Days with more SE flow and a high pressure  to our NE will mostly max out in the 40’s. But any SW flow days could reach the 50’s between the 23rd and 31st.

as long as it's dry I dont care- I've had enough of this dreary weather.

 

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3 hours ago, purduewx80 said:

If the NAM verifies, conditions will become favorable late tomorrow afternoon and evening for scattered snow squalls ahead of our Arctic frontal passage. 8C/km lapse rates and best lift in the DGZ. This suggests some brief whiteout conditions are possible.

SHSN_121819.thumb.png.0f6f9ef04aea163e9c8bf73ba3b33586.png

This reminds me of the snow squall we had last winter

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Just now, LibertyBell said:

Thats wonderful- we get most of our snow in January and February anyway, so dry weather is preferred in December :-)

 

The first 17 days of the month have been near the wettest on record. So we need a break. The holiday shoppers and travelers will appreciate the step down in heavy precipitation.

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21 minutes ago, bluewave said:

The first 17 days of the month have been near the wettest on record. So we need a break. The holiday shoppers and travelers will appreciate the step down in heavy precipitation.

yes and lack of sunshine makes me grumpy (and also allergic).... I had to take benadryl again a few days ago when we were in the 50s and it was raining.  For some reason I dont get allergies when it's snowing lol.

 

 

 

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1 minute ago, LibertyBell said:

yes and lack of sunshine makes me grumpy (and also allergic).... I had to take benadryl again a few days ago.

 

This was the wettest first 16 days of December on record at JFK.

Time Series Summary for JFK INTL AP, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Total Precipitation Dec 1 to Dec 16
Missing Count
1 2019-12-16 6.10 0
2 2014-12-16 5.60 0
3 1974-12-16 5.48 0
4 1996-12-16 5.07 0
5 2008-12-16 3.99 0
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1 minute ago, bluewave said:

This was the wettest first 16 days of December on record at JFK.

Time Series Summary for JFK INTL AP, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Total Precipitation Dec 1 to Dec 16
Missing Count
1 2019-12-16 6.10 0
2 2014-12-16 5.60 0
3 1974-12-16 5.48 0
4 1996-12-16 5.07 0
5 2008-12-16 3.99 0

I think JFK was the jackpot of the local airports over the weekend, that was about 2.5" of rain.

 

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24 minutes ago, LibertyBell said:

I think JFK was the jackpot of the local airports over the weekend, that was about 2.5" of rain.

 

Yeah, one the heaviest 2 day rainfalls on record for December.

Maximum 2-Day Total Precipitation 
for JFK INTL AP, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Value
Ending Date
Missing Days
Period of record: 1948-07-17 to 2019-12-16
1 3.23 2008-12-12 0
2 3.15 2014-12-10 0
3 3.04 2014-12-09 0
4 3.00 1992-12-11 0
5 2.95 1996-12-07 0
6 2.86 1948-12-31 0
7 2.77 2019-12-14 0
8 2.75 1992-12-12 0
9 2.46 1974-12-17 0
- 2.46 1974-12-16 0
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Christmas Week is looking like 1982.       Ultimately that winter proved to be a 10-day flyby in the second week of Feb.       There seems to be almost no sub-zero 850mb T's during the period.

A dog chasing his own tail analogy may start to apply if early Jan. does not  change this, and promises of cold slip further into the future again.

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