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December 2022


dmillz25
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Despite bright sunshine, temperatures were locked in the teens all day across the region. The core of the coldest air is now slowly departing.

Tomorrow will be fair but continued very cold before steady moderation commences early next week. The first week of January will likely see much above normal temperatures across the region.

The ENSO Region 1+2 anomaly was -0.1°C and the Region 3.4 anomaly was -0.9°C for the week centered around December 14. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.95°C and the ENSO Region 3.4 anomaly has averaged -0.92°C. La Niña conditions will likely persist through mid-winter.

The SOI was +25.33 today.

The preliminary Arctic Oscillation (AO) was -3.611 today.

On December 22 the MJO was in Phase 4 at an amplitude of 1.789 (RMM). The December 21-adjusted amplitude was 1.357 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 88% probability that New York City will have a colder than normal December (1991-2020 normal). December will likely finish with a mean temperature near 37.6° (1.5° below normal).

 

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Yesterday as reported in the storm thread, NYC set a new record of 50 F deg for daily range (max 58, min 8). 

Today another record is now confirmed. The high of 15 at NYC establishes a new record temperature fall for maximum dailies, day to day as shown below:

_ Rank ___ Dates _______________ From _ To ___ diff

_ 01 ____ 2022 Dec 23-24 ______ 58 __ 15 ____-43

_ 02 _____1918 Feb 20-21 ________59 __ 18 ____-41

_ 03 ____ 1921 Mar 28-29 _______82 __ 42 ___ -40

_ 04 ____ 1927 Dec 8 - 9 ________65 __ 26 ___ -39

_ 05 ____ 1915 Apr 26-27 _______ 92 __ 54 ___ -38

_t06 ____ 1896 Feb 16-17 _______ 44 ___ 7 ___ -37

_t06 ____ 1978 Jan 9-10 ________ 58 __ 21 ___ -37

_t06 ____ 2003 Apr 16-17 _______ 88 __ 51 ___ -37

_t09 ____ 1876 Jan 10-11 ________60 __ 24 ___ -36

_t09 ____ 1911 Nov 12-13 ________69 __ 33 ___ -36 

_t09 ____ 1933 Feb 8 - 9 ________ 60 __ 24 ___ -36

_t09 ____ 1970 Feb 3 - 4 _________56 __ 20 ___ -36

_t09 ____ 2014 Jan 6 - 7 ________ 55 __ 19 ____ -36

_t14 ____ 1890 Feb 5 - 6 ________ 68 __ 33 ____ -35

_t14 ___1898 Dec 31-1899 Jan 1_ 53 __ 18 ____ -35

_t14 ____ 1918 Jan 12-13 _________53 __ 18 ____ -35

_t14 ____ 1934 Mar 18-19 ________71 __ 36 ____ -35

_t14 ____ 1939 Apr 25-26 _______ 86 __ 51 ____ -35

_t14 ____ 1959 Mar 21-22 _______ 69 __ 34 ____ -35

____________________________________________

The largest differential in the opposite direction was 34 F deg, set on these four occasions: 

* Dec 22-23 1871 rose from max 21 to 55

* Feb 5-6 1918 rose from max 4 to 38

* Mar 15-16 1935 rose from max 43 to 77

* Apr 11-12 1977 rose from max 56 to 90

Since the last of those, 33 deg is the highest day to day rise, achieved Apr 8-9 2001 (45 to 78). The only previous 33 deg rise was Apr 6-7 1929 (56 to 89). So these all told are the top six in the upward direction. 

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18 hours ago, LibertyBell said:

I'm actually surprised it got that cold in 2013-14, I thought that winter was all about borderline temperatures and had lots of snow but most of them switched over to rain.

2014-15 had more pure snow and was much colder.

I see April 2000 in this list and going from 75 to 32 on the 9th, was that when we had 1-2 inches of snow in April 2000?

 

That was a cold JFM after a mild December. 50°+ days have been getting closer to days with lows below 20° during the winter. So it makes it easier for big temperature swings. We have also been seeing more snowstorms near 50° days. This pattern started to become more pronounced around 2005.

 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2022-12-23 58 8
2022-12-24 15 7


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2022-02-14 25 16
2022-02-15 30 16
2022-02-16 49 28
2022-02-17 68 49
2022-02-18 63 27


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2020-12-19 32 20
2020-12-20 40 31
2020-12-21 46 37
2020-12-22 46 38
2020-12-23 45 36
2020-12-24 59 43
2020-12-25 61 29
Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2019-01-30 35 6
2019-01-31 16 2
2019-02-01 21 11
2019-02-02 34 16
2019-02-03 53 33
2019-02-04 61 41
2019-02-05 65 44


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2018-01-05 19 9
2018-01-06 13 6
2018-01-07 18 5
2018-01-08 31 17
2018-01-09 44 30
2018-01-10 43 30
2018-01-11 53 41
2018-01-12 61 44
2018-01-13 58 19


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2017-12-19 55 45
2017-12-20 51 34
2017-12-21 39 32
2017-12-22 50 35
2017-12-23 48 38
2017-12-24 41 36
2017-12-25 38 28
2017-12-26 28 23
2017-12-27 24 17
2017-12-28 18 11
2017-12-29 22 11
2017-12-30 23 17
2017-12-31 21 9


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2017-01-07 26 20
2017-01-08 25 16
2017-01-09 23 14
2017-01-10 46 21
2017-01-11 52 42
2017-01-12 66 47
2017-01-13 62 32


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2016-02-13 22 6
2016-02-14 15 -1
2016-02-15 35 13
2016-02-16 54 35
2016-02-17 39 35
2016-02-18 36 27
2016-02-19 39 24
2016-02-20 61 39
2016-02-21 55 44
2016-02-22 52 38


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2016-01-04 36 14
2016-01-05 29 11
2016-01-06 41 25
2016-01-07 46 31
2016-01-08 46 31
2016-01-09 47 40
2016-01-10 59 40


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2015-01-04 56 41
2015-01-05 49 21
2015-01-06 22 19
2015-01-07 23 9
2015-01-08 21 8
2015-01-09 33 19
2015-01-10 23 16
2015-01-11 37 18


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2014-02-22 54 40
2014-02-23 54 43
2014-02-24 44 27
2014-02-25 33 24
2014-02-26 31 20
2014-02-27 34 14
2014-02-28 24 9


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2014-01-03 18 9
2014-01-04 29 8
2014-01-05 40 27
2014-01-06 55 19
2014-01-07 19 4
2014-01-08 22 9
2014-01-09 32 22
2014-01-10 37 30
2014-01-11 58 37
2014-01-12 54 38
2014-01-13 51 37
2014-01-14 52 44


 

Data for NY CITY CENTRAL PARK, NY
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Date
Max Temperature 
Min Temperature 
2013-12-21 65 51
2013-12-22 71 61
2013-12-23 64 42
2013-12-24 42 26
2013-12-25 31 19


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2013-02-15 55 37
2013-02-16 41 31
2013-02-17 32 18
2013-02-18 35 17


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2013-01-19 51 30
2013-01-20 53 30
2013-01-21 32 26
2013-01-22 27 13
2013-01-23 20 11
2013-01-24 22 12
2013-01-25 24 13
2013-01-26 27 15
2013-01-27 34 19
2013-01-28 36 29
2013-01-29 49 36
2013-01-30 59 39
2013-01-31 61 30


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2012-01-03 33 15
2012-01-04 27 13
2012-01-05 40 27
2012-01-06 53 35
2012-01-07 62 46


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2011-02-09 29 15
2011-02-10 29 22
2011-02-11 37 19
2011-02-12 40 30
2011-02-13 46 28
2011-02-14 58 37
2011-02-15 37 25
2011-02-16 48 26
2011-02-17 63 46
2011-02-18 67 46
2011-02-19 54 23
2011-02-20 40 21
2011-02-21 37 24
2011-02-22 36 16


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2010-01-24 50 32
2010-01-25 57 49
2010-01-26 49 35
2010-01-27 39 31
2010-01-28 42 20
2010-01-29 23 16
2010-01-30 20 13
2010-01-31 30 14


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2009-02-05 23 12
2009-02-06 32 15
2009-02-07 50 28
2009-02-08 58 38
2009-02-09 45 33
2009-02-10 50 35
2009-02-11 65 45


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2008-12-15 67 48
2008-12-16 58 30
2008-12-17 42 32
2008-12-18 42 36
2008-12-19 37 29
2008-12-20 31 22
2008-12-21 37 25
2008-12-22 27 13


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2008-02-05 52 38
2008-02-06 68 41
2008-02-07 49 38
2008-02-08 45 35
2008-02-09 44 37
2008-02-10 44 15
2008-02-11 24 10
2008-02-12 31 17


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2008-01-02 38 17
2008-01-03 20 12
2008-01-04 36 16
2008-01-05 43 32
2008-01-06 50 36
2008-01-07 62 45
2008-01-08 64 53
2008-01-09 64 47


 

Data for NY CITY CENTRAL PARK, NY
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Date
Max Temperature 
Min Temperature 
2006-12-01 70 49
2006-12-02 49 39
2006-12-03 46 35
2006-12-04 41 31
2006-12-05 37 29
2006-12-06 49 31
2006-12-07 53 26
2006-12-08 29 18


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2006-02-15 56 36
2006-02-16 59 40
2006-02-17 58 32
2006-02-18 35 15
2006-02-19 30 15


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2006-01-15 32 16
2006-01-16 32 16
2006-01-17 44 26
2006-01-18 58 36
2006-01-19 47 34
2006-01-20 61 42
2006-01-21 63 38


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2005-02-15 56 46
2005-02-16 54 35
2005-02-17 38 31
2005-02-18 31 18
2005-02-19 32 16


 

Data for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Date
Max Temperature 
Min Temperature 
2005-01-13 59 38
2005-01-14 66 34
2005-01-15 34 26
2005-01-16 31 27
2005-01-17 28 18
2005-01-18 18 9
2005-01-19 26 9
2005-01-20 30 20
2005-01-21 20 9
2005-01-22 25 6
2005-01-23 26 9
2005-01-24 24 8
2005-01-25 33 20
2005-01-26 37 17
2005-01-27 18 9
2005-01-28 22 5
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Morning thoughts…

Today will be mostly sunny and very cold.  High temperatures will reach the upper 20s in most areas.  Likely high temperatures around the region include:

New York City (Central Park): 27°

Newark: 29°

Philadelphia: 29°

A slow but steady warming trend will continue tomorrow.

Normals:

New York City: 30-Year: 41.9°; 15-Year: 42.8°

Newark: 30-Year: 42.4°; 15-Year: 43.5°

Philadelphia: 30-Year: 43.7°; 15-Year: 44.7°

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18 minutes ago, coastalplainsnowman said:

Jan 2005 above has always been noteworthy for me.  I wonder if there’s ever been a winter month since records began which can be so perfectly, evenly, divided between such a much above normal first half and much below normal second half.

I believe it’s the only winter month in NYC when the first half had  top 10 warmth followed by top 10 cold in the second part.


 

Time Series Summary for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Mean Avg Temperature Jan 1 to Jan 15
Missing Count
1 2007-01-15 46.4 0
2 1932-01-15 44.0 0
3 1950-01-15 43.6 0
4 1907-01-15 43.5 0
5 1998-01-15 43.3 0
6 2020-01-15 42.7 0
7 2005-01-15 42.2 0
8 1937-01-15 42.1 0
9 1930-01-15 41.7 0
10 1890-01-15 41.4 0


 

Time Series Summary for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Ending Date
Mean Avg Temperature Jan 16 to Jan 31
Missing Count
1 1888-01-31 16.8 0
2 1977-01-31 19.6 0
3 1961-01-31 20.5 0
4 2005-01-31 21.1 0
- 1948-01-31 21.1 0
5 1920-01-31 21.2 0
6 2004-01-31 21.3 0
7 1936-01-31 21.5 0
8 1935-01-31 21.9 0
9 1918-01-31 22.2 0
10 2003-01-31 22.4 0
- 1940-01-31 22.4 0
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The last 7 days of December are averaging     32degs.(28/37) or -2.

Month to date is    39.7[-1.4].        December should end at   37.5[-1.6] from current 30 Year Normal.    (+1.6, based on the 1960's 30 Year Normal.)

Reached 15 here yesterday---basically 14/15 from 3pm to midnight.

Today:   26-30, wind w.-still breezy, p. sunny, 22 tomorrow AM.

Up a mountain and back down:

1671948000-EPY4rXMHBRo.png

17*(60%RH) here at 6am.{low 15 at midnight}       19* at 9am.       21* at 10am.      23* at Noon.      26* at 2pm.      27* at 3pm.       Reached 28* at 4pm.       24* at 8pm.

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A steady moderation of temperatures will commence tomorrow. By the end of the week, temperatures could reach or exceed 50° in much of the area. The first week of January will likely see much above normal temperatures across the region.

It appears increasingly likely that 2022 will become the 14th year during which New York City receives no measurable snowfall through December 31. During the 13 prior years, mean seasonal snowfall was 16.0". Just 8% of those winters rallied to see 30" or more seasonal snowfall. 31% of those winters wound up with less than 10" of seasonal snowfall. Just under half (46%) had 20" or more seasonal snowfall. The lowest seasonal snowfall for those cases of 2.8" was recorded in 1972-1973. The highest seasonal snowfall for those cases was 32.8", which occurred during 2015-2016.

The ENSO Region 1+2 anomaly was -0.1°C and the Region 3.4 anomaly was -0.9°C for the week centered around December 14. For the past six weeks, the ENSO Region 1+2 anomaly has averaged -0.95°C and the ENSO Region 3.4 anomaly has averaged -0.92°C. La Niña conditions will likely persist through mid-winter.

The SOI was +17.59 today.

The preliminary Arctic Oscillation (AO) was -3.297 today.

On December 23 the MJO was in Phase 5 at an amplitude of 1.917 (RMM). The December 22-adjusted amplitude was 1.799 (RMM).

Based on sensitivity analysis applied to the latest guidance, there is an implied 93% probability that New York City will have a colder than normal December (1991-2020 normal). December will likely finish with a mean temperature near 37.6° (1.5° below normal).

 

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