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No-snow Decembers


Alpha5

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Looking at the current pattern it makes me wonder how the winters will be by 2100.

That is a *really* feckless comment based on a few weeks of above normal temps....

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The pattern for 77/78 was way different.  The air masses were much colder over the US, this winter almost the whole 48 except New Mexico and parts of Colorado are all above normal.  Looking at the current pattern it makes me wonder how the winters will be by 2100.

Are you suggesting that global warming will become more of an inevitable factor that will torch the winters for the entire USA from here on out? Alaska and the Pacific NW are averaging much colder than normal, especially for November. Also, there is a good supply of Arctic air just waiting in the wings in Northeastern Canada. It's not like we are in 1997-1998; where there was no cold air to be found in our part of the globe that winter.

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Since records began, NYC has went snowless in december only twice. The first was back in 1877 and the second in 2006.

Only a trace was recorded in the following years

1882

1885

1888

1891

1936

1943

1953

1965

1971

1972

1994

1996

1997

1999

2001

some of these years had snow in October or November...1882 had 14" in November...1953 had snow in early November...January 1954 was cold and snowy but February and March was benign...January 2000 became cold and snowy for about a month then turned warm again...We could still see snow before January with another cold front that has a trailing low with it...we also need some cold air which is hard to come by so far...

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The pattern for 77/78 was way different. The air masses were much colder over the US, this winter almost the whole 48 except New Mexico and parts of Colorado are all above normal. Looking at the current pattern it makes me wonder how the winters will be by 2100.

I agree.

1977-78 fell within a cluster of exceptionally cold winters. For what it is worth, 1976-77, 1977-78, and 1978-79 each had 25 or more subfreezing days in NYC:

1976-77: 40 days

1977-78: 34 days

1978-79: 25 days

Here's the number of subfreezing days beginning with 2000-01:

2000-01: 12 days

2001-02: 2 days (tied with 1997-98 for lowest figure)

2002-03: 24 days

2003-04: 25 days

2004-05: 16 days

2005-06: 6 days

2006-07: 16 days

2007-08: 5 days

2008-09: 20 days

2009-10: 15 days

2010-11: 19 days

So far, 2011-12 has had no such days. Today could be a close call for the first such day.

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1977-78 fell within a cluster of exceptionally cold winters. For what it is worth, 1976-77, 1977-78, and 1978-79 each had 25 or more subfreezing days in NYC:

1976-77: 40 days

1977-78: 34 days

1978-79: 25 days

Here's the number of subfreezing days beginning with 2000-01:

2000-01: 12 days

2001-02: 2 days (tied with 1997-98 for lowest figure)

2002-03: 24 days

2003-04: 25 days

2004-05: 16 days

2005-06: 6 days

2006-07: 16 days

2007-08: 5 days

2008-09: 20 days

2009-10: 15 days

2010-11: 19 days

So far, 2011-12 has had no such days. Today could be a close call for the first such day.

that period from January 1976 to January 1985 had some really cold outbreaks...Seven out of ten years had temperatures near or below zero on its coldest day...At Centraol Park 1976-77 had 45 days with a maximum of 32 or lower...1977-78 without the extreme cold as the previous year had 42 days with a max 32 or lower...You have to go back to 1917-18 and 1933-34 to get a similar amount of days...At the time some were calling for an ice age...

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that period from January 1976 to January 1985 had some really cold outbreaks...Seven out of ten years had temperatures near or below zero on its coldest day...At Centraol Park 1976-77 had 45 days with a maximum of 32 or lower...1977-78 without the extreme cold as the previous year had 42 days with a max 32 or lower...You have to go back to 1917-18 and 1933-34 to get a similar amount of days...At the time some were calling for an ice age...

Weren't there some such periods in 1987-8, 1968-9, 1969-70 and 1970-1? Not to forget 1960-1?
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that period from January 1976 to January 1985 had some really cold outbreaks...Seven out of ten years had temperatures near or below zero on its coldest day...At Centraol Park 1976-77 had 45 days with a maximum of 32 or lower...1977-78 without the extreme cold as the previous year had 42 days with a max 32 or lower...You have to go back to 1917-18 and 1933-34 to get a similar amount of days...At the time some were calling for an ice age...

I agree.

Coldest 5 Winters (DJF) beginning with 1970-71:

1. 1976-77 28.5°

2. 1977-78 30.3°

3. 1993-94 31.2°

4. 2002-03 31.2°

5. 1970-71 32.2°

Coldest 5 Winters/Early Spring (DJFM) beginning with 1970-71:

1. 1977-78 32.5°

2. 1976-77 33.1°

3. 1993-94 33.6°

4. 1995-96 33.9°

5. 1993-94 and 2002-03 34.2°

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that period from January 1976 to January 1985 had some really cold outbreaks...Seven out of ten years had temperatures near or below zero on its coldest day...At Centraol Park 1976-77 had 45 days with a maximum of 32 or lower...1977-78 without the extreme cold as the previous year had 42 days with a max 32 or lower...You have to go back to 1917-18 and 1933-34 to get a similar amount of days...At the time some were calling for an ice age...

least amount of max days 32 or lower since 1930...

max days

2 1952-53

3 1997-98

3 2001-02

4 1998-99

5 1931-32

6 2007-08

7 1990-91

7 1992-93

8 1974-75

9 1948-49

9 1991-92

10 2005-06

most max days 32 or lower since 1930...

max days

45 1976-77

42 1977-78

39 1935-36

38 1933-34

32 1947-48

31 1993-94

31 2002-03

30 1980-81

30 1995-96

29 1983-84

29 1962-63

29 1939-40

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Looking back at some of the winter forecasts from October calling for another 40+ inch winter, I thought it'd be interesting to see what winters with little snowfall in December tended to produce for the rest of the winter. Using the list that Alpha5 provided for Decembers with a trace of snowfall or no snow at all, except for one year, 1882, which had a big November snowstorm, the rest of these winters, even with pre-December accumulations, ended up with below average snowfall, with none of those winters ending up with 30+ inches. Although the last few years have been more unpredictable, these statistics strongly suggest that not only is a 40+ inch winter unlikely, but that historically, there would be a far greater probability of below average snowfall this winter if we don't see any snow through the end of December, which is a possibility. I don't have the link typically used for temperature departures for analog years (I lost it when my laptop died), but I would assume that a good portion of these winters also featured above average temperatures. We've been surprised before and there have been snowstorms that brought up the total winter snowfall much closer to average, but the persistent pattern in place as well as the historical references suggest that there's not much luck this winter for passing average snowfall by much, if at all.

Note: Years bolded had accumulating snowfall in November.

Year ---- Total winter snowfall

1877 ---- 8.1"

1882 ---- 44.0"

1885 ---- 20.8"

1888 ---- 16.5"

1891 ---- 25.4"

1936 ---- 15.6"

1943 ---- 23.8"

1953 ---- 15.8"

1965 ---- 21.4"

1971 ---- 22.9"

1972 ---- 2.8"

1994 ---- 11.8"

1996 ---- 10.0"

1997 ---- 5.5"

1999 ---- 16.3"

2001 ---- 3.5"

2006 ---- 12.4"

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Looking back at some of the winter forecasts from October calling for another 40+ inch winter, I thought it'd be interesting to see what winters with little snowfall in December tended to produce for the rest of the winter. Using the list that Alpha5 provided for Decembers with a trace of snowfall or no snow at all, except for one year, 1882, which had a big November snowstorm, the rest of these winters, even with pre-December accumulations, ended up with below average snowfall, with none of those winters ending up with 30+ inches. Although the last few years have been more unpredictable, these statistics strongly suggest that not only is a 40+ inch winter unlikely, but that historically, there would be a far greater probability of below average snowfall this winter if we don't see any snow through the end of December, which is a possibility. I don't have the link typically used for temperature departures for analog years (I lost it when my laptop died), but I would assume that a good portion of these winters also featured above average temperatures. We've been surprised before and there have been snowstorms that brought up the total winter snowfall much closer to average, but the persistent pattern in place as well as the historical references suggest that there's not much luck this winter for passing average snowfall by much, if at all.

Note: Years bolded had accumulating snowfall in November.

Year ---- Total winter snowfall

1877 ---- 8.1"

1882 ---- 44.0"

1885 ---- 20.8"

1888 ---- 16.5"

1891 ---- 25.4"

1936 ---- 15.6"

1943 ---- 23.8"

1953 ---- 15.8"

1965 ---- 21.4"

1971 ---- 22.9"

1972 ---- 2.8"

1994 ---- 11.8"

1996 ---- 10.0"

1997 ---- 5.5"

1999 ---- 16.3"

2001 ---- 3.5"

2006 ---- 12.4"

There is no other way to put it but... We're basically screwed.... When does spring start?

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  • 11 months later...
  • 2 weeks later...

If I am looking at the correct sources, this winter is only the third instance where NYC recorded two consecutive non-measurable December snowfall. Very sad for this so-called "good pattern that we did not have last winter."

I'm having a bad feeling about the rest of winter given the poor December-you would expect at least a fair December to enter into a great Jan/Feb. Most good winters here have at least one good Dec storm, such as 1995, 2000, 2002, 2003, 2009, 2010. There are some that didn't such as 1993 and 2004 although it seems you would want one to be on the safer side. Seems to be the exception vs. the rule to have a good winter with a bad December.

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NYC actually recorded 0.4 the other day and most likely we had 0.5-0.8 or so yesterday even though they reported a trace. Keep in mind though its not so much the amount itself as it is how you got there. How we got zero in 2001 or 2006 was quite a bit different than how we got 0.4 this month. There were 2 close calls which means we've got some storminess and cold air, in 2001 and 2006 we more or less had none....we had almost 5 inches of liquid at NYC this month vs. less than 3 inches both those years.

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NYC actually recorded 0.4 the other day and most likely we had 0.5-0.8 or so yesterday even though they reported a trace. Keep in mind though its not so much the amount itself as it is how you got there. How we got zero in 2001 or 2006 was quite a bit different than how we got 0.4 this month. There were 2 close calls which means we've got some storminess and cold air, in 2001 and 2006 we more or less had none....we had almost 5 inches of liquid at NYC this month vs. less than 3 inches both those years.

Central Park should have at least an inch so far...Snowfall so far this year is a head of most of the analogs ...

snowfall by New Years Day...

2012-13.....5.1"

1951-52.....3.3"

1953-54.....2.2"

1958-59.....3.8"

1978-79.....2.7"

1989-90.....6.1"

1996-97.....0.1"

2001-02.....trace

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Taking a look at years with a snowy Nov and bad Dec..

1882-83 0 0 0 0 14.0 T 9.4 10.1 10.0 0.5 0 0 44.0

In this year, we had a 12"+ Nov followed by nothing in Dec, ended up a great winter.

Good analog for my area so far, 12" Nov, and 0.2" Dec.

1898-99 0 0 0 0 19.0 1.5 5.3 25.3 4.8 0 0 0 55.9

Another year with a great Nov and bad Dec, ended up excellent..

1906-07 0 0 0 0 1.0 0.3 11.0 21.8 13.3 5.8 0 0 53.2

Bad through December, ended up with over 50".

1938-39 0 0 0 0 12.8 1.7 10.3 5.5 7.0 T 0 0 37.3

Less than 2" in Dec after a good Nov, finished above normal.

1978-79 0 0 0 0 2.2 0.5 6.6 20.1 T T 0 0 29.4

Didn't get going until Jan really, finished with normal snowfall in 78-79.

Given the snowstorm in Nov, the number of analogs are already low, but interestingly enough, many of those snowy Nov years featured bad Dec patterns, and then better Jan-Mar. So all hope is not lost with a poor Dec.

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those analogs had colder Decembers...

year...temp...

1882...30.6

1898...34.6

1906...34.2

1938...37.0

1978...38.9

December 1978 wasn't cold but it was colder than 2012...Some other years with snow in November and little in December...

1931...41.0

1953...41.3

1989...25.9

December 1989 was one of the coldest on record...Not a good analog...1931 and 1953 should be close to this years final Dec. average...1931 and 1989 had their biggest snowfall in November...

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