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February 2016 Forecasts/Disco/Obs


snowman19

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Not to tread into a debate, but how accurate are the Arctic readings of 1932? I'm concerned with the amount of data in filing currently.

Even if one sets aside the Arctic regions and just focuses on the populated areas where there was a density of instruments, the difference between 1931-32 and 2015-16 is large.

 

FWIW, Arctic sea ice extent has now set daily record low figures for 16 consecutive days. Moreover, if one constructed an artificial January 1-February 22 period comprised of just the pre-2016 record low extent figures, average sea ice extent for 2016 would be running below the average for that artificial period. It's pretty safe to say that the Arctic is much warmer this winter than it was during 1931-32, even if there is some degree of uncertainty in the magnitude of the difference.

 

Of course, all of this probably belongs in the climate subforum, so I'll limit myself to the above points.

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We beat both the snowfall and low temperature records by a wide margin for warmest winters in NYC over 40 degrees.

 

 

DJF temp....year....snowfall....winter minimum temperature

 

41.5..........01-02.......3.5"..............19

40.5..........11-12.......7.4"..............13

40.4..........15-16......31.2".............-1....through February 22nd

40.1..........31-32.......5.3".............18

 

Haha, wow.  "Which one of these is not like the others?"

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Select February and December-February Temperature Scenarios for NYC:

 

Baseline: February: +1.9°; December-February Average Temperature: 40.9° (2nd warmest winter)

Cold: February: +1.4°; December-February Average Temperature: 40.8° (2nd warmest winter)

Warm: February: +2.4°; December-February Average Temperature: 41.1° (2nd warmest winter)

 

Baseline = Actual 2/1-24 data, 2/25 high of 60°, and GFS MOS for February's remaining days

Cold Scenario: Actual data used in the baseline scenario + MOS - 3° for February's remaining days

Warm Scenario: Actual data used in the baseline scenario + MOS + 3° for February's remaining days

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JFK is as close as you can get to a 40-40 winter. If you put that seasonal

forecast out in October or November there would have been a million

posts of disbelief on here. Could have had a thread with the most replies

of all-time. ;)

 

Through February 25th......39.5 inches of snow.....40.6 average temperature.

 

I think as Don pointed out, the only other East Coast occurrence was Norfolk, VA in DJF 79-80.

 

Seasonal snowfall.....41.9 inches.....average temperature 40.2.

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JFK is as close as you can get to a 40-40 winter. If you put that seasonal

forecast out in October or November there would have been a million

posts of disbelief on here. Could have had a thread with the most replies

of all-time. ;)

 

Through February 25th......39.5 inches of snow.....40.6 average temperature.

 

I think as Don pointed out, the only other East Coast occurrence was Norfolk, VA in DJF 79-80.

 

Seasonal snowfall.....41.9 inches.....average temperature 40.2.

Amazing-hope they can get 1/2 inch to seal the deal, but in this pattern who knows, they may be done.   Also, 42 inches of snow in Norfolk is like getting 150 inches here-getting 10 inches there is a difficult feat.

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The average temperature on Febraury 28th in NYC is 38 degrees and on February 29th it is 33 degrees then back to 38 on March 1.

Obviously just an oddity of 7 or 8 days making up a 30 year average vs all days but still a little odd there's such a deviation. This year looks to be way above normal.

 

I wonder if a similar dynamic is in play back to the 1860's at Belvidere...that would probably encompass just under 40 February 29ths...

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Amazing-hope they can get 1/2 inch to seal the deal, but in this pattern who knows, they may be done.   Also, 42 inches of snow in Norfolk is like getting 150 inches here-getting 10 inches there is a difficult feat.

 

Not really...the lower a station's average annual snowfall, the higher anomalous deviations percentage wise become possible.  In other words, it is far easier for Norfolk to get 24 inches of snow in a single winter (400% of normal) than it is for Albany, NY to get 400% of their average annual snowfall in a single winter...which would be about 240 inches given their 60 inch average...they have never even been close to that.

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Today will be the 39th day of reaching 50 degrees or greater this winter in NYC.

Another remarkable stat is that this passes the 36 days of 50 or higher in the

2001-2002 winter. But NYC has 31.2 inches of snowfall this winter vs only 3.5

in 2001-2002. NYC was also able to reach -1 this winter while 2001-2002

only got down to 19 degrees.

 

Another set of weather extremes to add to the long list during the 2000's.

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The average temperature on Febraury 28th in NYC is 38 degrees and on February 29th it is 33 degrees then back to 38 on March 1.

Obviously just an oddity of 7 or 8 days making up a 30 year average vs all days but still a little odd there's such a deviation. This year looks to be way above normal.

The more sound approach would be to take the averages between 2/28 and 3/1 rather than rely on a clearly unrepresentative sample.

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Today will be the 39th day of reaching 50 degrees or greater this winter in NYC.

Another remarkable stat is that this passes the 36 days of 50 or higher in the

2001-2002 winter. But NYC has 31.2 inches of snowfall this winter vs only 3.5

in 2001-2002. NYC was also able to reach -1 this winter while 2001-2002

only got down to 19 degrees.

 

Another set of weather extremes to add to the long list during the 2000's.

Just an all out inferno going back to last August.  February will go out with a bang tomorrow with many seeing 60+

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Just an all out inferno going back to last August.  February will go out with a bang tomorrow with many seeing 60+

 

The flip to warm after last JFM was pretty remarkable. This winter has to be the best snow and below zero

production in a sea of warm pattern ever. 

 

 

 

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Just an all out inferno going back to last August.  February will go out with a bang tomorrow with many seeing 60+

March will very likely continue the stretch of warmer than normal months. The early month blocking isn't strong enough to offset the shortening wave lengths. Should the blocking break down for the second half of the month, a very warm ending isn't out of the question.

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