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March 2017 Discussion & Observations


Rtd208

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On 2/25/2017 at 8:16 AM, snowman19 said:

Really? January temps. And how exactly are we going to see January temps in March with no snowcover whatsoever, bare ground, totally unfrozen Great Lakes with waters that are warm as hell, a March sun overhead, long daylight hours, well below normal soil moisture, and Atlantic SSTAs that are torched all along the coast? Can you please explain for us how the airmass is not going to modify at all? How exactly is that going to work? 

Bumping. Going through the beginning of this thread.

Nobody expected this prolonged cold.

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3 minutes ago, Morris said:

Another favorite. We're struggling for 50's in the second half on the models.

Don't forget the accumulating snows over on page 9

 

I personally think arrogant fortune tellers who guarantee things are just as bad on this site, as the weenies they claim to hate... you're on a weather nerd blog, not a pro sports team... chill lol

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17 minutes ago, UlsterCountySnowZ said:

Don't forget the accumulating snows over on page 9

 

I personally think arrogant fortune tellers who guarantee things are just as bad on this site, as the weenies they claim to hate... you're on a weather nerd blog, not a pro sports team... chill lol

There is something off-putting about thousands of in your face posts presenting forecasts and declarations made with little skill, but with an overwhelming air of certainty.  But I'll not name the guilty poster. :)

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On 3/1/2017 at 10:23 AM, CIK62 said:

Latest CANSIPS is +3 to +4 for March, and about +2 for both April and May.    No below normal month indicated for the next 12, which would make a whopping 35 consecutive months of AN temperatures here since our great winter of 2014-15.   We might get a break with July/August which only lean AN a little.  I still bet the next BN month will be just an accident

BTW:  CANSIPS on Dec. 01 had our winter at +1, +3, +3, not bad work.

Just having a little fun because there is nothing going on.

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4 hours ago, snowman19 said:

There is snowcover now stupid. That would support the cold as I said. Maybe you're too dumb to comprehend that? 

I'm assuming that you are kidding, because the snow came after it became cold without snow cover.

 

It became cold because the pattern flipped. That's the only reason.

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6 hours ago, snowman19 said:

There is snowcover now stupid. That would support the cold as I said. Maybe you're too dumb to comprehend that? 

See this a response this board does not need.... this kind of stuff does not happen in the NE forum!

To be fair the pattern switched right at the time we received that grass top/car snowfall and since then it's been well below normal. So I disagree the pattern change was not a result of snow cover just now since we have a much deep snowpack the BN temps will persist for a extended period of time now. Most likely not changing until around the 25th back to normal. 

Its clear you can accept the fact that we were flat out wrong but let's move on. Weather is not an exact science and we all know it change very quickly. 

HUGE KUDOS to Uncle W for accurately predicting this past major storm to almost the day WELL in advance!

One more thing: one of the biggest reasons why I do not post much is because of some of the backlash that several known posters throw back at you. Everyone is entitled to their opinion with the backup of information that supports their opinion. Isn't this why we this forum was created!! Now let's stop being childish! Rant over!!

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51 minutes ago, Cfa said:

Take away the SSW event that occurred and we'd still be warm right?

The weak blocking near Greenland helped, but it wasn't all that impressive in itself as the the AO and NAO are still positive this month. It looks like the MJO, SOI, and Nino 1+2 warming interfering with the dominant La Nina winter pattern finished the process. Notice how the PAC NW vortex weakened with a piece going NW of Hawaii. This caused the SE ridge to shift SW closer to California and a trough to dominate the East for a change. The piece of the record cold PV over Arctic Canada coming SE also contributed to the cold.

 

winter pattern

A.gif.929d95f6e043311eae4fb568810fe5b1.gif

 

New March pattern

 

B.gif.ed5d25886745880e152ab5df97898abc.gif

 

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10 minutes ago, bluewave said:

The weak blocking near Greenland helped, but it wasn't all that impressive in itself as the the AO and NAO are still positive this month. It looks like the MJO, SOI, and Nino 1+2 warming interfering with the dominant La Nina winter pattern finished the process. Notice how the PAC NW vortex weakened with a piece going NW of Hawaii. This caused the SE ridge to shift SW closer to California and a trough to dominate the East for a change. The piece of the record cold PV over Arctic Canada coming SE also contributed to the cold.

 

winter pattern

A.gif.929d95f6e043311eae4fb568810fe5b1.gif

 

New March pattern

 

B.gif.ed5d25886745880e152ab5df97898abc.gif

 

Nice! I was thinking about asking you to post this...

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1 hour ago, Cfa said:

Take away the SSW event that occurred and we'd still be warm right?

 

It played a significant role in allowing the precursor pattern for this month's snowfalls, certainly. It was a constructive interference from improved tropical forcing, stratospheric perturbation, and AAM removal in the mid latitudes.

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10 minutes ago, Morris said:

As long as I don't ever forecast... lol

 

Those that ended winter did so without recognizing the large scale alterations which inexorably initiated about 6 weeks ago. Persistence forecasting only succeeds until something significant changes.

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1 hour ago, Isotherm said:

 

Those that ended winter did so without recognizing the large scale alterations which inexorably initiated about 6 weeks ago. Persistence forecasting only succeeds until something significant changes.

Not us. We saw the big March coming for a while. Even the analogs (1967, 1984, 1999, 2008) showed that March would be quite a bit colder than the rest of the winter. 1984 had a record warm February; 2008 had a very mild January. Both winters turned much colder in March. This is fairly typical for dying Ninas.

Now the big question: Can NYC get one more significant event with the trough coming down around 3/23? 

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13 hours ago, Morris said:

Just having a little fun because there is nothing going on.

Yes, the analogs failed the "Test of Tonaga", "Test of a Warrior" and could even it get the change right (after 23 months of the same motif) with 0-Lead Time.

This shows that if I am driving down a straight road, I can tie my steering wheel to go straight ahead and doze off.  I only have to be smart enough to wake up before the turn comes.    The analogs were asleep at the wheel   LOL

Well now they show, no sustained warmup before Tax Day, fwiw.  If most of the remainder of the year, features AN months, my idea that this month was an atmospheric miscue will be salvaged.

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5 hours ago, allgame830 said:

To be fair the pattern switched right at the time we received that grass top/car snowfall and since then it's been well below normal. So I disagree the pattern change was not a result of snow cover just now since we have a much deep snowpack the BN temps will persist for a extended period of time now.

 

Is there a correlation between mid-latitude snow cover and upper level wind patterns?

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This was one of our best low max streaks in quite some time during mid-March.

EWR

3/11 30 in 1937 31 in 2017 31 in 1969+
3/12 30 in 1984 32 in 2017 32 in 1934
3/13 31 in 2014 32 in 1980 34 in 1984+
3/14 32 in 2017 34 in 1932 35 in 1937
3/15 27 in 2017 27 in 1932 30 in 1993

 

NYC
 

3/11 28 in 1885 29 in 2017 29 in 1880
3/12 26 in 1900 28 in 1896 29 in 2017
3/13 12 in 1888 27 in 1896 30 in 1880
3/14 28 in 1892 29 in 1896 32 in 2017+
3/15 24 in 1900 26 in 2017

26 in 1932+

 

JFK

 

3/11 29 in 2017 32 in 1969 32 in 1960
3/12 29 in 1984 32 in 2017 32 in 1998
3/13 33 in 1980 34 in 2017 34 in 2014
3/14 35 in 2003 36 in 2017 37 in 1968
3/15 28 in 2017 29 in 1993 35 in 1992

 

LGA

 

3/11 31 in 2017 32 in 1998 32 in 1969+
3/12 28 in 1984 32 in 2017 32 in 1998+
3/13 33 in 2014 33 in 1980 34 in 1984
3/14 34 in 2017 36 in 1972 37 in 1975+
3/15 29 in 1993 30 in 2017 33 in 1992
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2 hours ago, bluewave said:

This was one of our best low max streaks in quite some time during mid-March.

EWR

3/11 30 in 1937 31 in 2017 31 in 1969+
3/12 30 in 1984 32 in 2017 32 in 1934
3/13 31 in 2014 32 in 1980 34 in 1984+
3/14 32 in 2017 34 in 1932 35 in 1937
3/15 27 in 2017 27 in 1932 30 in 1993

 

NYC
 

3/11 28 in 1885 29 in 2017 29 in 1880
3/12 26 in 1900 28 in 1896 29 in 2017
3/13 12 in 1888 27 in 1896 30 in 1880
3/14 28 in 1892 29 in 1896 32 in 2017+
3/15 24 in 1900 26 in 2017

26 in 1932+

 

JFK

 

3/11 29 in 2017 32 in 1969 32 in 1960
3/12 29 in 1984 32 in 2017 32 in 1998
3/13 33 in 1980 34 in 2017 34 in 2014
3/14 35 in 2003 36 in 2017 37 in 1968
3/15 28 in 2017 29 in 1993 35 in 1992

 

LGA

 

3/11 31 in 2017 32 in 1998 32 in 1969+
3/12 28 in 1984 32 in 2017 32 in 1998+
3/13 33 in 2014 33 in 1980 34 in 1984
3/14 34 in 2017 36 in 1972 37 in 1975+
3/15 29 in 1993 30 in 2017 33 in 1992

Really impressive for this time of year. I can almost guarantee the one record that won't ever be broken there is the low max for 3/13 thanks to the blizzard of 1888. I don't think we'll ever have an 11 degree high temp on that date 

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