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February 2024


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1 hour ago, snowman19 said:

If that Omega Block actually forms, I don’t think it will be in any big rush to leave, they usually are even more stable than Rex Blocks. It may take until mid-February or thereafter to get the potential snowstorm producing pattern in, again, assuming the weeklies are definitely correct

the good news is that when it does break, that's when you get the big event.

in other news, it hit 80 in DC today!

is 80 in DC in January the all time January record for them?

 

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seems like everything is coming together... Pacific jet is retracting and allowing for a strong Aleutian low to form, the NAM in the troposphere remains uncoupled from the stratosphere and favorable, and we should see blocking increase via wave breaking as we head into mid-Feb. MJO will progress slowly into the central Pacific and the western IO, which is highly favorable for Feb Ninos. STJ is open for business alongside an equatorward Pacific jet

looks like we could actually see a pretty similar MJO progression to 2010. also made a pass through 4-6 (although weaker) in mid-late Jan before rotting in phases 7-1. hovmollers also show the MJO progressing nicely

1181520358_image(2).thumb.png.293be7c8adc1a29d6f0adad8901cee26.png992336391_image(3).png.b4796535436fff281c3bb96711d0ebb0.pnggfs_nh-namindex_20240126.png.1d35cbebe74e90dc1a5626783868700b.png

weeklies are also absolutely HONKING. they remind me of Feb 2010, 1978 and 1958, and 2010 has always been a very solid analog for later in the winter... 1958 was discussed as a good analog, too. that year has held up really well with the warm start, Jan blocking, and now a great Feb pattern lasting into early March

2008769784_image(4).thumb.png.1635cd639ec18f26f18c7c1bfa89675d.png734638397_image(5).png.9011f79e1f5ee0a0aa92f2f611ca241b.png

I want to give things another week to simmer and allow for the favorable pattern to get inside 7-10 days on ENS, but I think we might be in for it. the winter cancel stuff earlier this week was ridiculous

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10 minutes ago, brooklynwx99 said:

seems like everything is coming together... Pacific jet is retracting and allowing for a strong Aleutian low to form, the NAM in the troposphere remains uncoupled from the stratosphere and favorable, and we should see blocking increase via wave breaking as we head into mid-December. MJO will progress slowly into the central Pacific and the western IO, which is highly favorable for Feb Ninos. STJ is open for business alongside an equatorward Pacific jet

looks like we could actually see a pretty similar MJO progression to 2010. also made a pass through 4-6 (although weaker) in mid-late Jan before rotting in phases 7-1. hovmollers also show the MJO progressing nicely

1181520358_image(2).thumb.png.293be7c8adc1a29d6f0adad8901cee26.png992336391_image(3).png.b4796535436fff281c3bb96711d0ebb0.pnggfs_nh-namindex_20240126.png.1d35cbebe74e90dc1a5626783868700b.png

weeklies are also absolutely HONKING. they remind me of Feb 2010, 1978 and 1958, and 2010 has always been a very solid analog for later in the winter... 1958 was discussed as a good analog, too. that year has held up really well with the warm start, Jan blocking, and now a great Feb pattern lasting into early March

2008769784_image(4).thumb.png.1635cd639ec18f26f18c7c1bfa89675d.png734638397_image(5).png.9011f79e1f5ee0a0aa92f2f611ca241b.png

I want to give things another week to simmer and allow for the favorable pattern to get inside 7-10 days on ENS, but I think we might be in for it. the winter cancel stuff earlier this week was ridiculous

Nice writeup..... it's worth remembering that if we are going to use 2010 as an analog that although the good pattern started in mid January, the first couple of storms slid under us.  There was a storm in late January which only made it up to Central NJ for any snowfall at all, and of course the Feb 6, 2010 snowmageddon which hit the south shore with 1-2 inches of snow but 50 miles south of us got 2 feet.  So maybe the first couple of storms in this great pattern will miss to our south (depending on how strong the nao blocking is-- in 2010 it was historic).  So if this is the case we wouldn't realize our snowfall dreams until after mid February and that pattern would only last for 3 weeks at most (which is how long it lasted in February 2010 I think?)

I'm not familiar with 1957-58, how long did the good pattern last on the backend that winter (the interval between the first snowfall of the backend pattern and the last?)

 

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1 minute ago, LibertyBell said:

Nice writeup..... it's worth remembering that if we are going to use 2010 as an analog that although the good pattern started in mid January, the first couple of storms slid under us.  There was a storm in late January which only made it up to Central NJ for any snowfall at all, and of course the Feb 6, 2010 snowmageddon which hit the south shore with 1-2 inches of snow but 50 miles south of us got 2 feet.  So maybe the first couple of storms in this great pattern will miss to our south (depending on how strong the nao blocking is-- in 2010 it was historic).  So if this is the case we wouldn't realize our snowfall dreams until after mid February and that pattern would only last for 3 weeks at most (which is how long it lasted in February 2010 I think?)

I'm not familiar with 1957-58, how long did the good pattern last on the backend that winter (the interval between the first snowfall of the pattern and the last?)

 

1958 was more mid-Feb into early March... the timeline itself matches more than 2010

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32 minutes ago, brooklynwx99 said:

seems like everything is coming together... Pacific jet is retracting and allowing for a strong Aleutian low to form, the NAM in the troposphere remains uncoupled from the stratosphere and favorable, and we should see blocking increase via wave breaking as we head into mid-December.

Think you meant mid-February, correct?  Nice write up!

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