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February 2021


snowman19
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The coming pattern is a great example of we need extreme blocking these days to get really cold around here. This will be one of the strongest west based blocks at 500 mb that we have seen during the month of February.  Models have  a 5.5 SD west based block in the coming days.

DB181697-9A17-4FAF-8B21-9C30C4583C69.png.cf1dd3be5acdaffdd7eea79e97296e32.png
280E0697-0058-4C46-BB19-E86D70B41D68.thumb.jpeg.b31d7cfcce8ab4f1be07a318a5358cae.jpeg

 

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Morning thoughts...

Today will be mostly cloudy and cool. Some areas could still experience a snow flurries or snow showers. Clouds could begin to break during the day. Temperatures will likely top out in the upper 30s in most of the region. Likely high temperatures around the region include:

New York City (Central Park): 35°

Newark: 36°

Philadelphia: 36°

Tomorrow will be mostly sunny and a bit milder. In the extended range, there remains a possibility that another storm could impact the region late in the weekend or early next week, though the spread among EPS members has widened since the 2/2 12z cycle.

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53 minutes ago, EasternLI said:

Wild guess, but looking at some stuff this morning. Window for a big one 15th - 18th timeframe. JMO. 

We saw s SE jackpot shift from the12-17 event to the recent one on 1-31 to 2-2. BGM was the epicenter on 12-17 and that moved over to Northern NJ with the recent storm. The blocking was weaker in December so this allowed the low to tuck in over Southern NJ. The blocking intensified this past weekend and the low tucked in a little further east of ACY. Now with the strongest blocking of the whole season and years coming up, maybe the storm track will shift more SE toward the BM. So perhaps at some point this month ,we get the maximum snowfall totals from a KU setting up on Long Island to Southern New England.

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1 hour ago, bluewave said:

We saw s SE jackpot shift from the12-17 event to the recent one on 1-31 to 2-2. BGM was the epicenter on 12-17 and that moved over to Northern NJ with the recent storm. The blocking was weaker in December so this allowed the low to tuck in over Southern NJ. The blocking intensified this past weekend and the low tucked in a little further east of ACY. Now with the strongest blocking of the whole season and years coming up, maybe the storm track will shift more SE toward the BM. So perhaps at some point this month ,we get the maximum snowfall totals from a KU setting up on Long Island to Southern New England.

What do you think the odds are for another KU event?

I'm guessing pretty good though the PNA isn't great. 

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1 hour ago, bluewave said:

We saw s SE jackpot shift from the12-17 event to the recent one on 1-31 to 2-2. BGM was the epicenter on 12-17 and that moved over to Northern NJ with the recent storm. The blocking was weaker in December so this allowed the low to tuck in over Southern NJ. The blocking intensified this past weekend and the low tucked in a little further east of ACY. Now with the strongest blocking of the whole season and years coming up, maybe the storm track will shift more SE toward the BM. So perhaps at some point this month ,we get the maximum snowfall totals from a KU setting up on Long Island to Southern New England.

Or hitting the Mid-Atlantic with 2 feet of snow while giving NYC some cirrus clouds and flurries.

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3 minutes ago, SnoSki14 said:

Ain't happening. Big dip in the AO/NAO coming up. 

Models will flip back. 

You can absolutely have a strong SE ridge along with a -NAO and -AO. It’s totally false, total bunk that a SE Ridge can’t co-exist along with a -NAO and -AO. It’s a fairy tale wishcast that the weenies spread on twitter, they need to start it with “Once upon a time, it’s impossible to have a SE Ridge and a -NAO”

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1 minute ago, snowman19 said:

You can absolutely have a strong SE ridge along with a -NAO and -AO. It’s totally false, total bunk that a SE Ridge can’t co-exist along with a -NAO and -AO. It’s a fairy tale wishcast that the weenies spread on twitter, they need to start it with “Once upon a time, it’s impossible to have a SE Ridge and a -NAO”

Not when it's as strong as depicted. 

The storm will likely turn into a SWFE or Miller B. 

We just saw how what was supposed to be a huge ridge post Mondays storm got turned into a frontal passage and that's without a big Greenland block. 

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30 minutes ago, SnoSki14 said:

Not when it's as strong as depicted. 

The storm will likely turn into a SWFE or Miller B. 

We just saw how what was supposed to be a huge ridge post Mondays storm got turned into a frontal passage and that's without a big Greenland block. 

The models have been falling the last week or two going too strong on any SE ridging beyond day 4-5.   Just 5 days ago models had highs in the 60s and 70s tomorrow across the SE US in SC NC GA and now they’ll be lucky to crack 55.  

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The CPC GEFS AO forecast is correcting more negative with the extreme 500 mb blocking pattern. Looks like a -4 to -5 SD drop coming up. We have a nice track record for snowstorms following winter AO drops of this magnitude in the past. But as always, how soon the biggest storm arrives following these big AO drops can be quite variable. 

5CF1038E-9007-476F-B605-7F1B688802EE.thumb.gif.e125cf545753764eb8315d7488094f14.gif

 

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14 minutes ago, bluewave said:

The CPC GEFS AO forecast is correcting more negative with the extreme 500 mb blocking pattern. Looks like a -4 to -5 SD drop coming up. We have a nice track record for snowstorms following winter AO drops of this magnitude in the past. But as always, how soon the biggest storm arrives following these big AO drops can be quite variable. 

5CF1038E-9007-476F-B605-7F1B688802EE.thumb.gif.e125cf545753764eb8315d7488094f14.gif

 

Eps shows a Miller b next weekend

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Been hyping it, but IMO it’s after the block is done retrograding and low heights head into 50/50 region that I think a big event is possible. Look at the end of the euro run. Elongated tpv with HP behind it. PNA ridge building, if any wave in between there is strong enough it would be perfect

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1 minute ago, MJO812 said:

Eps shows a Miller b next weekend

Problem is the Tpv is west of lakes this will make it tough for any low to track south of NYC.  Think the gradient will be very close to NYC though  but I’d favor SNE and NNE right now. Looks more like a SWFE to me. HP is not in an idea location because of the ULL positioning.

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Only the 4th time since 2010 that NYC went 40 days without reaching 55°.

Number of Consecutive Days Max Temperature < 55 
for NY CITY CENTRAL PARK, NY
Click column heading to sort ascending, click again to sort descending.
Rank
Run Length
Ending Date
Period of record: 2010-01-01 to 2021-02-02
1 65 2015-03-10
2 63 2011-02-13
3 40 2010-03-06
- 40 2021-02-03
4 33 2014-03-07
5 28 2018-03-29
6 26 2019-03-13
7 24 2010-01-24
8 23 2018-01-11
- 23 2013-01-13

 


 

 

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