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January 2020 General Discussions & Observations Thread


Rtd208
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22 minutes ago, bluewave said:

Storm track is very important. Just looking at the DJF temperature departures in NYC doesn’t tell the whole story for snow. March 2017 and January 2019 a great examples of this. But the one common denominator for NYC is that it needs a cold winter to reach 50 inches of snowfall.

NYC winter temperature departures since 2010 and seasonal snowfall.

18-19....+1.2....20.5

17-18....+1.1....40.9

16-17....+4.2....30.2

15-16....+5.9....32.5

14-15....-3.7.....50.3

13-14....-2.2.....57.4

12-13....+1.7....26.1

11-12....+5.4....7.4

10-11....-2.3....61.9

09-10....-1.3.....51.4

thats why I consider 50" the minimum for "historic"

I wonder if 40/40 winters will become more frequent in our new climate or will they still be relegated to the "extremely anomalous" category?  2015-16 was a 40/40 winter at JFK.  It seems like a transitional phase before more warming occurs.

 

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The 12Z ECWMF is increasing the odds for record warmth this weekend, with a broader and drier warm sector around here. There are sizeable trends in the track of the low through the Midwest, with the main frontal forcing for precip now shifted farther N and W of NYC. Low-level flow is more southwesterly, which may allow temperatures to approach 70 Sunday once the front clears.

12Z_Euro.thumb.png.83e96c187c9a7b0f046507bf58e5d0c9.png

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8 minutes ago, purduewx80 said:

The 12Z ECWMF is increasing the odds for record warmth this weekend, with a broader and drier warm sector around here. There are sizeable trends in the track of the low through the Midwest, with the main frontal forcing for precip now shifted farther N and W of NYC. Low-level flow is more southwesterly, which may allow temperatures to approach 70 Sunday once the front clears.

12Z_Euro.thumb.png.83e96c187c9a7b0f046507bf58e5d0c9.png

it doesn't look mixed enough on saturday

ecmwf_full_2020010712_102_40.75--74.25.png

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Still looking like a sick puppy:  

2020010700_054@007_E1_knyc_I_NAEFS@EPSGR

As for snow.  I never try to predict how much snow we are NOT going to get!      But the GFS Cobb Method is 0" and the NAM Cobb is 1.3".      Now do you feel any better?     The next accidental cold shot is near the 17th. it seems.

814analog.off.gif

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8 minutes ago, bluewave said:

No surprise that the SE ridge is correcting stronger this weekend with such an extreme MJO 4-5 event.

New run

9FB21E17-7C14-41A5-A0C0-CD7755FB5C9A.thumb.png.785120d0c7df8922dc01c750392368a3.png

Old run

642C5477-E5B7-452C-9593-C3AE9E8CBE45.thumb.png.dc10ad207731d98b7a44096e5a9aef97.png

I see that system over the weekend is trending drier as the storm track is trending even further west and north of us.  Really more like a summer pattern, not even a spring pattern.  You're going to see thunderstorms all the way into Canada!

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25 minutes ago, bluewave said:

No surprise that the SE ridge is correcting stronger this weekend with such an extreme MJO 4-5 event.

This is the reality that some don't seem to understand. I think any significant change is still weeks away.

We'll see if the MJO will push through. My thoughts are that latter Feb and March probably end up colder than normal similar to past few years. 

There's a nice source region of cold building to our north that should impact us eventually. Marches, like Novembers, have also skewed colder over the past several years.

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20 minutes ago, LibertyBell said:

I see that system over the weekend is trending drier as the storm track is trending even further west and north of us.  Really more like a summer pattern, not even a spring pattern.  You're going to see thunderstorms all the way into Canada!

A near record +5SD jet streak over 200KT along the gradient in SE Canada. 

CBF75611-EDBF-4627-B1DB-38421563F4F9.thumb.png.f3a8783eed947ba20a74eb3e40ade18b.png

 

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3 minutes ago, SnoSki14 said:

This is the reality that some don't seem to understand. I think any significant change is still weeks away.

We'll see if the MJO will push through. My thoughts are that latter Feb and March probably end up colder than normal similar to past few years. 

There's a nice source region of cold building to our north that should impact us eventually. Marches, like Novembers, have also skewed colder over the past several years.

 

The EPS and GEPS say 10/11 +  Where are you seeing " weeks " 

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3 minutes ago, PB-99 said:

 

The EPS and GEPS say 10/11 +  Where are you seeing " weeks " 

the main argument there is whether the models are rushing the pattern change-we've seen before where it ends up being later.   We're still 10 days away, if this gets to day 7 I'm more inclined to jump on board

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Just now, Brian5671 said:

the main argument there is whether the models are rushing the pattern change-we've seen before where it ends up being later.   We're still 10 days away, if this gets to day 7 I'm more inclined to jump on board

 

There`s no argument, the guidance is quicker now.

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1 minute ago, Brian5671 said:

it remains 11 days away...how good has guidance been 11-15 days?   I'd like to see this move up to  day 6-8

 

Huh, the euro is now drilling the trough into the midsection at day 10- not day 12 - not day 15 lol 

 

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