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February Forecast Discussion


REDMK6GLI

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I would take the consolation prize of a major ice storm for the area as well. That would be far from boring.

I would take driving heavy rain over an ice storm. Unless you like to lose power and have absolutely terrible driving conditions. Snow or rain for me none of that ice storm stuff for me, no thank you! But like your last post said the ECMWF and GFS have been pretty consistent with making this a cold storm with mostly snow for our area so it looks promising thus far

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The whole forecast hinges on a weak wave overrunning storm like 2-11-94. Anything with more amplitude is going

to have mixing problems here. 1994 was all about a weak storm with no real blocking necessary.

A more wound up system will disappoint like you mentioned.

 

attachicon.gif94.gif

 

attachicon.gif021118.png

 

The Euro and GFS certainly have different evolutions. The GFS likes an energetic piece ejecting in one solid storm filled with a ton of moisture. With the Euro's PV orientation, it helps to favor the development of a coastal system while maintaining cold air drainage in our area.

 

The GFS setup aloft is screaming more of a SWFE in our area.

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The Euro and GFS certainly have different evolutions. The GFS likes an energetic piece ejecting in one solid storm filled with a ton of moisture. With the Euro's PV orientation, it helps to favor the development of a coastal system while maintaining cold air drainage in our area.

 

The GFS setup aloft is screaming more of a SWFE in our area.

 

I think we are going to have to wait until after the weekend storm moves out to see where the baroclinic zone

sets up.

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I would take the consolation prize of a major ice storm for the area as well. That would be far from boring.

Straight ice kind of sucks. A couple tenths looks pretty next day in the gleaming sunlight, but it's about the one ptype I could do without. When was the last time the city proper had significant ice accretion?

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The CFS keeps us on the cold and snowy side of the gradient in February. :snowman:

CFSv2.NaT2m.20140128.201402.gif

CFSv2.NaPrec.20140128.201402.gif

That model has been pretty accurate this winter season as well so that is comforting. One thing though that i still would like to see is atleast a weak or strong enough -NAO to help lock the gradient into a location beneficial for us along the coast and NYC proper

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That model has been pretty accurate this winter season as well so that is comforting. One thing though that i still would like to see is atleast a weak or strong enough -NAO to help lock the gradient into a location beneficial for us along the coast and NYC proper

The -NAO has been almost completely absent and there are no signs of it ever happening, so that's probably a lost cause this winter. Looking at the NAO since December, it's been a lot closer to neutral than I thought, probably averaging slightly positive though it should average more positive going forward.

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That model has been pretty accurate this winter season as well so that is comforting. One thing though that i still would like to see is atleast a weak or strong enough -NAO to help lock the gradient into a location beneficial for us along the coast and NYC proper

 

The block near Alaska that the Euro ensemble mean is showing at day 10 is one of the strongest of the whole

winter so far should it verify that strong. 500 meter anomalies in that region would be among the highest

for February. That is going to build some very strong Arctic highs that slide south with the cross polar

flow from Siberia.

 

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The block near Alaska that the Euro ensemble mean is showing at day 10 is one of the strongest of the whole

winter so far should it verify that strong. 500 meter anomalies in that region would be among the highest

for February. That is going to build some very strong Arctic highs that slide south with the cross polar

flow from Siberia.

 

attachicon.gifEDH101-240.gif

Hopefully that can link to the ridge building from Scandinavia and the high heights can press southward when it counts for us. The -AO is at least a good development.

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The block near Alaska that the Euro ensemble mean is showing at day 10 is one of the strongest of the whole

winter so far should it verify that strong. 500 meter anomalies in that region would be among the highest

for February. That is going to build some very strong Arctic highs that slide south with the cross polar

flow from Siberia.

EDH101-240.gif

So looks like cold may not be a problem but still feel uncomfortable in a gradient pattern with atleast no weak blocking. Everything else seems to be lining up for us otherwise

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Hopefully that can link to the ridge building from Scandinavia and the high heights can press southward when it counts for us. The -AO is at least a good development.

 

All the long range guidance including the CFS keeps us cold with an extension of the Pacific block east toward NW Greenland

with a +NAO.

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So looks like cold may not be a problem but still feel uncomfortable in a gradient pattern with atleast no weak blocking. Everything else seems to be lining up for us otherwise

 

We need to have weak systems here with plenty of overrunning like we saw 2-8 to 2-11-94

all on the low level Arctic air with no help from the NAO and a strong SE Ridge. But we don't want

a wrapped up system that will cut and cause mix precip issues here.

 

 

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