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February storm threat discussion


Ellinwood

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  On 2/8/2012 at 4:30 AM, MillzPirate said:

I'm not familiar with this setup in the dc area, but we tend to have some luck from these pop up coastals in nc... Seems the geographic layout of the Delmarva wouldn't be as conducive to snowfall from such a system though

The Delmarva often receives heavy snowfalls that miss us to the east, more so in some seasons than others.

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  On 2/8/2012 at 4:33 AM, MillzPirate said:

I'm not talking abt the gom idea. I mean the secondary that tries to form.

plenty of time but it doesnt look to have a whole lot of upswing potential

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Jeez. Most recent GFS and Euro combo is discouraging. My confidence has taken a sizeable hit.

It seemed logical to believe that a modest winter pattern was in our future but the logic appears inherently flawed at this point. I keep thinking back to some of lwx's and hps's discos through the years. When in a drought it's best to forecast more drought and vice versa.

We've been chasing a good pattern since the beginning of Nov now. I'm an optimist by nature but based on what appears to be a less than favorable 1st half of Feb on tap, it's probably best to ease up on the expectations of having a condensed and productive winter pattern in these parts.

No reason to stop rooting for well timed decent event though. Might not be fun up until or even after such an event but it would still be fun tracking and enjoying it.

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  On 2/8/2012 at 6:14 AM, bhamwx205 said:

Can you elaborate please...

Positive to neutral trough of 528dm swings into VA. If this amplified a little more, it would be a significant East coast snow.

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  On 2/8/2012 at 6:17 AM, MillzPirate said:

Please continue the pbp

The trough ends up going negative over New England. Additional snow falls across MD / VA / DE with an inverted trough in response to the trough.

This is soo close guys.

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  On 2/8/2012 at 6:18 AM, zwyts said:

:o ....I just saw the euro

All this says to me is that it is way too early to suggest this is totaling missing us. That is one helluva trough coming down that partially to fully phases with the southern stream wave.

I would imagine too that whatever happens with this storm will have pretty big repercussions for the next wave next week.

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  On 2/8/2012 at 6:24 AM, bhamwx205 said:

What about the deep south .....nothing im assuming. I saw the story 500mlb map but can't see surface

Could be some light snow across Dixie into the piedmont of NC on this run at a quick glance.

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  On 2/8/2012 at 6:32 AM, yoda said:

Very interesting... HM or Zwyts... is it the EURO close to what the NAM was showing at 84 on its h5 map?

I would say they're not similar and that the ECMWF is better looking at 84h.

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Next week a giant UK Block goes up (not ideal --- located along 20W) with a flat PNA ridge and W-C US trough. All the polar heights retreat so it gets warmer. Looks like a typical La Nina pattern.

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  On 2/8/2012 at 6:39 AM, HM said:

I would say they're not similar and that the ECMWF is better looking at 84h.

Comparing the gfs and the euro..Euro has a more defined piece of southern stream energy, while the gfs pretty much shears it out.

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  On 2/8/2012 at 5:09 AM, Bob Chill said:

Jeez. Most recent GFS and Euro combo is discouraging. My confidence has taken a sizeable hit.

It seemed logical to believe that a modest winter pattern was in our future but the logic appears inherently flawed at this point. I keep thinking back to some of lwx's and hps's discos through the years. When in a drought it's best to forecast more drought and vice versa.

We've been chasing a good pattern since the beginning of Nov now. I'm an optimist by nature but based on what appears to be a less than favorable 1st half of Feb on tap, it's probably best to ease up on the expectations of having a condensed and productive winter pattern in these parts.

No reason to stop rooting for well timed decent event though. Might not be fun up until or even after such an event but it would still be fun tracking and enjoying it.

I think it is logical to continue to chase a modest winter pattern. We seem to be in one right now. It's not brutal cold by any means, but at least we are getting chances for small stuff.

What would be illogical, IMO, would be to put faith in model solutions past about 72-96 hours. The euro especially seems like a pancake lately.

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  On 2/8/2012 at 6:44 AM, HM said:

Next week a giant UK Block goes up (not ideal --- located along 20W) with a flat PNA ridge and W-C US trough. All the polar heights retreat so it gets warmer. Looks like a typical La Nina pattern.

good, that will hopefully put an end to this God awful winter

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The look on the ensembles the last few days haven't been great in the mid and long range. They have been generally setting up the PV around Greenland with the ridging setting up shop off the west coast into the Gulf of Alaska. Looks seasonal to probably slightly above temp wise for our local.

The MJO is argueing otherwise with it going through sectors 8 and 1 with decent amplitude.

http://www.daculaweather.com/mjo_phase_forecast.php

Don't know how much stock I would put into these because the verifications drop off substantially after around day 5 though.

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