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March 25-26 storm potential


Mitchel Volk

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At the risk of being redundant, there appears to have been an SSW event within the past 10 days; indicating the PV will and/or has spilt. With the lack of a block out ahead of the approaching low, would the PV pressdown to the point of shunting the storm to sea? Or conversly will it enhance the potential storm? Comments are greatly appreciated.  

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I'll ask again, where do people access Euro ensemble individual members and mean? I could never find them on Weatherbell (just the low-res mean with very limited assortment of products) and I'd like to buy another month of some service to get through the last of the winter threats.

 

The links are available right on their home models page.  

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I wouldn't pay attention to the models especially the 18z gfs runs till about Sunday afternoon or so.

? so what should we pay attention too ? practically every post here so far mentions individual models and their runs  directly and or indirectly

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At the risk of being redundant, there appears to have been an SSW event within the past 10 days; indicating the PV will and/or has spilt. With the lack of a block out ahead of the approaching low, would the PV pressdown to the point of shunting the storm to sea? Or conversly will it enhance the potential storm? Comments are greatly appreciated.  

First off....

You can feel the power of our West Coast Ridge Builder

-Right thru your monitor-   ;)

Loop it here:

http://climate.cod.edu/flanis/satellite/hemi/index.php?type=n_pacific-wv-48

 

 

 

 

http://www.opc.ncep.noaa.gov/shtml/P_96hr500bw.gif

 

and this is the WPC 500mb  Day 5 prog

with that idea in mind.....

 

 

http://www.wpc.ncep.noaa.gov/medr/d5500wbg.gif

 

 

E-T-P is a go, from the data that I trust -ATM-

 

 

http://www.esrl.noaa.gov/psd/map/images/ens/prec_f144_us.html

 

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First off....

You can feel the power of our West Coast Ridge Builder right thru your monitor

Loop it here:

http://climate.cod.edu/flanis/satellite/hemi/index.php?type=n_pacific-wv-48

 

 

 

attachicon.gifwcrb.gif

 

http://www.opc.ncep.noaa.gov/shtml/P_96hr500bw.gif

 

and this is the WPC 500mb prog

with that idea in mind.....

 

attachicon.gifd5500wbg.gif

 

http://www.wpc.ncep.noaa.gov/medr/d5500wbg.gif

 

 

E-T-P is a go, from the data that I trust -ATM-

 

That is a sweet look Doorman. I am more or less in agreement with that forecast. That would result in a solid hit for most of the sub forum. Compare the 18z GFS at H500 and you can see the huge implications of a much sharper ridge over the Pacific NW. Now take the 18z GFS and use WPC's 500 mb forecast, and you get a track near the BM. 

 

The GFS is undoubtedly too far south and east with this. It has a habit of suppressing downstream ridges too much, with shortwaves near the gulf. Additionally, I think we all expect to see a PAC ridge much sharper than what the 18z GFS is portraying at day 5, something much closer to WPC's forecast--both of these problems will likely plague the GFS for at least another few days. As such I'd be following the Euro much more closely until the GFS catches up.

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I can't recall one storm where the GFS wasn't SE of other guidance at some point before classic events. The difference between the last event and this one with regards to the GFS is that the GFS wasn't even close to something big before St. Paddy's storm, while today's run have been off shore you can clearly see that it wouldn't take much for the GFS to show a EURO-like solution. 

 

I can't believe it is 3/20 and we're talking about maybe the most powerful winter storm of the year. 

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The potential is there for a big one, but we really will not know until Sunday. If we do get a full phase it would be historic if it somewhat phases like the ECMWF and GEM we get a nice storm, and it does not phase we get little or nothing 18Z GFS. We need a decently sharp ridge out west to get the phasing. The baroclincity and moisture is there big time, the main question is how much phasing will occur.

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I can't recall one storm where the GFS wasn't SE of other guidance at some point before classic events. The difference between the last event and this one with regards to the GFS is that the GFS wasn't even close to something big before St. Paddy's storm, while today's run have been off shore you can clearly see that it wouldn't take much for the GFS to show a EURO-like solution. 

 

I can't believe it is 3/20 and we're talking about maybe the most powerful winter storm of the year. 

 

Yes. The upper level flow right through the Rockies created model chaos, so it was difficult to deduce which model had it "right". This also further complicated which models were succumbing to their normal biases, and which were having trouble resolving the location/orientation of the long wave trough and the embedded shortwave. This case is more of a classic setup, where it's easier to apply the model biases, and the normal model "strengths" and "weaknesses" at this range.

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The potential is there for a big one, but we really will not know until Sunday. If we do get a full phase it would be historic if it somewhat phases like the ECMWF and GEM we get a nice storm, and it does not phase we get little or nothing 18Z GFS. We need a decently sharp ridge out west to get the phasing. The baroclincity and moisture is there big time, the main question is how much phasing will occur.

The GGEM/EURO was nearly a full phase and if that times right, watch out historic would be right. Going to be an interesting weekend for sure! Im encouraged though the EURO is gung-ho for this and its bread and butter is Miller A's
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That is a sweet look Doorman. I am more or less in agreement with that forecast. 

Outstanding reviews from a red tagger?

B)

thank you for that j-ben

 

OPC 96hr  E.C. 

<look in>

 

http://www.opc.ncep.noaa.gov/shtml/A_96hrbw.gif

 

highlighted for clarity

 

 

 

 

 

http://moe.met.fsu.edu/cgi-bin/ecmwf-opertc2.cgi?time=2014032012&field=Sea+Level+Pressure&hour=120hr

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Earlier today in one of the sub forums someone posted a NWS discussion that mentioned the Euro and GFS were keying in on different shortwaves.  One in Siberia and one in the polar area.  This was causing the  different outcomes.  Has anyone heard any more on this.

 

Edit:  Post  #360 by Snow88 from Mt. Holly.

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How come I can only post 5 posts a day. My iq is 141 I'm smart enough to contribute!

Also I really have a good feeling about this storm especially with the cmc and euro being on board. I'd rather see the euro take lead on a classic miller A storm, than GFS any day. GFS seems to do better with Miller B storms though. Wow if the euro control run verifies, come Tuesday night it will feel like Dec 26 2010! Thundersnow anyone?

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How come I can only post 5 posts a day. My iq is 141 I'm smart enough to contribute!

Also I really have a good feeling about this storm especially with the cmc and euro being on board. I'd rather see the euro take lead on a classic miller A storm, than GFS any day. GFS seems to do better with Miller B storms though. Wow if the euro control run verifies, come Tuesday night it will feel like Dec 26 2010! Thundersnow anyone?

PM moderator regarding your 5 PPD. The EURO has almost always had the upper hand on Miller A storms and the GFS has been too progressive. The EURO control hasnt been too bad this season and the ensembles sniffing this out and being consistent is FAR more promising than what the GFS shows right now.

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