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Significant Ocean Storm March 5-7 2013 Discussion Part II


earthlight

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It's been ticking south and east at H5 each run. Surface is slowly responding to that.

Let me guess-it has a big convective blob develop east of NC and pull east, causing the precip up here to shear out to nothing, and then there's the insane maxes near DC and BOS. Not saying it's entirely wrong but it's had this problem before.

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GFS really needs to be fixed... 24 hours ago it was showing a bomb now 24 later it has us getting 2-4 inches if that.... EURO at 1 will be tell tale I think if it comes north more to match the ensembles and control run this event will produce.  But as of right now I wouldnt expect more than 3-6 inches will room for up or down.

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Full phase with that northern S/W this run but occurs late so that it hits DC then skips over us and hits Boston as the phase tugs the low back NW at the last minute

 

Exactly what one of my main worries is and I even saw some signs of it on the NAM. This is a plausible scenario-that the storm essentially skips over us after nailing DC and then nails Boston.

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I wrote sunday nite here when the GFS advertised this at 0z Sunday nite , it weakened it SE once off the MA coast , and then

bombed in back out over NE

The jump threat was there since then , not saying its correct , but the 0z EURO control run does this to some extend too this morning

only the NAM ans SREF paste the area .

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but honestly the EURO overnight was too bad... still wouldnt of been a moderate snowfall for most... was very cold as well

The Euro did trend north last night by a good margin, but never showed a major hit here for many days now. Now the GFS and all the models are trending south. If these solutions are correct I have to give the Euro the most credibility. We will see at 1pm what it shows.

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Exactly what one of my main worries is and I even saw some signs of it on the NAM. This is a plausible scenario-that the storm essentially skips over us after nailing DC and then nails Boston.

The storm doesn't "jump" over us. The storm track takes the initial shot of precip to our south. Then as the storm comes north a bit the precip wraps back in and nails us. That's what will bring the goods. If we have to just rely on the initial shot of precip moving by to the south it's not going to be a good end result. It was encouraging to see that the NAM/SREF's held serve and that the Euro has trended more towards the NCEP models the last two runs. I agree, it's a forecasting nightmare. Three completely seperate camps here 24-36 hours out. I think if you're the NWS you need watches for a good portion of the area.

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The Euro did trend north last night by a good margin, but never showed a major hit here for many days now. Now the GFS and all the models are trending south. If these solutions are correct I have to give the Euro the most credibility. We will see at 1pm what it shows.

 

fully agree... if the NAM,SREFS and EURO (becomes on our side) i would say that 3-6 to 4-8 is a good bet for the area.  The GFS is always the last to realize what the hell is going on from having to losing to having it; it really is ridiculous. I guess we will see @ 1-1:15pm.

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Euro did have a couple of inches, and did come North like 300 miles in 48hrs, But GFS wow! Way to go with being inconsistent. She did this with NE Blizzard as well.

Crazy thing is that the GFS WAS VERY consistent ! Then all of a sudden said...."um cancel that" lol

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The storm doesn't "jump" over us. The storm track takes the initial shot of precip to our south. Then as the storm comes north a bit the precip wraps back in and nails us. That's what will bring the goods. If we have to just rely on the initial shot of precip moving by to the south it's not going to be a good end result. It was encouraging to see that the NAM/SREF's held serve and that the Euro has trended more towards the NCEP models the last two runs. I agree, it's a forecasting nightmare. Three completely seperate camps here 24-36 hours out. I think if you're the NWS you need watches for a good portion of the area.

You're right-the better term is that it goes around us, due to the 500mb low continuing to trend south, and then the phasing in of northern stream energy enhances the precip for New England. I doubt it's as extreme as the GFS is trying to paint it but IMO it happens to some extent. We need the 500mb low to stay north.

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It just amazes me how inaccurate the models are within 1 to 2 days of a storm. Like shouldn't they be far more technologically advanced than this.

The Euro is actually looking pretty good once again.

We see this all the time. It's usually the other way around where the Euro is showing a good storm and the GFS is still lost 36 hours out. This time it was the reverse. I think it's way too early to be claiming which model had the best idea. So far the NAM/SREF's have been the only really consistent models.

 

The fact that yesterday the GEFS were 12/12 I think led everyone to believe that the GFS was on to something. This would be a huge defeat for NCEP if this ends up being a non-event.

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fully agree... if the NAM,SREFS and EURO (becomes on our side) i would say that 3-6 to 4-8 is a good bet for the area.  The GFS is always the last to realize what the hell is going on from having to losing to having it; it really is ridiculous. I guess we will see @ 1-1:15pm.

 

that is right - it is now realizing that its idea of a closer to the coast scenario was wrong and its correcting itself. The euro had the "right-ish" idea all along...its a scapper...and because of that most will not get an accumulating snow (if the GFS has finally caught on)

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