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First weekend of Feb storm


Ian

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Now if the Euro does not look to bad in about 50 minutes then maybe we can squeeze a little snow out of this.

12z was a bit better than 0z... the gfs has really de-emphasized that northern vort the last few runs (12, 18, 0z). still got a bit to go tho. even then it could be marginal.

post-1615-0-30101000-1296710281.gif

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Yuck.

So is it GGEM/GFS/EURO vs NAM/SREF??

EURO warm at surface, but it always is anyway. NAM looks pathetic, I tend to worry when the SREF & NAM agree.

Nam after 48 hours gets a little iffy on whether you want to trust it or not. As far as the SREF I am kind of Blah when it comes to trusting it in the longer range. That said, the other models aren't looking much better when it comes to snow with probably the GFS leading the way with what looks like it may be some half decent back end snow. I did have hopes up my way in Hanover, PA of seeing a semi decent snow event even though areas south of me would probably be mostly rain. The way it is looking at this point though I will be very lucky if I see an inch of slop.

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06Z GFS looks better with the 500's with it swinging the trough through the MD area. It also shows a decent slug of back end snow. Not an expert on Norlun features but have to wonder if that is what it is showing with a band of .25-.5 just north and west of DC, Baltimore corridor when the 850's look good for snow. Does have .1 to .25 of precip around 95 but think that would be a rain to snow situation.

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6Z GFS is still far out to nail the sfc temp profile, bit it looks like ice/rain to snow?

Don't take much stock in the off runs of the GFS so I really don't look to hard at the temp profiles. Think the 12Z and especially tonight's 00Z will give us a better idea on where we stand. NAM is also getting into it's 48 hour range and I feel has a better handle on temp profiles then the GFS so the next couple of runs will be telling as well.

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Anybody got the 6z ensembles?

They're on Ewall. All of them have the 850 0C contour to our north/west when the precip arrives, but several of them do bring it back south far enough to end as snow for most of us...definitely those north of I-95. Some of those members also still have a fair amount of precip over us when that happens.

Some of the GFS members have a monster of a storm next week for the Ian's B-day threat.

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They're on Ewall. All of them have the 850 0C contour to our north/west when the precip arrives, but several of them do bring it back south far enough to end as snow for most of us...definitely those north of I-95. Some of those members also still have a fair amount of precip over us when that happens.

Some of the GFS members have a monster of a storm next week for the Ian's B-day threat.

The mean looks better then the individual members that's for sure.

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The mean looks better then the individual members that's for sure.

The 00z ensemble mean looked very nice some accumulating snow on the backside of the storm this weekend (always suspicious of that, however). 06z mean has a similar temp drop, but less precip on the tail end.

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The 00z ensemble mean looked very nice some accumulating snow on the backside of the storm this weekend (always suspicious of that, however). 06z mean has a similar temp drop, but less precip on the tail end.

The GFS Op has been advertising backend snow with what looks to be a norlun feature, maybe? I would think the chances are greater if that were the case but you never know exactly where that will set up. I am with you as far as general back end snow though. Doesn't matter what the models show it just never seems to occur.

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The 00z ensemble mean looked very nice some accumulating snow on the backside of the storm this weekend (always suspicious of that, however). 06z mean has a similar temp drop, but less precip on the tail end.

The only way that happens is for the vort to get a couple of degrees south of us when it comes east. The gfs has been trending south and the 06Z version would end as a period of snow at least for those west and north of the city. The Nam would dry slot us.

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The only way that happens is for the vort to get a couple of degrees south of us when it comes east. The gfs has been trending south and the 06Z version would end as a period of snow at least for those west and north of the city. The Nam would dry slot us.

Not to trust the NAM simulated radar at hr 60 or anything but it does bring precip back into the area after we have been dry slotted and after 850's would support snow north and west of the cities.

http://www.nco.ncep....am_ref_060s.gif

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Not sure...:unsure:

just trace out where it's put the 500 vort in our neck the last few runs to where it is at 12z. the gfs is still not that great tho maybe 12z will be another step better.

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just trace out where it's put the 500 vort in our neck the last few runs to where it is at 12z. the gfs is still not that great tho maybe 12z will be another step better.

Yeah I noticed what appeared to be a slight 500 vort improvement on the 12z nam. It seemed slightly south of it's previous runs. Am I wrong to think that if the 500 vort were to come just south of us we would have a better chance of a little wraparound?

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just trace out where it's put the 500 vort in our neck the last few runs to where it is at 12z. the gfs is still not that great tho maybe 12z will be another step better.

Thank you sir

As between me and Ian, to be clear, side with Ian (duh, I know). I am interested in what he has to say, and will be subscribing to his newsletter...

Ian? Newsletter? Where can I sign up?

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