Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

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Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by sroc4 on Sun Mar 11, 2018 7:46 am

Without question this sucka is gaining momentum. And the NW trends are real. When looking at the globals the GFS I believe is actually leading the way ovr the Euro. Lets quickly look at H 5 and compare the subtle, yet very important differences that will either pull the surface low track on or just SE of the 70/40 BM or keep the track further S&E of the BM.

There are two troughs to pay attention to. 1) the steering trough dropping in from the north, and 2) the main trough that is generation our storm system to the south. How it plays out will be about main trough axis orientation, (when and where), relative to the steering trough position.

Lets take a look at the Euro vs the GFS valid 00z March 13th. Notice we are under 48hrs yet there are these subtle yet vitally important differences still. Notice in the first images, the Euro, the main trough orientation is still positively tilted, and the take notice where the steering trough is positioned. The result of a more positively tilted trough at this position, and a steering trough a tad to far south is a storm track that is more NE and well S&E of the BM.





However; on the GFS, the main trough axis is already tilted to neutral because the steering trough is a tad further N allowing for heights to increase faster out ahead of the main trough axis. The result is higher heights means a strom track oriented more N to NNE and a track closer to the BM.




So which one is right? Well for now if you look at some of the hi res short range models, ie: the RGEM and 1k/3k NAM, they both agree with the GFS on main track orientation relative to the steering trough by 00z March 13th






The Euro seems to be playing catchup with the NW trend. More than likely its the improved trend of the +PNA ridge in the west that has allowed for the delay in the arrival of the N energy/steering rough such that we can raise heights appropriately along the coast to bring the LP up. Watch the hi res models today and tonight for changes to the Main trough axis and position relative to the steering trough position. Another thing to watch is when the Main trough actually closes off. The 3K NAM closes it off near the Va/NC coast which tilts the main trough axis negative sooner causing a phase with the steering trough sooner and a much more potent storm and track even further N&W. The 12k NAM closes off H5 of the Main trough much later so the trough axis tilts neg later so the storm track is a tad further S&E relative to the 3K.

I fully expect further shifts N&W to the storm track today and tonight on the models. How far though?

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by billg315 on Sun Mar 11, 2018 8:24 am

Excellent write up Scott. As I said in the other thread, I think those who have somewhat realistic expectations about this event could be very happy. 3 days ago some models had this OTS off the Carolinas without us getting a flake, now it’s being called a “miss” by some if the models show us getting 1-3”. That tells you how far this has progressed. Lol
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by oldtimer on Sun Mar 11, 2018 8:26 am

NWS Has already posted WSW for New England You think they are leading more toward the Euro?

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by cooladi on Sun Mar 11, 2018 8:28 am

Excellent analysis as always! Just wish those models would get with the program, whatever it is, a whole lot quicker...

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by SNOW MAN on Sun Mar 11, 2018 8:28 am

Thank you for your reply billg. Hopefully I'll get some snow out of this.
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by billg315 on Sun Mar 11, 2018 8:33 am

My sense with this is that it has been steadily trending N&W. This makes sense to me because of the overall pattern and because I think storms often tend to follow the trail blazed for them by prior storms (in a metaphorical sense). Once a certain storm track sets up, it often becomes the preferred track. The last two storms tracked close to the coast - not OTS so I would usually expect this to follow suit without a major intervening pattern change. Also the models have had a pretty consistent N&W trend this winter, so that also makes sense. I’m still not sure (at THIS moment) it gets close enough to give us a huge hit (though that is very much possible) but I do think everyone sees some accumulating snows (hence why realistic expectations are important to happiness here).
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by skinsfan1177 on Sun Mar 11, 2018 8:40 am

Wow some big hitters in hete
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by sroc4 on Sun Mar 11, 2018 8:40 am

Crap I did lock the wrong thread by mistake. Thanks Janet

_________________
"Go hug a human, not a weather model"
“Optimism is great, but cautious optimism is more realistic”
WINTER 2012/2013 SNOW TOTALS 43.65"
WINTER 2013/2014 SNOW TOTALS 64.85"
WINTER 2014/2015 SNOW TOTALS 71.20"
WINTER 2015/2016 SNOW TOTALS  35.00"
WINTER 2016/2017 SNOW TOTALS 42.25"
WINTER 2017/2018 SNOW TOTALS 62.85"
Dec 09th 2.75" (prev year's first snowfall Dec 11th coating)
Dec 14th 2.5"
Dec 15th 2.8"
Dec 30th 2.0"
Jan 4th 12"
Jan 29th-30th* 7.8"
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by Dtone on Sun Mar 11, 2018 8:45 am

Whoa what is going on. I left.to DC early Fri and havent been following since, this has becomea likely threat wow. I thought i might of had a better chance here.

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by billg315 on Sun Mar 11, 2018 8:45 am

Also note, this is a nighttime storm. Overnight temps have been below freeezing since Wed and will get to or below freezing Monday night. There will be NO sun issues, so what falls should (mostly) stick (unlike both of the prior storms where a lot of the falling snow wasn’t sticking cutting down on overall totals).
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by rb924119 on Sun Mar 11, 2018 9:27 am

FIVE LETTERS: S.R.E.F.S.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by Frank_Wx on Sun Mar 11, 2018 9:31 am

SREFS


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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by nutleyblizzard on Sun Mar 11, 2018 9:57 am

Frank_Wx wrote:SREFS

Wow what a jump west! You would think the NAM is going to comply shortly.
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by gigs68 on Sun Mar 11, 2018 10:00 am

rb924119 wrote:FIVE LETTERS: S.R.E.F.S.!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3 <3

What is the <3?
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by SENJsnowman on Sun Mar 11, 2018 10:02 am

A makeshift 'heart emoji' I believe...?

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by gigs68 on Sun Mar 11, 2018 10:03 am

SENJsnowman wrote:A makeshift 'heart emoji' I believe...?

Thanks I see it now
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by rb924119 on Sun Mar 11, 2018 10:04 am

I THINK THE NAM BOUTTA CALL THE SREFS AND RAISE THEM I THINK OMGGGGGGG!!!!!!!!!!!! H5 LOOKS RIDICULOUS!!!!!

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by nutleyblizzard on Sun Mar 11, 2018 10:08 am

Shortwave is really amped. Looks like more northern/southern stream interaction going on earlier too.
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by rb924119 on Sun Mar 11, 2018 10:12 am

OH. MY. GOD. NAM IS GOING NUCLEAR HERE GOOD LORD I MUST BE IN HEAVEN!!!

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by nutleyblizzard on Sun Mar 11, 2018 10:16 am

Trough much better aligned this run. 990 mb off the NC coast already!!!
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by Carter bk on Sun Mar 11, 2018 10:23 am

This is the last one for the season guys honestly. Unless u get a perfect storm in late march or aoril which is unlikely bring her home

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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by syosnow94 on Sun Mar 11, 2018 10:24 am

TWC gives NYC metro 2-4” and Long Island 4-8” More east less west in both cases.

NWS HAS NYC metro and Long Island 3-8”. Less west

Thoughts. Still 34 hours to go. I’ll have a map out this evening after the 12z runs are all done and analyzed. I say this afternoon at 4pm if trends hold the NWS will host advisories from the NYC metro west and watches east.
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by weatherwatchermom on Sun Mar 11, 2018 10:30 am

Rb you posted 25min ago....and left us hanging affraid affraid
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by syosnow94 on Sun Mar 11, 2018 10:32 am

He’s doing it on purpose mom. Hopefully he saw the NAM and passed out
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

Post by mikeypizano on Sun Mar 11, 2018 10:33 am

weatherwatchermom wrote:Rb you posted 25min ago....and left us hanging affraid affraid

He always does...
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Re: Tracking Another Possible Godzilla Mon-Tues, March 12th-13th

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