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February 8-12 model discussion


Rankin5150

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He has a point, gfs suggests a changeover to rain or freezing rain for central/eastern nc. Folks should not worry so much about those types of precise details though. The main thing to worry about is if it trends north. Hopefully the eastern canadian low will be a bit more south than this run shows to prevent it.

I agree...we have a long ways to go w/ this one and a lot of model runs to go through. I'm just excited that we have a storm to track!

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He has a point, gfs suggests a changeover to rain or freezing rain for central/eastern nc. Folks should not worry so much about those types of precise details though. The main thing to worry about is if it trends north. Hopefully the eastern canadian low will be a bit more south than this run shows to prevent it.

What I put in bold is the biggest fear right now. However we can probably bet the Euro holds suite with it's more southern solution. I have a hard time believing the GFS verifies just cause it looks too good to be true.

I guess half of NC wins half doesn't...which doesn't mean a nightmare for the Carolinas...I guess that's what I was wondering about.

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The system is still a long ways out. Not to be a debbie downer, but it's only one of many model runs that will lead up to this possible storm. Remember, a couple of weeks ago, when the Euro produced a 1993 type storm days in advance and all we got was rain? Don't get too excited about this one because it might all change to rain like the last system did, if it slows down.

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I can't post my soundings as I'm mobile and apparently can't cut and paste from Plymouth but suffice to say the soundings arent even close to being anything but all snow from Charlotte west at the very least.

That would easily be close to 2 feet...can't wait to see the snow maps for the porn value.

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Yep but that's irrelevant at this point. No way am I going to worry about a 50 mile range at day 6/7. The potential is huge is the main point.

Lookout,

I was directly responding to the poster who said "12z verbatim is an 85 special.... ATL to CLT north gets slammed" and I was basically saying ATL does NOT get slammed verbatim (except with a cold rain). My snow accumulation maps have very little accum., if any, for ATL-AHN. I didn't want that to remain in the archives here without a correction. As you know, other than in very rare situations, ATL-AHN will not get slammed by snow on the frontend with a sfc low that tracks over MCN as that is quite a bit too far north. For a good snowstorm (like the last two), I know that you know that a classic true Miller A track across the northern GOM and then over SE GA or further south is the best bet for big ATL-AHN snows.

OTOH, I agree that there is huge potential for a sig. snowstorm for a portion of the SE US and have been feeling that way for a couple of days with the three straight Euro snowstorm runs. This run and the 6Z gfs run just add to the idea that there's a decent chance at one for a portion of the SE US around 2/9-10. Of course, it is way too early to get too excited as it can still turn out to be nada. Then again, climo is on our side.

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Why did you change my quote? Were you happy with January?

I just think that it's unreasonable to become cynical when every fantasy storm doesn't pan out. Look, I didn't see as much as you on Christmas. Due to how much I love the weather, though, I've actually had a lot of fun tracking the recent Yankee blizzards. Would I love to see more snow? Absolutely. Just not sure people should be griping about marginal temps in RDU on a GFS run a week out.

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Lookout,

I was directly responding to the poster who said "12z verbatim is an 85 special.... ATL to CLT north gets slammed" and I was basically saying ATL does NOT get slammed verbatim (except with a cold rain). My snow accumulation maps have very little accum., if any, for ATL-AHN. I didn't want that to remain in the archives here without a correction. As you know, other than in very rare situations, ATL-AHN will not get slammed by snow on the frontend with a sfc low that tracks over MCN as that is quite a bit too far north. For a good snowstorm (like the last two), I know that you know that a classic true Miller A track across the northern GOM and then over SE GA or further south is the best bet for big ATL-AHN snows.

OTOH, I agree that there is huge potential for a sig. snowstorm for a portion of the SE US and have been feeling that way for a couple of days with the three straight Euro snowstorm runs. This run and the 6Z gfs run just add to the idea that there's a decent chance at one for a portion of the SE US around 2/9-10. Of course, it is way too early to get too excited as it can still turn out to be nada. Then again, climo is on our side.

Larry, I've been thinking about this and you are right about needing a further south track for a good storm. However, in order to get an epic dumping (1993) wouldn't we need a monster storm coming further north than the ideal track? That would put us closer to the heavy precip and the power of the storm would pull in the colder air. I know it's threading the needle. Before anyone jumps on me for saying the 1993 word I am in no way comparing this storm to that one. I'm just discussing storm tracks.

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It is good that the GFS now looks similar in general to the GGEm and ECMWF in showing a storm.

Synoptically, most models have a strong vortex in eastern Canada next week, which argues for a supressed track that would say take the system across the Gulf coast to N Fl or S GA and then off shore and northeast out to sea. I personally think the GFS is likely too amplified and thus too far north/west but with the system 6-7 days out wobbles north and south in the track will happen and should not suprise us.

If the models are wrong and the eastern Canada PV is weaker, further north or west, then the further north/west track could certainly happen even further north and west.

However as of now, putting my snow weenie goggles on, I like how this looks for RDU 6-7 days out. Of course it is 6-7 days out.

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Lookout,

I was directly responding to the poster who said "12z verbatim is an 85 special.... ATL to CLT north gets slammed" and I was basically saying ATL does NOT get slammed verbatim (except with a cold rain). My snow accumulation maps have very little accum., if any, for ATL-AHN. I didn't want that to remain in the archives here without a correction. As you know, other than in very rare situations, ATL-AHN will not get slammed by snow on the frontend with a sfc low that tracks over MCN as that is quite a bit too far north. For a good snowstorm (like the last two), I know that you know that a classic true Miller A track across the northern GOM and then over SE GA or further south is the best bet for big ATL-AHN snows.

OTOH, I agree that there is huge potential for a sig. snowstorm for a portion of the SE US and have been feeling that way for a couple of days with the three straight Euro snowstorm runs. This run and the 6Z gfs run just add to the idea that there's a decent chance at one for a portion of the SE US around 2/9-10. Of course, it is way too early to get too excited as it can still turn out to be nada. Then again, climo is on our side.

I know what you mean, it wasn't meant as a rebuttal..was just making a general comment ;) I agree with everything you say here, literally it's not although it's very very close..verbatim gainesville is all snow.

Although such a track is not favorable for north ga snow most of the time, the very cold airmass ahead of it combined with even colder air north and west of it suggests a rare instance where the cold is actually just a few miles behind the main low..similar to what you see in the plains. What I like seeing though is all models showing a storm..that is what is important. My biggest fear though is this trends more north.

New 12z canadian looks similar to the gfs at hour 144. But it's hard to tell with those crummy maps. One noticable difference, it has a 1039mb high over the ohio valley vs a 1030ish on the gfs. Not surprising given the ggem's tendency to overdo highs but if that high trends stronger, colder low levels are a possibility.

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Larry, I've been thinking about this and you are right about needing a further south track for a good storm. However, in order to get an epic dumping (1993) wouldn't we need a monster storm coming further north than the ideal track? That would put us closer to the heavy precip and the power of the storm would pull in the colder air. I know it's threading the needle. Before anyone jumps on me for saying the 1993 word I am in no way comparing this storm to that one. I'm just discussing storm tracks.

No, not at all. ATL (the city itself) got epic dumps of 7-10" of snow from storms in 12/1886, 1/1893, 12/1896, 1/1904, 1/1936, 1/1940, and 3/1983 and epic dumps of 3-4" of IP (keep in mind that 3-4" of IP is equivalent to ~9-12" of snow) from storms in 1/1884, 12/1917, 2/1979 and 1/1988. ALL of these were from Miller A storm tracks quite a bit further south than the 12Z gfs (all crossed either SE GA or north or central FL) and gave ATL-AHN in the very general vicinity of 1" of liquid equivalent. 3/1993 was much more the exception. Since the late 1800's, I can't find even one epic dump in the city, itself, that didn't have an associated track across either SE GA or N/C FL unless you want to count 3/1993 (which may not quite count as epic dump for city, itself..it is close..and it definitely didn't count as epic for KATL)..even if it did count, the track was still ~100 miles SE of the 12z gfs' MCN track. So, that's 11 epic dumps (about once every 12 years) and 11 similar Miller A tracks excluding 1993.

Maps from here:

http://docs.lib.noaa...ather_maps.html

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