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Feb. 8-12 Model Discussion Part III


beanskip

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btw, euro showing between 0.25 and 0.50 on the nc coast. The 0.50 contour is right on the coast so probably around 0.35 most areas in eastern nc?

Eastern NC is going to have some BL issues this run, same as last but QPF has increased 4-5 fold. Surface temps never go below 0C, and 850's make a run for above freezing, maxing out at -0.5C before the heavier precip moves in. HAT is just under 1/2", with changeover there around 12z Thurs and maybe 2/10" as SN, ILM may also see a changeover around that time with likely under 1/10" as SN. FAY looks like all SN with 0.25", but as mentioned, surface temps are an issues, which would cut down on accum, likely as 32 and SN under anything heavy, going to 33-34 in lighter stuff. RDU is 0.12" all SN but again, surface temp issues. RWI is 0.20" likely all SN and PGV is 0.29" all SN. Only concern is surface temps with none of these stations below freezing for the event, at-least per the Euro at 6hr steps .

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I feel like we are starting to trend back to some earlier solutions made by the medium range models with the short term models (RPM, RGEM) picking up on wetter solutions especially west of Atlanta. Very interesting that we've seen this pattern happen a few times this winter where the models will lose a storm only to bring it back. Lots left to work out though for the Carolinas.

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It will be interesting to see what NWS P.City does. Will it be a WSW, WWA, or special weather statement? Afternoon package will tell. I would have to bet on the special being the choice based on past events. I would go with WSW basically south ATL metro all the way North

Because the GFS is skimpy, I bet they hold off on any advisories/warnings. Also, will they continue the weaselly wording of "snow OR rain OR sleet."

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Because the GFS is skimpy, I bet they hold off on any advisories/warnings. Also, will they continue the weaselly wording of "snow OR rain OR sleet."

:lol: Good one. Although we do want a later start as surface/near surface temps might be an issue briefly at the start. So I guess they could technically be right as there might be a brief period of rain/sleetf/snow to start but evaporational cooling would quickly change it over to snow.

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Because the GFS is skimpy, I bet they hold off on any advisories/warnings. Also, will they continue the weaselly wording of "snow OR rain OR sleet."

LOL!!!! Weaselly is the word! They ride the fence on so many events it's just pitiful. I'd be much more OK with them being wrong than not "being" at all.

C'mon man!

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Note quite... I'm implying that while we didn't see the more extreme solution that the RUC had, the models are still trending towards the RUC because even after being less amplified in verification, its still was more amplified than any of the model guidance.

If anything, this just reminds me of the February 12th, 2010 event last year. The setup is pretty different, but pretty much all the guidance lost the storm (The GFS infamously sent the low to Cuba). However, the last 24 hours saw a major trend northward with the system and also revealed an inverted trough that ended up producing much of the snow that occurred on the north end of the storm, despite the 850mb low being much further south over South Georgia and South Carolina. I think we are going to see another inverted trough that will have a notch of higher precipitation further north into TN and NC... however at some point this feature will transfer to the coastal low and skip over or speed over certain regions. Unfortunately the midlands of NC/SC look like a prime target for this occur as the energy transfer occurs. However, if the models continue to trend stronger with the s/w, it will also draw the coastal low further west, and the energy transfer will be more seamless, with less of a hole of precipitation in this region. I really wish I could go back and read the thread last year, because I feel like we were worried about a similar situation playing out, and I believe everywhere in the Carolinas got at leas some accumulation from the event.

Thanks Phil, when you and Robert post I always learn something. I'm in pure weenie mode right living and dying by the modes :weenie:

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Eastern NC is going to have some BL issues this run, same as last but QPF has increased 4-5 fold. Surface temps never go below 0C, and 850's make a run for above freezing, maxing out at -0.5C before the heavier precip moves in. HAT is just under 1/2", with changeover there around 12z Thurs and maybe 2/10" as SN, ILM may also see a changeover around that time with likely under 1/10" as SN. FAY looks like all SN with 0.25", but as mentioned, surface temps are an issues, which would cut down on accum, likely as 32 and SN under anything heavy, going to 33-34 in lighter stuff. RDU is 0.12" all SN but again, surface temp issues. RWI is 0.20" likely all SN and PGV is 0.29" all SN. Only concern is surface temps with none of these stations below freezing for the event, at-least per the Euro at 6hr steps .

You got to think the Euro is a little high with temp's, the NAM is colder and so is the GFS with no precip.

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Looks like with these trends CLT might be the spot to be when it's all said and done especially on the south eastern flank.

One thing remember the ULL storm a few weeks ago, we were in the thick of it and then it kept trending wetter and wetter and wetter for points north and west. Hopefully we see the same thing, this time though even those to the south and east would still get in on the game.

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however at some point this feature will transfer to the coastal low and skip over or speed over certain regions. Unfortunately the midlands of NC/SC look like a prime target for this occur as the energy transfer occurs. However, if the models continue to trend stronger with the s/w, it will also draw the coastal low further west, and the energy transfer will be more seamless, with less of a hole of precipitation in this region. I really wish I could go back and read the thread last year, because I feel like we were worried about a similar situation playing out, and I believe everywhere in the Carolinas got at leas some accumulation from the event.

I recall us having the 'energy transfer to the coast' debate with the March 2, 2010 storm.

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Well someone just NW of the precip shield is going to be pissed. There is a fine cutoff. You could have 2-4" of snow and then 20 miles NW you could have partly cloudy skies.

That's pretty much what Michelle Kennedy (local met) said. She showed light snow amounts all around Winston, but we were in the 0.0 zone. Go figure.

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