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January 10/11 Winter Storm Potential - May the Odds be Ever in our Favor


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9 minutes ago, cbmclean said:

Where is a good site for radar coverage with p-types?

https://weather.cod.edu/satrad/nexrad/?parms=RAX-N0B-0-24-100-usa-rad

 

You can futz around with the different products, here. I don't have the knowledge or experience to guide you, but I know the CC radars are good for showing discontinuities that might represent p-type changes.

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I think ice accumulations are going to end up higher than anticipated in the upstate.    Have had light freezing rain for the last 2 to 3 hours.   At about 0.1 in per hour.    Temps are hovering around 29 F so perfect conditions for accumulation.  

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33 minutes ago, NC DataDude said:

Should I be ummm nervous about power?

image.png.811cb1e48fe03b19f41521592a5cbf5f.png

 

Unfortunately, I would say so. I remember the massive ice storm Chapel Hill had many years ago that literally shut down the city for almost a week. We had about .30” of ice in our neighborhood. No power for six days. It was awful. Hopefully you won’t get that!

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We did the bare minimum in Raleigh to break the streak. We had about 0.3 to 0.5 inches of snow/sleet depending on the surface here. Definitely even underperformed even the 1 inch forecast. ZR now.

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4 minutes ago, WNC_Fort said:

All hail the NAM. I think the storm ovrerperformed in some areas (ATL) and was a BIG disappointment in others (Upstate SC, WNC, Triangle)

It was good to see snow again, but this totally sucked with freezing rain. Glad its almost over as the backend is quickly approaching.

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2 minutes ago, AirNelson39 said:

 We found that the NAM can’t be ignored and the global just couldn’t get a grasp on the warm nose. 

This is pretty normal. The NAM is out to lunch many times, but it is great with mid level temps in these set ups. Likewise, globals simply don't have the resolution to handle this.

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8 hours ago, lilj4425 said:

This that snowstorm somebody ordered off Temu.

LOL. Not in the Atlanta area. Overperformed there. Only thing that ruined it, was the transition to rain, which was expected. Me 40 miles south of ATL wound up with around 1/2" to an 1", then it flipped to freezing rain all afternoon until around 10 pm last night. Everything was glazed over with a decent amount of ice. Fortunately we stayed at 32 overnight, most of the ice is gone, but whatever snow we had is just about gone too. I expect it will all be gone by this afternoon. Nice little storm, more than anyone has had in a while. We should all be thankful.

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Idk what everyone took away from this storm, but I know one thing - going forward, I’ll take the NAM suite over all other short range guidance. It was on an island of its own and absolutely nailed it from 48 hrs out. My line of thinking in future storms (sub 2 days out) will be to put 90% of my stock and expectations in the NAM solution and about 10% in things like the HRRR or FV3. The RGEM performed greatly with last weekends storm and performed horrendously with this one. Idk what to do with it yet but we’ll put it on house arrest for the time being. 
 

other things we learned:

- No arctic high? Keep expectations in check.

- the EURO AI didn’t perform great with amounts but nailed the track. We’ll need to consider it heavily moving forward. 
 

- Warm air advection always wins 

 

All in all, I enjoyed tracking this. In typical southeast fashion, there are haves and have nots but many of us got on the board and shook the drought early in the season. The pattern going forward favors the mid-south but let’s just see. I think we have something to track at least once more as the pattern starts to break down late month. 

 

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