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Wintry 1/9-12 Winter Potential Great Dane or Yorkie

This is one of those storms where I can see the front end thump over performing, especially down in GA, but the warm nose on the back end also over performs as well.

Here, I explain one of the main reasons why I suspected this morning's snow would over perform in Georgia.

Somewhat counter intuitively, it actually comes down to not properly handling/underestimating the strength of the warm nose & warm advection aloft.

While a stronger warm nose/warm advection aloft eventually leads to a wider area transitioning from snow to sleet, it also often favors greater snowfall rates prior to that transition via frontogenesis enhancement from melting snow partially offsetting warm advection.

Other processes like adiabatic ascent, latent heat release from greater snow production in the DGZ aren't mentioned here but are worth noting.

 
My final forecast for MBY (N Chapel Hill) is 2-3”, ~2” at RDU, 1-2” in Raleigh-proper, and 3-4” at @BullCityWx’s winter wonderland in N Durham (😂). Could easily see more, or less. Tough forecast and I’m not a met lol. All areas get snow, but all mix with IP/ZR with more mixing towards Raleigh. Don’t see more than 0.1” ice accrual, and probably not even that much.

Also 3-4” for GSO and 1-2” for CLT.
I'm going 3" mby yard now, HRRR trends have me sold (I'm sure I'll regret it lol). Those rates just before we flip to sleet will be fun, haven't seen anything like that in 3 yrs
 
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Will the snow pack from the south from the front end thump help with temps at all?


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