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Jan 24-26 Weekend Snow and Sleetfest Model Thread Part Tres


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6 minutes ago, wxmeddler said:

We're in for some real sh*t if that's the case. Most guidance gets the fall line and SE at or above +5C as early as 11am tomorrow. Would love to see those studies if you have the links. 

I don't recall ever having a situation where there is a +7 to -8 swing in a single profile in this area. That is some southern high plains ice storm levels of cold air wedging. We do not see this here.

Seems like multiple studies disagree with each other. One I read/skimmed said that if we have a freezing layer of 3000+ feet below the elevated warm layer it’ll refreeze to sleet regardless. Just such an extreme setup to where it all breaks down. 

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4 minutes ago, SnowenOutThere said:

Seems like multiple studies disagree with each other. One I read/skimmed said that if we have a freezing layer of 3000+ feet below the elevated warm layer it’ll refreeze to sleet regardless. Just such an extreme setup to where it all breaks down. 

wild to think we'd have a layer of 40+F air when it's around 20F at the surface.  That would seem to produce a catastrophic ice storm if it occurs though.

 

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4 minutes ago, SnowenOutThere said:

Seems like multiple studies disagree with each other. One I read/skimmed said that if we have a freezing layer of 3000+ feet below the elevated warm layer it’ll refreeze to sleet regardless. Just such an extreme setup to where it all breaks down. 

I'd imagine besides the depth of freezing layer there's also variability based on if the drops contain ice nucleating particles which then becomes a matter of if they were homogenously nucleated in the first place. Probably no way to tell

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21 minutes ago, balltermen said:

it flips in DC around 15z probably, but it dumps prodigious amounts of snow before then.  around 10" 

weird. its 10:1 map was more snow than the weenie ratio map

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8 minutes ago, konksw said:

I think the sleet is overblown. 

Look at mPING as it relies on actual observations, not the colors on radar maps. It currently has sleet up to Ada, OK, right in line with the Euro and HRRR. It does appear the NAM was too warm at the mid levels, though, as it had sleet up to I-40 where it’s currently all snow.

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