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Nowcast and obs for Wednesday evening through Thursday night's wintry mix storm event.


Typhoon Tip
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Setting the table on a possibly "moderate" impact winter storm.  Perhaps the most promising event to date, this season.

Presently...  

Radar upstream argues for a stronger precipitation loading than some of the guidance have been illustrating.

image.png.5b83ceadf5c3a375269bb7fbccf664cb.png

 

However ... these rad looks can be deceptively over and under suggestive, either way. Therefore, that statement is not an aver for a big deal here...just that at this hour, that arc is pretty potent looking as it advances E into PA and matching that against the axis positioning by the guidance, it's not impossible that just ends up through the region with some higher fall rates. Combining...some of these recent guidances ( last hours) going colder with 200 mb of the sfc, is worth it to mention.  

Re that: the new NAM solution has almost doubled the Logan numbers, and I'm seeing an uptick out around ALB.   Judging by radar return and overall lay-out, this is tentatively a nod to a better performance. While also cooling the column below 800 mb sigma

Sat presentation has the abrupt ceiling advancing, shielding the skiess rather abruptly ...already so western regions.

T/DP spread around the region looks like this, ..biasing the obs to NW-N regions because this is our loading source for the lower troposphere later this evening and throughout ( particularly) Thursday.

image.thumb.png.abb838fce246e97996bffbb1367c271d.png

 

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  • Typhoon Tip changed the title to Nowcast and obs for Wednesday evening through Thursday night's wintry mix storm event.
2 hours ago, Typhoon Tip said:

Setting the table on a possibly "moderate" impact winter storm.  Perhaps the most promising event to date, this season.

Presently...  

Radar upstream argues for a stronger precipitation loading than some of the guidance have been illustrating.

image.png.5b83ceadf5c3a375269bb7fbccf664cb.png

 

However ... these rad looks can be deceptively over and under suggestive, either way. Therefore, that statement is not an aver for a big deal here...just that at this hour, that arc is pretty potent looking as it advances E into PA and matching that against the axis positioning by the guidance, it's not impossible that just ends up through the region with some higher fall rates. Combining...some of these recent guidances ( last hours) going colder with 200 mb of the sfc, is worth it to mention.  

Re that: the new NAM solution has almost doubled the Logan numbers, and I'm seeing an uptick out around ALB.   Judging by radar return and overall lay-out, this is tentatively a nod to a better performance. While also cooling the column below 800 mb sigma

Sat presentation has the abrupt ceiling advancing, shielding the skiess rather abruptly ...already so western regions.

T/DP spread around the region looks like this, ..biasing the obs to NW-N regions because this is our loading source for the lower troposphere later this evening and throughout ( particularly) Thursday.

image.thumb.png.abb838fce246e97996bffbb1367c271d.png

 

Noting some moderate snow obs (0.5 vis) across northeast PA? KAVP & KMPO

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2 hours ago, Typhoon Tip said:

Setting the table on a possibly "moderate" impact winter storm.  Perhaps the most promising event to date, this season.

Presently...  

Radar upstream argues for a stronger precipitation loading than some of the guidance have been illustrating.

image.png.5b83ceadf5c3a375269bb7fbccf664cb.png

 

However ... these rad looks can be deceptively over and under suggestive, either way. Therefore, that statement is not an aver for a big deal here...just that at this hour, that arc is pretty potent looking as it advances E into PA and matching that against the axis positioning by the guidance, it's not impossible that just ends up through the region with some higher fall rates. Combining...some of these recent guidances ( last hours) going colder with 200 mb of the sfc, is worth it to mention.  

Re that: the new NAM solution has almost doubled the Logan numbers, and I'm seeing an uptick out around ALB.   Judging by radar return and overall lay-out, this is tentatively a nod to a better performance. While also cooling the column below 800 mb sigma

Sat presentation has the abrupt ceiling advancing, shielding the skiess rather abruptly ...already so western regions.

T/DP spread around the region looks like this, ..biasing the obs to NW-N regions because this is our loading source for the lower troposphere later this evening and throughout ( particularly) Thursday.

image.thumb.png.abb838fce246e97996bffbb1367c271d.png

 

image.png.396fe4f19ac6e85d978f47da6b4a98a8.png

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