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Moving past first week of January General Discussion/banter


Baroclinic Zone

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Random thoughts: the polar vortex looks way too symmetrical and intense for me to get excited about something big, at least for the time being. Doesn't mean we don't see some good wintry wx for you guys (and who knows, maybe even me) but you aren't going to see a monster with a PV like what's being modeled. The flu is of course in the news and is correlated to water vapor anomalies. Post-holiday spike in cases makes sense but we could see a secondary peak coming up with this Arctic Air before slowly subsiding. Finally, if you are expecting an exact repeat of 94' you'll be disappointed. My mistake for not using a smiley to show exaggeration this morning. Some similarities? Sure...

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Random thoughts: the polar vortex looks way too symmetrical and intense for me to get excited about something big, at least for the time being. Doesn't mean we don't see some good wintry wx for you guys (and who knows, maybe even me) but you aren't going to see a monster with a PV like what's being modeled. The flu is of course in the news and is correlated to water vapor anomalies. Post-holiday spike in cases makes sense but we could see a secondary peak coming up with this Arctic Air before slowly subsiding. Finally, if you are expecting an exact repeat of 94' you'll be disappointed. My mistake for not using a smiley to show exaggeration this morning. Some similarities? Sure...

 

i don't think it's a random at all... in fact, I tried to discuss that it's not a very good pattern for widespread snow given to the fact that the gradient at mid levels is too intense, such that S/W have 0 mechanics in the flow. 

 

i was ...mildly attacked.    i still say the better scenario for us is when this flexing SPV from Jupiter relaxes some;  I'm angling for a bigger event between the 20th and 25th of the month.  The AO's connection with the antecedent stratosphere/troposphere events should hemispheric scaled be suppressing the westerlies, and that relaxes the flow some in the 60th parallel where we'll find our blocking nodes.  That appears fortuitously timed with a PNA rise.  

 

now watch us get clobbered on the 17th...  ha

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Random thoughts: the polar vortex looks way too symmetrical and intense for me to get excited about something big, at least for the time being. Doesn't mean we don't see some good wintry wx for you guys (and who knows, maybe even me) but you aren't going to see a monster with a PV like what's being modeled. The flu is of course in the news and is correlated to water vapor anomalies. Post-holiday spike in cases makes sense but we could see a secondary peak coming up with this Arctic Air before slowly subsiding. Finally, if you are expecting an exact repeat of 94' you'll be disappointed. My mistake for not using a smiley to show exaggeration this morning. Some similarities? Sure...

 

Most striking is the Fujiwara type effect as the second split off PV (if you will) gets slung down as an elongated PV into the Midwest. That 216-300 time frame seems best for a phaser ripping up the East Coast

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There will definitely be opportunities through the end of the month but I'm thinking something big or widespread may wait even longer (Feb 5-10). Then again, we can always get 2. haha

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Other standouts that month - Ft. kent, 4 of their coldest 26, records back to 1945. Allagash village (only since 1986), 4 of the coldest 6.

In Jan 1994, Allagash, Ft.Kent, Clayton, perhaps CAR, set the coldest non-MWN monthly mean temps I've seen for anywhere in New England. !st CT Lake may have been colder than CAR, but I don't think Mt. Mansfield was.

Funny, it wasn't that memorable for southern/coastal Maine. I'm sure we had a couple single-digit highs, but unless I'm blanking on it the PWM area didn't approach any records. It's a big state with a wide range of terrain and climo....
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Most striking is the Fujiwara type effect as the second split off PV (if you will) gets slung down as an elongated PV into the Midwest. That 216-300 time frame seems best for a phaser ripping up the East Coast

 

What you want is all of the low heights / deep cold to move into the eastern dipole with some sort of appendage back west. A very consolidated, deep, circular PV with a massive gradient is actually not the best pattern for a monster. It will crush the southern stream and not allow the s/w moving along to amplify. You need to have the waves underneath the Arctic Heights amplify and go negative and allow the deep, cold heights build into it.

 

But this is still a very active pattern with clippers etc. I'm just looking for monster potential and I don't see it yet on the modeling.

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What you want is all of the low heights / deep cold to move into the eastern dipole with some sort of appendage back west. A very consolidated, deep, circular PV with a massive gradient is actually not the best pattern for a monster. It will crush the southern stream and not allow the s/w moving along to amplify. You need to have the waves underneath the Arctic Heights amplify and go negative and allow the deep, cold heights build into it.

But this is still a very active pattern with clippers etc. I'm just looking for monster potential and I don't see it yet on the modeling.

1978, 2005, many others, Clippers can nuke for us.

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Most striking is the Fujiwara type effect as the second split off PV (if you will) gets slung down as an elongated PV into the Midwest. That 216-300 time frame seems best for a phaser ripping up the East Coast

 

This happened in January 1966. The PV was 510DM though and the southern stream was much more amped up. Very unlikely, but anything possible 216 hrs out.

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