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Ending out December with a Potential Pattern Change


CoastalWx

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It's too bad...because that is going to make it less likely we get a good snow event before the end of the month. I would have rather kept the 12/30-31 event on the table as the cold air was much better established by then.

We'll want to hope that the event currently on the Euro slows down another 24 hours and really lets the cold establish itself...and does this without cutting.

didn't you lecture us about day 6 specifics? Confused
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didn't you lecture us about day 6 specifics? Confused

 

How is that specific? I am using terms like "less likely".

 

We are "less likely" to get a snow event if the storm rides up the boundary before the cold air is established. Now does "less likely" mean it can't snow? Last I checked it did not. In fact, the verbatim solution was a good shot of snow before mixing, but I "prefer" the storm to happen a bit later when the cold air is established...this would make it "more likely" to be snow here.

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How is that specific? I am using terms like "less likely".

We are "less likely" to get a snow event if the storm rides up the boundary before the cold air is established. Now does "less likely" mean it can't snow? Last I checked it did not. In fact, the verbatim solution was a good shot of snow before mixing, but I "prefer" the storm to happen a bit later when the cold air is established...this would make it "more likely" to be snow here.

ah gotcha,most of us use those terms anyways. Looks more likely low level cold air gets established on the Ens providing the less likely occurrence of this being a rainer.
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ah gotcha,most of us use those terms anyways. Looks more likely low level cold air gets established on the Ens providing the less likely occurrence of this being a rainer.

 

 

Yeah my issues on 6-7 day progs are really for those dissecting QPF and rain/snow lines as if 50-100 miles means anything at that timeframe...we can make general statements about what is more or less likely depending on certain features or timing. I think that is fair game.

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Unless there is no ridge?

 

 

There's a good one just off the SE coast there...and that's the 144 panel....rewind that about 18-24 hours.

 

It will be a battle between the SE ridge and that impressive shortwave swinging east from James Bay to provide the confluence. Both of those features ar eon the Euro and GFS...those two, along with any nuances in the main shortwave associated with the storm itself will determine the outcome...rewind it back to 2007 through 2009...fun model chaos in fast flow gradient patterns. :lol:

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There's a good one just off the SE coast there...and that's the 144 panel....rewind that about 18-24 hours.

 

It will be a battle between the SE ridge and that impressive shortwave swinging east from James Bay to provide the confluence. Both of those features ar eon the Euro and GFS...those two, along with any nuances in the main shortwave associated with the storm itself will determine the outcome...rewind it back to 2007 through 2009...fun model chaos in fast flow gradient patterns. :lol:

The SE ridge is moving OTS on the GFS negating its effect, in fact the para is suppressed. Similar to our retreating high  only this time its a retreating SE ridge. Great runs today, very encouraging. The wagons west option took a huge hit today, hopefully that trend continues.

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There's a good one just off the SE coast there...and that's the 144 panel....rewind that about 18-24 hours.

 

It will be a battle between the SE ridge and that impressive shortwave swinging east from James Bay to provide the confluence. Both of those features ar eon the Euro and GFS...those two, along with any nuances in the main shortwave associated with the storm itself will determine the outcome...rewind it back to 2007 through 2009...fun model chaos in fast flow gradient patterns. :lol:

 

Fast flow and 6-hour events (thumps).

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The SE ridge is moving OTS on the GFS negating its effect, in fact the para is suppressed. Similar to our retreating high  only this time its a retreating SE ridge. Great runs today, very encouraging. The wagons west option took a huge hit today, hopefully that trend continues.

 

 

Well you are more optimistic than me...I don't favor suppression right now, though perhaps that will change if things look strong up north.

 

 

This doesn't scream to me that amped up westward solutions took a hit today:

 

f120.gif

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The SE ridge is moving OTS on the GFS negating its effect, in fact the para is suppressed. Similar to our retreating high  only this time its a retreating SE ridge. Great runs today, very encouraging. The wagons west option took a huge hit today, hopefully that trend continues.

No I don't think the wagons west option took a huge hit today. The SE ridge is real and you can't ignore it. Oh and NAVGEM is really amped. What's the rule when both the EURO and NAVGEM are amped?

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