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December 20-22 Winter Storm (Blizzard?) Potential


Hoosier

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Personally I would love to see the NAM verify (will be home in MN tomorrow for Christmas), but northern stream interference always worries me, plus the NAM is never worth putting stock in when the upper baroclinic wave is on the edge of the boundary (I have learned that even more forecasting out here in AK where the NAM is completely and utterly worthless near the edges of its boundary).

Only hope for a NW push/stronger cyclone would be the perfect combination of a perfectly ejecting PV anomaly to incite rapid development leeside...and a slower ejection which would help limit northern stream influence.

So what's Baro's hunch think right now?

Hope all is well up in AK btw

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Personally I would love to see the NAM verify (will be home in MN tomorrow for Christmas), but northern stream interference always worries me, plus the NAM is never worth putting stock in when the upper baroclinic wave is on the edge of the boundary (I have learned that even more forecasting out here in AK where the NAM is completely and utterly worthless near the edges of its boundary).

Only hope for a NW push/stronger cyclone would be the perfect combination of a perfectly ejecting PV anomaly to incite rapid development leeside...and a slower ejection which would help limit northern stream influence.

I think the key to look at here is the northern wave and what it does H85-H7, if it keeps most of the energy north of the border this system could cut up, if the energy drops south it will not cut up. Just my amateur opinion .

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Personally I would love to see the NAM verify (will be home in MN tomorrow for Christmas), but northern stream interference always worries me, plus the NAM is never worth putting stock in when the upper baroclinic wave is on the edge of the boundary (I have learned that even more forecasting out here in AK where the NAM is completely and utterly worthless near the edges of its boundary).

Only hope for a NW push/stronger cyclone would be the perfect combination of a perfectly ejecting PV anomaly to incite rapid development leeside...and a slower ejection which would help limit northern stream influence.

At any rate welcome home!!!

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The model spread tells me that the Euro is not a outlier, the true outlier is the Nam, other than that at this far out a difference of 50 miles or so is no big outlier

EURO definitely is not the outlier. We're 80 + hours away from it impacting the subforum with the system in the north Pacific. 50 miles is nothing! lol

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The model spread tells me that the Euro is not a outlier, the true outlier is the Nam, other than that at this far out a difference of 50 miles or so is no big outlier

The NAM is the biggest outlier. Another way to put it would be that the NAM is on the western edge and the ECMWF on the eastern edge of the envelope.

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Gladly would take that mean track and stronger.

You and me both..

Strange to have them be the eastern/se most solution. In the PAST typically if the euro ensembles did not follow the OP then usually the OP on the following run adjusted back towards them.. Ofcourse this is not the same mighty euro it once was either. Still it gives a sliver of hope for those of us further east..

Now to see how badly the NAM torches us this run..

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