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Medium/Long Range Discussion Part 3


IWXwx

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Ground is pretty frozen considering it's been bare. I bet there is close to a foot of frost. 

Hasnt been bare but the snowcover has been very light, not enough to insulate it...that probably helped it get so frozen. Look at what happened in late Dec into early Jan...as soon as it got cold we immediately got a thick blanket of snow which insulated the ground so when the torch came it was not really frozen.

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Models will probably start to show the 1st tulip popping torches in 3 weeks or so. Gotta make up some ground real fast.

lol. The snow season officially reaches its halfway point tomorrow. I dont think we have to make up ground "real fast".

 

Models probably will show a tulip popping torch....they will also probably will show a historic snowstorm, a huge arctic blast, rain to cold scenarios, etc.

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12z Op GFS looks like an outlier amongst its ensembles. Looks like about 7 of the ensemble members have a cutoff low, which is what recent Euro runs have been suggesting. Edit: although the 12z Euro seems to be trying to back off on how much it cuts off compared to previous runs. Models, lovely models.

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18z GFS certainly wasn't a cut off, essentially swings it neutral tilt on Tuesday through the Plains and then bombs the dynamics on Wednesday with a 130+ kt speed max at H5.

Very impressive 500 mb winds on the GFS. There's actually a max of about 150 kts in Canada at 31/6z.

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I'd like for the Euro to come back some on this, it had a baby step toward a solution that doesn't involve a cutoff but we need more than that from the Euro. The problem is the Euro and to an extent the GGEM tries to suck some of the vorticity underneath the PNA ridge. If that doesn't happen a much stronger solution will certainly be on the table.

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