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potential for a few (million) mangled flakes part 2


Alpha5

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Looks like ETA 3 and ETA 6 are balancing it out somewhat.

RGEM looks significantly further east than 18z... maybe we see a trend east with the models tonight?

I have a tendency to agree here (at least in terms of not guaranteeing a tight coastal hugger), especially with the relative extremity of the precipitable waters across the Gulf Stream and significant potential for quite a bit of moist convection across the WCB. Not saying there is any type of east trend, but it would not be a good idea from a pure forecasting standpoint to discount eastward guidance given the potential for a strong coastal to develop associated with moist convection resulting in poorer inland low level trajectories...which would have a negative effect on WAA/mutual amplification since the jet/trough configuration will not be conducive to a negative tilt and a coupled DMC/curved jet highly positive feedback configuration.

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the rgem plays on what i was discussing earlier with the w-e boundary in precipitation type that can develop in this setup. the city can very easily serve as a dividing line in that respect.

the rgem hammers new jersey all the way to the hudson river, leaves nyc mixing, and areas east of there are rain through 48 hr.

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I'd be shocked if this run didn't come a little farther west than the 18z run...judging by the 33 hr h5 depiction. The height field is slightly more backed on the east coast and the h5 trough in the SE states is sharper.

Yeah NAM and the GFS are going in opposite directions.

Hopefully the Euro splits the difference and goes right down the middle

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gfs exactly the same as 18z through 24 hours---maybe a hair more amplified.

However, it is not the same with where it positions Rina is 24 hours... its significantly further north and east with the 850mb vorticity of Rina. We shall see if this has any implications on the shortwave in the southeast.

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Won't be a good run for the coast, thats for sure.

Yea this is further west... not because of Rina may not have a major impact in the mid and upper levels now since it primarily a low level feature by this point, but because of the kicker trough which is somewhat slower, which will allow our 500mb trough to phase further west.

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