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Storm Threat Dec 26-28 Period


Ralph Wiggum

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weird h5 progression.... went a different, more amp'd solution @ h5, but primary SLP ended up almost exactly like 12z.. but then the 0z transfers (takes its time)... something the less amp'd 12z didnt do. by 150, h5 matched up. But you can see differences as the SW leaves the 4 corners region. looks like the ENS

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weird h5 progression.... went a different, more amp'd solution @ h5, but primary SLP ended up almost exactly like 12z.. but then the 0z transfers (takes its time)... something the less amp'd 12z didnt do. by 150, h5 matched up. But you can see differences as the SW leaves the 4 corners region. looks like the ENS

you can def see why it transfered..better high position which is blocked in by better confluence and 50/50 low. It flattens the hgt line sout. Whereas 12z didn't have that at all. Even though it was amplifed more, it basically hit a brick wall.

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you can def see why it transfered..better high position which is blocked in by better confluence and 50/50 low. It flattens the hgt line sout. Whereas 12z didn't have that at all. Even though it was amplifed more, it basically hit a brick wall.

yeah, def. Hopefully we can get that primary to head towards western/central NC a bit and transfer off the coast :-)...BUt at least we're getting away from the Cutter idea

but with ray being home....................i wont say more after that.

ps. nice job on the PBP.. sure sign of a pattern change!

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fwiw, off the 0z GFS (in no particular order)

KABE - 0.87" - 0.47" snow, 0.20" sleet, then another 0.20" snow

KPNE - 0.99" - 0.36" IP/ZR mix, 0.47" rain but with 2 m temps barely above freezing, 0.16" snow

KRDG - 1.20" - 0.44" snow, 0.25" IP/SN mix, 0.09" IP/ZR mix, then another 0.42" snow

KMPO - 1.38", all snow but 1000-500 mb thicknesses indicate there might still be a sneaky warm layer somewhere

KDYL - 0.84" - 0.06" snow, 0.47" IP/ZR mix, 0.15" sleet, then another 0.16" snow

KPHL and points south - take a guess

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fwiw, off the 0z GFS (in no particular order)

KABE - 0.87" - 0.47" snow, 0.20" sleet, then another 0.20" snow

KPNE - 0.99" - 0.36" IP/ZR mix, 0.47" rain but with 2 m temps barely above freezing, 0.16" snow

KRDG - 1.20" - 0.44" snow, 0.25" IP/SN mix, 0.09" IP/ZR mix, then another 0.42" snow

KMPO - 1.38", all snow but 1000-500 mb thicknesses indicate there might still be a sneaky warm layer somewhere

KDYL - 0.84" - 0.06" snow, 0.47" IP/ZR mix, 0.15" sleet, then another 0.16" snow

KPHL and points south - take a guess

I wonder how the GFS comes up with only 0.87" qpf at Allentown while Mount Pocono and Reading show 1.38" and 1.20" respectively...

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6z gefs are in good agreement with a primary track to ky but develop the coastal sooner and move it from se va to benchmark track

Really strong consistency with the ensembles with this storm --- even going back several days. I imagine the trend of the models 'tightening up' will now begin to take place as we get closer, as it did overnight. It's also promising to see two very consistent runs of the GFS Op after runs all over the place.

This storm has really taught me a lot thus far and, most of the time, it's really just reading what the pros and truly informed put out there. I think the best time for the amateur to learn (and, pretty much stay quiet) is during pattern changes because there are so many players to watch with each run.

Good stuff and thank you.

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6z gefs are in good agreement with a primary track to ky but develop the coastal sooner and move it from se va to benchmark track

The best the individual GEFS members have looked at e-wall for this event. A number of snow hits or snow/rain near misses. Good signal for strong confluence.

post-1201-0-57803000-1356097220_thumb.gi

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we seem to be narrowing that one down to a miller B with all the usual problems of how far north the primary gets and where secondary development takes place. I hate those storms lol, could very well be a nail biter bobbing a little north and south of this track every run the next five days.

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Going to be an interesting next few days to see how the models trend on the development of the secondary off the coast... Even the slightest changes in timing, positioning, development will result in some major differences inland - especially considering the nature of Miller B storms.

typically becomes a real time forecasting event of where the transfer takes place and how far N/S it is... Im sure all are hoping for a more southern track to the delmarva area.

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Going to be an interesting next few days to see how the models trend on the development of the secondary off the coast... Even the slightest changes in timing, positioning, development will result in some major differences inland - especially considering the nature of Miller B storms.

Agree. We still have a long way to go. Nothing is set in stone. All we can say is odds are currently better to the N+W

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