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January 20-22 “bring the mojo” winter storm threat


lilj4425
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26 minutes ago, PantherJustin said:

I’m sorry…. I get setups ect….. but no way Florence gets a foot …. Look at the setup and some of the areas forecast to recieve even a few inches Myrtle/Wilmington think of how rare this would be….. historically this outcome is near impossible imo 

https://www.weather.gov/ilm/ChristmasSnow1989

It's rare, but growing up in the Pee Dee, it is definitely not impossible.

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GSP still has wintery weather for the area Friday into Friday night.

As of 215 pm EST Tuesday: The pattern will get active once again
through the short-term period as a series of northern stream waves
dive southeast through the Great Lakes region Wednesday night into
Thursday and amplify a positively tilted trough from the Upper
Midwest to the central Plains. The trough will help to drive a moist
cold front into the southern Appalachians Wednesday night, which
will slip southeast of the area through Thursday. Anticipate mainly
liquid ptypes with the fropa, except at the higher peaks and
increasingly along the Tennessee border in brief, post fropa
northwest flow. Since the highest QPF over the western mountains
should be one-half inch or less, this should not be sufficient for
hydro issues to develop, even with some mountain snow melt.

It has become questionable how much of a lull will develop between
the cold fropa and redeveloping upglide over the stalling boundary.
A consensus is building that a sharpening upper jetlet may develop
along the southern Appalachians Thursday night through Friday. The
amplifying upstream trough will be potent, but now appears less
likely to cut off west of the Appalachians and more likely to get
picked up by the northern stream. The main uncertainty during the
Thursday night to Friday period is how vigorous any surface waves
become along the stalled boundary draped to our southeast. The ECM
has stronger development and pulls more moisture, and thereby QPF,
over the region Friday, while the GFS has a more muted response. The
ECMWF has trended slightly toward the GFS, but the GEFS ensembles
have plenty of snowy members still. Will use an ensemble approach to
profiles and keep mainly snow across the region, but with a snow,
sleet, and freezing rain mention for the southeast third. This will
be introduced into the HWO. Temps will be shaded below guidance as
cold air damming develops Friday from 1040 mb high pressure over New
England. The wintry precipitation will continue into the early
extended period.
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1 minute ago, Upstate Tiger said:

GSP still has wintery weather for the area Friday into Friday night.

As of 215 pm EST Tuesday: The pattern will get active once again
through the short-term period as a series of northern stream waves
dive southeast through the Great Lakes region Wednesday night into
Thursday and amplify a positively tilted trough from the Upper
Midwest to the central Plains. The trough will help to drive a moist
cold front into the southern Appalachians Wednesday night, which
will slip southeast of the area through Thursday. Anticipate mainly
liquid ptypes with the fropa, except at the higher peaks and
increasingly along the Tennessee border in brief, post fropa
northwest flow. Since the highest QPF over the western mountains
should be one-half inch or less, this should not be sufficient for
hydro issues to develop, even with some mountain snow melt.

It has become questionable how much of a lull will develop between
the cold fropa and redeveloping upglide over the stalling boundary.
A consensus is building that a sharpening upper jetlet may develop
along the southern Appalachians Thursday night through Friday. The
amplifying upstream trough will be potent, but now appears less
likely to cut off west of the Appalachians and more likely to get
picked up by the northern stream. The main uncertainty during the
Thursday night to Friday period is how vigorous any surface waves
become along the stalled boundary draped to our southeast. The ECM
has stronger development and pulls more moisture, and thereby QPF,
over the region Friday, while the GFS has a more muted response. The
ECMWF has trended slightly toward the GFS, but the GEFS ensembles
have plenty of snowy members still. Will use an ensemble approach to
profiles and keep mainly snow across the region, but with a snow,
sleet, and freezing rain mention for the southeast third. This will
be introduced into the HWO. Temps will be shaded below guidance as
cold air damming develops Friday from 1040 mb high pressure over New
England. The wintry precipitation will continue into the early
extended period.

 

 Temps will be shaded below guidance as
cold air damming develops Friday from 1040 mb high pressure over New
England. The wintry precipitation will continue into the early
extended period.
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Not sure why anyone is even saying any model is trending towards the gfs when yday miday the gfs didnt even have a storm when the euro did. Euro held serve today. I love the backyard talk with trying to get snow in their area. Also You dont want to be in the bullseye 4 days out. Lets see what the 0z models bring tonight. 

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Yeah, really like where the NAM is going at the end of the run.  But, I can’t decide if that’s a good or bad thing, because it’s the 84-hour NAM.  Virtually no wintry precipitation for anyone with the stalled out front unless you are on the immediate coastline.  But, it gets cranking near the end and possibilities abound…

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Just now, calculus1 said:

Yeah, really like where the NAM is going at the end of the run.  But, I can decide if that’s a good or bad thing, because it’s the 84-hour NAM.  Virtually no wintry precipitation for anyone with the stalled out front unless you are on the immediate coastline.  But, it gets cranking near the end and possibilities abound…

Yeah, I feel like the hr 84 NAM tends to be like... "Hey look! A storm!", When sometimes suppression makes more sense

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