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4th Annual Fall/Winter Thread for the Mountains/Foothills


Met1985

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.LONG TERM /WEDNESDAY THROUGH SATURDAY/...

AS OF 300 AM SUNDAY...THE FCST BECOMES TRICKY AND PROBLEMATIC FROM

MID-WEEK ONWARD AS WE WILL HAVE TO CONTEND WITH TWO SYSTEMS...AN

INITIAL ONE MAINLY DOMINATED BY MID/UPPER FORCING ON WEDNESDAY...

AND A FOLLOW-UP ONE DURING THE LATE WEEK THAT HAS THE POTENTIAL TO

BE MUCH MORE SIGNIFICANT. AS USUAL...UNCERTAINTY ABOUNDS DUE TO

RAPIDLY INCREASING ENSEMBLE SPREAD BEYOND WEDNESDAY. ON THE ONE

HAND...THERE SEEMS TO BE A TREND WITH A MORE NORTHERLY TRACK WITH

LOW PRESSURE MOVING ACROSS THE SOUTHEAST THURSDAY NIGHT AND

FRIDAY...WHICH SUGGESTS LESS OF A P-TYPE ISSUE. ON THE OTHER

HAND...THE GEFS PLUME DIAGRAMS FOR THIS FCST CYCLE ACTUALLY SHOW

MORE ENSEMBLE MEMBERS WITH A FREEZING OR FROZEN P-TYPE. WITH THE

TREND IN THE GFS...THE POSSIBILITY OF SEVERE WEATHER OR HEAVY RAIN

OVER THE PIEDMONT IS STARTING TO CREEP UP WHILE THE POSSIBILITY OF A

WINTER STORM DECLINES. IN SPITE OF OVERALL LOW CONFIDENCE...IT SEEMS

MORE LIKELY THAT MOST OF THE REGION WILL NOT HAVE ENOUGH COLD AIR AS

THE LOW MOVES PAST FOR ANYTHING OTHER RAIN ACROSS MOST OF THE

WESTERN CAROLINAS. THE EXCEPTION WILL BE ELEVATIONS ABOVE ABOUT 4K

FEET...WHERE THERE STILL REMAINS THE POSSIBILITY OF TEMP PROFILES

COLD ENOUGH TO SUPPORT SNOW...AND MAYBE LOTS OF IT. HAVE WARMED

TEMPS ON THURSDAY NIGHT BY SEVERAL DEGREES ACROSS THE REGION BASED

ON THE WARM ADVECTION SEEN IN THE 00Z GFS...WHICH HAS CUT BACK QUITE

A BIT ON THE WINTER PRECIP POTENTIAL ACROSS THE NC FOOTHILLS/MTNS.

COLD AIR SHOULD EVENTUALLY FILTER IN BEHIND THE LOW ON FRIDAY NIGHT

AND SATURDAY...SO THERE IS DECENT CONFIDENCE FOR NEXT WEEKEND THAT

WE WILL SEE A PERIOD OF NW FLOW UPSLOPE SNOW SHOWERS ON THE TN

BORDER. FOR THE TIME BEING...WILL NOT MENTION ANY OF THIS IN THE

HWO.

unfortunately the euro is a few degrees too warm at 850 for most of the mtns. Hopefully that will trend colder going forward. I would like to see a bigger high building in and we would need an earlier phase to send the surface low thru the coastal plain. I'm hoping this one works out, the euro ensemble mean continues to creep up and is now at 6" for both events next week in Franklin.
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unfortunately the euro is a few degrees too warm at 850 for most of the mtns. Hopefully that will trend colder going forward. I would like to see a bigger high building in and we would need an earlier phase to send the surface low thru the coastal plain. I'm hoping this one works out, the euro ensemble mean continues to creep up and is now at 6" for both events next week in Franklin.

 

Definitely not a slam dunk but the pieces are there for a decent event. Have to watch the trends and see what happens. One thing for sure is this is the closest the Mnts have been to decent snow this winter!

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Definitely not a slam dunk but the pieces are there for a decent event. Have to watch the trends and see what happens. One thing for sure is this is the closest the Mnts have been to decent snow this winter!

it's very far out so a lot can change and I hope it does. It won't take a lot to make it work but things so far this winter just don't seem to be working out.
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Thanks Met I was a little to high in most areas and missed the SW part of WNC but glad some of you guys are seeing snowflakes!

 Not a bad forecast I don't think. Some areas were in your forecast range. I was a little low, but still had a 1/2 inch or so. I appreciate you giving a forecast.

 

On another note, Don Southerland posted this. "Today's AO is -4.916. That's the lowest figure since March 22, 2013 when the AO was -5.240" 

I guess it has helped, but not in the way we want. Don also notes that this would normally suggest a blocky Feb., but there are conditions present that may make this not happen, which wouldn't surprise me the way the winter has gone.

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