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Winter 2013-14 Pattern Discussion II


buckeyefan1

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Quick question guys, when you speak of "CAD favored areas" are you including the CAD favored areas of Georgia in this statement?

Speaking generally, most of the time the hp needs to be at least 1038-1040 (ESP over 1040) for the cad to push far enough se to get ga in the action. Granted it can depend on where it set ups etc but 1035 or weaker usually won't get the air colder than 32/33 or so

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Speaking generally, most of the time the hp needs to be at least 1038-1040 (ESP over 1040) for the cad to push far enough se to get ga in the action. Granted it can depend on where it set ups etc but 1035 or weaker usually won't get the air colder than 32/33 or so

Well, being that it was modeled at 1040 it would be strong enough. Obviously depending on where it set up at.

I personally don't care for a major ice storm here. It causes so many issues. Don't get me wrong, I think all of us weenies like to see Mother Nature flex her muscle every now and then but it's not fun when it drills you personally.

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Like GSP area ? If there was a solid snow over from VA north, would that help produce for Atlanta with a weaker 1035 high?

you are a good bit farther ne than atl - so would be in a better position with a slightly weaker high i would think.  there ahve been times when places in sc can get just under freezing, while ga is the infamous 33 and rain lol

 

hopefully there will be decent snow cover and if so, then the air mass might not moderate as much and lead to a few degrees lower temps

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Even though recent GFS and Euro runs have spared ATL and ATL may luck out and avoid this huge mess, I'd be extra wary about them getting colder because of climo as the current neutral negative ENSO has been associated with the largest % of winters of any ENSO phase by far having a major ZR or IP in ATL. It is close to a whopping 50% vs the overall for all ENSO phases closer to only 23%! The most common time is late January though 2/8 would be close enough for concern.

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12z Goofus off and running... through 120 I think we're gonna see something different this run, temp wise especially.

 

Going to see a cutoff ULL and big HP overhead.  850mb temps look too warm to me with the PV sitting over E Canada and HP all over the place.  Should see snow/ice breaking out over NC/VA by 150

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That's a really big swing in one run! Maybe euro is on to something?

 

This doesn't look like the Euro.  The euro has two storms rolling through, one day 6/7 and another day 7/8, first tracks up the Apps through the MA, 2nd one is a little farther SE, but still not snowy for us.  It doesn't wrap up the h5 low into a double/triple contour cutoff like the GFS.  Neither does the CMC.

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Well looks like the GFS is going to continue to amp it up well west and stall it... ain't gonna happen. Not with the PV south of Greenland.

 

 

Others share your thoughts as well...

 

 

Joe Bastardi @BigJoeBastardi 35m

Arctic high stretching Dakatos to New England, daring the Negative titled trough to send a low into it. Its like maps I doodled in class

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Obviously a long way to go and a number of solutions on the table, but if I had a nickel for every time somebody says that a storm can't cut into a block or high pressure ridge or confluence zone or whatever and then the storm actually did, I'd have a lot of nickels.

 

Well there is just a little spread when you compare the OP v/s the Ens mean though  :lmao:

 

The ENS mean takes the primary up the App's and transfers right over us as you can see below, I think a lot of people would see some ice in this scenario, still 7days away though.  Looked quickly at the CMC, nothing like the GFS, I need to look at it further, not sure what it's even doing.

 

--12z OP--

 

gfs_mslpa_us_59.png

 

---12z GEFS Mean---

 

gfs-ens_mslpa_us_30.png

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Overnight AFD from KGSP

 

Monitor for the Higher Terrain of NC Mountains.

 

AREA FORECAST DISCUSSION
NATIONAL WEATHER SERVICE GREENVILLE-SPARTANBURG SC
915 AM EST SUN FEB 2 2014

.LONG TERM /WEDNESDAY NIGHT THROUGH SATURDAY/...
AS OF 145 AM EST SUNDAY...THE MEDIUM RANGE FCST PICKS UP AT 00Z ON
THURSDAY WITH THE UPPER TROF LIFTING TO OUR NORTH AS THE UPPER
PATTERN BEGINS TO FLATTEN OUT AND BECOME MORE ZONAL. OVER THE NEXT
COUPLE OF DAYS...UPPER RIDGING WILL GRADUALLY BUILD OVER THE SE
CONUS AS A SOUTHERN STREAM UPPER TROF DIGS DOWN OVER THE WESTERN
CONUS. THE LONG RANGE MODELS HAVE THIS UPPER TROF APPROACHING THE
FCST AREA BY EARLY SUN WHICH IS DAY 7.

AT THE SFC...A FAIR AMOUNT OF UNCERTAINTY REMAINS WRT THE EVOLUTION
OF THE SFC PATTERN FROM FRIDAY ONWARD. HIGH PRESSURE IS EXPECTED TO
REMAIN OVER THE REGION THRU THURS WITH SOME SORT OF WEDGE PATTERN
BEGINNING TO ESTABLISH ITSELF OVER CENTRAL NC ON FRIDAY. THE MODELS
THEN GENERATE A LOW OVER THE NORTHERN GULF COAST ON SAT AND TRACK IT
NE TOWARDS NEW ENGLAND OVER THE REMAINDER OF THE WEEKEND. THE LATEST
00Z RUN OF THE GFS IS ABOUT 12 HRS SLOWER DEVELOPING THE LOW AND
MOVING IT NE COMPARED TO THE 00Z ECWMF. WITH THE UNCERTAINTY
REMAINING THIS FAR OUT ON DAYS 6 AND 7...NO MAJOR CHANGES WERE MADE
TO THE SENSIBLE FCST. PERIODS OF RAIN...SNOW...SLEET...AND FRZ RAIN
WERE INCLUDED IN THE FCST GRIDS OVER THE HIGHER TERRAIN WITH MOSTLY
RAIN OVER THE REST OF THE CWFA
. ALTHOUGH IT IS STILL TOO FAR OUT TO
TRY AND PINPOINT EXACT DURATIONS AND AMOUNTS OF FROZEN PRECIP...SOME
COMBINATION OF P-TYPES LOOKS LIKELY ESPECIALLY OVER THE HIGHER
TERRAIN
. TEMPS WILL START JUST BELOW CLIMO WITH HIGHS REMAINING
BELOW CLIMO THRU THE PERIOD AND LOWS LIKELY WARMING ABOVE CLIMO BY
THE WEEKEND.

&&

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