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Fall 2015 Pattern Discussion


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Farther north and drier. Upstate SC will end up dry with this system yet.

WPC must be using a model "blend" , their map has 2.5-4" on their 5 day precip map this AM! :)

GSP has 1.5-2" for most of our area and possibly double that in upslope areas! I think this coming in near the GA/SC coast , puts us in a prime spot for some solid rains!

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From GSP this morning:

 

.SHORT TERM /THURSDAY THROUGH FRIDAY NIGHT/...
AS OF 330 AM WEDNESDAY...INCREASING CONFIDENCE WITH THE FCST FOR THE
END OF THE WEEK AS THE LATEST MODEL GUIDANCE IS BUILDING A CONSENSUS
FOR PRECIPITATION STARTING ON THURSDAY AND CONTINUING THROUGH FRIDAY
ACROSS MUCH OF THE AREA. CHANGES WILL TAKE PLACE ON THURSDAY AS A
WESTWARD-MOVING 850MB LOW MOVES ONSHORE ALONG THE SC/GA COAST IN THE
MORNING AND BRINGS A MOIST EASTERLY FLOW TO BEAR ACROSS THE
CAROLINAS. THE 850MB U-FLOW IS SOMETHING ON THE ORDER OF NEARLY
THREE STANDARD DEVIATIONS TO THE NEGATIVE (EASTERLY) BY LATE
THURSDAY. TO GO ALONG WITH THE MECHANICAL FORCING NEAR THE BLUE
RIDGE...THE MOVEMENT OF THE 500MB LOW WILL BRING DPVA ACROSS THE
REGION FROM THE SE...WHILE UPPER DIVERGENCE DEVELOPS OVERHEAD AS A
JET STREAK LIFTS OUT OF THE UPPER TROF. EXPECT PRECIP TO SPREAD
WESTWARD THRU THURSDAY AND BECOME CONCENTRATED NEAR THE BLUE RIDGE
THURSDAY NIGHT. THE DEEP MOIST FLOW PERSISTS THRU FRIDAY AND INTO
FRIDAY NIGHT. WILL RAISE PRECIP PROBABILITY INTO THE LIKELY RANGE
FOR MOST OF THE BLUE RIDGE/NC FOOTHILLS THRU THE REST OF THE PERIOD.
EXCEPTIONS WILL BE ON THE TN BORDER INITIALLY WHERE DOWNSLOPE MIGHT
KEEP RAIN AT BAY INTO THURSDAY NIGHT...THEN ACROSS NE GEORGIA FRIDAY
NIGHT WHERE THE POTENTIAL FOR A DRY SLOT WRAPPING IN FROM THE SW
MIGHT CUT DOWN ON PRECIP. CLOUDS AND PRECIP SHOULD KEEP TEMPS A FEW
CATEGORIES BELOW NORMAL...ESPECIALLY ACROSS THE NC FOOTHILLS AND NW
PIEDMONT. THE MAIN CONCERN WILL BE THE POTENTIAL FOR FLOODING. THE
COMBINATION OF FORCING AND THE DURATION OF THE DEEP ATLANTIC
MOISTURE FEED SUGGEST A SOAKING RAIN FOR THE ENTIRE AREA ON THE
ORDER OF 1.5 TO 2 INCHES...AND PERHAPS DOUBLE THAT IN THE UPSLOPE
AREAS NEAR THE BLUE RIDGE AND SE UPSLOPE PARTS OF THE BALSAMS. AT
THIS POINT
...IT IS TOO EARLY TO ENTERTAIN A FLOOD WATCH...AS WE
PREFER TO SEE SOME CONTINUITY WITH MODEL GUIDANCE BEFOREHAND.

 

 

ipqOJYx.jpg

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I love how Robert says a strong fetch off the Atlantic will soak GA soon, when the WPC is showing less than .25" in my area the next 7 days.

 

Depends on several things but the potential is there, this is the loop of the mess off the SE coast, plenty of moisture but with this setup some places are going to get more than others, and its hard to tell who and where that will be...that southern "blob" looks good actually decent little spin there.....

 

http://www.ssd.noaa.gov/PS/TROP/floaters/97L/flash-rbtop-long.html

 

http://radar.weather.gov/radar.php?rid=VAX&product=N0Z&overlay=11101111&loop=yes

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RAH's morning update...

CONVECTIVE ALLOWING MODELS ARE INCREDIBLY AGGRESSIVE AT THIS TIME WITH PRECIPITATION AND THEIR SOLUTIONS HAVE BEEN VIRTUALLY THROWN OUT AT THIS TIME. WITH MAIN SHIELD OF PRECIPITATION OFF THE COAST WOULD EXPECT THIS TO COME IN AFTER MIDNIGHT WITH POTENTIALLY A FEW SPRINKLES OR LIGHT SHOWER PRIOR.
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WRAL Rainfall potential...

 

WRAL Mike Maze shared their photo.
34 mins ·
12052595_986725824711657_763760454606520

Today is the first day of Fall and it had a breezy, cool feel to the day. Tomorrow through Sunday make sure you have your umbrellas handy and make sure a light jacket is available. We are about to see the evolution of a pattern we are famous for here in North Carolina where it's breezy, damp and chilly for days. Taking a look at the rain potential for the next five days gives you the idea we are in for a soaking!

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I've been in LA the past few days and it was hot. I was kind of looking forward to 75 and sunny since it was like 95 the whole time I was here. Anyways NC/SC always seems to overperform in these types of setups so I wouldn't be surprised if we end up in the 2-3 inch range for most of the area when it's all said and done. The best part is this will be a long soaking rain.

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