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Feb 25-26 Discussion/pbp


Wow

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Page Liked · 7 mins · Edited · 
 

My updated Snow Forecast Totals...Tree toppling stuff near Raleigh and Southeast Virginia I'm afraid. I generally went up about everywhere. The heaviest looks like near Raleigh, eastern Piedmont into Southeast Virginia, where over a Foot Possible. Stay safe and enjoy the storm.

 

 

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Page Liked · 7 mins · Edited · 
 

My updated Snow Forecast Totals...Tree toppling stuff near Raleigh and Southeast Virginia I'm afraid. I generally went up about everywhere. The heaviest looks like near Raleigh, eastern Piedmont into Southeast Virginia, where over a Foot Possible. Stay safe and enjoy the storm.

 

 

 

 

 

I'm confused because Wakefield has now lowered their call for SE Va--I'm in Chesapeake and it's now saying 3-5" total.

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MODEL GUIDANCE HAS TRENDED SLIGHTLY MORE NORTHERLY WITH THE TRACK OF
THE DEVELOPING STORM SYSTEM AND IN FACT THE LATEST SURFACE ANALYSIS
SHOWS THE SURFACE CENTER SLIGHTLY NORTH OF THE FORECAST POSITION.
THIS CONTINUED TREND RESULTS IN A SLIGHTLY WARMER BOUNDARY LAYER AND
HEAVIER PRECIPITATION AMOUNTS.

NWP GUIDANCE IS IN RATHER GOOD AGREEMENT WITH THE MAIN FEATURES
RELEVANT TO THIS FORECAST HOWEVER...SUCH A HIGH AMPLITUDE EVENT CAN
BE SIGNIFICANTLY IMPACTED BY THE MOST SUBLE VARIABLES. SO WHILE
CONFIDENCE IS ABOVE AVERAGE REGARDING THE OVERALL SCENARIO SEVERAL
FACTORS STILL MAKE US UNEASY REGARDING OVERALL ACCUMULATION TOTALS.
WITH THE LACK OF A WELL DEFINED SOURCE OF COLD AIR AND ANTECDENT
TEMPERATURES TODAY WARMING INTO THE LOWER TO MID 40S...THE
PRECIPITATION WILL START AS RAIN IN MOST LOCATIONS...EVEN NEAR THE
VA BORDER. BUT GIVEN IMPRESSIVE PRECIPITATION RATES...DIABATIC
COOLING FROM MELTING SHOULD COOL SURFACE TEMPERATURES TO AROUND
FREEZING AND ALLOW THE PRECIPITATION TO CHANGE OVER TO SNOW AND
BEGIN ACCUMULATING. THIS SCENARIO INHERENTLY CONTAINS SOME RISK FOR
A FORECAST BUST. IN ADDITION...THE HEAVY RATES AND SHORT DURATION OF
EVENT MEAN THAT EVERY HOUR COUNTS AND THAT A SLIGHT DELAY IN THE
COLD AIR OR A MIXTURE WILL HAVE A SIGNIFICANT IMPACT ON STORM
TOTALS.

WITH A FEW OF THE MAJOR CAVEATS NOTED...CONFIDENCE IS INCREASING IN
A MAJOR WINTER STORM WITH SIGNIFICANT WET SNOW OF 6 INCHES OR MORE
LIKELY TO FALL ACROSS MUCH OF CENTRAL NC INCLUDING THE RALEIGH AND
GREENSBORO METRO AREAS. THE GREATEST SNOW TOTALS ARE LIKELY TO FALL
IN THE REGION FROM RALEIGH NORTHEAST TO THE ROANOKE RAPIDS AREAS
WHERE LOCALIZED AMOUNTS APPROACHING 10 INCHES ARE POSSIBLE.
VERY
IMPRESSIVE SNOWFALL RATES ON THE ORDER OF 1 TO 2 INCHES PER HOUR
WILL ALLOW SNOW TOTOALS TO EXPLODE AFTER MIDNIGHT.

THE FORECAST IS ALSO DIFFICULT ACROSS THE SOUTHERN COASTAL
PLAIN...SOUTHERN SANDHILLS AND EVEN NEAR THE SC BORDER WHERE A WARM
NOSE IS EXPECTED TO BE SUFFICIENT TO CHANGE THE SNOW TO A MIXTURE OF
SNOW...SLEET AN FREEZING RAIN AROUND OR JUST AFTER MIDNIGHT. SOUTH
OF CLINTON...FAYETTEVILLE AND RAEFORD...SURFACE TEMPERATURES WONT
FALL BELOW FREEZING AND ANY SNOW ACCUMULATION WILL FALL IN A SHORT
WINDOW DURING THE LATE EVENING TO JUST AFTER MIDNIGHT WITH JUST A
SLOPPY WET SNOW OR RAIN EXPECTED AFTER 200 AM OR.

DRY SLOTTING WILL END THE SIGNIFICANT PRECIPITATION ACROSS THE
SOUTHERN PORTION OF THE CWA AFTER 3 TO 5 AM WITH THE MAIN AREA OF
PRECIPITATION CLOSER TO THE VA BORDER ENDING FROM WEST TO EAST
BETWEEN 5 AND 7AM.
ALL OF THE SIGNIFICANT PRECIPITATION WILL END BY
OR JUST AFTER DAYBREAK ON THURSDAY. TEMPERATURES AT THAT POINT WILL
HAVE REACHED THEIR COLDEST AND HAVE FALLEN TO THE 28 TO 32 RANGE.
SPOTTY FREEZING RAIN AND FREEZING DRIZZLE DRIVEN BY PERSISTENT
SHALLOW LOW LEVEL MOISTURE WILL CHANGE TO LIGHT FREEZING RAIN OR
MIST BY AFTERNOON. HIGHS WILL STRUGGLE TO CLIMB TO THE 33 TO 36
RANGE BY LATE AFTERNOON.

&&

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If you are in the GSP area and totals go up please post. 

Im still at 4-8" here in Rutherford County..

See the GSP snowfall map above.  I'm in that "tongue" SE of Greenville in NW Laurens County off the 418, north of 385, 10 miles south of Spartanburg County. 

 

Mine went from 3-7" to 6-10" this afternoon.  Convection playing a part?

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The 4 km NAM is adjusting NW, as well (not that that is a surprise). The surface low and heaviest precip are a good 50 miles west of 12z. 999 mb LP west of Waycross at hr 12. 998 mb LP just south of Emerald Isle at hw

I'm hoping that low tracks to the west of us. I would love to see the temperature shoot up to near 70 here and we get nailed with a squall line later like the 4K NAM is showing.
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Blacksburg in my opinion is too low on there forecasted amounts especially for the nc zones they are going to bust badly. I feel like they always do this and then screw themselves over.

Glad I'm not the only one who noticed this. I feel very confident that I'm going to get more than 3-5 inches. 

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Glad I'm not the only one who noticed this. I feel very confident that I'm going to get more than 3-5 inches.

Dude seriously, the nam and the almighty euro to everyone has you especially being creamed and it push the 6 inch totals up here on the 12z euro, the 18z nam just went bonkers and the rap and to an extent the hrrr has it decent. Sometimes they make me scratch my head. 3-5 is borderline dangerous to call for an area like you. Way too conservative.
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Dude seriously, the nam and the almighty euro to everyone has you especially being creamed and it push the 6 inch totals up here on the 12z euro, the 18z nam just went bonkers and the rap and to an extent the hrrr has it decent. Sometimes they make me scratch my head. 3-5 is borderline dangerous to call for an area like you. Way too conservative.

Yeah I have no idea what they are looking at right now.

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If you want to enjoy watching this unfold in NC it will take an all nighter. Exactly what I plan to do.

Yep naptime is over. Heading to High Point to my parents house shortly to set up shop. You will see me in the OBS thread until this thing ends. Going to be awesome. Cant wait to put the Tahoe in 4 wheel drive and drive around to look at High Point first thing tomorrow morning

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