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02/21/20 Snow Potential


NorthArlington101
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5 minutes ago, Deer Whisperer said:

looks like it went a bit south. welp

Yeah, probably about a ~20-30 mile jump south. Would just be noise if some of us in Central VA didn't need every mile.

it actually bumped the heavy stuff a hair more north, but it's a pretty strong cutoff. still close...

1582264800-1cYGYmdLVPs.png

I can hear DT honking from my house

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Nobody from OBX to Raleigh is seeing more than 4 or 5 inches. Those snow maps are absurd. Has me getting 12in or more. Never going to happen. It is interesting though the light showers that we've had on and off today in North Eastern North Carolina have contained sleet pellets. Shows you it's getting colder on top.

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3 minutes ago, losetoa6 said:

Idk . I'm betting many  areas in the higher qpf zones just away from the beaches see 6"+ easy with lollies of 8" +. Most snow will be falling after dark with surface 30-34 range dropping a bit overnight and good rates and banding features most likely . Not to mention 10 hours or more duration for many . Good luck and enjoy!

The only thing showing that at this point anymore is the NAMs...we'll see.

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1 hour ago, BaltimoreWxGuy said:

DT messaged me on Facebook because I told him I thought he’s basing his forecast off the NAM. We’re currently having a back and forth on Facebook messenger lol

I don’t remember very positive things towards our new stations last December, (no one in particular if i remember correctly, just them in general) because none of the models were getting anything right, but the NAM did, and the news stations kept bumping up their totals as the night went on. Afterwards they apologized multiple times, and it was just... I’m sure he loves the NAM.

Edit: Already going after them...

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1 minute ago, losetoa6 said:

Sure do and the trend has been obvious.  The globals esp the Euro was way too dry and suppressed even 36 hrs ago . Even the Gfs was too dry.  Timing looks good.  Qpf looks juicy . Good banding looks to develope.  Surface 30-34 should be easily overcome imo. I fully expect a large area of 3-6" with lollies of 8" maybe 10". But hey..I'm just tracking from afar for fun. 

I can’t disagree more. It’s a weak system. And the temps are marginal. A general 1-4” is the best call and that’s what the NWS and most outlets are going with. Maybe if EVERYTHING goes right a few lucky spots get 6” but you’re basing everything on the NAM 

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18 minutes ago, losetoa6 said:

850 mb frontogen really jumped up this run on the 3k in E. NC   ...I'm sure that's not a coincidence that 1 hour snowfall rates are 1.5 inch + in spots there . Also 1" + in SE  VA . 

From Met ILMross in SE Forum...he's thinking along the same lines

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WSWs now up for SE VA and NE NC.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Wakefield VA
336 AM EST Thu Feb 20 2020

NCZ012>016-030>032-VAZ096-097-201645-
/O.UPG.KAKQ.WS.A.0001.200220T2000Z-200221T1200Z/
/O.NEW.KAKQ.WS.W.0001.200220T2000Z-200221T1200Z/
Northampton-Hertford-Gates-Pasquotank-Camden-Bertie-Chowan-
Perquimans-Suffolk-Chesapeake-
Including the cities of Margarettsville, Ahoskie, Corapeake,
Elizabeth City, Horseshoe, Lilly, Sharon, Quitsna, Edenhouse,
Merry Hill, Midway, Windsor, Cape Colony, Edenton, Hancock,
Macedonia, Mavaton, Saint Johns, Valhalla, Jacocks, Woodville,
Chuckatuck, Cleopus, Crittenden, Deanes, Downtown Suffolk,
Driver, Elwood, Mount Pleasant, Bowers Hill, Chesapeake Airport,
Deep Creek, Fentress, Great Bridge, and Greenbrier
336 AM EST Thu Feb 20 2020

...WINTER STORM WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO
7 AM EST FRIDAY...

* WHAT...Mixed rain and snow, changing to snow. Snow may be heavy
  at times tonight. Total snow accumulations of 3 to 6 inches.
  Locally higher amounts are possible. Wind gusst up to 30 mph.

* WHERE...Portions of southeast Virginia and northeast North
  Carolina.

* WHEN...From 3 PM this afternoon to 7 AM EST Friday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Wakefield VA
336 AM EST Thu Feb 20 2020

NCZ017-VAZ087>090-092-093-095-098-523>525-201645-
/O.UPG.KAKQ.WS.A.0001.200220T2000Z-200221T1200Z/
/O.NEW.KAKQ.WS.W.0001.200220T2000Z-200221T1200Z/
Western Currituck-Greensville-Sussex-Surry-James City-Southampton-
Isle of Wight-Norfolk/Portsmouth-Virginia Beach-York-Newport News-
Hampton/Poquoson-
Including the cities of Knotts Island, Emporia, Wakefield,
Barham, Gwaltney Corner, Bacons Castle, Chippokes State Park,
Hog Island Game Reserve, Poolesville, Booth Fork, Williamsburg,
Franklin, Carrsville, Lees Mill, Benns Church, Bethel Church,
Carrollton, Lawson, Longview, Downtown Norfolk, Ghent,
Norfolk International Arpt, Norfolk NAS, Norview, Ocean View,
Wards Corner, Back Bay, Bayside, Cape Henry, Dam Neck,
Gallups Corner, Kempsville, London Bridge, Grafton, Tabb,
Beaconsdale, Denbigh, Fort Eustis, Hilton Village, Lee Hall,
Menchville, Newport News, Buckroe Beach, Fort Monroe, Fox Hill,
Grand View, Hallwood, Hampton, and Langley AFB
336 AM EST Thu Feb 20 2020

...WINTER STORM WARNING IN EFFECT FROM 3 PM THIS AFTERNOON TO
7 AM EST FRIDAY...

* WHAT...Mixed rain and snow, changing to all snow. Snow may be
  moderate to heavy at times this evening. Total snow
  accumulations of 2 to 4 inches. Winds gusting as high as 40 mph.

* WHERE...Portions of southeast Virginia and northeast North
  Carolina.

* WHEN...From 3 PM this afternoon to 7 AM EST Friday.

URGENT - WINTER WEATHER MESSAGE
National Weather Service Newport/Morehead City NC
402 AM EST Thu Feb 20 2020

...WINTER STORM WILL BRING ACCUMULATING SNOWFALL TO THE AREA
TONIGHT INTO FRIDAY MORNING...

.Rain through much of the day will transition to snow from
northwest to southeast between this evening and early tonight.
Snow will be heavy at times overnight with the highest snow totals
across the northern half of Eastern NC. Snow will taper off
Friday morning, with gusty winds continuing through the day.

NCZ046-081-202115-
/O.UPG.KMHX.WS.A.0001.200221T0000Z-200221T1200Z/
/O.NEW.KMHX.WS.W.0001.200221T0000Z-200221T1500Z/
Tyrrell-Mainland Hyde-
Including the cities of Columbia, Gum Neck, Engelhard, Fairfield,
Ponzer, Scranton, and Swanquarter
402 AM EST Thu Feb 20 2020

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO 10 AM
EST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 3 to 5
  inches. Winds gusting as high as 35 mph.

* WHERE...Tyrrell and Mainland Hyde Counties.

* WHEN...From 7 PM this evening to 10 AM EST Friday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Newport/Morehead City NC
402 AM EST Thu Feb 20 2020

...WINTER STORM WILL BRING ACCUMULATING SNOWFALL TO THE AREA
TONIGHT INTO FRIDAY MORNING...

.Rain through much of the day will transition to snow from
northwest to southeast between this evening and early tonight.
Snow will be heavy at times overnight with the highest snow totals
across the northern half of Eastern NC. Snow will taper off
Friday morning, with gusty winds continuing through the day.

NCZ029-044-045-079-080-091-193-202115-
/O.UPG.KMHX.WS.A.0001.200221T0000Z-200221T1200Z/
/O.NEW.KMHX.WS.W.0001.200220T2100Z-200221T1500Z/
Martin-Pitt-Washington-Greene-Beaufort-Lenoir-Northern Craven-
Including the cities of Williamston, Robersonville, Oak City,
Jamesville, Greenville, Bethel, Farmville, Grifton, Grimesland,
Plymouth, Roper, Creswell, Snow Hill, Hookerton, Walstonburg,
Washington, Chocowinity, Belhaven, Bath, Aurora, Kinston,
La Grange, Pink Hill, Vanceboro, Ernul, Dover, and Cove City
402 AM EST Thu Feb 20 2020

...WINTER STORM WARNING IN EFFECT FROM 4 PM THIS AFTERNOON TO
10 AM EST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 4 to 6
  inches.

* WHERE...Martin, Pitt, Washington, Greene, Beaufort, Lenoir and
  Northern Craven Counties.

* WHEN...From 4 PM this afternoon to 10 AM EST Friday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Newport/Morehead City NC
402 AM EST Thu Feb 20 2020

...WINTER STORM WILL BRING ACCUMULATING SNOWFALL TO THE AREA
TONIGHT INTO FRIDAY MORNING...

.Rain through much of the day will transition to snow from
northwest to southeast between this evening and early tonight.
Snow will be heavy at times overnight with the highest snow totals
across the northern half of Eastern NC. Snow will taper off
Friday morning, with gusty winds continuing through the day.

NCZ047-202115-
/O.UPG.KMHX.WW.Y.0001.200221T0500Z-200221T1200Z/
/O.NEW.KMHX.WS.W.0001.200221T0000Z-200221T1500Z/
Mainland Dare-
Including the cities of Manns Harbor, Stumpy Point, and East Lake
402 AM EST Thu Feb 20 2020

...WINTER STORM WARNING IN EFFECT FROM 7 PM THIS EVENING TO 10 AM
EST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 2 to 4
  inches. Winds gusting as high as 40 mph.

* WHERE...Mainland Dare County.

* WHEN...From 7 PM this evening to 10 AM EST Friday.


URGENT - WINTER WEATHER MESSAGE
National Weather Service Raleigh NC
340 AM EST Thu Feb 20 2020

...Accumulating snow is likely across much of central North
Carolina today and tonight...

.Precipitation will overspread the area from the southwest early
today. While the precipitation will initially be all rain, a
transition to a wintry mix or a mix of rain and snow is expected
during the afternoon. A transition to all snow from north to south
is expected thereafter.

NCZ009>011-026>028-043-078-202045-
/O.UPG.KRAH.WW.Y.0001.200220T1500Z-200221T1200Z/
/O.NEW.KRAH.WS.W.0001.200220T1500Z-200221T1200Z/
Vance-Warren-Halifax-Franklin-Nash-Edgecombe-Wilson-Wayne-
Including the cities of Henderson, Kittrell, Warrenton, Norlina,
Roanoke Rapids, Enfield, Scotland Neck, Louisburg, Franklinton,
Nashville, Spring Hope, Rocky Mount, Tarboro, Princeville,
Wilson, and Goldsboro
340 AM EST Thu Feb 20 2020

...WINTER STORM WARNING IN EFFECT FROM 10 AM THIS MORNING TO 7 AM
EST FRIDAY...

* WHAT...Heavy snow expected. Total snow accumulations of 2 to 4
  inches.

* WHERE...Northern and Central Coastal Plain counties of North
  Carolina.

* WHEN...From 10 AM this morning to 7 AM EST Friday.


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Looking at the latest Mesos (3K, 12K Nams) we are seeing slightly less dig from the shortwave. This is resulting less of a southerly component to the winds at 700 mbs and up which is what is driving the moisture over the colder air. You can see the results if you look at the FGEN maps as that has weakened. Hence we see a contraction southward of the precip as well as a reduction on snow totals. One thing to keep an eye on is to see how much dig we do in fact see with the SW at both 700 mbs and 500 mbs. More dig = more snow and farther north.

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