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December 29-30 storm.


stormtracker

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  On 12/28/2012 at 7:31 PM, mattmfm said:

DT was mean to me on fb :( Guess we'll never know why his map was so outside sensibility. The need for attention can do that, I suppose.

FB is the wrong venue for dissenting views. Page patrons are fanboys

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URGENT - WINTER WEATHER MESSAGE

NATIONAL WEATHER SERVICE BLACKSBURG VA

238 PM EST FRI DEC 28 2012

...WINTRY WEATHER TO RETURN OVERNIGHT INTO SATURDAY...

.A COMPLEX AREA OF LOW PRESSURE WILL TRACK RAPIDLY NORTHEAST INTO

THE AREA LATE TONIGHT BEFORE PASSING OFFSHORE BY SATURDAY

AFTERNOON. MOISTURE ASSOCIATED WITH THIS SYSTEM WILL INTERACT WITH

COLD AIR IN PLACE TO PRODUCE A MIXTURE OF WINTRY WEATHER THIS

EVENING INTO SATURDAY.

VAZ022>024-291000-

/O.EXA.KRNK.WW.Y.0019.121229T0200Z-121229T2100Z/

ROANOKE-BOTETOURT-ROCKBRIDGE-

INCLUDING THE CITIES OF...ROANOKE...SALEM...FINCASTLE...

LEXINGTON...BUENA VISTA

238 PM EST FRI DEC 28 2012

...WINTER WEATHER ADVISORY IN EFFECT FROM 9 PM THIS EVENING TO

4 PM EST SATURDAY...

THE NATIONAL WEATHER SERVICE IN BLACKSBURG HAS ISSUED A WINTER

WEATHER ADVISORY FOR SNOW AND SLEET...WHICH IS IN EFFECT FROM 9

PM THIS EVENING TO 4 PM EST SATURDAY.

* LOCATIONS...ROANOKE...BOTETOURT...AND ROCKBRIDGE COUNTY.

* HAZARD TYPES...WET SNOW AND SLEET...POSSIBLY MIXED WITH A LITTLE

FREEZING RAIN.

* ACCUMULATIONS...SNOW ACCUMULATION 2 TO 4 INCHES...MAXIMIZED

ACROSS HIGHER TERRAIN..ESPECIALLY IN BOTETOURT AND ROCKBRIDGE

COUNTY.

* TIMING...LATE THIS EVENING INTO SATURDAY MORNING.

* IMPACTS...HAZARDOUS TRAVEL CONDITIONS DEVELOPING OVERNIGHT.

* TEMPERATURES...IN THE UPPER 20S TO LOWER 30S.

PRECAUTIONARY/PREPAREDNESS ACTIONS...

A WINTER WEATHER ADVISORY MEANS THAT PERIODS OF SNOW...SLEET...OR

FREEZING RAIN WILL CAUSE TRAVEL DIFFICULTIES. BE PREPARED FOR

SLIPPERY ROADS AND LIMITED VISIBILITIES...AND USE CAUTION WHILE

DRIVING.

&&

$$

Blacksburg is really gung ho on this event. Couldn't be coming in at a better time for accumulations.

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  On 12/28/2012 at 7:56 PM, Buddy1987 said:

Blacksburg is really gung ho on this event. Couldn't be coming in at a better time for accumulations.

Glad to see they are a little bullish this time. I usually find them fairly conservative in their forecasts.

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  On 12/28/2012 at 8:04 PM, Disc said:

Glad to see they are a little bullish this time. I usually find them fairly conservative in their forecasts.

I take that back. Their snow map is more conservative than the wording in their WWA. Regardless, anything over an inch out of this storm is a win for me.

active_STS.png

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  On 12/28/2012 at 8:06 PM, zwyts said:

it's been active...just an early afternoon lull

I mean we could talk about the 18z NAM which is hilariously snow-holing us and delaying the start time by 4 hours, but is at least colder...

It splits the precip between the two areas of low pressure. That would be a major screwjob.

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  On 12/28/2012 at 8:15 PM, PhineasC said:

It splits the precip between the two areas of low pressure. That would be a major screwjob.

Not being a weenie, but looking at radar its really impressive and the southern low is stronger, so I'd favor the colder solution. The wv does show solid digging bringing in all the moisture. NAM is off its rocker I'd say.

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  On 12/28/2012 at 8:15 PM, PhineasC said:

It splits the precip between the two areas of low pressure. That would be a major screwjob.

saw that, but surface readings show the southern Low is much stronger and getting stronger

Current Pressures

http://weather.unisys.com/surface/sfc_con.php?image=pr&inv=0&t=cur

3 hr changes

http://weather.unisys.com/surface/sfc_con.php?image=3p&inv=0&t=cur

if you go back several hours from the current pressure map the deepening of the southern Low is even more impressive

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  On 12/28/2012 at 8:21 PM, Amped said:

It's the cold sector that counts, not the warm sector. I don't care how hard it's raining in Alabama.

Yeah and sometimes that stuff can moisture rob. Radar looks decent tho.

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