MidAtlanticWeather Severe WX

Snow is falling rather moderately to sometimes heavy north and western regions! Reports in the far west and slightly elevated areas have 3-5". There appears to be a chance that grassy areas could have 1-2" where it is snowing moderately now!

 

When snow is moderate and heavy, slushy to snow covered roads have been reported! Stay safe. I can see the western edge of the precipitation on radar advancing eastward so things will likely end between 10 and 11 am.

 

There is an increased risk of light snow in the morning tomorrow as a southern weather disturbance passes through the area. The increased risk will be for areas where precip begins before sunrise. The reason for increasing the risk is the colder temperatures that are already in place as the area is under ideal radiational cooling. Best risk of light accumulations would be Virginia west of a Charlottesville to Roanoke line. I am not expecting more that a dusting to an inch in these areas, but roads could be cold making commutes rough. For the rest of the area, the risk is there that precip could start before dawn. If it does, allow extra time as small events like these are usually the roughest commutes! Once the sun is up, temps appear to rise to start melting and even could transition precip to rain in areas. IF precip begins before sunrise, the rise in temps could be slower.

 

Be careful!

 

Of note, we will have the coldest air of the season Sunday and Monday followed by a continues cooler than normal period. In the 7-10 day period there are signals of a potential significant winter storm!

 

All for now!
 

Already snowing in Southwestern VA and western NC. Expect up to an inch in most spots. In Southwestern 1-3" with isolated 4" amounts higher elevations seems possible. Best accumulations will be on car tops and grassy areas!

 

Snow chances best from Charlottesville to Fredericksburg to Salisbury and south. Best chance of Accumlations, 30 miles either side of a Dublin to Roanoke to Richmond line.

 

up to an inch possible.

 

1-3" Southwestern VA where snow started around sunrise!

 

All for now!
 

 

Hagerstown: 4-8”
Frederick, MD: 4-8”
Montgomery, MD: 5-9”
Baltimore: 6-10”
D.C: 6-10” (Maybe some sleet/rain at start)
Dulles: 4-8” (Maybe some sleet)
Fredericksburg: 6-10” (Maybe some sleet)
Salisbury: 1-3” then Rain
Richmond: 3-6” (Mixing with rain and sleet)
Williamsburg 1-3” (Mixing with sleet and rain)
Emporia: Mix then rain
VA Beach: Rain (Sorry stormy!  )
Martinsburg: 3-6” (Some Sleet)
Roanoke: 3-6”
Charlottesville: 4-8”
Leesburg: 4-8”

 

Heaviest snow arrives morning far SW

Late Morning Southwest

1-4 PM Richmod and Fredericksburg

5-8 PM DC and Baltmore

 

 

See Final Map at http://mawinterweather.blogspot.com

 

or

 

 

 

Great School in Northern Virginia. http://www.ambleside.org

SIGNIFICANT SNOWSTORM CONTINUES ON TRACK FOR THIS WEEKEND

 

What: All models are showing what should become a significant snow storm for the mid Atlantic Region this weekend.

 

When: Starting overnight Friday in the southwestern regions and spreading over the northern areas by late afternoon Saturday

 

How Much: Well, ranges in precip come in between 3-6” (Further South and west) and  4-8” (Further North and even east).. Some areas **COULD** see amounts in the 10” range.

Where:

I-95 areas and about 40 miles either side of it may be the jackpot areas until you get midway between Richmond and Fredericksburg, where you should pull the rain/snow line back west to western North Carolina.

Southeastern Virginia, from Just west of Richmond to Danville and the areas east should see a mix and the closer to the coast a changeover to rain. (Like Williamsburg to the Eastern Shore and Lower Southern Maryland)

 

This will be fine tuned… and I hope a map later tonight.

 

Amount Highlights:

Hagerstown: 3-6”

Frederick, MD: 3-6”

Montgomery, MD: 3-6”

Baltimore: 4-8”

D.C: 3-6” (Maybe some sleet/rain at start)

Dulles: 3-6” (Maybe some sleet)

Fredericksburg: 3-6” (Maybe some sleet)

Salisbury: 1-2” then Rain

Richmond: 1-2” (Mixing with rain and sleet)

Williamsburg 1-2” (Mixing with sleet and rain)

Emporia: Trace then rain

VA Beach: Few flakes then rain

Martinsburg: 3-6” (Some Sleet)

Roanoke: 3-6”

Charlottesville: 3-6”

Leesburg: 3-6”

 

Hopefully this gives you some idea of my thoughts!

 

 

Concerns:

1. System bombing out and timing will make all the difference! I am thinking Maryland near Baltimore could be closer to 10”+ amounts
2. The speed of movement is in question to an extent. Speed will make all the difference as well.
3. A dry slot could develop in areas which will drop amounts
4. time of day is not favorable for best accumulations.
5. Any convective activity will up amounts in some regions… yes… Thundersnow!
6. Still worried about a Southeastward shift in storm track. One of the latest models confirmed this concern.

 

All for now!

 www.midatlanticweather.com

 

SIGNIFICANT SNOWSTORM ON TRACK FOR THIS WEEKEND

 

What: All models are showing what should become a significant snow storm for the Mid Atlantic Region this weekend.

 

When: Starting overnight Friday in the southwestern regions and spreading over the northern areas by late afternoon Saturday

 

How Much: Well, ranges in precip come in between 3-5” for a large area with some higher spots likely seeing 4-8”. It does appear that there will be a sharp cut off on the western edge so the mountains and westward may really miss the heavier snows as well as the immediate piedmont areas of Western Maryland and Northern Virginia. Please note there could be some higher amounts within the jack pot areas as well. A lot to watch!

 

Where:

I-95 areas and about 30 miles either side of it may be the jackpot areas until you get just south of Richmond where you should pull the rain/snow line back west to western North Carolina.

Southeastern Virginia and the areas east of 30 miles or so east of I-95 should see a mix and the closer to the coast a changeover to rain.

Western and north of areas from Leesburg down to Charlottesville and then Southwestward towards Bristol could see a rapid drop off in snow amounts, but this is too detailed and could change

 

This will be fine tuned.

 

Concerns:

1. True model Consensus is not there yet.
2. Amounts will be hard to determine until the models handle some of the phasing of the systems better
3. Could see a further north and west pull of warm air if the system gets stronger, thus putting I-95 corridor in jeopardy of a changeover
4. There is also the possibility the storm stays further South and East which would limit Northern and Western area snows.. As noted, there could be a sharp cut off in snow to the west.

 

All for now!

 

Jimmy

http://www.midatlanticweather.com

 

Latest Models and trends show a moderate risk for a significant snow storm this weekend. This is the first model run to have consensus on the system, and there are many questions concerning the storm! I will do an official alert later tonight or early tomorrow morning. For now you can read the eveolution of this system at http://www.midatlanticweather.com/bb3/index.php?topic=1008.0

 

All for Now