From the ABC 7 Weather team

Biggest Snow of the Season Tuesday

January 20, 2014 - 10:23 AM
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Prepare for a messy Tuesday evening commute with some of the highest snow totals we've seen this season. 

Follow Lauryn on Facebook and Twitter (as well as the StormWatch7 Page) for continuous information!

Update: 8:30AM - Of course now expecting more as the snow begins to move into the region.....tune in to our StormWatch 7 Radar - Right now in terms of accumulations we are expecting -

<dl class="story-art width606 left"><dt><img src="http://images.tbd.com/weather/daypic(29).jpg" alt="ZZZZZ" /></dt></dl>

 

There could be upwards of 10" towards the PA line, less south of the DC metro area.

 

Also - Wind Chill Advisories begin tonight!

<dl class="story-art width606 left"><dt><img src="http://images.tbd.com/weather/watches-warnings.jpg" alt="ZZZZZ" /></dt></dl>

 

This will move on out of here by the time we head into the late evening hours - 10PM

 

 

Today: I guess you could call it the calm before the storm. A very mild day out there today as temperatures rise into the upper 40s/low 50s! This will be well above our average temperature of 43 degrees! Then we head into tomorrow. That’s when we will face some problems, snow problems.

A Winter Storm Warning has been posted for the entire region beginning early tomorrow morning and continuing through tomorrow evening.

ZZZZZ


There is a good chance that we could see some accumulating snow for everybody around the region and probably the best chance we have seen yet this winter. So what is going on?

Another piece of energy moving in from Canada (remember the “clippers”) will head southeast today out of the northern plains and through the Ohio Valley. While this is going on, a frontal system will drop through the region crossing the area tonight. The piece of energy slipping into the region will join with the front and eventually cause an area of low pressure to form off the coast along the front through the day tomorrow. That low will move northeast, just off of the east coast line.


Lows tonight will drop into the 20s and then pretty much stay in the 20s (below freezing) for tomorrow. Therefore, there is no question that the snow will stick. Snow will begin to impact the region starting early tomorrow morning from the west (most likely around 7AM). The snow will continue to spread eastward and reach the DC metro area anywhere from 9AM-11AM. At this point, current thinking is anywhere from 3”-5” of snow around the area with some locally higher amounts (these could be subject to change). Since it will be fairly dry, the snow will be of the fluffy nature which can tend to pile up quickly.

This graphic below the percentages (on the left) that we could see at least 4.00” of snow across the region. Mostly about a 60% shot. We do believe that it will be slightly more in total accumulation (3”-6”) to the north and west and then also more south and east of the DC area once the storm forms off the coast (4”-8”).

Weather Prediction Center

Not only are we worrying about the snow falling, we are going to have some breezy conditions through the day tomorrow. Northwest winds anywhere from 10-20 mph with bring wind chills down into the single digits, mainly for the afternoon hours. This will also cause blowing snow around the region as the heaviest of snow will fall during the afternoon hours. Snow will come to an end by the time we head into Tuesday night but winds will stay put at least through the first part of Wednesday dropping wind chills Wednesday morning to below zero.


Tomorrow morning will not be quite as bad as tomorrow afternoon so even with that being said, I do believe there will be some cancellations for schools and office buildings. Keep it here as we continue to tweak the ongoing forecast, but for the most part-get prepared to see some snow!

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