From the ABC 7 Weather team

Archive for category Weekend November 2014

A Cold Wet Rain Could End as Snow on Monday

November 14, 2014 - 12:46 PM
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If you didn’t think the cold weather was here with yesterday’s daytime high temperatures topping out in the 40s, I am sure you were reminded how winter has paid us an early visit with the first flakes of the season Thursday evening. Not everybody saw the light flurries; some people experienced some sleet as well! Any precipitation last night quickly changed to rain but it was a reminder that this forecast is more reminiscent of a December or January forecast as opposed to a mid-November forecast. Either way, we will have yet another reminder of winter paying us an early visit as we start off the next work week.

Winds will continue to die down through the evening so we are expecting light winds during the overnight. Light winds and clear skies means those temperatures are going to drop.

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Caption: Overnight lows Friday overnight

We will start off on the chilly side on Saturday as arctic high pressure builds right overhead. Temperatures will manage to make it into the low to mid 40s. So if you are headed to College Park on Saturday night, watch for temperatures falling through the lower 30s during the Maryland/Michigan State game. Clouds will increase on Sunday ahead of our next system with temperatures warming to around 50 degrees! That means we are looking good for the Redskins vs. Tampa Bay game at Fed Ex – just some clouds but remaining dry.

After midnight on Sunday, all bets are off. An area of low pressure will move out of the Gulf of Mexico and to the northeast along a cold front. It will gain some energy from a few disturbances moving out of the Great Lakes region as well as the Midwest.

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We could see a little wintry mix at the onset after midnight on Sunday well north and west of D.C. but this is mainly going to be a cold rain event for the WJLA viewing area all day on Monday with the influence of warm air at all levels of the atmosphere. And FYI, it will most likely rain both during the morning AND evening commutes.

 

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Caption: Monday afternoon, snow stays well west with rain (green) around the region.

As that low moves off the coast into the evening hours, there is a chance the rain could quickly change to some light snow as cold air surges in from the west. Not expecting any accumulation around the D.C. area as that low will quickly move to the north and east, taking the precipitation with it.
After the precip moves out Monday night, another arctic high pressure will move in advancing even colder air into the region. Daytime highs on Tuesday and Wednesday may not make it out of the 30s!

Good news is, the Climate Prediction Center has our temperatures moving back towards normal (mid to upper 50s) by Thanksgiving week so there is an end in sight!

 

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First Freeze of the Season Possible Sunday Night

November 1, 2014 - 05:12 PM
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A deep trough over the eastern U.S. has brought colder than average temperatures for the first of November.  In fact, some folks in the Carolina's had their first snow of the season!  Check out this view in South Carolina earlier today:

 

No snow for us, but gusty winds will be the main story. The deepening low off the Carolina coast will ride north increasing our winds speeds.  Winds may gust between 30 and 40 mph through tomorrow late morning.  Air temperatures overnight will remain above freezing, but wind chill values will be at or below freezing, especially west of the city.  Here are simulated wind chills tomorrow morning:

As the low pulls farther northeast tomorrow, sunshine will return, but temperatures will only reach the upper 40s.  Keep in mind, winds will still be gusting to around 30mph through the afternoon keeping wind chills in the upper 30s to low 40s.

Winds will subside late Sunday and temperatures will tumble.  Here is a look at the forecast low temperatures by Monday morning.

D.C. will likely remain a few degrees above freezing; however, the growing season will likely end for folks west of the city with below freezing temperatures.

Fortunately, the cold snap will be short lived.  Highs by Monday afternoon will rebound to 60 degrees.

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