From the ABC 7 Weather team

Spring Swings and Storms

March 12, 2014 - 04:47 AM
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Wild temperature changes and a few strong storms coming.

March roared in like a lion with our winter snow storm just a week ago, and now we are finally seeing those warm spring temperatures.  We hit 60 degrees or better the last 3 out of 4 days. Today will top the 60 degree mark as well. The wild roller coaster of temperatures continues this week.

 

(This week's temps)

Thanks to Brian Van de Graff for the nice graphic.  Whenever we get such dramatic changes in temperatures we have to start looking at other things in the atmosphere that could trigger severe thunderstorms. If you live in Virginia, you may have heard the tornado sirens going off Tuesday morning.  It was part of a statewide drill to help everyone prepare and plan for spring storms. More in Eileen's blog from yesterday.  There is a slight chance that those sirens will go off for real later today as a strong line of thunderstorms moves through the Mid-Atlantic. 


(Wednesday Afternoon)

The Storm Prediction Center has highlighted our area for the possible threat of damaging winds associated with those storms this afternoon/evening. An isolated tornado cannot be ruled out either.  Between 4 p.m. and 8 p.m. is the most likely time for severe storms.

(Severe Weather Outlook - Storm Prediction Center)

An intense area of low pressure will move just to our north, and will help draw very warm air ahead of it and very cold air in behind it.  Today in the warm sector, our high temperatures will be in the mid 60s to lower 70s.

(Forecast Highs Today)

On the flip side, temperatures drop more than 40 degrees after the front passes with Thursday morning lows in the 20s.  D.C. will only warm into the mid 30s on Thursday afternoon, but winds will make it feel like 20s most of the day.

(European Computer Model Temperatures)

Winds will be strong out of the Northwest tonight and Thursday and gusts may reach 40mph, possibly more in the Potomac Highlands. This may result in minor tree damage, and you definitely want to bring the kids toys indoors and any lightweight lawn furniture you may have been enjoying the past few days. A wind advisory is in effect from 6pm until 11am on Thursday.

(Futurecast Winds)

Thankfully, it will be a quick hit of cold, and we will start recovering already on Friday with highs back into the 50s.

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