Midweek Weather briefing: Cold weather will continue and intensify over next several days...

Good Wednesday to everyone, a cold weather pattern has locked in across the Southeast US here for this last full week of 2017.

 

This morning as you get out there are a few clouds blanketed across the Foothills and Western Piedmont, that is due to a weak disturbance  sliding across the Southeast. As the disturbance moves past our region it will take the clouds with it meaning we should be more sunshine as the day progresses. High’s for today will top out in the low 40’s.

 

Skies will be clear early on this evening but could increase again late keeping overnight temperatures in the mid to upper 20’s. For Thursday we’ll have two features in play in our split-flow regime. A strong 1040 mb high will be in place from Ontario and wedging through the northeast and down the east.


 GFS Surface Map (7 am Thursday morning)

GFS Surface Map (7 am Thursday morning)

 

That high will deliver a fresh delivery of cold air. Meanwhile another southern stream disturbance will help spread varying amounts of cloud cover. The combination is going to result in a cold day high’s trimmed off several degrees from today’s values…likely remaining in the 30’s on Thursday.

 

As you can see this a very repetitive weather pattern and it will continue going into the upcoming holiday weekend. Friday, Saturday and Sunday both will feature continued below normal temps (40’s daytime, 20’s at night) thanks in part to the combination of cold arctic air plus times of enhanced mid to high level clouds.

 

In terms of getting wintry precip into the area, it appears at this time that northern steam energy will be a primary player in the weather pattern helping suppress moisture at this time. We’ll continue to monitor it and will make any chances necessary as the week progresses.

 

Monday begins the New Year and could herald in the coldest airmass yet of the winter as the northern stream remains dominant. High’s Monday will be in the 30’s but the timing of the next invasion of cold it should place itself into the region starting Monday night and going at least through the end of the forecast period.

 

This could potentially lead to an extended time frame of temperatures well below the freezing mark. Right now would be a good opportunity to tidy up those chores and prepare for the upcoming cold.

 

Have a great day!

 

 

Daniel Crawley

Foothills Weather Network