Continued Clearing & A Chilly Night - KALB-TV News Channel 5 & CBS 2

Continued Clearing & A Chilly Night

Posted: Updated:

Monday, December 17

12:30pm

Overview
Cold front continues to push toward the Eastern Seaboard as an associated Low Pressure System moves into the NE U.S. In the wake of this front, a ridge of high pressure will move into the area and covering most of the Eastern Half of the nation. There is also a secondary (developing) Low Pressure that will be our next weather maker during the mid-week.

Discussion
A dry and cool pacific air mass will move into the area today, behind a broad frontal boundary with pleasant conditions expected for a short time. So, expect continued clearing throughout central Louisiana in the wake of a system that is pushing through the mid-Mississippi River Valley. This pacific air mass will be short lived as the Surface Ridge quickly exits East on Tuesday. As the ridge moves out, return flow will get under way by Tuesday morning, providing a southerly flow.

For the rest of the day,
Highs are expected to reach the mid 60-s and lower 70-s with mostly clear skies for the rest of the day and overnight. Winds will be moderate and gusty this afternoon with calming winds overnight, due to a ridge of high pressure. This ridge will move out rather quickly, later this week.
 
For the rest of the 7day planner
A system currently entering the Pacific Northwest will move across the Rockies with a Low Pressure forming on the Lee of the mountains, ahead of the upper level disturbance. This is a common occurrence known as "Lee Cyclogenesis".
This just means that the Low Pressure will re-develop and intensify before moving in our direction.
As this low pressure deepens on Wednesday, South winds will strengthen and Gulf moisture will be drawn to the North. We will see a good chance for showers and thunderstorms from this mid-week front. This "Re-enforcing Cold Front" Will knock temperatures 5-10 degrees below normal and in to the lower to mid 30's for lows.
 
TODAY...Expect some patchy fog (burning off by 10am). Otherwise, clearing skies today and seasonably warm conditions. Highs 67-73. Southwest winds 5-15mph, becoming calm.

MONDAY NIGHT...Clear skies and chilly. Lows 38-44. Light & Variable winds.

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