The posts in this forum are NOT official forecast and should not be used as such. They are just the opinion of the poster and may or may not be backed by sound meteorological data. They are NOT endorsed by any professional institution or 
HouTXmetro wrote:ravyrn wrote:HouTXmetro wrote:Colder temps filtering into South Central Louisiana Faster than East Texas... Lafayette is already down to 48 while Lufkin, TX is at 54. To the West San Antonio down to 48 while Huntsville, TX is at 53. Is there a reason cold temps are filtering into other areas faster then East/SE TX? Same thing happened last event.
I could be completely wrong, but I think the Ouachita Mountains help hold the dense shallow cold air back acting like a dam which may have caused it to progress a little slower past the Arklatex region. I think earlier in this thread a while back someone said as much.
Well that makes perfect sense.
That is very true, with particularly shallow arctic air masses. The Quachita mountain range is one of very few mountain ranges in North America that are orientated East to West. They run from Pinnacle Mountain just outside Little Rock, Arkansas to the Winding Stair Mountain range, just Northwest of Talihina, Oklahoma. Several of the peaks in West-Central Arkansas and Eastern Oklahoma run in the 2,600 foot range. Thus, depending upon the trajectory of the shallow arctic air, the air mass has trouble traversing the mountains.
