This morning just felt bone chilling. My temp was 27 this morning and I believe it was the heaviest frost yet.
In Eastern St Tammany there was frost on the northern facing roofs until almost 10am this morning, by far the latest this season.
Same here. Our front yard is on the north side and is shaded in the winter during the mornings by our home and pine trees. It remained white till between 10 & 11 but that was also probably because of the cloud cover that moved in sooner here.
Post by thibodauxwx on Dec 26, 2013 9:37:55 GMT -6
From Larry Cosgrove on up coming weather: Larry Cosgrove This is a sequence of satellite images that show systems which will likely have major impacts on U.S. weather starting this weekend:
1) JMA MTSAT view shows a regrouping of the Madden-Julian Oscillation. As the thunderstorm groupings expand from Indonesia to the International dateline and just beyond, energy and moisture feed from the MJO will intensify the sub-Aleutian vortex (pumps up a ridge into western Canada and Alaska), setting up cold air drainage into the lower 48 states to the right of the Continental Dateline.
2) GOES WEST full disk shows an important storm with an equatorial connection (fed in part by the aforementioned MJO signal) southeast of Hawaii. Just as the intense Arctic chill reaches the U.S. next week this disturbance will be marching across northern Mexico into the Gulf Coast and then up and off of the Atlantic shoreline. It is a recipe for an important snow and ice event just after the New Year in portions of Dixie and perhaps snow in Appalachia and the Eastern Seaboard.
3) An equatorial wave over South America is a driver in the future development of an mAk vortex over the Grand Banks. Teleconnections on the linkage of the moisture stream to a vast oceanic low are very supportive of explosive cyclogenesis and sudden cold air drainage into the eastern half of the U.S., if this feature persists and grows over the next eight days.