By Jim Stefkovich, Meteorologist, Alabama Emergency Management Agency
CLANTON – 230 pm, January 18, 2019
Almost all of Alabama is under a threat of severe weather Saturday as a line of storms moves through. Timing of the line is included in the graphic above. Straight-line winds are the main threat, but a couple of tornadoes are also possible. In addition, south winds of 15-25 mph with gusts around 30 mph will occur ahead of the line of storms.
There is still a question about the amount of atmospheric instability Saturday. Enough is in place for severe straight-line winds, and if more instability develops, there would likely be supercell development and increased tornadic activity.
A total of 1-2 inches of rains is anticipated, and some snow showers/snow flurries may occur between 12 am – 9 am Sunday mainly north of I20 before the precipitation ends. Accumulations are not expected. However, where standing water occurs, there could be potential icy spots Sunday, especially on bridges.
Temperatures will remain in the 30s north of I20 on Sunday and far north Alabama may not get above freezing. Winds statewide will be northwest at 10-20 mph with higher gusts. This will produce wind chills in the teens to middle 20s most of the day. Low temperatures by Monday morning will range 20-25 north of Hwy 80-I85 with freezing temperatures all the way to the coast.
Another system has the potential to bring winter precipitation across the northern half of the state Wednesday into Thursday and will be monitored closely.