Wednesday (High 46, Low 30): Mostly sunny. Breezy and seasonably cold.
Thursday (High 57, Low 31): Mostly sunny. Seasonably cold.
Friday (High 63, Low 44): Rainy and windy. Isolated thunderstorms are possible, and where they occur, could become strong.
Saturday (High 44, Low 25): Sunny.
Sunday (High 43, Low 22): Mostly sunny.
MLK Day (High 40, Low 27): Partly to mostly cloudy with a 40% chance of showers.
Tuesday (High 30, Low 15): Mostly sunny with a 20% chance of showers.
It would be a good time to review your Winter Weather Preparedness. Regardless of whether we see any wintry precipitation, next week does look like the coldest air so far this season, and some of the coldest in a few years maybe.
Here at 3:30 PM latest observations show overcast and windy conditions in Cullman, winds sustained from the West/Southwest at 15 miles per hour, with higher gusts to 23 mph still. The temperature is 43 degrees. The dewpoint is 36, the wet-bulb temperature is 40, and the relative humidity is 76%. Visibility hasn't always been the best on a day like today, but at the moment is 10 miles and has been for about the past hour. The pressure is 29.45 inches and rising. If you think that pressure is unusually low, you are right. This was a strong low pressure system, and that's why we've had these kinds of winds. We were fortunate to have stable air, or we would have dealt with similar issues to what South Alabama into Florida did last night into today, severe thunderstorms and tornadoes.
It is 43 degrees in Jasper under overcast skies. The dewpoint is 36, and the wet-bulb temperature is 40. So the relative humidity is 76% there too. Winds are West-Southwest at 14 mph, with higher gusts to 28 mph. The pressure is 29.50 inches and rising. Visibility is 10 miles.
And it is overcast and 39 degrees in Haleyville. The dewpoint is 32 degrees. The wet-bulb temperature is 36. The relative humidity is 75%. Winds are WSW at 16 mph, gusting to 24 mph. Visibility is 10 miles. The pressure is 29.49 inches and rising.
Well this post got majorly delayed. But at least now the rest of the 18Z GFS will be in. So when I was originally writing, you could see that the clouds were hanging around here, but the front and the Low and the storms had moved to the Mid-Atlantic, where they were continuing to have severe weather problems.
And now at 5:30, a few hours later, we still have some wraparound showers going on, more so up in Tennessee.
And some of it on the Tennessee side is falling as snowflakes. Not expecting any accumulations with these winds and the overall conditions, for most places, but parts of the Cumberland Plateau could see light amounts of generally under a half-inch.
And I actually just saw on social media where they've had some sleet in Hamilton, Alabama. But again, conditions are not right for any significant accumulation. Saw a note that the sleet was melting there in a few minutes. Anyway our weather tomorrow will be dominated by some high pressure in the Gulf of Mexico. And we could still be a little breezy tomorrow, winds could get up to about 15 miles per hour, but not windy like today and last night. I forget the exact location, but I saw last night where a tree fell on a mobile home in Cullman County and came close to hitting some people who were in bed, but ended up missing them. And the wind was roaring where I was sometimes. Probably had some gusts in the 40-50 mph range. Should have mostly sunny skies tomorrow, High near 45, Low near 30.
Then on Thursday the high pressure will shift East, and we will still have mostly sunny skies, a High in the mid, maybe upper 50's, so about 56. And the Low in about the 30-32 range.
Friday is our next day to really watch. Another strong low pressure system and front is coming into our region, and some of the rain may start Thursday night from it. The upper-level trough is going to be negatively titled, which is something we look for when considering how stormy the weather could get.
Looks like on Thursday the severe weather potential will stay to our South and West. But on Friday, it is a close call, how far North the unstable air can get to support any thunderstorms becoming severe. There is plenty of wind shear and a great source of lift, the other two ingredients we'd need for severe weather. Most of the threat may stay focused on Central and South Alabama, also into Mississippi, Georgia, and up into the Carolinas. But those of us in North Alabama need to keep an eye on how things trend between now and then. We can have severe weather this time of the year and really any time of the year. We had some this past summer that was more organized than usual. This time of year, usually if we see any surface-based instability with a setup like this, there are going to be some problems.