A robust storm system that brought snow showers and even a dusting of snow to locations in California not accustomed to seeing the “white stuff”, such as the hills of San Francisco and
Hollywood is now ready to eject out of the southwestern U.S. and head for the Tennessee and
Ohio Valleys for Monday.
In its advance, an increasingly more moist and unstable atmosphere is developing across much of the Mississippi Valley east into the Tennessee and Ohio Valleys and the ingredients are coming together for a severe weather event that could be rather large in its coverage.
For Sunday night into the predawn hours of Monday, the severe weather will be confined west of the Tennessee Valley and will be impacting the Southern Plains, Mid-Mississippi Valley and Mid South. Through 7 am Monday, the Storm Prediction Center (SPC), has issued a “Moderate Risk”
for severe weather for the Missouri Bootheel, much of Arkansas and western Kentucky/Tennessee. The main threat of this severe weather will be damaging winds and hail with
some isolated tornadoes possible.
As the vigorous upper level support of this storm system moves into the Missouri Bootheel and the Ohio Valley, Monday, the emphasis of the severe weather will shift east-northeastward through the Tennessee Valley and into the Ohio Valley and Appalachians. Again, SPC has issued a rather large area of “Moderate Risk” for severe weather encompassing much of these areas. All
of northern Alabama and southern-middle Tennessee is included in this heightened risk area for severe weather.

For the Tennessee Valley, the expected time of arrival of the storms during the morning hours is
during a period typically not as favorable for severe storms; however, they can’t be completely ruled out.

The expectations with this event is that the surface pressure gradient will already be stiff in advance of the storms arrival and that will translate into strong southerly winds of 15 to 25
mph.. Mix in gusts from thunderstorms and winds could easily reach severe limits. This is what we currently believe will be the main threat through much of the morning hours, damaging wind gusts, with some hail possible, too. The threat for tornadoes is forecast to be “low”.
By midday, the axis of the storms will be shifting into the center of the Tennessee Valley and will be impacting the communities of Huntsville, Athens, Fayetteville and Decatur.

Because of the expected increasing instability that will be allowed to develop in advance of the storms, east of I-65, the threat for severe weather is expected to increase as the storms propagate eastward through the late morning hours and into the afternoon. The threat for a few isolated tornadoes will also increase a bit during the afternoon. This will mainly be confined for the southeastern portions of the Tennessee Valley (Marshall, Jackson and DeKalb Counties).

Stay weather aware, Monday, and be safe! A great way to stay weather aware for anywhere in the Tennessee Valley or the United States is with Storm Force 31 Weather Call. Click the link to learn more and to sign-up and register.

I will be posting occasional updates on my Facebook page and I invite you to follow me for the latest updates.
Tennessee Valley Day-By-Day Forecast
Monday
Cloudy with a line of thunderstorms pushing eastward through the Valley. Chance of precipitation (90%). Some thunderstorms could be strong to severe with gusty winds and some hail.
Storm Timing:
The Shoals, Red Bay, Waynesboro: 7 AM-11AM
Athens, Fayetteville, Huntsville, Decatur, Pulaski: 10AM-1PM
Scottsboro, Guntersville, Ft. Payne, Boaz, Chattanooga: Noon-3PM
Low: 63 High: 72 (Winds SSW shifting to NW 15-25)
Tuesday
Sunny and CoolerLow: 39 High: 62 (Winds NE 5)
Wednesday
Just a few afternoon clouds
Low: 37 High: 66 (Winds Light and Variable)
Thursday
Mostly Sunny
Low: 40 High: 69 (Winds S 5)
Friday
Variably Cloudy, Breezy and Mild with a Slight Chance for Showers (20%)
Low: 50 High: 70 (Wind S 10-15)
Saturday
Mostly Cloudy with a chance for strong thunderstorms (40%)
Low: 52 High: 72 (Wind SW to NW 10-15)
Sunday
Variably Cloudy with a few showers possible (20%)
Colder
Low: 38 High: 52 (Wind NNW 10-15)
Monday
Mostly Sunny
Low: 32 High: 56 (Wind SE 5)
Tuesday
Partly Cloudy
Low: 36 High: 62 (Wind S 5-10)
Thanks for reading,
“Doppler” Dale