HUNTSVILLE, Ala. – The risk of severe storms has ended in the Tennessee Valley.
The National Weather Service has expired the tornado watch which had been in effect until 6 p.m. Wednesday.
This is an archived live blog. Updates from our team appear below in the order they occurred.
OHX issues Severe Thunderstorm Warning [wind: 60 MPH, hail: 0.75 IN] for Lawrence, Wayne [TN] till 11:00 AM CST
Here is a technical discussion from the Storm Prediction Center. There is an 80 percent chance of a tornado watch being issued before Noon.
DISCUSSION...Mid-level southwesterly flow along a cold front in middle/western TN has slowed the southeastward movement of the front. A line of convection along/just ahead of the front has displayed some strong to damaging wind threat over the past several hours. The airmass across northern MS/AL ahead of the will continue to destabilize through the afternoon even with partly to mostly cloudy skies present. Steep mid-level lapse rates with an elevated mixed layer are present on the 12Z Jackson, MS sounding and sufficient low-level moisture across the area will support MLCAPE of 500-1000 J/kg this afternoon. 50-60 kt of effective bulk shear will support supercell structures both within and ahead of the line, particularly across northern MS into northern/central AL where semi-discrete convection is already developing as of 16Z. Although low-level flow is veered generally to southwesterly, sufficient curvature in the 0-3 km layer will support effective SRH around 250-300 m2/s2, which suggests at least some tornado threat will likely develop. Large hail will able be possible with the initial discrete convection, with damaging winds becoming more probable with time as thunderstorms congeal into a line.
Madison County and Morgan County schools have just announced early dismissals. Get the running list here: http://whnt.com/2017/02/28/school-closings-and-delays-for-wednesday-february-29/
OHX continues Severe Thunderstorm Warning [wind: 60 MPH, hail: <.75 IN] for Lawrence, Wayne [TN] till 11:00 AM CST
Limestone County Schools dismissing right now. Car riders are being dismissed immediately. Bus riders will be dismissed as soon as buses arrive.
HUN issues Severe Thunderstorm Warning [wind: 60 MPH, hail: 0.88 IN] for Lauderdale [AL] till 11:30 AM CST
11:19am: Emergency Manager reporting pea-sized hail in Leoma, TN
NWS Huntsville tells us to expect a Tornado Watch soon; details/counties coming ASAP.
Severe T’Storm Warning for northern Madison County until 1:15pm.
Branden Fortier in Hazel Green