NWS Update: Storms are expected after dark and in the early morning hours Saturday.
Have multiple ways to receive warnings while you sleep.
Main threats: Damaging winds, tornadoes, and hail. Brief heavy rainfall is
expected, but flooding is unlikely.
• Timing: Late Friday night through Saturday morning
• Wind Advisory in effect Friday night for widespread gusty winds up to 40 mph
A tornado watch has been issued through 2 am on Saturday. This is not the main line we have been talking about! You may not see storms during this time period, this is for storms that could form out a head of the front. It is still important to have multiple ways to receive warnings, and something that can wake you up, as the main line is still expected during the overnight hours. Please continue to stay weather aware!
Key Forecast Points:
Impacts: Isolated storms ahead of the main line of storms could pose a risk of strong
tornadoes and large hail. This threat is mainly around and before 1AM. After 1AM the
main risk is for a line of storms with damaging straight line winds and a few tornadoes.
Timing: Midnight Friday Night through 11am Saturday Morning
Areas Impacted: All of Middle TN. Highest threat will be west of I-65 but severe
parameters look favorable for the entire area.
The Storm Prediction Center has been keeping a close eye on the forecasting data and movement of this cold front system.
Thursday, they decided to advance the risk from Slight to Enhanced from Nashville and out west. Currently, the east side of Middle Tennessee including Murfreesboro and Shelbyville is in the Slight Risk.
A slight risk has a concern for strong winds and potential hail, with a lower concern for tornadic activity. However, an enhanced risk has a greater chance of producing tornadoes and causing much more damaging winds and hail.
Severe storms are expected Friday night with an initial round possible from 10pm to 3am Saturday and than an additional line is expected from 2am to 9am. The earlier round is expected to affect only the orange area (in the graphic below) but the later round will threaten everyone. Strong tornadoes are possible, along with the threat of damaging straight line wind.