MCS Charges into Tennessee Bearing 70 MPH Wind Threat — SevereWX

A cold-pool-driven mesoscale convective system (MCS) packing a history of wind damage is barreling south-southeast at 40 knots toward Tennessee, per SPC Mesoscale Discussion 1749.

This cluster of storms precedes an environment ripe for severity: 4500+ J/kg MLCAPE and 35-40 knots of effective bulk shear oriented perpendicular to the leading line. SPC forecasters expect damaging gusts, with many reaching 55-70 mph—severe territory—as the MCS crosses into western and middle Tennessee around 0130Z (8:30 PM CDT).

Key Details:

• Affected Areas: Portions of western into middle Tennessee.
• Valid Time: 270034Z - 270130Z (roughly 10:34 PM - 12:30 AM EDT).
• Watch Probability: 60%—issuance likely if the MCS holds intensity nearing the KY/TN border.
• Peak Wind Gust Forecast: 55-70 mph.

The system's cold pool and storm motion should sustain it across this high-instability zone, posing risks to Nashville-area spots and westward. No widespread tornado or large hail threats noted, but straight-line winds could down trees, power lines, and cause outages.

Track it live via radar on SevereWX.net or SPC graphics. Stay prepared: secure outdoor items, charge devices, and monitor NWS alerts. Have a plan if winds intensify—safety first in severe weather.