"Extreme weather predictions for Friday have revealed a minor risk of twisters in southern Kentucky, Tennessee, Mississippi, Alabama, and small parts of northern Georgia. Overall, the National Oceanic and Atmospheric Administration (NOAA) called the risk 'marginal,' however their forecast still warned that short-lived tornados may touch down in isolated spots. If tornados do break out, they would most likely be an EF-0 or EF-1, weak twisters that last only a couple of minutes and mainly damage trees and tear shingles off roofs."
"NOAA's computer models and weather balloon readings showed that the wind right near the ground in these states was blowing pretty fast from the south or southeast. Just a couple thousand feet up, however, the wind this morning was already much stronger and coming more from the southwest. This change in speed and direction creates a 'twist' or rolling motion in the air."
NOAA called the tornado risk 'marginal' for parts of the South, but warned short-lived tornados could touch down in isolated spots. Clusters of showers and thunderstorms are expected Friday afternoon with an even higher likelihood tonight. Local meteorologists forecast heavy rainfall and ongoing thunderstorms, with 1–2 inches possible and localized higher totals. Wind profiles show strong low-level shear: southerly surface winds and stronger southwesterly winds a few thousand feet up create a twisting layer that storms can ingest, enabling rotation. Damaging wind gusts are the biggest risk, though an isolated tornado cannot be ruled out. Any tornadoes would likely be EF-0 or EF-1, brief and mainly damaging trees and shingles.
Read at Mail Online
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