As a system of low pressure moves in from our west on Thursday, showers and storms will result with some being severe. The yellow outline below is where the highest chance of severe storms will be.
What are the biggest threats with tomorrow’s storms? There is a low threat of a tornado (below) but not zero, so any storm could produce a tornado warning.
However, the biggest threat is damaging winds (below), in excess of 58 mph which could take down trees and power lines.
What is the timing of the storms? Early Thursday morning so be ready! Expect bad travel conditions anywhere in the yellow. Official SPC discussion:
..TN Valley into the Carolinas/Mid-Atlantic... Showers and thunderstorms will likely be ongoing from the middle/upper OH Valley southwestward through the TN Valley early Thursday morning, ahead of shortwave trough moving through the OH and TN Valleys. This broad area of showers and thunderstorms is expected to gradually shift eastward as the shortwave trough continues eastward throughout the day. These showers and thunderstorm should limit destabilization across the Upper OH Valley and northern Mid-Atlantic, but some potential for destabilization exists farther south from eastern TN and northern AL/GA into the Carolinas and southern VA. Thunderstorm development would be likely in this area as the approaching cold front interacts with the destabilized air mass. Strong mid-level flow supports the potential for organized storms, with a bowing/line segment mode most likely. One caveat regarding that scenario is the potential for early period showers and thunderstorms to linger and limit destabilization. Additionally, there is also some potential for the early storms to be strong enough to overturn the airmass. Despite these uncertainties, strong deep-layer shear suggests any robust convection could be severe, and 15% wind probabilities were introduced across the central and eastern Carolinas where highest confidence in storms exists. Less buoyancy is anticipated with northern extent into VA, but strong wind fields merit a northward expansion of the 5% wind probabilities.
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