Severe Thunderstorms Expected Across Multiple U.S. Regions
• The National Weather Service (NWS) has issued a marginal risk of severe thunderstorms for parts of the Great Basin, Central Plains, and Midwest/Great Lakes regions through the evening of August 31,
• These storms are associated with an occluded upper low moving eastward from Manitoba and Alberta, combined with a low-amplitude shortwave trough over the Central Plains. Enhanced mid-level westerly flow and a moist, unstable air mass are contributing to the potential for severe weather. Key threats include damaging winds, hail, and isolated supercells, particularly in areas such as eastern Wisconsin, lower Michigan, and western New York. Additionally, thunderstorms in the Central Plains and Great Basin may produce strong downdraft winds and occasional hail.
Impact & Risks
Residents in the affected regions, including the Great Lakes, Central Plains, and Great Basin, should prepare for potential severe weather. The primary risks include damaging winds, hail, and isolated supercells capable of producing localized damage. Areas with strong instability, such as eastern Wisconsin and lower Michigan, may experience the most significant impacts. In the Great Basin, steep low-level lapse rates could enhance the risk of severe wind gusts and hail. While the overall risk is marginal, localized severe weather could still pose a threat to life and property.
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