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Severe Thunderstorms and Heavy Rainfall from the Lower Mississippi Valley to the Mid-Atlantic; Active Pattern Continues in Hawaii

Scattered severe thunderstorms are expected today from the ArkLaTex and Lower Mississippi Valley through the Ohio Valley and Mid-Atlantic. Thunderstorms may produce heavy to excessive rain that could pose a flooding threat today from east Texas into New York. A powerful kona storm will continue to impact Hawaii through Saturday, bringing heavy rainfall, strong winds, and severe thunderstorms. Read More >

Overview

A strong low pressure system moved across the Northern Plains on Monday, March 29th, 2021, and brought a period of very strong winds to the region. Strong west to southwest winds developed Sunday night, then shifted to the northwest on Monday as a vigorous cold front swept through. The strongest wind gust of 81 mph was measured Monday morning on the south side of Rapid City. In addition, very dry air combined with the strong winds and dry vegetation led to multiple fires in the Black Hills and prairies, with the Schroeder Fire infringing on the western edge of Rapid City and the Divide Fire in Perkins County.

The image to the right shows the wind observations at the NWS office near downtown Rapid City for March 29th.
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NWS Rapid City Wind Observations
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