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Marine Thunderstorm Wind — Altamaha Sd To Fernandina Beach Fl Out 20nm, Atlantic South

2023-08-08 · near Cumberland Stafford, Altamaha Sd To Fernandina Beach Fl Out 20nm, Atlantic South

45 MG

Magnitude

Event narrative

A mesonet site on Jekyll Island measured a wind gust of 52 mph.

Wider weather episode

Severe thunderstorms developed into the afternoon and evening as a frontal zone settled southward across SE GA and an impulse moved across the front. Significant heat and surface moisture in addition to steepening lapse rates ahead of the mid-level impulse created volatile surface-based instability which supported severe downbursts/outflows (50-70 mph) and hail. Given the near alignment of steering flow and the initiating boundary, the potential for waves or training convection created a flood threat as well.

View location on OpenStreetMap → (31.0500, -81.4100)

Source: NOAA Storm Events Database, event_id 1122767. Narrative written by the NWS forecast office that issued the report.