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Marine Thunderstorm Wind · Atlantic South

Marine Thunderstorm Wind December 20, 2012 · Fernandina Beach To St Augustine Fl 20 To 60nm, Atlantic South

40 mph

Measured gust (35 kt)

Where the report was made, with tornadoes recorded within 15 miles over the years.

The wider storm

A pre-frontal squall line moved over the Suwannee River Vally during the evening. Instability was marginal, however low level winds and speed shear were very strong with the 850 mb jet 50-60 knots. A nose of higher instability moved inland from Apalachee Bay and coincided over the Suwannee River Valley, and these convective ingredients phased to produce scattered pockets of wind damage with discrete rotating cells during the evening. Trees were blown down across portions of Suwannee, Hamilton and Alachua counties during this evening.

Began near Buoy 41012 (30.0000, -80.5000).

Source: NOAA Storm Events Database, event 419325. Narratives are written by the National Weather Service forecast office that issued the report.

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