Tropical Storm — Coastal Duval, Florida

2020-08-02 to 2020-08-04 · Coastal Duval, Florida

Event narrative

Tropical Storm Isaias tracked northward and remained offshore of the local Atlantic coast and produced with broken squalls moving onshore over the local area. Impacts to the county were minimal and confined to the immediate coast where Jacksonville Beach lost about 5 feet of sand in some locations. The peak wind across the county was measured with a WeatherFlow mesonet station at Jacksonville Beach Pier and was sustained 35 mph with a peak gust of 41 mph on Aug. 3rd at 3:27 pm. Gusts in squalls generally ranged between 30-40 mph elsewhere across the county. Rainfall was minimal and the peak value across the county was measured at the NWS Jacksonville office of 0.53 inches. Peak storm surged was 1.44 ft above ground level (MHHW) at Mayport on Aug 3rd at 9:54 pm. The surge reached 1.23 ft MHHW at the Dames Point Bridge at 11 pm on Aug 3rd. Within the St Johns River basin peak surge reach 0.88 ft MHHW at the Southbank Riverwalk in downtown Jacksonville on Aug 3rd at 11:45 pm and 0.80 ft MHHW at the Buckman Bridge on Aug 4th at 12:45 am.

Wider weather episode

Isaias tracked offshore of the local forecast area through the day August 3rd. Occasional rainbands moved onshore over the local area through the day with gusts of 20-40 mph.

Source: NOAA Storm Events Database, event_id 908141. Narrative written by the NWS forecast office that issued the report.