Hurricane Isaac began as the ninth tropical depression of the season, forming east of the Lesser Antilles on August 21, 2012. By August 25, a tropical storm watch was in effect for the Florida Keys as the tropical cyclone headed toward the United States. On Tuesday August 28, Isaac was upgraded to a hurricane with maximum sustained winds of 75 mph. Tropical storm force winds extended outward up to 205 miles from the center. The hurricane passed over the Mississippi River Delta that night and moved back over water. A second landfall occurred along the coast of Louisiana just West of Port Fourchon around 2:15 the following morning, August 29. Hurricane Isaac continued to move slowly inland accompanied by heavy squalls, storm surge, flooding, wind, and tornadoes.
NWRC Response to Hurricane Isaac
USGS researchers were able to fly the Louisiana coastline on September 4, 2012 to document conditions and make an initial determination of the tropical cyclone's effects on the area. To view images collected during post-hurricane survey flights, click on the aerial reconnaissance link. To focus in on a site, click on any of the points. The brown points show aerial images of the coast, while the green points pull up special areas of interest. Each image is georeferenced by latitude and longitude. As data are obtained, this mapping application will be updated with additional content. Please note that the mapping application works best in FireFox or Chrome.
Other USGS Response to Hurricane Isaac
As Hurricane Isaac churned toward the northern Gulf Coast in August 2012, U.S. Geological Survey scientists worked to determine where and how the storm's waves and surge might dramatically reshape the beaches and dunes that stand between the storm and coastal developments. Through a complex modeling process that uses coastal elevations, wave forecasts, and potential storm surge, they predicted coastal change hazards, such as shoreline and dune erosion, that might be expected during an Isaac landfall. Learn more here.
Isaac storm tide mapper
Hurricane Isaac Aerial ImagesClick on the images to view a larger version.
Other Hurricane Information