Subtropical Cyclone Alberto

Subtropical Cyclone Alberto

After Subtropical Storm Alberto made landfall in the Florida Panhandle in late May 2018, the storm was downgraded to a subtropical depression. Alberto delivered wind and rain to large swaths of the southeastern United States before spinning up toward the Midwest and Great Lakes.

The Moderate Resolution Imaging Spectroradiometer (MODIS) on NASA’s Aqua satellite captured these images of the storm. The false-color views use MODIS band 31, which measures infrared signals known as brightness temperature. This band is useful for distinguishing cooler cloud structures from the warmer surface below.

The left image shows the storm at 1:25 p.m. Central Time (18:25 Universal Time) on May 30, 2018, as it moved across west-central Indiana. At the time, Alberto had maximum sustained winds of 45 kilometers (30 miles) per hour.

The right image shows the storm at 3:05 a.m. Central Time (08:05 Universal Time) on May 31. By this time, Alberto had become a post-tropical cyclone as it moved from away from lower Michigan toward the north-northeast.

Images & Animations


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  • JPEG 10 MB

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  • Data Date:

    May 30 - 31, 2018
  • Visualization Date:

    May 31, 2018
  • Sensor(s):

    Aqua - MODIS
NASA - National Aeronautics and Space Administration