Ida, Ascat and Turbulence
![](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2021/08/G16Band02Band13ASCATZoom-20210827_1408toggle.gif)
At 1400 UTC on 27 August, strengthening tropical storm Ida sat south of Cuba, near the Isle of Youth, and is shown above in both visible and infrared imagery; brightness temperatures are as cold as -87 C in the image above. Note also that the surface circulation is southeast of the coldest cloud tops, perhaps as a result of the shear (click here; analysis from the CIMSS Tropical Website) over the system. (Added: Ida made landfall as a hurricane on the Isle of Youth at 1800 UTC).
Perhaps not surprisingly, the convection in/around the tropical cyclone is diagnosed by a Turbulence prediction product (developed using machine-learning incorporating water vapor imagery, GFS stability, and airline observations of EDR (eddy dissipation rate)) as a very likely region of turbulence. This turbulence product is also available online here (where turbulence observations are included) where it looks like this.
![](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2021/08/G16ABIBand02Band13Turb-20210827_1408toggle.gif)
For more information on Hurricane Ida, including its potential threat to the central Gulf Coast late in the weekend, refer to the National Hurricane Center.