Lower-tropospheric vortex north of Hawai’i
![](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2021/12/hi_vis_dmw-20211202_210117.png)
GOES-17 (GOES-West) “Red” Visible (0.64 µm) images, with and without plots of Visible Derived Motion Winds (above) showed a lower-tropospheric vortex propagating west-northwestward to the north of Hawai’i on 02 December 2021. There were no ship or buoy reports in the vicinity of the vortex, but Derived Motion Wind speeds were 20-25 knots... Read More