Hurricane Fernanda
![GOES-16 Visible [0.64 µm, top) and Infrared Window (10.3 µm, bottom) images [click to play animation]](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2017/07/170714_goes16_visible_infrared_Hurricane_Fernanda_anim.gif)
GOES-16 Visible [0.64 µm, top) and Infrared Window (10.3 µm, bottom) images [click to play animation]
On 15 July Hurricane Fernanda became the first Category 4 tropical cyclone of the 2017 Northern Hemisphere season. GOES-16 “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) showed the development of a well-defined eye during the period of rapid intensification. As the National Hurricane Center mentioned, it was unusual to have a hurricane of this intensity at such a low latitude in the Eastern North Pacific Basin.
#Fernanda is among strongest hurricanes in the East Pacific at such a low latitude (<12°N). 100 kt at 10.9°N! @UMiamiRSMAS @capitalweather pic.twitter.com/nVJm622tE6
— Brian McNoldy (@BMcNoldy) July 14, 2017
Fernanda fluctuated between Category 3 and Category 4 intensity during the 15-17 July period (ADT | SATCON) as it passed over the warm waters of the East Pacific Ocean (Sea Surface Temperature and Ocean Heat Content) — and trochoidal oscillations in the northwestward motion of the eye could be seen in GOES-16 Infrared Window (10.3 µm) imagery (below).
![GOES-16 Infrared Window (10.3 µm) images [click to play animation]](https://cimss.ssec.wisc.edu/satellite-blog/wp-content/uploads/sites/5/2017/07/170715-17_goes16_infrared_Hurricane_Fernanda_anim.gif)
GOES-16 Infrared Window (10.3 µm) images [click to play animation]