![](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/images\/2022\/09\/220918_goes16_visible_infrared_Hurricane_Fiona_anim.gif\")
<\/a>GOES-16 “Red” Visible (0.64 \u00b5m) and “Clean” Infrared Window (10.35 \u00b5m) images [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>1-minute Mesoscale Domain Sector GOES-16 (GOES-East)<\/em> “Red” Visible (0.64 \u00b5m<\/strong><\/a>) and “Clean” Infrared Window (10.35 \u00b5m<\/strong><\/a>) images (above)<\/strong><\/em> showed Fiona<\/strong><\/a> as it intensified to a Category 1 Hurricane just south of Puerto Rico during the morning hours on 18 September 2022. The coldest cloud-top 10.35 \u00b5m infrared brightness temperatures were around -88\u00baC.<\/p>\n The corresponding 1-minute GOES-16 Cloud Top Temperature<\/strong><\/a> and Cloud Top Height<\/strong><\/a> derived products are shown below — the coldest Cloud Top Temperature values were around -91\u00baC, while maximum Cloud Top Height values were around 61,000 feet.<\/p>\n GOES-16 Cloud Top Temperature and Cloud Top Height derived products [click to play animated GIF | MP4<\/strong><\/a>]<\/p><\/div>The highest wind gust at Buoy 42085<\/strong><\/a> — located just south of Ponce (station identifier TJPS) — was 72 knots (83 mph) at 16 UTC (below)<\/strong><\/em>.<\/p>\n Plots of wind speed(blue), gusts (red) and pressure (green) at Buoy 42085 [click to view]<\/p><\/div>Although Fiona was moving across relatively warm water<\/strong><\/a>, GOES-16 Infrared Window (11.2 \u00b5m<\/strong><\/a>) images with contours of deep-layer wind shear<\/strong><\/a> from the CIMSS Tropical Cyclones<\/strong><\/a> site (below)<\/strong><\/em> indicated that the storm was moving through an environment of moderate shear.<\/p>\n<\/a><\/a>