![\"GOES-17](\"https:\/\/cimss.ssec.wisc.edu\/satellite-blog\/wp-content\/uploads\/sites\/5\/2019\/07\/190730_goes17_visible_infrared_Erick_anim.gif\")
<\/a>GOES-17 “Red” Visible (0.64 \u00b5m)<\/em> and “Clean” Infrared Window (10.35 \u00b5m)<\/em> images [click to play animation | MP4<\/strong><\/a>]<\/p><\/div>1-minute Mesoscale Domain Sector<\/strong><\/a> GOES-17 (GOES-West)<\/em> “Red” Visible (0.64 \u00b5m<\/strong><\/a>) and “Clean” Infrared Window (10.35 \u00b5m<\/strong><\/a>) images (above)<\/em><\/strong> showed the well-defined eye of Hurricane Erick<\/strong><\/a> on 30 July 2019. Mesovortices could be seen within the eye on the visible imagery, along with periodic convective bursts within the surrounding eyewall region — and cloud-top infrared brightness temperatures as cold as -84\u00baC were associated with these convective bursts.<\/p>\n Prior to sunrise Erick experienced a period of rapid intensification, as seen in a Advanced Dvorak Technique<\/strong><\/a> plot from the CIMSS Tropical Cyclones<\/strong><\/a> site (below)<\/strong><\/em>. Erick was classified as a Category 4 hurricane as of the 18 UTC advisory<\/strong><\/a>.<\/p>\n Advanced Dvorak Technique (ADT) plot for Hurricane Erick [click to enlarge]<\/p><\/div>Around the time that the period of rapid intensification was beginning, a NOAA-20 VIIRS Infrared Window (11.45 \u00b5m) image viewed using RealEarth<\/strong><\/a> (below)<\/strong> <\/em>revealed a distinct eye around 11 UTC.<\/p>\n<\/a>