November 15th, 2020 | Scott Bachmeier
Iota intensified to a Category 1 hurricane at 0600 UTC on 15 November 2020 — 1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm), “Clean” Infrared Window (10.35 µm) and Mid-level (6.9 µm) Water Vapor images (above) showed that the interior structure of the tropical cyclone improved during the day.
GOES-16 Longwave Infrared (11.2 µm) images, with contours of 02 UTC deep-layer wind shear (below) showed that the hurricane was moving through an environment of low southwesterly shear, which favored intensification.
===== 16 November Update =====
Iota rapidly intensified to a Category 5 storm as of 15 UTC on 16 November. 1-minute GOES-16 Visible and Infrared images from sunrise to sunset are shown above; mesovortices were seen within the eye of the hurricane.
After sunset, Hurricane Iota eventually made landfall along the coast of Nicaragua as a Category 4 storm at 0340 UTC on 17 November — GOES-16 Infrared images (above) indicated an eye structure that was deteriorating and becoming more cloud-filled as Iota approached the coast.