2 structural fires: Beaver Dam, Wisconsin and San Francisco, California

GOES-16 Shortwave Infrared (3.9 µm, left) and “Red” Visible (0.64 µm, right) images, with hourly surface reports plotted in yellow [click to play animation]
2 days later, another structure fire occurred in the San Francisco area during the early evening hours of 17 March 2018:
A four-alarm fire in San Francisco’s North Beach neighborhood picked up on GOES-E this evening from 7:42 PM to 8:02 PM PDT. GOES-E “Nighttime Microphysics RGB” channel is typically used for fog detection. #SanFrancisco #NorthBeach #NorthBeachFire #GOES16 @NOAASatellites pic.twitter.com/dx9wSwp6QM
— NWS Bay Area (@NWSBayArea) March 18, 2018
Hot spot signatures were observed on the 0247 UTC and 0252 UTC (7:47 and 7:52 PM local time) Shortwave Infrared (3.9 µm) images, along with subtle lighter gray pixels on the Near-Infrared (2.24 µm) images (below).
A timely overpass of the NOAA-15 satellite scanned the fire at 02:43:50 UTC (7:43:50 PM local time), showing a well-defined hot spot (darker red enhancement) on the 1-km resolution Shortwave Infrared (3.7 µm) image (below).