Alonsa, Manitoba EF-4 tornado
GOES-16 “Red” Visible (0.64 µm) images, with hourly plots of surface reports; yellow * denotes the town of Alonsa [click to play MP4 animation]
The corresponding GOES-16 “Clean” Infrared Window (10.3 µm) images (below) revealed that the coldest cloud-top infrared brightness temperature of around -70ºC occurred at 0123 UTC (just prior to the time of the tornado).
GOES-16 “Clean” Infrared Window (10.3 µm) images, with hourly plots of surface reports; black * denotes the town of Alonsa [click to play MP4 animation]
Environment Canada has upgraded the deadly Manitoba tornado to an EF-4, making it the strongest tornado confirmed in all of North America in 2018.#MBstorm #Alonsa https://t.co/BAl8ed5ZfU
— The Weather Network (@weathernetwork) August 7, 2018
One day following the Canada’s EF-4 ? a pass by #Sentinel2B ? shows a short but clear tornado scar. Starts southeast of Alonsa, ending at Margaret Bruce Provincial Park into Lake Manitoba. #mbstorm pic.twitter.com/34xoBnHpeS
— Carl Jones (@northflwx) August 8, 2018
The tornado damage path could also be seen in a comparison of ESA Sentinel-2 False Color, Normalized Difference Vegetation Index (NDVI) and Moisture Index Red-Green-Blue (RGB) images (below).