GOES-18 (GOES-West) SO2 RGB and Ash RGB images (above) showed the complex transport of a volcanic cloud (shades of yellow in the SO2 RGB imagery) produced by an explosive eruption of Mount Shishaldin that began around 1340 UTC on 25 September 2023. The bulk of the cloud drifted to the southeast, while another part wrapped cyclonically across the far... Read More
Wave observations from the Aunu’u site just to the east of American Samoa, above, show waves exceeding 12 feet starting late in the day on 22 September and persisting through the weekend into the 25th. The National Weather Service office in Pago Pago issued High Surf Warnings during this eventASZ001>004-251915-Tutuila-Aunuu-Manua-Swains Island-Rose Atoll-705 PM SST Sun Sep 24 2023 ...HIGH SURF... Read More
1-minute Mesoscale Domain Sector GOES-16 (GOES-East) “Red” Visible (0.64 µm) and “Clean” Infrared Window (10.3 µm) images (above) showed Ophelia for a few hours after it became a Tropical Storm at 1800 UTC on 22 September 2023. The low-level circulation center (LLCC) was initially exposed, but deep convection just to the west began to increase in coverage and intensity as it... Read More
10-minute Full Disk sector GOES-18 (GOES-West) Day Land Cloud Fire RGB, Shortwave Infrared (3.9 µm), “Clean” Infrared Window (10.3 µm) and “Red” Visible (0.64 µm) + Fire Power derived product (a component of the GOES Fire Detection and Characterization Algorithm FDCA) images (above) showed signatures of multiple wildfires across northeastern British Columbia (BC) and northwestern Alberta (AB), some of which... Read More
