Emergency and disaster management briefing for September 13, 2021: A new lava flow has been confirmed at the summit crater on Alaska’s Great Sitkin volcano; rain on Friday helped calm the Dixie Fire in California; a hazmat incident has left two North Carolina plant employees dead; Tropical Storm Nicholas is forecast to drop heavy rainfall on Texas and Louisiana; repairs continue on I-70 in Colorado through the Glenwood Canyon; a renewable energy company based in Spain claims to have produced a recyclable wind turbine blade; the NHC is monitoring two systems in the Atlantic basin that are likely to develop over the next five days; and new research identifies a wind phenomenon that may help forecast violent, deadly tornadoes nearly 30 minutes before they strike.

1. Volcanologists confirmed that a new lava flow emerged from the summit crater last week on the Great Sitkin volcano in Alaska. The Great Sitkin is a stratovolcano rising to over 5,700 feet high and is located in the Aleutian Islands. Small earthquake swarms continue beneath the volcano, which last erupted in 1974. The effusive eruption from the current active lava dome has nearly covered the previous dome from the 1974 eruption.

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