Live/Severe Alerts/Record/July 21, 2026
Warnings and watches, July 21, 2026
Every warning and watch the weather service first issued on July 21, 2026 (UTC), in the order of its hazards, each a door to its own report; a warning tagged with a damage threat with the most severe it reached; a river flood with the category of its flooding and its crest; the space weather that began that day, by the NOAA scales; and each volcano whose alert level changed.
Volcanoes 1
- Atka volcanic complex, Aleutians, AlaskaAdvisory, yellow to Normal, green, Jul 21, 2026, 12:08 PM AKDT. A small explosion from Korovin Volcano within the Atka Volcanic complex was detected in seismic and infrasound data on July 16, 2026.