Live/Severe Alerts/Record/April 21, 2026
Warnings and watches, April 21, 2026
Every warning and watch the weather service first issued on April 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
- Kilauea, HawaiiAdvisory, yellow to Watch, orange, Apr 20, 2026, 9:16 PM HST. Precursory low-level activity for episode 45 of the ongoing Halemaʻumaʻu eruption at the summit of Kīlauea began around 7:46 p.m. HST on April 20, 2026, with several overflows of lava from the north vent.