🌋 Volcanology

Real-time Kīlauea eruption tracker: every fountaining episode from the USGS table, live tilt, SO₂ and crater-floor plots, a quake map with depth through time, and HVO webcams with freshness badges. Refreshed hourly by GitHub Actions. Built before a birthday trip to Hawaiʻi Volcanoes National Park.

The network that watches Mount Rainier for lahars, live: about 50 seismometers and infrasound arrays and whether each is actually reporting, the USGS alert level and newest notice, earthquakes against 25 years of normal, NOAA gauges on the Puyallup, Carbon, White and Nisqually, and the USGS hazard zones. The volcano you can see from the backyard.

Live earthquakes for the US and the world — pick any state or country, see it against ten years of normal, and follow aftershock sequences as they decay. Cascadia is the one I watch closest. Its home is the Geology page.

SNOTEL and NASA MODIS snowpack data for the Mt. Rainier watershed — hourly updates, seasonal comparison, and melt rate tracking. The snowpack that feeds the rivers that lahars would follow. Its home is the Hydrology page.