Yesterday's answer
Quakedle was 20 km E of Castle Rock, Washington.
Magnitude: M3.7 — minor class Magnitude type: ml — local magnitude (the original Richter-style scale) Depth: 17.6 km — shallow Region: Cascadia and the Pacific Northwest Tsunami indicator: USGS tsunami indicator not set Felt reports: 997 DYFI reports PAGER alert: No PAGER alert color reported Tectonic plates: Juan de Fuca Plate · North American Plate Tectonic context: Offshore Cascadia is a subduction margin where the Juan de Fuca Plate descends beneath North America; shallow crustal faults also occur inland.