Quakedle
Puzzle #77 was 6 km WNW of Wauna, Washington.
Quakedle is an educational game. Event details and tsunami indicators must not be used for emergency decisions; follow official local authorities and current USGS notices.
USGS — Tectonic Plates of the Earth
How it scored
- Magnitude
- M4.2 — light class
- Magnitude type
- ml — local magnitude (the original Richter-style scale)
- Depth
- 27.9 km — shallow
- Region
- Cascadia and the Pacific Northwest
- Tsunami indicator
- USGS tsunami indicator not set
- Felt reports
- 7,355 DYFI reports
- PAGER alert
- green PAGER alert
- 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.
Also on the record
- USGS reports magnitude M4.2. Which standard descriptive class contains it?
- Light (M4.0–4.9)
- The hypocentral depth is 27.9 km. Which depth band is it in?
- Shallow (less than 70 km)
- USGS locates the event at “6 km WNW of Wauna, Washington”. Which broad authored region matches?
- Cascadia and the Pacific Northwest
- What does the USGS tsunami indicator say for this event?
- No — USGS did not set the event’s tsunami indicator; that is not a forecast.
- USGS received 7,355 “Did You Feel It?” reports. Which band is that?
- Very widely felt (1,000+)