Minor mag. 1.2 earthquake - Explosion - 6 Km SE of Castle Rock, Washington, USA, on Monday, 15 March 2021 at 19:05 (GMT) -
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Minor magnitude 1.2 earthquake at 1 km depth
15 Mar 23:54 UTC: First to report: USGS after 5 hours.
Date & time: 15 Mar 2021 19:05:55 UTC -
Depth: 0.7 km
Epicenter latitude / longitude: 46.24083°N / 122.837°W (Washington, United States)
Nearest volcano: Mount St. Helens (51 km / 32 mi)
Nearby towns and cities:
7 km (4 mi) SE of Castle Rock (pop: 2,180) --> See nearby quakes!
12 km (7 mi) NNE of Kelso (Cowlitz County) (pop: 11,900) --> See nearby quakes!
14 km (9 mi) NE of Longview (Cowlitz County) (pop: 36,800) --> See nearby quakes!
68 km (42 mi) NNW of Vancouver (pop: 172,900) --> See nearby quakes!
81 km (50 mi) N of Hillsboro (Oregon) (pop: 102,300) --> See nearby quakes!
81 km (50 mi) N of Portland (Oregon) (pop: 632,300) --> See nearby quakes!
83 km (52 mi) N of Aloha (Oregon) (pop: 49,400) --> See nearby quakes!
84 km (52 mi) N of Beaverton (Oregon) (pop: 96,600) --> See nearby quakes!
88 km (55 mi) NNW of Gresham (Oregon) (pop: 110,600) --> See nearby quakes!
89 km (55 mi) S of Olympia (pop: 50,300) --> See nearby quakes!
Primary data source: USGS (United States Geological Survey)
Estimated released energy: 4 x 106 joules (1.11 kilowatt hours) More info
Data for the same earthquake reported by different agencies
Info: The more agencies report about the same quake and post similar data, the more confidence you can have in the data. It takes normally up to a few hours until earthquake parameters are calculated with near-optimum precision.
|1.2||0.7 km||Explosion - 6 Km SE of Castle Rock, Washington, USA||USGS|
User reports for this quake
User reports estimate the perceived ground shaking intensity according to the MMI (Modified Mercalli Intensity) scale.At magnitude 1.2, such a quake wouldn't normally be felt by people, but could be recorded instrumentally.