2
Recorded earthquakes
region
April 1977
Hilo earthquakes in April 1977
Earthquake archive for Hilo in April 1977: 2 recorded events with dates, magnitudes, depths and epicenter details.
Overview
Period at a glance
4.9
Strongest magnitude
4.5
Average magnitude
10.3 km
Average depth
Strongest event
4.9
21 Apr 1977
Hilo, United States
Depth
11.4 km
UTC
04:49:23
Coordinates
19.928, -155.326
Analysis of the recorded activity
During April 1977, 2 earthquakes were recorded near Hilo. Magnitudes ranged from 4.1 to 4.9, with an average of 4.5; depths ranged from 9.3 to 11.4 km, averaging 10.3 km. Activity extended from Thursday, April 21, 1977 to Friday, April 22, 1977 UTC.
Only 2 earthquakes in the current catalogue match this period and location.
Event list
All earthquakes
Mag
Location
Details
4.9
11.4 km
Hilo, United States
21 Apr 1977 04:49:23 UTC
4.1
9.3 km
Hilo, United States
22 Apr 1977 19:44:00 UTC