Categorized | Earthquake, News

3.1M temblor shakes Waikoloa Monday afternoon (April 30)

Tuesday, May 01, 2012 at 01:17:35 UTC
Monday, April 30, 2012 at 03:17:35 PM at epicenter
19.841°N, 155.685°W
37.7 km (23.4 miles)
16 km (10 miles) SE (135°) from Waikoloa Village, HI
20 km (13 miles) S (184°) from Waimea, HI
21 km (13 miles) ESE (118°) from Puako, HI
64 km (40 miles) WNW (284°) from Hilo, HI
276 km (172 miles) SE (126°) from Honolulu, HI

If you felt the quake report it to the USGS here.

USGS: How large does an earthquake have to be to cause a tsunami?

Magnitudes below 6.5
Earthquakes of this magnitude are very unlikely to trigger a tsunami.

Magnitudes between 6.5 and 7.5
Earthquakes of this size do not usually produce destructive tsunamis. However, small sea level changes may be observed in the vicinity of the epicenter. Tsunamis capable of producing damage or casualties are rare in this magnitude range but have occurred due to secondary effects such as landslides or submarine slumps.

Magnitudes between 7.6 and 7.8
Earthquakes of this size may produce destructive tsunamis especially near the epicenter; at greater distances small sea level changes may be observed. Tsunamis capable of producing damage at great distances are rare in the magnitude range.

Magnitude 7.9 and greater
Destructive local tsunamis are possible near the epicenter, and significant sea level changes and damage may occur in a broader region.

Note that with a magnitude 9.0 earthquake, the probability of an aftershock with a magnitude exceeding 7.5 is not negligible. To date, the largest aftershock recorded has been magnitude 7.1 that did not produce a damaging tsunami.

One Response to “3.1M temblor shakes Waikoloa Monday afternoon (April 30)”

  1. familyforest says:

    Good thing I was at the beach and did not feel it!


Leave a Reply

This site uses Akismet to reduce spam. Learn how your comment data is processed.

Become a fan on facebook


%d bloggers like this: