03-09-2009, 12:19 PM
The quality of an earthquake is rated from excellent to poor - excellent are earthquakes that register on global seismic detectors, poor are detected on local seismic detectors... so this mornings quake was a locally detectable quake (and fairly localized, given the fact is was a moderate depth (19 km ) 4.0. Most of Puna felt a bump, but Hamakua felt a jolt)