Location of a quake that struck the Big Island at 8:16 a.m. Monday, February 9, 2015. Map courtesy of USGS

The seismic recording of the Monday morning (Feb 9) quake shows a strong beginning and tapering off. Readout in Volcano area via USGS/HVO.

The 4.3 magnitude temblor was reported to be felt in many places on the Big Island including Volcano, Mountain View, Kurtistown, Hilo, Pepeekeo, Honomu, Pahoa, Naalehu and Captain Cook according to the USGS/HVO website.

Magnitude
4.3

Event Time
2015-02-09 18:16:15 (UTC)
2015-02-09 08:16:15 HAST (Hawaii-Aleutian Standard Time)

Nearby Cities
12km (7mi) WSW of Volcano, Hawaii
45km (28mi) WSW of Hawaiian Paradise Park, Hawaii
47km (29mi) SSW of Hilo, Hawaii
74km (46mi) ESE of Kailua-Kona, Hawaii
339km (211mi) SE of Honolulu, Hawaii

TSUNAMI SEISMIC INFORMATION STATEMENT NUMBER   1
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
818 AM HST MON FEB 09 2015

TO - EMERGENCY MANAGEMENT IN THE STATE OF HAWAII

SUBJECT - LOCAL TSUNAMI INFORMATION STATEMENT

THIS STATEMENT IS FOR INFORMATION ONLY. NO ACTION REQUIRED.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

   ORIGIN TIME - 0816 AM HST 09 FEB 2015
   COORDINATES - 19.4 NORTH  155.3 WEST
   LOCATION    - IN THE SUMMIT REGION OF KILAUEA VOLCANO
   MAGNITUDE   - 4.0

EVALUATION

 NO TSUNAMI IS EXPECTED. REPEAT. NO TSUNAMI IS EXPECTED.

THIS WILL BE THE ONLY STATEMENT ISSUED FOR THIS EVENT UNLESS
ADDITIONAL DATA ARE RECEIVED.

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.