TSUNAMI SEISMIC INFORMATION STATEMENT NUMBER 1
NWS PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI
557 AM HST SUN AUG 11 2013
TO – CIVIL DEFENSE 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 – 0554 AM HST 11 AUG 2013
COORDINATES – 19.3 NORTH 155.3 WEST
LOCATION – IN THE HILINA REGION OF KILAUEA VOLCANO
MAGNITUDE – MWP 4.6
EVALUATION
NO TSUNAMI IS EXPECTED. REPEAT. NO TSUNAMI IS EXPECTED.
HOWEVER…SOME AREAS MAY HAVE EXPERIENCED SHAKING.
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.
Where folks felt the quake (reported via USGS ‘Did you feel it?’ website)
M4.8 – Island of Hawaii, Hawaii
Sunday, August 11, 2013 at 15:54:05 UTC
Sunday, August 11, 2013 at 05:54:05 Local
19.35°N 155.27°W Depth: 31km
Summary of Responses by Zip Code
State |
ZIP Name |
ZIP Code |
Responses |
HI |
Captain Cook |
96704 |
12 |
HI |
Hakalau |
96710 |
1 |
HI |
Hawaii National Park |
96718 |
2 |
HI |
Hawi |
96719 |
6 |
HI |
Hilo |
96720 |
52 |
HI |
Holualoa |
96725 |
9 |
HI |
Honaunau |
96726 |
1 |
HI |
Honokaa |
96727 |
13 |
HI |
Honomu |
96728 |
1 |
HI |
Kahului |
96732 |
1 |
HI |
Kailua |
96734 |
1 |
HI |
Waikoloa |
96738 |
10 |
HI |
Kailua Kona |
96740 |
45 |
HI |
Kamuela |
96743 |
29 |
HI |
Keaau |
96749 |
26 |
HI |
Kealakekua |
96750 |
5 |
HI |
Kihei |
96753 |
2 |
HI |
Kapaau |
96755 |
7 |
HI |
Kurtistown |
96760 |
5 |
HI |
Laupahoehoe |
96764 |
4 |
HI |
Mountain View |
96771 |
23 |
HI |
Naalehu |
96772 |
4 |
HI |
Ninole |
96773 |
5 |
HI |
Paauilo |
96776 |
8 |
HI |
Pahala |
96777 |
1 |
HI |
Pahoa |
96778 |
32 |
HI |
Papaaloa |
96780 |
3 |
HI |
Papaikou |
96781 |
4 |
HI |
Pepeekeo |
96783 |
2 |
HI |
Volcano |
96785 |
24 |
HI |
Wahiawa |
96786 |
1 |
HI |
Mililani |
96789 |
1 |
HI |
Kula |
96790 |
4 |
HI |
Wailuku |
96793 |
1 |
HI |
Waimanalo |
96795 |
1 |
HI |
Honolulu |
96813 |
4 |
HI |
Honolulu |
96815 |
1 |
HI |
Honolulu |
96816 |
4 |
HI |
Honolulu |
96817 |
2 |
HI |
Honolulu |
96819 |
1 |
HI |
Honolulu |
96821 |
2 |
HI |
Honolulu |
96822 |
15 |
HI |
Honolulu |
96826 |
1 |
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