Categorized | Earthquake, News

Light 4.8M quake strikes Volcano area of Hawaii Island, no tsunami threat


View 20130811 Hilina Pali Quake in a larger map

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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