Categorized | Earthquake, News

Strong 6.7M quake near New Zealand, no tsunami threat to Hawaii

20130929_quake-newzealand


View Larger Map

TSUNAMI BULLETIN NUMBER 001
PACIFIC TSUNAMI WARNING CENTER/NOAA/NWS
ISSUED AT 0606Z 30 SEP 2013

THIS BULLETIN APPLIES TO AREAS WITHIN AND BORDERING THE PACIFIC
OCEAN AND ADJACENT SEAS…EXCEPT ALASKA…BRITISH COLUMBIA…
WASHINGTON…OREGON AND CALIFORNIA.

… TSUNAMI INFORMATION BULLETIN …

THIS BULLETIN IS FOR INFORMATION ONLY.

THIS BULLETIN IS ISSUED AS ADVICE TO GOVERNMENT AGENCIES. ONLY NATIONAL AND LOCAL GOVERNMENT AGENCIES HAVE THE AUTHORITY TO MAKE DECISIONS REGARDING THE OFFICIAL STATE OF ALERT IN THEIR AREA AND ANY ACTIONS TO BE TAKEN IN RESPONSE.

AN EARTHQUAKE HAS OCCURRED WITH THESE PRELIMINARY PARAMETERS

ORIGIN TIME – 0556Z 30 SEP 2013 (Hawaii Time/Date: 7:56 p.m. HST, Sept 29, 2013)
COORDINATES – 30.9 SOUTH 177.6 WEST
DEPTH – 29 KM
LOCATION – KERMADEC ISLANDS NEW ZEALAND
MAGNITUDE – 6.7

EVALUATION

NO DESTRUCTIVE WIDESPREAD TSUNAMI THREAT EXISTS BASED ON HISTORICAL EARTHQUAKE AND TSUNAMI DATA.

HOWEVER – EARTHQUAKES OF THIS SIZE SOMETIMES GENERATE LOCAL TSUNAMIS THAT CAN BE DESTRUCTIVE ALONG COASTS LOCATED WITHIN A HUNDRED KILOMETERS OF THE EARTHQUAKE EPICENTER. AUTHORITIES IN THE REGION OF THE EPICENTER SHOULD BE AWARE OF THIS POSSIBILITY AND TAKE APPROPRIATE ACTION.

THIS WILL BE THE ONLY BULLETIN ISSUED FOR THIS EVENT UNLESS ADDITIONAL INFORMATION BECOMES AVAILABLE.

THE WEST COAST/ALASKA TSUNAMI WARNING CENTER WILL ISSUE PRODUCTS FOR ALASKA…BRITISH COLUMBIA…WASHINGTON…OREGON…CALIFORNIA.

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.

 

 

Become a fan on facebook

Photos on flickr

Stock Quotes

NASDAQ4442.834  chart-29.273
S&P 5001977.86  chart-10.12
^NYA10987.565  chart-50.995
^TNX2.476  chart-0.033
AAPL97.08  chart+0.05
FB75.50  chart+0.52
GOOG588.37  chart-4.98
INTC34.00  chart-0.25
MSFT44.485  chart+0.085
ORCL40.45  chart-0.02
QCOM76.051  chart-0.121
ALEX38.91  chart-0.15
BOH56.73  chart-0.12
BRN3.10  chart0.00
BYD10.915  chart+0.165
CAGU0.23  chart0.00
CPF18.05  chart-0.26
CYAN4.8699  chart+0.1899
HA13.84  chart+0.14
HCOM28.62  chart-0.10
HE24.43  chart-0.22
MLP7.407  chart+0.107
MRPI0.0006  chart0.00
NNUT0.00  chartN/A
PLFF0.01  chart0.00
TBNK20.1899  chart-0.0201
TSO59.35  chart-0.46
Jul 25, 2014 / 12:01 pm

 

ad