M6.9 EQ Strikes Big Island, Hawaii

PTR – 050502

Strong Earthquake Rattles Hilo, HI

EQ Details:

Magnitude: 6.9 mww
Location: 19.370°N, 155.032°W [16km SW of Leilani Estates, Hawaii; about 28km south of Hilo]
Depth: 5.0 km
2018-05-04 22:32:55 UTC

No. of Recorded Aftershocks: >160
Largest aftershock:
M 5.4 – 18km SW of Leilani Estates, Hawaii
Location: 19.342°N 155.032°W
Depth: 6.9 km
Time: 2018-05-04 21:32:44 (UTC)
[USGS]

TSUNAMI EVALUATION [PACIFIC TSUNAMI WARNING CENTER EWA BEACH HI]

• NO Tsunami Threat from the EQ, or its aftershocks, as of posting.

 

US Earthquakes: Aftershocks Continue near Lincoln, Montana and NW of YNP

AIS-802D

Dozens of aftershocks follow M5.8 Montana event

Swarms of about 140 aftershocks have occurred near Lincoln, Montana and northwest of Yellowstone National Park (YNP) following the 5.9 magnitude shallow earthquake that struck the area on July 6.

• Additional information is available via FIRE-EARTH PULSARS.

Significant Events – April 30, 2016

Strong aftershocks continue to rattle Vanuatu

Latest Events [USGS/EHP]

• M5.1 (16.262°S, 167.205°E) 27km SW of Lakatoro, Vanuatu 2016-04-30 09:26:30 UTC; depth=12.1km
• M4.7 28km SW of Lakatoro, Vanuatu 2016-04-30 08:45:57 UTC 7.3 km
• M6.0 (16.306°S, 167.188°E) 32km SW of Lakatoro, Vanuatu 2016-04-30 08:35:42 UTC; depth=4.8km
• M5.0 31km SW of Norsup, Vanuatu 2016-04-30 04:38:28 UTC; depth=10.0km
• M4.8 48km W of Norsup, Vanuatu 2016-04-29 22:50:14 UTC;depth=19.3km

Philippines: Drought and dry spells [OCHA]

Some 42 per cent of the Philippines is currently experiencing drought or dry spells brought on by El Niño effect. As of 15 April, 39 provinces, cities, municipalities and villages have declared a state of calamity. The worst affected areas are Mindanao and the Visayas regions. According to UN OCHA, around 181,687 farmers and 224,834 hectares of agricultural land have been affected since January 2016. Already, an estimated CHF 81 million in agricultural production has been lost. Rainfall for March was again well below normal.

Most of the affected areas are in Mindanao. According to the Department of Social Welfare and Development (DSWD), as of April 16, a total of 457,497 families or 2,124,790 persons from Regions NCR, I, II, III, IV-A, IV-B, VI, VII, X, XI, XII, and ARMM have been affected by El Nino.

Significant Seismicity Occurs near Ecuador Disaster Area

M6.0 and aftershocks rattle Ecuador coastal area

M6.0 event occurs 33km NNW of Bahia de Caraquez, Ecuador.

EQ Details

Magnitude: 6.0Mw [USGS/EHP]
Location: 0.328°S, 80.543°W
Depth: 10.0 km
Time: 2016-04-22 03:03:41 UTC
224.0 km (139.2 mi) W of Quito, Ecuador

Aftershocks

• M4.8 about 39km NNW of Bahia de Caraquez, Ecuador 2016-04-22 08:52:24 UTC; depth=46.6 km
• M5.0 about 27km NW of Bahia de Caraquez, Ecuador 2016-04-22 04:31:34 UTC; depth=11.0 km
• M5.8 about 36km NNW of Bahia de Caraquez, Ecuador 2016-04-22 03:20:13 UTC; depth=10.0 km

Quake Aftershocks Hit China

Update #2 – China Quake

A Cluster of 28 Aftershocks Strike Eastern Sichuan, China

According to USGS, a cluster of 22 aftershocks measuring 4.8 and 6.0 in magnitude have struck the EASTERN SICHUAN region, China, in the 18-hour period since the mainshock devastated several townships in the region.

Bigger earthquakes have more and larger aftershocks. The bigger the main shock the bigger the largest aftershock will be, on average. The difference in magnitude between the main shock and largest aftershock ranges from 0.1 to 3 or more, but averages 1.2 (a M5.5 aftershock to a M6.7 main shock for example). There are more small aftershocks than large ones. Aftershocks of all magnitudes decrease at the same rate, but because the large aftershocks are already less frequent, the decay can be noticed more quickly. Large aftershocks can occur months or even years after the main shock. (Source: USGS)

A rescuer searches for victims after an earthquake in Chongqing municipality, May 12, 2008. REUTERS/Stringer. Image may be subject to copyright. See FEWW Fair Use Notice.

Related Links:

• NOAA Tsunami
  

• China Quake Death Toll Nearly 10,000
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• China quake death toll nears 9,000

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