5th Strong Quake Strikes Japan Region

Magnitude 6.5 Quake Strikes SW Ryukyu Islands, Japan

FEWW anticipates more earthquakes measuring 6+ to strike Japan Region in 2009

Japan Meteorological Agency (JMA) reported an earthquake measuring 6.5 striking Ishigakijima Kinkai area, SW Ryukyu Islands, Japan region at a depth of 10km on  17 Aug 2009 at 19:11 JST ( 10:11UTC).

Details of the earthquake were as follows:

Earthquake Information
Occurred at: 19:11 JST 17 Aug 2009
Region name ISHIGAKIJIMA KINKAI
Latitude: 23.1N
Longitude: 123.7E
Depth: about 10km
Magnitude: 6.5

Tsunami Warning

JMA issued a tsunami advisory/warning for MIYAKOJIMA and YAEYAMA areas cautioning of sea-level rises of about 0.5 meters. However, there were NO reports of damage, it said

Source: Japan Meteorological Agency (JMA). Image may be subject to copyright.

USGS reported the event as measuring 6.4Mw [Event ID: us2009kkay] followed by an aftershock of magnitude 5.5 [Event ID: us2009kkaz.]

10-degree Map Centered at 25°N,125°E

EQ Location Map. Source: USGS

Related Links:

• 4th Powerful Quake Strikes Japan Region
• 3rd Powerful Quake in 3 Days Strikes Japan Region

• Strong Quake Strikes Near Shizuoka, Japan
• Powerful Earthquake Strikes Near Izu Islands, Japan
• Earthquakes [Links Page]
• Earthquake Forecast: Tokyo, Japan
• M 6.4 Quake Strikes SW Ryukkyu Isls, Japan
• Magnitude 6.3 quake strikes Taiwan region

4th Powerful Quake Strikes Japan Region

Magnitude 6.8 Quake Strikes Ryukyu Islands, Japan

FEWW Moderators had predicted more powerful earthquakes in the region last week, and now believe as many as 10 additional magnitude 6+ quakes could yet strike the region in coming weeks

Volcanic Activity Forecast

FEWW Moderators also believe there is a strong probability (0.8+) that the submarine Unnamed Volcano located East of Taiwan at 24.00N, 121.83E could erupt in 2009. [See previous comment.]

This Earthquake:
Japan Meteorological Agency (JMA) reported the EQ details as follows

Earthquake Information
Occurred at: 09:06 JST 17 Aug 2009 [00:10UTC]
Region name: ISHIGAKIJIMA KINKAI
Latitude: 23.2N
Longitude: 123.8E
Depth:  about 10km
Magnitude: 6.8

Source: Japan Meteorological Agency (JMA). Image may be subject to copyright.

JMA issued the following tsunami warning:

Tsunami Information NUMBER 2  (High Tide Time and Estimated Tsunami Arrival Time at each place)

Issued at 09:10 JST 17 Aug 2009 [00:10 UTC]

High Tide Time and Estimated Tsunami Arrival Time at each place
Pay attention carefully in case a tsunami comes with a high tide and becomes higher.

Tsunami Forecast Region/ Tsunami Observation Site:
MIYAKOJIMA AND YAEYAMA AREA (*1)

High Tide Time /Estimated Tsunami Arrival Time:

MIYAKOJIMA AND YAEYAMA AREA (*1)
Iriomotejima 18:03 JST 17 Aug (*1)
Yonagunijima Kubura 18:06 JST 17 Aug 09:20 JST 17 Aug
Ishigakijima Ishigaki-ko 18:00 JST 17 Aug 09:30 JST 17 Aug
Miyakojima Hirara 17:55 JST 17 Aug 09:50 JST 17 Aug

[*1 mark: It is estimated that a tsunami has already arrived there.]

Tsunami Warning/Advisory

MIYAKOJIMA AND YAEYAMA AREA
No tsunami damage at some of the other coasts though there may be slight sea level changes.

END.

Meanwhile, USGS Earthquake Hazard Program reported the event as measuring 6.7Mw.

Earthquake Location Map. Source: USGS

Related Links:

• 3rd Powerful Quake in 3 Days Strikes Japan Region

• Strong Quake Strikes Near Shizuoka, Japan
• Powerful Earthquake Strikes Near Izu Islands, Japan
• Earthquakes [Links Page]
• Earthquake Forecast: Tokyo, Japan
• M 6.4 Quake Strikes SW Ryukkyu Isls, Japan
• Magnitude 6.3 quake strikes Taiwan region

Powerful Earthquake Strikes Near Izu Islands, Japan

Magnitude 7.1 Quake Occurs Near Izu Islands, Japan Region

A powerful earthquake measuring 7.1Mw occurred about 165km W of Hachijo-jima, Izu Islands, Japan, USGS reported, striking at a depth of 303.1km at 10:55:56 UTC.

Japan’s Meteorological agency said there was NO tsunami threat caused by this earthquake.

According to Reuters News Agency, quoting the national broadcaster, NHK, some high-speed train services were briefly suspended, while the tracks were checked, but no damage was reported.

This event raises the probability of FEWW forecast for Tokyo region to about 0.9 (86%).

Earthquake details:

• Magnitude: 7.1
• Date-Time
  • Sunday, August 09, 2009 at 10:55:56 UTC
  • Sunday, August 09, 2009 at 07:55:56 PM at epicenter
• Location: 33.144°N, 138.040°E
• Depth: 303.1 km (188.3 miles)
• Region: IZU ISLANDS, JAPAN REGION
• Distances
  • 165 km (100 miles) W of Hachijo-jima, Izu Islands, Japan
  • 175 km (110 miles) S of Hamamatsu, Honshu, Japan
  • 205 km (130 miles) S of Shizuoka, Honshu, Japan
  • 320 km (200 miles) SSW of TOKYO, Japan
• Location Uncertainty: horizontal +/- 5 km (3.1 miles); depth +/- 8.9 km (5.5 miles)
• Parameters: NST=201, Nph=201, Dmin=668.8 km, Rmss=0.85 sec, Gp= 29°, M-type=teleseismic moment magnitude (Mw), Version=7
• Source: USGS NEIC (WDCS-D)
• Event ID: us2009kcaz

10-degree Map Centered at 35°N,140°E

Earthquake Location Map. Source: USGS

Earthquake Location. [USGS.]

Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green.

For additional location maps click here.

Historic Seismicity [Source: USGS]

Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Seismic Hazard Map [Source: USGS]

Major Tectonic Boundaries: Subduction Zones -purple, Ridges -red and Transform Faults -green

Related Links:

• Earthquakes [Links Page]
• Earthquake Forecast: Tokyo, Japan
• M 6.4 Quake Strikes SW Ryukkyu Isls, Japan
• Magnitude 6.3 quake strikes Taiwan region

Magnitude 6.3 Quake Strikes Hokkaido Japan

Strong earthquake strikes Hokkaido, Japan

The earthquake measuring 6.3 MW in line with FEWW forecast

Earthquake Location. 10-degree Map Centered at 40°N,145°E – USGS

Earthquake details:

• Magnitude 6.3
• Date-Time: Friday, June 05, 2009 at 03:30:34 UTC [Friday, June 05, 2009 at 12:30:34 PM at epicenter]
• Location:  41.858°N, 143.399°E
• Depth 41.6 km (25.9 miles)
• Region:  HOKKAIDO ISLAND, JAPAN
• Distances
  • 150 km (90 miles) SW of Kushiro, Hokkaido, Japan
  • 215 km (135 miles) SE of Sapporo, Hokkaido, Japan
  • 220 km (135 miles) NE of Hachinohe, Honshu, Japan
  • 755 km (470 miles) NNE of TOKYO, Japan
• Location Uncertainty: horizontal +/- 5.3 km (3.3 miles); depth +/- 7.1 km (4.4 miles)
• Parameters: NST=185, Nph=185, Dmin=26.6 km, Rmss=0.81 sec, Gp= 36°, M-type=teleseismic moment magnitude (Mw), Version=7
• Source: USGS NEIC (WDCS-D)
• Event ID: us2009hmai

Overall, the population in this region resides in structures that are a mix of vulnerable and earthquake resistant construction. A magnitude 6.9 earthquake and tsunami occurred in the Japan region 92 km northwest of the location of this earthquake on March 21, 1982 (UTC), with estimated population exposures of 48,000 at intensity VIII and 170,000 at intensity VII, with no reported fatalities. On July 12, 1993 (UTC), a magnitude 7.7 earthquake and tsunami occurred near the Hokkaido Nansei-Oki, Japan, region 360 km west of the location of this earthquake, with estimated population exposures of 4,000 at intensity VIII and 84,000 at intensity VII, resulting in an estimated 230 fatalities. Recent earthquakes in this area have caused, landslides and fires that may have contributed to losses. USGS.

NO tsunami warning has been issued.

Related Links:

• Earthquake Forecast 2009
• Earthquake Forecast: Tokyo, Japan

• FEWW Earthquakes [Links to articles]