6.1 Earthquake hits Hokkaido, Japan Region – Oct 21, 2011

An earthquake measuring 6.1 on the Richter scale jolted Hokkaido, Japan region at 0802 GMT on Friday.

Earthquakes 6+

From September 22. 2011 to October 121, 2011 (16 Quakes)

6.2 Alaska on  Sept. 14 / 6.0 Cuba , 6.1 Nw. Zealand , 6.2 Japan , 7.3 Fiji all on Sept. 15 / 6.6 Japan , 6.0 Japan both on Sept.16 / 6.9 India on Sept. 18 / 6.4 Tonga on Sept. 22 / 6.2 Argentina on Oct. 6 / 6.1 Kermadec Islands on Oct. 7/6.8 Bali on Oct.13/6.7 Papua Nw. Guinea, 6.1 Amurskaya Russia both on Oct.14/6.3 Papua Nw. Guinea on Oct.18/ 6.1 Hokkaido, Japan Region on Oct.21/

Magnitude 6.1
Location 43.889°N, 142.477°E
Depth 185 km (115.0 miles)
Distances 17 km (10 miles) NE of Asahikawa, Hokkaido, Japan
121 km (75 miles) NNW of Obihiro, Hokkaido, Japan
131 km (81 miles) NE of Sapporo, Hokkaido, Japan
941 km (584 miles) NNE of TOKYO, Japan
Location Uncertainty horizontal +/- 13.3 km (8.3 miles); depth +/- 5.3 km (3.3 miles)
Parameters NST=611, Nph=645, Dmin=26.7 km, Rmss=0.63 sec, Gp= 14°,
M-type=”moment” magnitude from initial P wave (tsuboi method) (Mi/Mwp), Version=A
  • Magnitude: USGS NEIC (WDCS-D)
    Location: USGS NEIC (WDCS-D)
Event ID usb0006b09

Source and author: earthquake.usgs.gov

2 responses to “6.1 Earthquake hits Hokkaido, Japan Region – Oct 21, 2011

  1. There are EVERY day earthquakes in Japan. Not only after the big one but also before. If you watch regular TV, on the top of the screen there are about every few hours earthquake reports. Literally every day, every couple of hours. Why bother pointing this one out?


  2. Since the Fukushima nuclear meltdowns, and with reactor number 4 at the Daiichi plant still leaning over and in danger of toppling, not to mention everything else that could go even more horrendously wrong at that nuclear death plant during a quake, I think it’s quite prudent indeed, to keep tabs on each and every single earthquake that hits Japan! Any one of them, depending on their size and location, could be the final nuclear nail in the coffin, for not only Japan, but for the rest of us, too. Every time they are just small and/or not in the immediate vicinity of Fukushima, I just breathe a sigh of relief! Whew!