7.1 Earthquake Hits Japan Tsunami warning now lifted in ravaged northeast By Kate Seamons, Newser Staff Posted Apr 7, 2011 9:53 AM CDT Updated Apr 7, 2011 10:39 AM CDT 4 comments Comments In this image provided by the U.S. Navy shows an aerial view of damage to northern Honshu, Japan, after a 9.0 magnitude earthquake and subsequent tsunami devastated the area taken Friday March 18, 2011. (AP Photo/US Navy - Jay Okonek) (Newser) – Weary Japan has been struck by an earthquake once again: The USGS is reporting a 7.1-magnitude earthquake hit near the east coast of Honshu at 11:32pm local time—that's about 90 miles from Fukushima and about 200 miles from Tokyo, where buildings reportedly shook for a full minute. (It's been downgraded from the original 7.4.) A tsunami warning went up for 90 minutes before being lifted, reports the AP. Officials at the Fukushima Dai-ichi nuke plant say no new problems were immediately observed, and that workers are safe, though it is unclear whether they have been evacuated. Hundreds of aftershocks have shaken the northeast region since March 11, but few have been stronger than 7.0.