Hundreds of powerful aftershocks are continuing to rock northeastern Japan in the wake of Friday's devastating major earthquake.
According to the U.S. Geological Survey (USGS) website, more than 400 aftershocks, all centered near the epicenter of Friday's quake east of Honshu, are occurring several times each hour.
A large percentage have been of magnitude 5.0 or higher, enough to cause significant trembling across the nearby mainland, where rescue efforts continue in towns and cities decimated by tsunami waves.
A plot of aftershocks in northeastern Japan through early Monday morning following the main earthquake. (USGS/Google Maps).
On Sunday, the Japan Meteorological Agency upgraded the magnitude of Friday's earthquake to a 9.0, while the USGS magnitude of 8.9 remained unchanged.
The death toll is already staggering, above 1,000, with officials fearing that hundreds more bodies will be found in the days to come.
Fortunately, tsunami warnings have long expired across the Pacific including in Hawaii and the United States, but wave heights remain elevated along the eastern coast of Japan with aftershocks ongoing.
Additional threats on land continue, with the Fukushima Daiichi nuclear plant emitting radiation. Thousands nearby have been evacuated with the threat of a meltdown looming.
Wrecked ships, houses and debris float in the sea in Kesennuma, Miyagi Prefecture, Sunday, March 13, 2011 after Japan's biggest recorded earthquake hit its eastern coast on Friday. (AP Photo/Itsuo Inouye)
Winds blowing offshore will continue to help push some of the radiation out over the Pacific Ocean on Monday, according to Meteorologist Meghan Evans.
Evans also indicates that a storm that will impact Sendai by Tuesday could hamper search and rescue efforts.
Unfortunately, aftershocks will continue for days as is often the case in the wake of powerful earthquakes.
Bone-chilling air, rain and even some snow will impact the Great Lakes and Northeast this Halloween, while warmth prevails in the Southwest.
A rain-free weekend is in store for the New York City area, ahead of a surge of warmth for the middle part of next week.
Tropical Cyclone Nilofar could threaten areas from the southern Arabian Peninsula to northwestern India next week.
Rain will continue to fall and heighten concerns for flooding across southeastern Europe into Sunday.
Heat building across central South America this weekend will set the stage for adverse weather next week.
After many locations over the Plains feel like late summer this weekend, the record-challenging warmth will expand to the Northeast next week.
Ashford, CT (1758)
"The 25th day of Oct., 1758, a very stormy day of snow, the 26th snowed all day, storm held from Friday night until Saturday morning." by Ebeneser Byles, Town Clerk of Ashford.
Tampa, FL (1921)
Hurricane "most destructive/highest tide," pressure 28.81"/975.6 mb, winds 100 mph, tide 10.5 feet, six dead and $3 million damage.
Strong coastal storm with winds exceeding 100 mph over the ocean; 82-mph wind gust at south end of Chesapeake Bay Bridge Tunnel. Bethany Beach Delaware being evacuated as waves came over the dunes. Heavy snow in NC mountains. Mt. Pisgah - 11 inches; Mt. Mitchell - 6 inches.