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[View the story "\"Best Northern Lights I've Seen in Years\"" on Storify]"Best Northern Lights I've Seen in Years"People in the United States and Canada had a second night's peek at the aurora, which is rare at that latitude.Storified by Accu Weather · Tue, Oct 09 2012 06:32:19People in the United States and Canada had a second night's peek at the aurora, which is rare at that latitude. An AccuWeather meteorologist said that Monday night's show was the "the best Northern Lights I've seen in years." However, "I think that our window for viewing the Northern Lights from this CME (coronal mass ejection) is over," AccuWeather.com Astronomy blogger Mark Paquette said.Ghost FlamemusubkGood space conditions for an aurora are hard to forecast. Other than analyzing satellite information, looking at the strength of the solar wind and proton density can help indicate the strength a geomagnetic storm. The stronger the geomagnetic storm, the more likely viewers would be able to see the Northern Lights farther south than usual."To make it as simple as possible," AccuWeather.com Astronomy blogger Mark Paquette said, "the most reliable measure of whether or not we will see the Northern Lights Tuesday night is the inter-planetary magnetic field (IMF for short)." When the IMF points south (southward Bz), it partially cancels out the Earth's magnetic field and allows energy from the solar wind to penetrate the Earth's atmosphere. Right now, the Bz is positive. There are no signs of Bz becoming negative Tuesday or Tuesday night so I think that our window for viewing the Northern Lights from this CME is over."The most difficult part of forecasting whether a CME (coronal mass ejection) will have an impact on the Earth is the arrival time. A coronal mass ejection is basically a storm, a burst of energy that is released from the Sun's surface. However, AccuWeather.com Astronomy blogger Mark Paquette said that a rule of thumb is that the massive release of solar wind and magnetic field from the surface of the Sun usually takes 36-48 hours to reach the Earth.Ramara Northern LightsrobandmariflorFlare-upMatthew SingerNorthern Lights from SheriffmuirwightmanmediaAurora 8.10.012Nightskyhunter On FlickrAurora 8.10.012Nightskyhunter On FlickrAurora IIIFriesen CreativeNorthern lights from the UP @twitterlessDylan http://pic.twitter.com/Nwc44XYhJoey Felker#tmt The aurora borealis (Northern Lights) as seen from County #Louth last night by Shane Murphy http://yfrog.com/gzwwbscxjThe Meteo TimesIf you're looking for more aurora pictures, here are some of the best from Sunday night: Photos: Rare Aurora Lights the Night SkyThis Day In Weather History Fort Wayne, IN (1992) Straight - line thunderstorm winds of 125 mph destroyed 5 homes and damaged 99. Galvest...
Storified by Accu Weather · Tue, Oct 09 2012 06:32:19
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A tropical wave is likely to become the Atlantic Basin's next tropical storm as it approaches or crosses the Caribbean Sea later this week.
Periods of soaking rainfall will drench portions of the northeastern United States from midweek through Friday.
Typhoon Megi will threaten lives and property in eastern China into the middle of the week after slamming Taiwan.
Gusty winds will accompany a push of chilly air across the Great Lakes through Tuesday.
The final day of September will bring a rare lunar event that hasn’t occurred since March of 2014, a Black Moon.
Following some rain and gusty winds on Tuesday, a strong storm will target the United Kingdom on Thursday.
South Carolina Coast (1893)
1,000 to 2,000 people died when hurricane
Denver, CO (1936)
Early heavy snow of 21.3 inches at airport
in 60-hour storm. Storm caused $7 million damage
to trees and shrubs in Denver area alone.
Gulf Coast of Mexico (1955)
Hurricane Janet hits with sustained winds
of up to 175 mph.