Heads up: Northern Lights may be seen over W MI

Lietzen near Brandenburg eastern Germany.  AFP  dpa  Patrick Pleul  Germany OUTPATRICK PLEUL  AFP  Getty Images

A coronal mass ejection is an unusually large release of plasma and magnetic field from the solar corona. Watch the explosion on the sun in this coronagraph video from the National Weather Service (below).

The reason they may be visible is a geomagnetic storm from the sun. Many towns will stay partly cloudy. The brightest color tapestry will be across the high latitudes -- Alaska, Central and Northern Canada, and the northernmost part of the United States. At this time, the forecast is for a kP value of 6, or maybe even a 7.

From sunset on Sunday to 2 a.m. Monday, the aurora will extend further south than usual, reaching as far as southern Iowa.

AuroraWatch takes geomagnetic activity measurements to detect when it is likely aurora can be seen from the UK. In Rhode Island, Massachusetts and CT, find the darkest sky you can and look north.

Sky-watchers from coast to coast have the rare chance to catch a glimpse of auroras on Sunday night (July 16).

Weather aside, the best viewing conditions will be in more remote areas with little light pollution.

"We unfortunately may have some clouds to contend with", he said. Right now, those in Alaska and Scandinavia have to wait until late August before the night is dark enough to see the gorgeous lights.

There are several factors that will contribute to whether or not you'll be able to see them.

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