It can happen when a cold air mass collides with a warm air mass, which is something that can occur over ocean waters, the agency says.
Bomb cyclone weather term back in spotlight as West Coast prepares for bombogenesis storm
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The best viewing time is usually within an hour or two before or after midnight, and the agency says the best occasions are around the spring and fall equinoxes due to the way the solar wind interacts with Earth’s magnetic field.
What's behind the northern lights that dazzled the sky farther south than normal
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