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Sun Emits a Mid-level Solar Flare
April 18, 2014

The sun emitted a mid-level solar flare, peaking at 9:03 a.m. EDT on April 18, 2014, and NASA's Solar Dynamics Observatory captured images of the event. Solar flares are powerful bursts of radiation. Harmful radiation from a flare cannot pass through Earth's atmosphere to physically affect humans on the ground, however -- when intense enough -- they can disturb the atmosphere in the layer where GPS and communications signals travel.


To see how this event may impact Earth, please visit NOAA's Space Weather Prediction Center at http://spaceweather.gov, the U.S. government's official source for space weather forecasts, alerts, watches and warnings.

This flare is classified as an M7-class flare. M-class flares are one step below the most intense flares, which are designated as X-class.

Updates will be provided as needed.

Related Links

› Frequently Asked Questions Regarding Space Weather
› View Other Past Solar Activity

Karen C. Fox
NASA's Goddard Space Flight Center, Greenbelt, Md.

An M7-class solar flare burst from the sun on April 18, 2014.
A mid-level flare burst from the sun on April 18, 2014, as seen as a bright spot in the center of this image. The image was captured by NASA's Solar Dynamics Observatory in 304 angstrom.
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Page Last Updated: April 18th, 2014
Page Editor: Holly Zell