Space Weather

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Today's Sun
Solar Flare Activity
Solar Radiation and Aurora

Eastern Time 12-Hour	Eastern Time 24-Hour	UTC / Z / Greenwich
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Notices

For more information regarding solar activity, visit the Space Weather Prediction Center at https://www.swpc.noaa.gov/. See also the current NOAA Space Weather Forecast Discussion
More solar activity information can also be found at Solar Ham.com: https://www.solarham.net/
Information about space weather conditions, access data and services, and learn about space weather at Spaceweather Canada
Caution: Enjoy the solar images on this and other web pages. Never attempt to look directly at the sun--permanent eye damage can result.

Today's Sun

Visit NASA's Solar Dynamics Observatory (SDO) for more images and information.
Sunspots are areas that appear dark on the surface of the Sun. They appear dark because they are cooler than other parts of the Sun’s surface. Solar flares are a sudden explosion of energy caused by tangling, crossing or reorganizing of magnetic field lines near sunspots. Numbers are the current NOAA/SWPC sunspot regions.

Coronal Holes

View 48-hour video. Coronal holes are the primary solar wind source.

Prominence & Filaments

View 48-hour video

Planetary K Index

The K-index, and by extension the Planetary K-index, are used to characterize the magnitude of geomagnetic storms. Kp is an excellent indicator of disturbances in the Earth's magnetic field and is used by SWPC to decide whether geomagnetic alerts and warnings need to be issued for users who are affected by these disturbances.
Click for a tutorial.

SOHO LASCO C2 Coronagraph

The LASCO C2 coronagraph monitors the corona and can detect the emergence of coronal mass ejections.. White circle indicates the occluded solar disk.

SOHO LASCO C3 Coronagraph

The Large Angle and Spectrometric Coronagraph (LASCO) C3 coronagraph monitors the inner heliosphere from from and can track the propagation of coronal mass ejections previously seen by LASCO C2. White cirle denotes the occluded solar disk.

Solar Radiation Activity

Visit NOAA Space Weather Scales for an explanation of the intensity scales used in the graphs.

Sunspot Regions Chart

Click image for more information (on website click "Details" for explanation of chart markings).

Aurora Forecast

The Aurora Forecast Model shows the intensity and location of predicted auroras.