This page last updated April 20 2019.



The National Space Weather Program wrote, "Space weather refers to conditions on the Sun and in the space environment that can influence the performance and reliability of space-borne and ground-based technological systems, and can endanger human life or health."1

Current Space Weather

Current Space Weather conditions update automatically, irrespective of data on the remainder of this page!

Solar X-rays:
Geomagnetic Field:


Explanation of Space Weather Indicators Seen Above

An explanation of space weather indicators appears on a separate page.

Please go to Space Weather Indicators for the explanation. It will assist your understanding of space weather.

NOAA Space Weather Scale descriptions can be found at: NOAA Space Weather Scales.

Activity Level on the Sun

April 20, 2019

VERY LOW — No C-class flares in the past two days.


Today's Sun!


Photo Courtesy


SIDC reports solar activity was at very low levels. While rounding the west limb, NOAA 2738 produced 4 B-class flares, the strongest being a B8 flare peaking at 00:50UT. The lone sunspot group currently visible on the solar disk, NOAA 2739, was quiet and is decaying. No earth-directed coronal mass ejections were observed over the last 24 hours. Solar activity is expected to remain at very low levels.

No earth-directed coronal mass ejections were observed over the last 24 hours.

The greater than 10 MeV proton flux was at nominal values.

Solar wind speed was fairly steady between 300 and 350 km/s (DSCOVR). Bz varied between -4 and +6 nT. The interplanetary magnetic field was mostly directed away from the Sun (positive sector) until about 07:00UT, when it switched back to towards the Sun (negative sector). Geomagnetic conditions were at quiet levels, with an isolated unsettled interval (14-17UT) recorded at Dourbes.

Finally, SIDC reports quiet geomagnetic conditions are expected to continue, with a chance on an unsettled interval.

Now . . . let's take a little tour into the realm of: