This page last updated January 21, 2018.



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

Due to the government shutdown, this informaion is temporarily not available.

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

January 21, 2018

VERY LOW — No flares in the past two days.


Today's Sun!


Photo Courtesy


SIDC reports during last 24 hours solar activity was very low with no C-class and even B-class flares reported. As there are no numbered active regions observed on the visible side of the solar disc, we expect such a low flaring activity to persist in the coming hours.

The coronagraph images do not show any signatures of the possibly Earth-directed CME.

The solar proton flux is at the background level.

SThe Earth is presently inside the slow solar wind with the speed of about 320 km, and the interplanetary magnetic field magnitude is about 3 nT.

Finally, SIDC reports geomagnetic conditions are quiet and we expect them to remain so in the coming hours. The unsettled geomagnetic conditions can be expected starting from the late evening of January 22, due to expected arrival of the fast solar wind from the extended positive polarity equatorial coronal hole which reached central meridian in the morning of January 19.

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