This page last updated February 20, 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

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

February 20, 2018

VERY LOW — No flares in the past two days.


Today's Sun!


Photo Courtesy


SIDC reports there are no sunspot regions on the visible hemisphere of the Sun and flaring level is very low. The chance for a C flare in the next 24 hours is estimated at 5%.

No Earth-directed Coronal Mass Ejections (CMEs) were observed in available coronagraphic imagery. The greater than 10 MeV proton flux was at nominal levels.

Solar wind speed measured by DSCOVR was from about 570 and 440 km/s in the past 24 hours. The Interplanetary Magnetic Field (IMF) was directed towards the Sun and its magnitude varied between about 1 and 8 nT. Bz was variable and never below -5 nT. Solar wind is expected to decrease further in the next 24 hours as coronal hole high speed stream influence wanes.

Finally, SIDC reports quiet to active geomagnetic conditions (K Dourbes between 1 and 4; NOAA Kp between 1 and 4) were registered in the past 24 hours. Quiet to unsettled levels (K Dourbes < 4) are expected on February 20, 21 and 22, with a chance for active conditions (K Dourbes = 4).

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