CURRENT SPACE WEATHER
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!
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
November 18, 2018
VERY LOW — No flares in the past two days.
SIDC reports there were no flares on the visible solar disc of the Sun in the past 24 hours. The chance for a C flare in the next 24 hours is estimated at 10%.
No earth-directed coronal mass ejections (CMEs( were observed in available coronagraphic imagery.
The greater than 10 MeV proton flux was at nominal levels in the past 24 hours, and is expected to stay at nominal levels in the next 24 hours.
In the past 24 hours, solar wind speed near Earth as registered by DSCOVR varied between about 275 to 340 km/s, with current values around 330 km/s. The Interplanetary Magnetic Field (IMF) was predominantly directed towards the Sun and its magnitude varied between about 4 and 7.5 nT since 04:45 UT on November 18. This may be the first sign of the arrival of a solar wind stream from a weak, negative polarity, equatorial coronal hole. Bz was never below -5 nT.
Finally, SIDC reports quiet geomagnetic conditions (K Dourbes between 0 and 1; NOAA Kp between 0 and 1) were registered in the past 24 hours. Quiet to unsettled conditions (K Dourbes < 4) are expected on November 18, 19 and 20, with a chance for active intervals due to the possible arrival of a solar wind stream from a weak, negative polarity, equatorial coronal hole.