Solar activity was at low levels. The largest event during last 48 hours was a long duration C1 solar flare with a large prominence erupted on September 23 around 15:56 UTC from an area behind the eastern limb. It produces CME cloud with no threat to Earth.
Some activity can be expected from the Sunspot 1575 which is growing and has at the moment beta-gama configuration. Sunspot 1577 is growing fast and might give C-class and M-class flares. NOAA/SWPC forecasters estimate a 10% chance of an eruption during the next 24 hours. Any CME produced at this time would be Earth-directed. The remaining regions were quiet and stable.
ACE satellite measurements indicated a steady decline in wind speed from about 400 km/s to near 350 km/s while the Bz component of the interplanetary magnetic field did not vary much beyond +/- 4 nT. A solar wind stream flowing from coronal hole should reach Earth on Sept 23/24. There are no large coronal holes so the geomagnetic field is expected to be at predominately quiet levels for the next three days.
speed: 353.3 km/sec
density: 3.1 protons/cm3
The Radio Sun
10.7 cm flux: 125 sfu
Now: Kp= 0 quiet
24-hr max: Kp= 1 quiet
Interplanetary Mag. Field
Btotal: 3.3 nT
Bz: 2.7 nT north
If you value what we do here, open your ad-free account and support our journalism.
Producing content you read on this website takes a lot of time, effort, and hard work. If you value what we do here, select the level of your support and register your account.
Your support makes this project fully self-sustainable and keeps us independent and focused on the content we love to create and share.
All our supporters can browse the website without ads, allowing much faster speeds and a clean interface. Your comments will be instantly approved and you’ll have a direct line of communication with us from within your account dashboard. You can suggest new features and apps and you’ll be able to use them before they go live.
You can choose the level of your support.
Stay kind, vigilant and ready!