
Center for Space Research
The National Research and Innovation Agency
BRIN - Indonesia
Issued : 2026 November 11 0800 UTC
Forecast Valid For 24 Hours
Solar activity over the past 24 hours was eruptive. Thirteen C-class flares were observed, with no M-class or X-class flares occurring. The most significant event was a C9.3 flare originating from NOAA 14566, peaking at 8:34 UT. No Type II, Type III, or Type IV solar radio bursts were reported. One coronal mass ejection was detected. This event was observed from the east limb with a speed of 129 km/s and an angular width of 14 degrees.
On the visible disk, SDO/HMI observed five active regions: NOAA 14565, NOAA 14566, NOAA 14568, NOAA 14572, and NOAA 14573. Additionally, three H-alpha plages were identified by BBSO: NOAA 14569, NOAA 14570, and NOAA 14571. One active region is expected to return from the farside between 11 November and 13 November. Looking ahead, solar activity for the next 24 hours is predicted to be a Major Flare, driven by a Random Forest model prediction of an X-class flare.
The geomagnetic activity was on quiet level for the last 24 hours.
The solar wind speed decrease from 788 km/s to 618 km/s, north-south component of interplanetary magnetic field fluctuate between -3.5 nT and 4.9 nT Corona hole at was not geoeffective.
Quiet level geomagnetic activity is expected for the next 24 hours.
Ionosphere was in Quiet level for the last 24 hours.
There was no depression of foF2 lower than 30% of its median values.There was no increment of fmin more than 30% of its median values. The Spread-F occured for 15 minutes. The Sporadic E layer occured in the night and daytime for 675 minutes with foEs value exceeded the foF2 for 255 minutes. The S4 index values (condition of ionospheric scintillation) was on Quiet (S4 < 0.5) level last 24 hours over Agam. The TEC values was on Quiet (VTEC < 125) level last 24 hours over Agam.
The ionosphere activity for the next 24 hours is predicted to be Quiet.
For the last 24 hours, the error of the single frequency GPS positioning was on Normal level.
The probability of error positioning for the next 24 hours is predicted to be Normal, based on scintillation and TEC variations.
The MUF(Maximum Usable Frequency) depression was in Quiet condition and the SWF (Short Wave Fadeout) was in Quiet for the last 24 hours.
The MUF depression for the next 24 hours is predicted to be Quiet, based on prediction of geomagnetic activity.
The SWF for the next 24 hours is predicted to be Strong, based on prediction of Solar activity.
The electron flux was on high level for the last 24 hours.
High level of electron flux is expected for the next 24 hours.
The 10 MeV proton flux remained quiet over the past 24 hours. These quiet conditions are predicted to continue for the next 24 hours.