Detailed Information

Solar Activity

Solar activity over the past 24 hours was eruptive. Five C-class flares were observed, and no M-class or X-class flares were reported. The most significant event was a C2.8 flare peaking at 18:40 UT from NOAA 14561. There were no Type II, Type III, or Type IV solar radio bursts reported. Four coronal mass ejections were detected, with one west-directed event recorded at a speed of 403 km/s and an angular width of 38 degrees. While the eawt-directed event recorded at a speed of 298 km/s and an angular width of 82 degrees. There were no east-directed coronal mass ejections.

On the visible disk, SDO/HMI instruments detected two active regions, NOAA 14561 and NOAA 14562. No BBSO H-Alpha plages were observed. From the farside, one region is expected to return between 27 October and 29 October. Looking ahead, solar activity is predicted to be quiet for the next 24 hours, with the Random Forest model predicting no flares.

Geomagnetic Activity

The geomagnetic activity was on quiet level for the last 24 hours.

The solar wind speed increased from 317 km/s to 386 km/s, while the north-south component of the interplanetary magnetic field fluctuated between -7.32 nT and 7.85 nT. There were two geoeffective coronal holes at the eastern equator and the northwest, while the other at the south pole was not geoeffective. CME on 26 October at 09:00 was mainly erupted toward the southwest with the speed of 403 km/s and angular width of 38°. The CME was geoeffective and is likely have no impact in the next 24 hours.

A quiet level of geomagnetic activity is expected for the next 24 hours.

Ionospheric Activity

Ionosphere was in Quiet level for the last 24 hours.

There was depression of foF2 lower than 30% of its median values for 15 minutes.There was increment of fmin more than 30% of its median values for 120 minutes. The Spread-F occured for 210 minutes. The Sporadic E layer occured in the night and daytime for 510 minutes with foEs value exceeded the foF2 for 75 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.

Navigation

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.

HF Radio Communication

The MUF(Maximum Usable Frequency) depression was in Quiet condition and the SWF (Short Wave Fadeout) was in Moderate 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 Quiet, based on prediction of Solar activity.

Satellites

The electron flux was at a high level for the last 24 hours.

A 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 expected to continue for the next 24 hours.