Detailed Information

Solar Activity

Solar activity over the past 24 hours was eruptive. One C-class flare was observed, with no M-class or X-class flares reported. The most significant event was a C1.0 flare peaking at 6:13UT from NOAA 14561. No Type II, Type III, or Type IV solar radio bursts were observed. One coronal mass ejection was detected, originating from the eastern limb with an estimated speed of 350 km/s and an angular width of 16 degrees. No western limb CMEs were observed.

On the visible disk, one active region was identified by SDO/HMI as NOAA 14563. Additionally, one H-alpha plage was observed by BBSO, designated as NOAA 14562. Looking at the farside, one active region is anticipated to return to the visible disk between October 29 and October 31. For the next 24 hours, solar activity is predicted to be quiet, with the Random Forest model forecasting no flares.

Geomagnetic Activity

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

The solar wind speed decrease from 441 km/s to 358 km/s. The north-south component of interplanetary magnetic field fluctuate between -7.6 nT and 8.8 nT. Corona holes at eastern, northern, and southern were not geoeffective, meanwhile at western equator was geoeffective. CME on 28 October 2026 20:48 UT with speed of 258 km/s and angular width of 30°. The CME was not geoeffective and is likely to have not impact on next 24 hours.

Quiet level geomagnetic activity is expected for the next 24 hours.

Ionospheric Activity

Ionosfer dalam kondisi terganggu pada level Rendah dalam 24 jam terakhir.

Terjadi penurunan nilai foF2 melebihi 30% dari median bulanannya selama 45 menit. Terjadi peningkatan fmin melebihi 30% dari nilai mediannya selama 90 menit. Peristiwa Spread-F terjadi selama 330 menit. Lapisan E-Sporadis terjadi pada siang dan malam hari selama 645 menit dengan nilai foEs lebih tinggi dari nilai foF2 selama 15 menit. Indeks sintilasi ionosfer (S4) berada pada kondisi Tenang (S4 < 0.5) dalam 24 jam terakhir di atas Agam. TEC berada pada level Tenang (VTEC < 125) dalam 24 jam terakhir di atas Agam.

Aktivitas ionosfer untuk 24 jam mendatang diprediksikan dalam level Tenang.

Navigation

Dalam 24 jam terakhir, kesalahan penentuan posisi menggunakan GPS frekuensi tunggal dalam skala Normal berdasarkan variasi sintilasi ionosfer dan TEC.

Probabilitas kesalahan penentuan posisi untuk 24 jam mendatang diprakirakan pada level Normal berdasarkan variasi sintilasi ionosfer dan TEC.

HF Radio Communication

Dalam 24 jam terakhir, MUF (Maximum Usable Frequency) Depression pada level Menengah dan SWF (Short Wave Fadeout) pada level Menengah.

MUF Depression untuk 24 jam mendatang diperkirakan pada level Tenang berdasarkan prediksi aktivitas geomagnet.

SWF untuk 24 jam mendatang diprakirakan pada level Tenang berdasarkan prediksi aktivitas Matahari.

Satellites

The electron flux was on high level for the last 24 hours.
High level of elektron 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 persist for the next 24 hours.