Detailed Information

Solar Activity

Solar activity was major flare in the last 24 hours.

There were 19 flares with 12 C-class flares, 6 M-class flares and 1 X-class flares in the last 24 hours. The maximum flare class was X1.1 from NOAA 4298 peaked at 05:01 UT. There were 4 solar radioburst all of which are type-III occurred in the last 24 hours. There was 9 CME event in the last 24 hours. The east-directed CME has the highest median velocity of 317 km/s with an angular width of 24 degrees and the west-directed CME has the highest median velocity of 1384 km/s with an angular width of 50 degrees. No plage in the solar disk but latest SDO/HMI Intensitygram data shows 8 active regions (NOAA 4294, 4295, 4296, 4298, 4299, 4300, 4303, and 4304).
Based on farside data shows no active region is going to appear from the east limb of the Solar disk in the next 24 hours.

Based on today's condition, solar activity for the next 24 hours is predicted to be major flare.

Geomagnetic Activity

The geomagnetic activity was on quiet level for the last 24 hours.
The solar wind speed stable around 492 km/s, north-south component of interplanetary magnetic field decrease from 8.4 nT to -4.1 nT. Coronal holes at south-east and eastern equator were not geoeffective. CME on 08 December 2025 22:24 UT was mainly errupted toward west with speed of 1384 km/s and angular width of 50°. The CME was geoeffective and is likely to have impact on next 24 hours.

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

Ionospheric Activity

Ionosphere activity for the last 24 hours cannot be evaluated.

The ionospheric activity regarding the foF2, fmin, Spread-F, and E-sporadis values for the last 24 hours cannot be evaluated due to problems with the CADI station. The S4 index values (condition of ionospheric scintillation) was less than 0.5 and the maximum TEC index value was at 79.97, both over Pontianak.

The ionosphere activity is predicted to be on quiet level for the next 24 hours.

Navigation

The error of the single frequency GPS positioning for the last 24 hours was in normal level, based on ionospheric scintilation and TEC variation.

Based on ionospheric scintilation and TEC variation, the probability of error positioning for the next 24 hours is predicted at a normal level.

HF Radio Communication

MUF depression and Short Wave Fadeout (SWF) for the last 24 hours cannot be evaluated due to problems with the CADI station.

The MUF depression for the next 24 hours is predicted on quiet level, due to previous geomagnetic activity.

The SWF for the next 24 hours is predicted in strong level due to the prediction of solar flare.

Satellites

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 flux of high-energy protons was quiet for the last 24 hours.

Based on today's conditon, the flux of high energy proton is predicted to be in quiet condition for the next 24 hours.