Detailed Information

Solar Activity

Solar activity was active in the last 24 hours.

There were 20 flares with 17 C-class flares and 3 M-class flares in the last 24 hours. The maximum flare class was M1.6 from NOAA 4294 peaked at 7:47UT. There were 1 solar radioburst all of which are type-III occurred in the last 24 hours. There was 2 CME event in the last 24 hours. The west-directed CME has the highest median velocity of 1230 km/s with an angular width of 8 degrees and no east-directed CME are observed. The latest SDO/HMI Intensitygram data shows 8 active regions (NOAA 4294, 4296, 4298, 4299, 4300, 4303, 4304, and 4305) and the latest BBSO H-Alpha data shows 1 H-Alpha plages (NOAA 4295). Based on farside data shows 1 Regions Due to Return 10 Dec to 12 Dec from the east limb of the Solar disk.

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

Geomagnetic Activity

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


The solar wind speed increase from 290 km/s and 594 km/s, north-south component of interplanetary magnetic field fluctuate between -4.8 nT and 4.9 nT Coronal holes at north-east and eastern equator were not geoeffective. CME on 09 December 2025 04:48 UT was mainly errupted toward west with speed of 1230 km/s and angular width of 8°. 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

The ionospheric activity for the last 24 hours cannot be evaluated due to unavailable data observation. In the last 24 hours, the S4 index values (condition of ionospheric scintillation) were lower than 0.5, and the maximum TEC index value was at 79.64, both over Pontianak. The ionosphere activity on the next 24 hours is predicted to be Quiet.

Navigation

Based on TEC variation and scintilation, the error of the single-frequency GPS positioning for the last 24 hours was in normal level. Based on ionospheric scintilation and TEC variation, the probability of error positioning on the next 24 hours is predicted on normal level

HF Radio Communication

The MUF depression and Short Wave Fadeout (SWF) for the last 24 hours cannot be evaluated due to unavailable data observation.

 

The MUF depression on the next 24 hours is predicted in Quiet level due to previous of geomagnetic activity.

 

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

 

Satellites

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

Low level of elektron 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 condition, the flux of high-energy protons for the next 24 hours is predicted to be quiet.