Detailed Information

Solar Activity

Solar activity over the past 24 hours was active. A total of 15 solar flares were observed, comprising 13 C-class flares and 2 M-class flares. No X-class flares were observed. The strongest event was an M1.4 flare originating from NOAA 14479, which peaked at 21:40UT. Associated with this flare activity, no solar radio bursts of Type II, Type III, or Type IV were observed. Meanwhile, four Coronal Mass Ejections (CMEs) were detected. One CME emerged from the west limb with an approximate speed of 480 kilometers per second and an angular width of 8 degrees. Another CME originated from the east limb, traveling at roughly 422 kilometers per second with an angular width of 40 degrees; details for the remaining two CMEs were not provided.

On the visible disk, five active regions were identified by SDO/HMI: NOAA 14475, NOAA 14477, NOAA 14478, NOAA 14479, and NOAA 14480. Additionally, BBSO H-Alpha observations indicated three plages: NOAA 14472, NOAA 14473, and NOAA 14476. Looking beyond the visible disk, one active region is due to return between 30 June and 02 July. For the next 24 hours, the overall solar activity prediction is for Major Flare activity, with the Random Forest model predicting a maximum flare class of X.

Geomagnetic Activity

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

The solar wind speed fluctuate between 423 km/s and 523 km/s, north-south component of interplanetary magnetic field stable around 0.3 nT Coronal holes at south-east were not geoeffective. CME on 29 June 2026 09:48 UT was mainly errupted toward north-west with speed of 480 km/s and angular width of 8°. The CME was 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 was in quite conditions on 24 hours.
There was no depression in the foF2 from its median in the last 24 hours. There was increment in fmin exceeding 30% of its median value for 195 minutes in the last 24 hours. There was Spread-F event for 585 minutes in the last 24 hours. Sporadic E-layer during the day and night for 1200 minutes with foEs values ​​higher than foF2 values ​​in the last 24 hours. The ionospheric scintillation index (S4) above Pontianak, had a value below 0.5 at a quite level and the maximum TEC value was 67.13 both observed above Pontianak.
The ionosphere activity is predicted to be quite for the next 24 hours.

Navigation

The error of the single frequency GPS positioning for the next 24 hours was on normal level, based on ionospheric scintillation and TEC variation.
Based on ionospheric scintillation and TEC variation, the probability of error positioning for the next 24 hours is predicted to be on normal level.

HF Radio Communication

In the last 24 hours, the Maximum Usable Frequency (MUF) Depression was at a quite level, and the Short-Wave Fadeout (SWF) was at a strong level.
The MUF depression for the next 24 hours is predicted at a quite level, due to previous geomagnetic activity.
The SWF for the next 24 hours is predicted at a strong level due to the prediction of a 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 10 MeV proton flux remained Quiet over the past 24 hours.

Based on these conditions, the proton flux is predicted to remain Quiet for the next 24 hours.