Detailed Information

Solar Activity

Solar activity was eruptive over the past 24 hours.

Two C-class flares were observed, with no M-class or X-class flares. The most significant event was a C1.4 flare from NOAA 14485, peaking at 17:47 UT. No solar radio bursts were observed. Furthermore, no coronal mass ejections were detected. On the visible disk, four active regions were identified by SDO/HMI: NOAA 14482, NOAA 14485, NOAA 14487, and NOAA 14489. BBSO H-alpha observations revealed two plages: NOAA 14481 and NOAA 14488. Looking beyond the visible disk, one farside region is due to return between 14 July and 16 July.

Looking ahead, solar activity is predicted to be eruptive for the next 24 hours, with the Random Forest model predicting a maximum flare class of M.

Geomagnetic Activity

The geomagnetic activity was at an active level for the last 24 hours.

The solar wind speed decreases from 556 km/s to 437 km/s. The north-south component of the interplanetary magnetic field decreases from 3.4 nT to -7.2 nT. There was a geoeffective coronal hole at the central equator, while the others at the south, north and eastern equator were not geoeffective. CME on 13 July 2026 19:24 UT was mainly erupted toward the west with a speed of 397 km/s and an angular width of 66°. The CME was not geoeffective and is likely to have no impact on the next 24 hours.

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

Ionospheric Activity

The ionosphere was in Minor conditions for the last 24 hours.

There was a depression of foF2 lower than 30% of its median value for 30 minutes for the last 24 hours. There was no increment of fmin more than 30% of its median value for the last 24 hours. There was The Spread-F occurred For 195 minutes over the last 24 hours. The Sporadic-E occurred in the night and daytime for 1005 minutes with foEs value exceeding the foF2 for the last 24 hours.

S4 index values (condition of ionospheric scintillation ) were less than 0.5 over Pontianak, is predicted Quite Level

The ionosphere activity for the next 24 hours is predicted to be Quiet

Navigation

Based on TEC 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 in the next 24 hours is predicted at a Normal level.

HF Radio Communication

MUF depression was in Minor condition, and Short Wave Fadeout (SWF) was in Quiet for the last 24 hours.

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

The SWF for the next 24 hours is predicted in Quiet 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.

This quiet condition is predicted to continue for the next 24 hours.