Detailed Information

Solar Activity

Solar activity over the past 24 hours was eruptive.

Six C-class flares were observed, with no M-class or X-class flares detected. The most significant event was a C4.5 flare from NOAA 14384, which peaked at 4:38UT. Associated with this flare activity, five Type III radio bursts were detected, while no Type II or Type IV radio bursts were observed. Additionally, five coronal mass ejections were detected, with those propagating from the western limb exhibiting a median speed of 844 km/s and a median angular width of 8 degrees. No CMEs were observed propagating from the eastern limb. On the visible disk, five active regions were identified by SDO/HMI: NOAA 14378, NOAA 14380, NOAA 14381, NOAA 14383, and NOAA 14384. BBSO H-alpha observations showed two plages, NOAA 14379 and NOAA 14382. Looking ahead, no active regions are currently expected to return from the farside in the next 24 hours.

Solar activity is predicted to be eruptive over the next 24 hours

Geomagnetic Activity

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

The solar wind speed increased from 330 km/s to 440 km/s. The north-south component of the interplanetary magnetic field fluctuated between -4.1 nT and 4.5 nT. There was a geoeffective coronal hole at the north pole, while the others at the south pole, north pole, eastern equator, and north-east were not geoeffective. CME on 02 March 2026 10:36 UT mainly erupted toward west with a speed of 453 km/s and an angular width of 36°. The CME was geoeffective and is likely to have not impact on the next 24 hours.

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

Ionospheric Activity

Ionosphere was in quiet conditions for the last 24 hours.

There was no depression of foF2 lower than 30% of its median value. There was an increment of fmin more than 30% of its median values for 30 minutes. The Spread-F occurred for 495 minutes duration. The Sporadic-E occurred in the night and daytime with foEs value exceeding the foF2 for 660 minutes. The S4 index values (condition of ionospheric scintillation) were 0.5 < s4 < 0.8 (moderate). The TEC was less than 120 TECU. Both are observed over Pontianak.

The ionosphere activity in the next 24 hours is predicted to be quiet.
 

Navigation

Based on TEC and scintillation, the error of the single-frequency GPS positioning for the last 24 hours was in normal level.

Based on ionospheric scintillation 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 quiet condition and Short Wave Fadeout (SWF) was in minor condition for the last 24 hours.

 

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

The SWF for the next 24 hours is predicted at a quiet level due to the prediction of the solar flare.

Satellites

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

Very high level of electron flux is expected for the next 24 hours.

The 10 MeV proton flux remained quiet over the past 24 hours.
These quiet conditions are predicted to continue for the next 24 hours.