Detailed Information

Solar Activity

Solar activity over the past 24 hours was eruptive. Four C-class solar flares were observed, with no M-class or X-class flares. The most significant event was a C1.1 flare from NOAA 14405, peaking at 21:23 UT. Associated with this flare activity, two Type III solar radio bursts were detected, while no Type II or Type IV radio bursts were observed. One coronal mass ejection was observed, originating from the eastern limb with a speed of 856 kilometers per second and an angular width of 6 degrees. No CMEs were observed from the western limb.

On the visible disk, ten active regions were identified by SDO/HMI: NOAA 14399, NOAA 14401, NOAA 14402, NOAA 14403, NOAA 14404, NOAA 14405, NOAA 14406, NOAA 14407, NOAA 14408, and NOAA 14409. Meanwhile, no H-alpha plages were observed by BBSO. Looking to the farside, one active region is described as due to return between 01 April and 03 April. For the next 24 hours, solar activity is predicted to remain eruptive, with the Random Forest model forecasting a maximum C-class flare.
 

Geomagnetic Activity

The geomagnetic activity was on quiet level for the last 24 hours.
The solar wind speed decrease from 526 km/s to 397 km/s, north-south component of interplanetary magnetic field fluctuate between -7.5 nT and 7.6 nT. There was geoeffective coronal hole at eastern equator, while the others at south-west and north-east were not geoeffective.

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 increment of fmin more than 30% of its median values for 30 minutes. The Spread-F occured for 390 minute for the last 24 hours. The Sporadic-E occurred in the night and daytime with foEs value exceeded the foF2 for several times for 735 minutes. The S4 index values (condition of ionospheric scintillation ) was over than 0.8 and the maximum TEC index value was at 101.32 both over Pontianak for the last 24 hours.

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

Navigation

The error of the single-frequency GPS positioning for the last 24 hours was disturbed at a slight 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 disturbed at a slight level.

HF Radio Communication

Maximum Usable Frequency (MUF) Depression was in quiet condition and the Short Wave Fadeout (SWF) was in minor for the last 24 hours.

The MUF Depression for the next is predicted to be at quiet levels based on past geomagnetic activity.

The SWF for the next 24 hours is forecasted at quiet based on predicted solar flare classes.

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.