Detailed Information

Solar Activity

Solar activity over the past 24 hours was active. A total of 4 solar flares were observed, comprising 3 C-class flares and 1 M-class flares. No X-class flares were observed. The strongest event was an M3.6 flare originating from NOAA 14493, which peaked at 6:35UT. Associated with this flare activity, 1 solar radio bursts of Type III were observed. Meanwhile, no Coronal Mass Ejections (CMEs) were detected.

On the visible disk, four active regions were identified by SDO/HMI: NOAA 14489, NOAA 14492, NOAA 14493, and NOAA 14494. Additionally, BBSO H-Alpha observations indicated two plages: NOAA 14490 and NOAA 14491. Looking beyond the visible disk, two active region is due to return between 23 and 25 July. For the next 24 hours, solar activity is predicted to be active, with the Random Forest model forecasting a maximum flare class of M.
 

Geomagnetic Activity

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

The solar wind speed increase from 271 km/s and 484 km/s, north-south component of interplanetary magnetic field fluctuate between -12.7 nT and 13.5 nT There was geoeffective coronal hole at central equator, while the others at north pole, eastern equator and north-east were not geoeffective.

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

Ionospheric Activity

Ionosphere activity for the last 24 hours could not be evaluated due to unavailable data.

The ionospheric activity regarding the foF2, fmin, Spread-F, and E-sporadis values for the last 24 hours could not be evaluated due to unavailable data from Pontianak station. However, the S4 index values (condition of ionospheric scintillation) was at quiet level (S4<0.5) and the maximum TEC index value was at quiet level (VTEC<125) with value of 63.8 TECU, both over Pontianak on the last 24 hours.

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

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 in normal level.

HF Radio Communication

HF Radio Communication MUF (Maximum Usable Frequency) depression and Short Wave Fadeout (SWF) for the last 24 hours could not be evaluated due to unavailable data from Pontianak Station.

The MUF depression on the next 24 hours is predicted in quiet level based on 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 low level for the last 24 hours.

Low 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.