Detailed Information

Solar Activity

Solar activity in the past 24 hours was eruptive.

Three C-class flares occurred in the past 24 hours. The strongest was C1.6 flare peaked at 16:19 UT from NOAA 14499. There is one type III solar radio burst, but no CMEs were observed during this period. The latest SDO/HMI intensitygram data show nine active regions (NOAA 14492, 14494, 14495, 14496, 14497, 14498, 14499, 14500, and 14501), while the latest BBSO H-alpha data show no H-alpha plages on the solar disk. The GONG Calibrated Farside Map indicates that no new active regions are expected to appear on the solar limb in the next 24 hours.

Based on today's conditions, solar activity for the next 24 hours is predicted to be active.

Geomagnetic Activity

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

The solar wind speed fluctuate between 320 km/s and 411 km/s, north-south component of interplanetary magnetic field fluctuate between -5.6 nT and 6.2 nT. Coronal holes at south pole, north pole and eastern equator were not geoeffective.

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

 

 

Ionospheric Activity

The ionosphere was at a quiet level 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 value for 75 minutes. The Spread-F was not detected for the last 24 hours. There were 795 minutes when Sporadic-E occurred in the night and daytime with foEs values exceeding foF2 several times. The S4 index value (condition of ionospheric scintillation) was less than 0.5 (quiet) for the last 24 hours over Pontianak. The maximum TEC index was 66.92 (quiet) for the last 24 hours.

The ionosphere activity for 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 at a normal level.

Based on ionospheric scintillation and TEC variation, the probability of error positioning for the next 24 hours is predicted at a normal level.

HF Radio Communication

MUF depression was at a quiet level, and Short Wave Fadeout (SWF) was at a moderate level for the last 24 hours.

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

The SWF for the next 24 hours is predicted at a minor level due to the prediction of a 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 flux of high-energy protons in the past 24 hours was quiet.

Based on today's conditions, the flux of high-energy protons for the next 24 hours is predicted to be quiet.