Detailed Information

Solar Activity

Solar activity in the past 24 hours was eruptive.

There was only one C-class flares that occurred in the past 24 hours. It was a C1.0 flare from NOAA 14409, peaking at 05:15 UT. Two type III solar radio bursts were detected. No CMEs were observed during this period. The latest SDO/HMI intensitygram data show seven active regions (NOAA 14404, 14405, 14406, 14408, 14409, 14411, and 14412), while the latest BBSO H-alpha data show one H-alpha plage (NOAA 14407) 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 eruptive.

Geomagnetic Activity

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

The solar wind speed decreased from 622 km/s to 447 km/s, while the north-south component of the interplanetary magnetic field stable around 0.6 nT. There was one geoeffective coronal holes at the north pole, while the others at the eastern equator, northwest, south pole, and northeast were not geoeffective. 

A quiet level of 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 not occured for the last 24 hours. The Sporadic-E occurred in the night and daytime with foEs value exceeded the foF2 for several times for 810 minutes. The S4 index values (condition of ionospheric scintillation ) was less than 0.4 and the maximum TEC index value was at 93.43 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 normal 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 normal 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 at a high level for the last 24 hours.

A high 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.