Detailed Information

Solar Activity

Solar activity in the past 24 hours was active.

Eighteen flares consisting of seventeen C-class flares and one M-class flare occurred in the past 24 hours. The strongest was an M1.0 flare peaked at 18:51 UT from NOAA 14513. No solar radio bursts nor CMEs were recorded during this period. The latest SDO/HMI intensitygram data show five active regions (NOAA 14506, 14507, 14508, 14510, and 14513), while the latest BBSO H-alpha data show two H-alpha plages (NOAA 14511 and 14512) 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 active level for the last 24 hours.

The solar wind speed fluctuated between 541 km/s and 614 km/s, while the north-south component of the interplanetary magnetic field fluctuated between -7.5 nT and 6.2 nT. There were geoeffective coronal holes at the northwest and central equator, while the others at the northeast and northwest were not geoeffective. 

An active level of geomagnetic activity is expected for the next 24 hours.

Ionospheric Activity

Ionosphere was in quiet conditions on 24 hours.

There was no depression in the foF2 of its median value in the last 24 hours. There was an increment in fmin exceeding 30% of its median value for 15 minutes in the last 24 hours. There was no a Spread-F Event in the last 24 hours. Sporadic E-layer during the day and night for 1,290 minutes with foEs values higher than foF2 values in the last 24 hours. The ionospheric scintillation index (S4) above Pontianak was less than 0.5 (quiet) and the maximum TEC value was 65.2 (quiet) both observed above Pontianak.

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

Navigation

The error of the single frequency GPS positioning for the next 24 hours was on 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 on normal level.

HF Radio Communication

In the last 24 hours, the Maximum Usable Frequency (MUF) Depression was at a quiet level, and the Short-Wave Fadeout (SWF) was at a quiet level.

The MUF depression for the next 24 hours is predicted at 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 at a low level for the last 24 hours.

A 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.