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 were C7.2 flares peaked at 07:48 UT from NOAA 14479. No solar radio bursts were detected, whereas five CMEs were observed during this period. The west-directed CMEs had the highest median velocity of 822 km/s and an angular width of 32°, while the east-directed CMEs had the highest median velocity of 330 km/s and an angular width of 74°. The latest SDO/HMI intensitygram data show five active regions (NOAA 14478, 14479, 14481, 14482, and 14485), while the latest BBSO H-alpha data show two H-alpha plages (NOAA 14483 and 14484) on the solar disk. The GONG Calibrated Farside Map indicates that one new active region is 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 minor storm level for the last 24 hours.

The solar wind speed decreased from 540 km/s to 381 km/s, while the north-south component of the interplanetary magnetic field fluctuated between -4.5 nT and 3.2 nT. There was one geoeffective coronal hole at the central equator, while the others at the eastern equator and southwest were not geoeffective. The CME on 6 July at 17:36 UT was mainly erupted toward the west with the speed of 882 km/s and an angular width of 32°. The CME was geoeffective and is likely to have no impact in the next 24 hours.

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

Ionospheric Activity

Ionosfer 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 a Spread-F Event for 165 minutes in the last 24 hours. Sporadic E-layer during the day and night for 1,230 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 64.61 (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 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.