Detailed Information

Solar Activity

Solar activity was eruptive over the past 24 hours. 

One C-class flare was observed, peaking at C1.0 at 19:29 UT from NOAA 14502. No M-class or X-class flares were observed. One Type III radio burst was detected, while no Type II or Type IV radio bursts were observed. Furthermore, no coronal mass ejections were observed during this period. On the visible disk, five active regions were identified by SDO/HMI: NOAA 14498, NOAA 14499, NOAA 14500, NOAA 14502, and NOAA 14503. There were no H-Alpha plages observed by BBSO. Two farside regions are expected to return to the visible disk between 07 August and 09 August. 

Based on todya's condition,
Solar activity for August 7th, 2026 04:00 UT - August 8th, 2026 03:59 UT is predicted to be eruptive.
Solar activity for August 8th, 2026 04:00 UT - August 9th, 2026 03:59 UT is predicted to be quiet.
Solar activity for August 9th, 2026 04:00 UT - August 10th, 2026 03:59 UT is predicted to be quiet.
 

Geomagnetic Activity

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

The solar wind speed decrease from 417 km/s to 270 km/s, north-south component of interplanetary magnetic field fluctuate between -3.3 nT and 3.2 nT. There was geoeffective coronal hole at central equator, while the others at north-east and eastern equator were not geoeffective.

Quiet level geomagnetic activity is expected for the next 24 hours.
Quiet level geomagnetic activity is expected for 08 August 2026 04UT - 09 August 2026 04UT.
Quiet level geomagnetic activity is expected for 09 August 2026 04UT - 10 August 2026 04UT.

Ionospheric Activity

The ionosphere was at a quiet level for the last 24 hours.

There was 15 minutes depression of foF2 lower than 30% of its median value. There was 15 minutes increment of fmin more than 30% of its median value. The Spread-F was not detected for the last 24 hours. There were 12 hours and 15 minutes of Sporadic-E that occurred in the night and daytime, with foEs values exceeding foF2 several times. The S4 index values (condition of ionospheric scintillation ) were less than 0.5, and the maximum TEC index value was 61.88, both over Pontianak.

The ionosphere activity for the next 24 hours is predicted to be quiet.
The ionosphere activity for 08 August 2026 04UT - 09 August 2026 04UT is predicted to be quiet.
The ionosphere activity for 09 August 2026 04UT - 10 August 2026 04UT 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.
the probability of error positioning for 08 August 2026 04UT - 09 August 2026 04UT is predicted at a normal level.
the probability of error positioning for 09 August 2026 04UT - 10 August 2026 04UT is predicted at a normal level.

HF Radio Communication

MUF depression was at a quiet level, and Short Wave Fadeout (SWF) was at a quiet 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 MUF depression for 08 August 2026 04UT - 09 August 2026 04UT is predicted on a quiet level, due to previous geomagnetic activity.
The MUF depression for 09 August 2026 04UT - 10 August 2026 04UT is predicted on a quiet level, due to previous geomagnetic activity.

The SWF for the next 24 hours is predicted at a quiet level due to the prediction of a solar flare.
The SWF for 08 August 2026 04UT - 09 August 2026 04UT is predicted at a quiet level due to the prediction of a solar flare.
The SWF for 09 August 2026 04UT - 10 August 2026 04UT is predicted at a quiet 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.
Low level of electron flux is expected for 08 August 2026 04UT - 09 August 2026 04UT.
Low level of electron flux is expected for 09 August 2026 04UT - 10 August 2026 04UT.

The 10 MeV proton flux was at quiet levels over the past 24 hours. 

Based on these conditions, 
The proton flux is expected to be quiet for August 7th, 2026 04:00 UT - August 8th, 2026 03:59 UT.
The proton flux is expected to be quiet for August 8th, 2026 04:00 UT - August 9th, 2026 03:59 UT.
The proton flux is expected to be quiet for August 9th, 2026 04:00 UT - August 10th, 2026 03:59 UT.