Detailed Information

Solar Activity

Solar activity was eruptive for August 14th, 2025 04.00 UT - August 15th, 2026 03.59 UT.
Solar activity was eruptive for August 15th, 2026 04.00 UT - August 16th, 2026 03.59 UT.
Solar activity was eruptive for August 16th, 2026 04.00 UT - August 17th, 2026 03.59 UT.
Solar activity was eruptive for August 17th, 2026 04.00 UT - August 18th, 2026 03.59 UT.

Seven C-class flare was observed, peaking as a C3.2 from NOAA 14510 at 17:47 UT. No M-class or X-class flares were observed. Associated with this activity, three solar radio bursts type III were observed. Two coronal mass ejection was detected, originating from the east limb with an estimated speed of 486 kilometers per second and an angular width of 88 degrees and no CME detected from the west. On the visible disk, four active regions were identified by SDO/HMI: NOAA 14506, NOAA 14507, NOAA 14508, and NOAA 14510. Two H-alpha plages were observed by BBSO, NOAA 14511 and NOAA 14512. Looking ahead, two farside region is due to return to the visible disk between 18 August and 20 August. Based on today condition, solar activity is predicted to remain eruptive.

Geomagnetic Activity

The geomagnetic activity was at active level on 14 August 2026 07UT - 15 August 2026 07UT.
The geomagnetic activity was at quiet level on 15 August 2026 07UT - 16 August 2026 07UT.
The geomagnetic activity was at quiet level on 16 August 2026 07UT - 17 August 2026 07UT.
The geomagnetic activity was on active level for the last 24 hours.

The solar wind speed increase from 291 km/s and 347 km/s, north-south component of interplanetary magnetic field fluctuate between -5.0 nT and 4.0 nT There were geoeffective coronal holes at eastern equator and western equator, while the others at north-east, north pole and north-west were not geoeffective.

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

Ionospheric Activity

Ionosphere was quiet for August 14th, 2026 04.00 UT - August 15th, 2026 03.59 UT.
Ionosphere was quiet for August 15th, 2026 04.00 UT - August 16th, 2026 03.59 UT.
Ionosphere was quiet for August 16th, 2026 04.00 UT - August 17th, 2026 03.59 UT.
Ionosphere was quiet for August 17th, 2026 04.00 UT - August 18th, 2026 03.59 UT.

There was no depression of foF2 lower than 30% of its median value. There was 165 minutes increment of fmin more than 30% of its median values. The Spread-F was detected for 15 minutes for the last 24 hours. There was 16 hours Sporadic-E occurred in the night and daytime with foEs value exceeded the foF2 for several times. The S4 index values (condition of ionospheric scintillation ) was less than 0.5 and the maximum TEC index value was at 61.23, both over Pontianak.

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

Navigation

The error of the single frequency GPS positioning for August 14th, 2026 04.00 UT - August 15th, 2026 03.59 UT was in normal level, based on ionospheric scintilation and TEC variation.
The error of the single frequency GPS positioning for August 15th, 2026 04.00 UT - August 16th, 2026 03.59 UT was in normal level, based on ionospheric scintilation and TEC variation.
The error of the single frequency GPS positioning for August 16th, 2026 04.00 UT - August 17th, 2026 03.59 UT was in normal level, based on ionospheric scintilation and TEC variation.
The error of the single frequency GPS positioning for August 17th, 2026 04.00 UT - August 18th, 2026 03.59 UT was in normal level, based on ionospheric scintilation and TEC variation.

Based on ionospheric scintilation 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 in quiet level and Short Wave Fadeout (SWF) was in minor level for August 14th, 2026 04.00 UT - August 15th, 2026 03.59 UT.
MUF depression was in quiet level and Short Wave Fadeout (SWF) was in strong level for August 15th, 2026 04.00 UT - August 16th, 2026 03.59 UT.
MUF depression was in quiet level and Short Wave Fadeout (SWF) was in strong level for August 16th, 2026 04.00 UT - August 17th, 2026 03.59 UT.
MUF depression was in quiet level and Short Wave Fadeout (SWF) was in strong level for August 17th, 2026 04.00 UT - August 18th, 2026 03.59 UT.

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

The SWF for the next 24 hours is predicted on quiet level due to the prediction of solar flare.

Satellites

The electron flux was at low level on 14 August 2026 07UT - 15 August 2026 07UT.
The electron flux was at low level on 15 August 2026 07UT - 16 August 2026 07UT.
The electron flux was at low level on 16 August 2026 07UT - 17 August 2026 07UT.
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 was quiet for August 14th, 2025 04.00 UT - August 15th, 2026 03.59 UT.
The flux of high-energy protons was quiet for August 15th, 2026 04.00 UT - August 16th, 2026 03.59 UT.
The flux of high-energy protons was quiet for August 16th, 2026 04.00 UT - August 17th, 2026 03.59 UT.
The flux of high-energy protons was quiet for August 17th, 2026 04.00 UT - August 18th, 2026 03.59 UT.

These quiet conditions are expected to persist for the next 24 hours.