Detailed Information

Solar Activity

Solar activity was eruptive for July 10th, 2026 04.00 UT - July 11th, 2026 03.59 UT.
Solar activity was eruptive for July 11th, 2026 04.00 UT - July 12th, 2026 03.59 UT.
Solar activity was active for July 12th, 2026 04.00 UT - July 13th, 2026 03.59 UT.

A total of five flares were recorded, comprising four C-class flares and one M-class flare. No X-class flares were observed. The strongest event was an M1.1 flare, peaking at 08:11 UT, which originated from NOAA 14485. Associated with this flare activity, no solar radio bursts were reported. Two coronal mass ejections were detected; one on the western limb with a speed of 269 km/s and an angular width of 68 degrees, and another on the eastern limb with a speed of 155 km/s and an angular width of 8 degrees.

On the visible disk, SDO/HMI observations revealed four active regions: NOAA 14482, NOAA 14485, NOAA 14487, and NOAA 14488. Additionally, one H-alpha plage, NOAA 14481, was observed by BBSO. Two regions are due to return to the visible disk between 13 July and 15 July. Looking ahead, solar activity is predicted to remain active for the next 24 hours, with the Random Forest model forecasting a maximum flare class of M. 

Geomagnetic Activity

The geomagnetic activity was at active level on 10 July 2026 07UT - 11 July 2026 07UT.
The geomagnetic activity was at quiet level on 11 July 2026 07UT - 12 July 2026 07UT.
The geomagnetic activity was on quiet level for the last 24 hours.

The solar wind speed decrease from 595 km/s to 487 km/s, north-south component of interplanetary magnetic field fluctuate between -6.2 nT and 5.3 nT There was geoeffective coronal hole at western equator, while the others at north-east, south-east and central equator were not geoeffective. CME on 12 July 2026 14:48 UT was mainly errupted toward north-west with speed of 269 km/s and angular width of 68°. The CME was geoeffective and is likely to have not impact on next 24 hours.

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

 

 

 

 

Ionospheric Activity

Ionosphere was disturbed on moderate for July 10th, 2026 04.00 UT - July 11th, 2026 03.59 UT.
Ionosphere was disturbed on moderate for July 11th, 2026 04.00 UT - July 12th, 2026 03.59 UT.
Ionosphere was disturbed on moderate for July 12th, 2026 04.00 UT - July 13th, 2026 03.59 UT.

There was 240 minutes depression of foF2 lower than 30% of its median value for the last 24 hours. There was 60 minutes increment of fmin more than 30% of its median values. The Spread-F was detected for 120 minutes for the last 24 hours. There was 19 hours and 30 minutes 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 lower than 0.5 and the maximum TEC index value was at 56.23, 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 July 10th, 2026 04.00 UT - July 11th, 2026 03.59 UT was in normal level, based on ionospheric scintilation and TEC variation.
The error of the single frequency GPS positioning for July 11th, 2026 04.00 UT - July 12th, 2026 03.59 UT was in normal level, based on ionospheric scintilation and TEC variation.
The error of the single frequency GPS positioning for July 12th, 2026 04.00 UT - July 13th, 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 strong and Short Wave Fadeout (SWF) was on minor level for July 10th, 2026 04.00 UT - July 11th, 2026 03.59 UT.
MUF depression was strong and Short Wave Fadeout (SWF) was on moderate level for July 11th, 2026 04.00 UT - July 12th, 2026 03.59 UT.
MUF depression was strong and Short Wave Fadeout (SWF) was on moderate level for July 12th, 2026 04.00 UT - July 13th, 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 minor level due to the prediction of solar flare.

Satellites

The electron flux was at high level on 10 July 2026 07UT - 11 July 2026 07UT.
The electron flux was at high level on 11 July 2026 07UT - 12 July 2026 07UT.
The electron flux was on high level for the last 24 hours.

High level of electron flux is expected for the next 24 hours.

The flux of high-energy protons was quiet for July 10th, 2026 04.00 UT - July 11th, 2026 03.59 UT.
The flux of high-energy protons was quiet for July 11th, 2026 04.00 UT - July 12th, 2026 03.59 UT.
The flux of high-energy protons was quiet for July 12th, 2026 04.00 UT - July 13th, 2026 03.59 UT.

Based on today's conditon, the flux of high energy proton for the next 24 hours is predicted to be quiet.