Detailed Information

Solar Activity

Solar activity over the past 24 hours was eruptive, with one C-class flare observed. There were no M-class or X-class flares. The most significant event was a C2.7 flare from NOAA 14485, peaking at 7:13UT. Associated with this activity, there were no Type II, Type III, or Type IV solar radio bursts reported. Three coronal mass ejections were detected, with observed characteristics including a western limb event at 563 km/s with an angular width of 18 degrees, and an eastern limb event at 244 km/s with an angular width of 32 degrees.

On the visible disk, five active regions were identified by SDO/HMI: NOAA 14481, NOAA 14482, NOAA 14485, NOAA 14486, and NOAA 14487. Additionally, BBSO H-Alpha observations revealed two plages: NOAA 14483 and NOAA 14484. No farside regions were observed returning to the visible disk. 

Based on today's conditions,
solar activity for 10 july, 04:00 UT–11 july, 03:59 UT is predicted to be active,
solar activity for 11 july, 04:00 UT–12 july, 03:59 UT is predicted to be eruptive,
solar activity for 12 july, 04:00 UT–13 july, 03:59 UT is predicted to be eruptive,
with the Random Forest model.

Geomagnetic Activity

The geomagnetic activity was on active level for the last 24 hours.

The solar wind speed increase from 332 km/s and 433 km/s, north-south component of interplanetary magnetic field increase from -8.1 nT to 4.7 nT. There were geoeffective coronal holes at western equator and eastern equator, while the others at and north-east were not geoeffective. CME on 09 July 2026 21:00 UT was mainly errupted toward west with speed of 563 km/s and angular width of 18°. The CME was geoeffective and is likely to have impact on 13 July 2026.

Active level geomagnetic activity is expected for the next 24 hours.
Quiet level geomagnetic activity is expected for 11 July 2026 04.00UT - 12 July 2026 03.59UT.
Quiet level geomagnetic activity is expected for 12 July 2026 04.00UT - 13 July 2026 03.59UT.

Ionospheric Activity

The ionosphere was on moderate level for the last 24 hours.

There was depression of foF2 lower than 30% of its median value for 360 minutes. There was no increment of fmin more than 30% of its median values. There was no Spread-F layer. There was  Sporadic-E for 1155 minutes in the night and daytime with foEs value exceeding the foF2 value. The S4 index values (condition of ionospheric scintillation) was on quiet level (S4<0,5) on the last 24 hours over Pontianak. TEC index was on quiet level (VTEC<125) on the last 24 hours over Pontianak.

The ionosphere activity on 10 July 2026, 04:00 UT - 11 July 2026, 03:59 UT is predicted to be minor.

The ionosphere activity on 11 July 2026, 04:00 UT - 12 July 2026, 03:59 UT is predicted to be minor.

The ionosphere activity on 12 July 2026, 04:00 UT - 13 July 2026, 03:59 UT is predicted to be quiet.

Navigation

Based on TEC and scintilation , the error of the single frequency GPS positioning for  the last 24 hours was in normal level.

Based on ionospheric scintilation and TEC variation, the probability of error positioning on 10 July 2026, 04:00 UT - 11 July 2026, 03:59 UT is predicted at a normal level.

Based on ionospheric scintilation and TEC variation, the probability of error positioning on 11 July 2026, 04:00 UT – 12 July 2026, 03:59 UT is predicted at a normal level.

Based on ionospheric scintilation and TEC variation, the probability of error positioning on 12 July 2026, 04:00 UT - 13 July 2026, 03:59 UT is predicted at a normal level.

HF Radio Communication

MUF Depression was in strong condition and Short Wave Fadeout (SWF) was in quiet for the last 24 hours

The MUF depression on 10 July 2026, 04:00 UT - 11 July 2026, 03:59 UT is predicted at minor level due to previous of geomagnetic activity.

The MUF depression on 11 July 2026, 04:00 UT - 12 July 2026, 03:59 UT is predicted at minor level due to previous of geomagnetic activity.

The MUF depression on 12 July 2026, 04:00 UT - 13 July 2026, 03:59 UT is predicted at quiet level due to previous of geomagnetic activity.

The SWF on 10 July 2026, 04:00 UT – 11 July 2026, 03:59 UT is predicted at minor level due to the prediction of solar flare.

The SWF on 11 July 2026, 04:00 UT - 12 July 2026, 03:59 UT is predicted at quiet level due to the prediction of solar flare.

The SWF on 12 July 2026, 04:00 UT - 13 July 2026, 03:59 UT is predicted at quiet level due to the prediction of 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 11 July 2026 04.00UT - 12 July 2026 03.59UT.
Low level of electron flux is expected for 12 July 2026 04.00UT - 13 July 2026 03.59UT.

The 10 MeV proton flux remained quiet over the past 24 hours. 

Based on today's condition, 
the flux of high-energy proton for 10 july, 04:00 UT–11 july, 03:59 UT is predicted to be quiet,
the flux of high-energy proton for 11 july, 04:00 UT–12 july, 03:59 UT is predicted to be quiet,
the flux of high-energy proton for 12 july, 04:00 UT–13 july, 03:59 UT is predicted to be quiet.