Detailed Information

Solar Activity

Solar activity for July 3rd, 2026 04:00 UT - July 4th, 2026 03:59 UT was active. 
Solar activity for July 4th, 2026 04:00 UT - July 5th, 2026 03:59 UT was major flare.
Solar activity for July 5th, 2026 04:00 UT - July 6th, 2026 03:59 UT was active.

Solar activity has been active over the past 24 hours. A total of 24 flares were observed, consisting of 15 C-class flares and 9 M-class flares. The most significant event was an M5.3 flare originating from NOAA 14479, which peaked at 17:57 UT. Associated with this activity, five Type III solar radio bursts were detected, and four Coronal Mass Ejections (CMEs) were observed, with a west limb CME recorded at 592 kilometers per second with an angular width of 26 degrees, and an east limb CME at 409 kilometers per second with an angular width of 18 degrees. Eight active regions were identified by SDO/HMI on the visible disk; NOAA 14478, NOAA 14479, NOAA 14480, NOAA 14481, NOAA 14482, NOAA 14483, NOAA 14484, and NOAA 14485. No H-alpha plages were observed by BBSO. One farside region is due to return from east limb hemisphere between 06 July and 08 July. 

Solar activity is predicted to be in active level for the next 24 hours.

Geomagnetic Activity

The geomagnetic activity was at major storm level on 03 July 2026 07UT - 04 July 2026 07UT.
The geomagnetic activity was at major storm level on 04 July 2026 07UT - 05 July 2026 07UT.
The geomagnetic activity was on minor storm level for the last 24 hours.

The solar wind speed increased from 429 km/s to 562 km/s, and the north-south component of the interplanetary magnetic field fluctuated between -4.78 nT and 4,01 nT. Coronal holes at eastern equator and south-west were not geoeffective. CME on 05 July 2026 16:48 UT was mainly errupted toward north-west with speed of 411 km/s and angular width of 82°. The CME was geoeffective and is likely to have not impact on next 24 hours.

Minor storm level geomagnetic activity is expected for the next 24 hours.

Ionospheric Activity

Ionosphere was in minor conditions for July 03rd, 04:00 UT - July 04th, 03:59 UT.

Ionosphere was in minor conditions for July 04th, 04:00 UT - July 05th, 03:59 UT.

Ionosphere was in quiet conditions for July 05th, 04:00 UT - July 06th, 03:59 UT.

There was depression of foF2 lower than 30% of its median value for 105, 75 and 0 minutes in the last 72 hours. There was increment of fmin more than 30% of its median values for 210, 120 and 210 minutes respectively for the last 72 hours. The Spread-F occurred for 0, 330 and 150 minutes respectively for the last 72 hours. The Sporadic-E occurred in the night and daytime with foEs value exceeded the foF2 for several times for 1170, 1350 and 975 minutes respectively for the last 72 hours. The S4 index values was quiet level (S4<0.4) and the maximum TEC index value was at 64.2, 62.26 and 67.23 respectively, over Pontianak for the last 72 hours.

The ionosphere activity on the next 24 hours is predicted to be Minor.

Navigation

Based on TEC and scintilation , the error of the single frequency GPS positioning for July 03rd, 04:00 UT - July 04th, 03:59 UT. was in normal level.

Based on TEC and scintilation , the error of the single frequency GPS positioning for July 04th, 05:00 UT - July 06th, 03:59 UT. was in normal level.

Based on TEC and scintilation , the error of the single frequency GPS positioning for July 05th, 04:00 UT - July 06th, 03:59 UT. was in normal level.

Based on ionospheric scintilation and TEC variation, the probability of error positioning in the next 24 hours is predicted at a normal level.

HF Radio Communication

MUF depression was in moderate condition and Short Wave Fadeout (SWF) was in strong on July 03rd, 04:00 UT - July 04th, 03:59 UT.

MUF depression was in moderate condition and Short Wave Fadeout (SWF) was in moderate on July 04th, 04:00 UT - July 05th, 03:59 UT.

MUF depression was in quiet condition and Short Wave Fadeout (SWF) was in strong on July 05th, 04:00 UT - July 06th, 03:59 UT.

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

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

Satellites

The electron flux was at low level on 03 July 2026 07UT - 04 July 2026 07UT.
The electron flux was at low level on 04 July 2026 07UT - 05 July 2026 07UT.
The electron flux was on low level for the last 24 hours.

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

The 10 MeV proton flux for July 3rd, 2026 04:00 UT - July 4th, 2026 03:59 UT was at an event in progress condition.
The 10 MeV proton flux for July 4th, 2026 04:00 UT - July 5th, 2026 03:59 UT was at an event in progress condition.
The 10 MeV proton flux fo July 5th, 2026 04:00 UT - July 6th, 2026 03:59 UT was quiet.

Based on the observed conditions, the flux of high energy proton is predicted to remain quiet for the next 24 hours.