Detailed Information

Solar Activity

Solar activity was active in the last 24 hours.

There were 9 flares consisting of 8 C-class flares and 1 M-class flares with the maximum flare class was M1.4 from NOAA 4366 peaked at 13:12 UT. There were 1 type-III solar radioburst and 4 CME events in the last 24 hours. The east-directed CME has the highest median velocity of 710 km/s with an angular width of 6 degrees and the west-directed CME has the highest median velocity of 604 km/s with an angular width of 8 degrees. The latest SDO/HMI Intensitygram data shows 7 active regions (NOAA 4367, 4368, 4369, 4371, 4373, 4374, and 4375) and the latest BBSO H-Alpha data shows 1 plage (NOAA 4370). Based on farside data, no new regions is due to return from the east limb of the Solar disk within the next 24 hours.

Based on today's condition, solar activity for the next 24 hours is predicted to be eruptive.

 

Geomagnetic Activity

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

The solar wind speed was stable around 449 km/s, north-south component of interplanetary magnetic field fluctuated between -7.3 nT and 7.9 nT. There was geoeffective coronal hole at central equator, while the others at eastern equator, north-west and south pole were not geoeffective. CME on 11 February 2026 17:24 UT was mainly erupted toward north-west with speed of 651 km/s and angular width of 8°. The CME is geoeffective and lesslikely to have an impact on next 24 hours.

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

 

 

Ionospheric Activity

The ionospheric activity for the last 24 hours cannot be evaluated due to problems with the CADI station. The S4 index values (condition of ionospheric scintillation) were less than 0.5 so the scintillation was on quiet level, and the maximum TEC index value were at 80.11 in the last 24 hours, both measurement over Pontianak.

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

Navigation

The error of the single frequency GPS positioning for the next 24 hours was on normal level, based on ionospheric scintillation and TEC variation. 

Based on ionospheric scintillation and TEC variation, the probability of error positioning for the next 24 hours is predicted to be on normal level.

HF Radio Communication

MUF depression and Short Wave Fadeout (SWF) cannot be evaluated for the last 24 hours. 

The MUF depression for the next 24 hours is predicted at a quite level, due to previous geomagnetic activity.

The SWF for the next 24 hours is predicted at a quite 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.

The flux of high-energy protons in the past 24 hours was quiet.
Based on today's conditions, the flux of high-energy protons for the next 24 hours is predicted to be quiet.