Detailed Information

Solar Activity

Solar activity was eruptive in the last 24 hours.

There were 4 flares with all of them are C-class flares in the last 24 hours. The maximum flare class was C2.1 from NOAA4292 peaked at 15:56UT. There was no solar radioburst occured in the last 24 hours. There was 9 CME event in the last 24 hours. The east-directed CME has the highest median velocity of 1644 km/s with an angular width of 10 degrees and the west-directed CME has the highest median velocity of 1736 km/s with an angular width of 22 degrees. The latest SDO/HMI Intensitygram data shows 7 active regions (NOAA4287,4288,4289,4290,4291,4292,4293) and the latest BBSO H-Alpha data shows 1 H-Alpha plages (NOAA4286). Based on farside data shows 4 Regions Due to Return 26 Nov to 28 Nov from the east limb of the Solar disk.

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

Geomagnetic Activity

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

The solar wind speed stable around 600 km/s, north-south component of interplanetary magnetic field fluctuate between -11.3 nT and 10.6 nT There was geoeffective coronal hole at central equator, while the others at south-east and north-east were not geoeffective. CME on 25 November 2025 21:36 UT was mainly errupted toward north-west with speed of 1736 km/s and angular width of 16°. The CME was geoeffective and is likely to have impact on next 24 hours.

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

Ionospheric Activity

Ionosphere cannot be evaluated the last 24 hours

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 82.64 in the last 24 hours, both measurement over Pontianak.

The ionosphere activity is predicted to be quiet 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 scintilation and TEC variation.

Based on ionospheric scintilation 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 quiet level, due to previous geomagnetic activity.

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

Satellites

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 the last 24 hours.

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