Detailed Information

Solar Activity

Solar activity was eruptive in the last 24 hours.

There were 13 flares, all of which were C-class flares, in the last 24 hours. The maximum flare class was C7.4 from NOAA 4334 peaked at 06:12 UT. There was 1 solar radioburst, all of which are type-III occurred in the last 24 hours. There were 3 CME events in the last 24 hours. The east-directed CME has the highest median velocity of 1358 km/s with an angular width of 12 degrees, and no west-directed CMEs are observed. The latest SDO/HMI Intensitygram data show 7 active regions (NOAA 4323, 4324, 4325, 4333, 4334, 4336, and 4337), and the latest BBSO H-Alpha data show 5 H-Alpha plages (NOAA 4329, 4330, 4331, 4332, and 4335). Based on Farside data shows 1 region due to Return from 08 Jan to 10 Jan 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 remained at a quiet level over the last 24 hours.

The solar wind speed increases from 322 km/s and 415 km/s, north-south component of the interplanetary magnetic field decreases from 6.8 nT to -4.2 nT. There was a geoeffective coronal hole at the eastern equator, while the others at the eastern equator and the south pole were not geoeffective.

Active 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 the unavailability of data observations.

In the last 24 hours, the S4 index values (condition of ionospheric scintillation) were lower than 0.5, and the maximum TEC index value was at 72.60, both over Pontianak.

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

Navigation

Based on TEC variation and scintillation, the error of the single-frequency GPS positioning for the last 24 hours was at a normal level.

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

HF Radio Communication

The MUF depression and Short Wave Fadeout (SWF) for the last 24 hours cannot be evaluated due to unavailable data observation.

The MUF depression over the next 24 hours is predicted at a quiet level due to the previous of geomagnetic activity.

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

Satellites

The electron flux was at a high level for the last 24 hours.

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

The flux of high-energy proton events was quiet in the last 24 hours.

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