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 C3.9 from NOAA 4304 peaked at 17:28UT. There were 1 solar radioburst all of which are type-III occurred in the last 24 hours. There was no CME event in the last 24 hours. The latest SDO/HMI Intensitygram data shows 5 active regions (NOAA4305,4307,4308,4309,4310) and the latest BBSO H-Alpha data shows 2 H-Alpha plages (NOAA4303,4306). Based on farside data shows 3 Regions Due to Return 16 Dec to 18 Dec 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 quiet level for the last 24 hours.

The solar wind speed increase from 413 km/s and 581 km/s, north-south component of interplanetary magnetic field fluctuate between -9.4 nT and 12.4 nT. There were geoeffective coronal holes at north pole and south pole, while the others at eastern equator, north-east and north-west 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 lack of data observation.

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 68.76, 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 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 on high level for the last 24 hours.

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

The high-energy proton flux has was quiet over the past 24 hours.

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