Detailed Information

Solar Activity

Solar activity was eruptive in the last 24 hours.

There were 5 flares with all of them are C-class flares in the last 24 hours. The maximum flare class was C1.9 from NOAA4130 peaked at 18:34UT.
There were 4 solar radioburst all of which are type-III occurred in the last 24 hours.
There was 2 CME event in the last 24 hours. The east-directed CME has the highest median velocity of 252 km/s with an angular width of 20 degrees and the west-directed CME has the highest median velocity of 437 km/s with an angular width of 52 degrees.
The latest SDO/HMI Intensitygram data shows 11 active regions (NOAA4118,4120,4122,4123,4124,4125,4126,4127,4128,4129,4130) and the latest BBSO H-Alpha data shows 1 H-Alpha plages (NOAA4121).
Based on farside data shows no active region is going to appear from the east limb of the Solar disk in 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 active level for the last 24 hours.

The solar wind speed increase from 424 km/s and 697 km/s, north-south component of interplanetary magnetic field fluctuate between -4.9 nT and 3.6 nT. There was geoeffective coronal hole at south-east, while the others at north-east were not geoeffective. 

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

Ionospheric Activity

Ionosphere was in moderate conditions for the last 24 hours.

There was a depression of foF2 lower than 30% of its median value for 255 minutes. There was an increment of fmin more than 30% of its median values for 120 minutes. The Spread-F occurred for 180 minutes. The Sporadic-E occurred in the night and daytime, with the foEs value exceeded the foF2 for 645 minutes. The S4 index values (condition of ionospheric scintillation ) was in quiet condition with S4 index value was less than 0.5 over Pontianak.

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

 

Navigation

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

Based on ionospheric scintillation 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 moderate condition for the last 24 hours.

 

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

The SWF on the next 24 hours is predicted in 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 elektron flux is expected for the next 24 hours.

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