Detailed Information

Solar Activity

Solar activity was eruptive in the last 24 hours.

There was one C-class flare detected, which was an C1.5 flare from NOAA 14475, peaking at 04:56UT. Three solar radio bursts were detected, specifically a Type III burst and three coronal mass ejections were reported, with those propagating to the east having a median speed of 563 km/s and an angular width of 48 degrees. On the visible disk, SDO/HMI observations identified five active regions: NOAA 14470, NOAA 14472, NOAA 14473, NOAA 14474 and NOAA 14475. BBSO H-Alpha data indicated three plages, corresponding to NOAA 14468, NOAA 14469, and NOAA 14471. Furthermore, no active region is expected to appear from the farside for the next 24 hours.

Solar activity is predicted to remain eruptive for the next 24 hours.

Geomagnetic Activity

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

The solar wind speed decrease from 409 km/s to 328 km/s, north-south component of interplanetary magnetic field fluctuate between -3.9 nT and 5.7 nT There were geoeffective coronal holes at eastern equator and central equator, while the others at eastern equator, north-east and north pole were not geoeffective. 

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

Ionospheric Activity

Ionospheric Activity Ionosphere activity for the last 24 hours cannot be evaluated.

The ionospheric activity regarding the foF2, fmin, Spread-F, and E-sporadis values for the last 24 hours cannot be evaluated due to problems with the CADI station. The S4 index values (condition of ionospheric scintillation) was less than 0.5 and the maximum TEC index value was at 61.1, both over Pontianak.

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

Navigation

Navigation the error of the single frequency GPS positioning for the last 24 hours was in 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 at a normal level.

HF Radio Communication

HF Radio Communication MUF (Maximum Usable Frequency) depression and Short Wave Fadeout (SWF) for the last 24 hours cannot be evaluated due to problems with the Pontianak station.

The MUF depression for the next 24 hours is predicted on quiet level, due to previous geomagnetic activity.

The SWF for the next 24 hours is predicted in minor level due to the prediction of 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 proton flux was on quiet level for the last 24 hours.

The 10 MeV proton flux is predicted to remain quiet for the next 24 hours.