Detailed Information

Solar Activity

Solar activity over the past 24 hours was eruptive. Five C-class solar flares were observed, with no M-class or X-class flares. The most energetic event was a C8.7 flare from NOAA 14414, peaking at 15:43UT. Associated with this flare activity, two Type III solar radio bursts were detected, while no Type II or Type IV radio bursts were reported. No coronal mass ejections were observed during this period.

On the visible disk, SDO/HMI identified seven active regions: NOAA 14405, NOAA 14406, NOAA 14408, NOAA 14409, NOAA 14413, NOAA 14414, and NOAA 14415. Additionally, two H-alpha plages were noted by BBSO, corresponding to NOAA 14411 and NOAA 14412. Looking ahead, one active region is due to return from the farside between April 09 and April 11. For the next 24 hours, solar activity is predicted to be active, 

Geomagnetic Activity

The geomagnetic activity was on active level for the last 24 hours.
The solar wind speed decrease from 511 km/s to 374 km/s, north-south component of interplanetary magnetic field fluctuate between -5.3 nT and 4.2 nT There were geoeffective coronal holes at eastern equator and central equator, while the others at eastern equator, south-east, south-west and north-east were not geoeffective.
Quiet level geomagnetic activity is expected for the next 24 hours.

 

 

 

 

Ionospheric Activity

Ionosfer was in minor conditions on 24 hours.
There was depression in the foF2 of its median value for 120 minutes in the last 24 hours. There was an increment in fmin exceeding 30% of its median value for 60 minutes in the last 24 hours. There was a Spread-F Event for 195 minutes in the last 24 hours. Sporadic E-layer during the day and night for 840 minutes with foEs values ​​higher than foF2 values ​​in the last 24 hours. The ionospheric scintillation index (S4) above Pontianak, had a value higher than 0.8 at a severe level and the maximum TEC value was 85.76 both observed above Pontianak.
The ionosphere activity is predicted to be minor for the next 24 hours.

Navigation

The error of the single frequency GPS positioning for the next 24 hours was on medium level, based on ionospheric scintillation and TEC variation.
Based on ionospheric scintillation and TEC variation, the probability of error positioning for the next 24 hours is predicted to be on medium level.

HF Radio Communication

In the last 24 hours, the Maximum Usable Frequency (MUF) Depression was at a moderate level, and the Short-Wave Fadeout (SWF) was at a moderate level.
The MUF depression for the next 24 hours is predicted at a minor level, due to previous geomagnetic activity.
The SWF for the next 24 hours is predicted at a minor 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 10 MeV proton flux remained quiet over the past 24 hours.

Based on these conditions, the proton flux is predicted to remain quiet for the next 24 hours.