Detailed Information

Solar Activity

Solar activity in the past 24 hours was eruptive.

Nine C-class flares occurred in the past 24 hours. The strongest was a C7.9 flare peaked at 13:17 UT from NOAA 14549. No solar radio bursts detected, but there were two west-directed CMEs recorded during this period. Among the west-directed CMEs, the event with the highest median velocity recorded 281 km/s with an angular width of 84°. There was no east-directed CME recorded. The latest SDO/HMI intensitygram data show five active regions (NOAA 14545, 14547, 14548, 14549, and 14550), while the latest BBSO H-alpha data show no H-alpha plages on the solar disk. Five active regions are due to return from the farside between 8 and 10 October.

Based on today's conditions, solar activity for the next 24 hours is predicted to be active.

Geomagnetic Activity

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

The solar wind speed decreased from 535 km/s to 380 km/s, while the north-south component of the interplanetary magnetic field fluctuated between -3.9 nT and 2.1 nT. There was one geoeffective coronal hole at the southeast, while the other at the northeast was not geoeffective. CME on 7 October at 14:24 was mainly erupted toward the west with the speed of281 km/s and angular width of 84°. The CME was geoeffective and is likely have no impact in the next 24 hours.

A quiet level of geomagnetic activity is expected for the next 24 hours.

Ionospheric Activity

Ionosphere was in Quiet conditions for the last 24 hours.

There was no depression of foF2 lower than 30% of its median value for last 24 hours. There was no increment of fmin more than 30% of its median value for the last 24 hours. There was The Spread-F occurred For 300 minutes for the last 24 hours. The Sporadic E layer occured in the night and daytime for 675 minutes with foEs value exceeded the foF2 for 75 minutes. The S4 index values less than 0.5 level last 24 hours over Agam. The TEC values was on Quiet (VTEC < 125) level last 24 hours over Agam.

 

The ionosphere activity for next 24 hours is predicted to be Quiet.

Navigation

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

Based on ionospheric scintilation 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 Quiet condition and Short Wave Fadeout (SWF) was in Quiet level

The MUF depression for next 24 hours is predicted on Quiet level, due to previous of geomagnetic activity

The SWF on for next 24 hours is predicted in Quiet level due to the prediction of solar flare.

Satellites

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

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

The flux of high-energy protons in the past 24 hours was quiet.

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