Detailed Information

Solar Activity

SOLAR ACTIVITY SUMMARY

Solar activity was Eruptif in the last 24 hours.

There were 7 flares with all of them are C-class flares in the last 24 hours. The maximum flare class was C9.0 from NOAA3901 peaked at 17:28UT.

There were 5 solar radioburst all of which are type-III occurred in the last 24 hours.

There was 6 CME event in the last 24 hours. The east-directed CME has the highest median velocity of 351 km/s with an angular width of 40 degrees and the west-directed CME has the highest median velocity of 551 km/s with an angular width of 14 degrees.

The latest SDO/HMI Intensitygram data shows 8 active regions (NOAA3892,3893,3896,3897,3898,3899,3900,3901) and the latest BBSO H-Alpha data shows 2 H-Alpha plages (NOAA3894,3895).

STEREO/EUVI observation shows 3 Regions Due to Return 20 Nov to 22 Nov 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 active level for the last 24 hours.


The solar wind speed stable around 371 km/s, north-south component of interplanetary magnetic field fluctuate between -5.8 nT and 2.4 nT There was geoeffective coronal hole at central equator, while the others at eastern equator and north pole were not geoeffective. CME on 19 November 2024 17:24 UT was mainly errupted toward west with speed of 351 km/s and angular width of 44°. The CME was geoeffective and is likely to have not impact on next 24 hours.

 

Ionospheric Activity

Ionosphere was in Quiet condition for the last 24 hours.

There was no a depression of foF2 lower than 30% of its median value. There was no an increment of fmin more than 30% of its median values. There was no a Spread-F layer. The Sporadic-E occurred in the night and daytime with foEs value exceeding the foF2 value for 600 minutes. The S4 index values (condition of ionospheric scintillation) was less than 0.5 (quiet).

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

Navigation

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

Based on ionospheric scintillation and TEC variation, the probability of error positioning for 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 for the last 24 hours.

The MUF depression for next 24 hours is predicted on quiet level, based on LAPAN Time Series method.

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

Satellites

The electron flux was on low level for the last 24 hours.

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

 

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

Based on today's condition, the flux of high-energy protons for the next 24 hours

is predicted to be quiet.