SPACE WEATHER INFORMATION AND FORECAST SERVICES

Space Science Center
National Institute of Aeronautics and Space
LAPAN - Indonesia

Today

Geomagnet

Quiet

Ionosphere

Minor

Forecast

Geomagnet

Quiet

Ionosphere

Quiet

Issued : 2018 September 20 0800 UTC
Forecast Valid For 24 Hours

ESSENTIAL INFORMATION FOR SPACE WEATHER COMMUNITIES

HF Radio Communication

MUF Depression

Shortwave Fadeout / Radio Blackout

Aviation

NAVIGATION

Error Positioning

SATELLITES

High Energy Proton

High Energy Electron

Detailed Information

Solar Activity

Solar activity was quiet without flare, CME nor solar radio burst detected. Today's observation shows the spotless Sun. According to STEREO EUVI/AIA195 observation, no new active region is predicted to appear from the east limb in the next 24 hours.

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

Geomagnetic Activity

The geomagnetic activitiy was on quiet level in the last 24 hours.

Today's geomagnetic activity was on quiet level. The solar wind speed was decreased from 475 to 375 km/s, proton densitiy tend to decreased from  8 to 1 part/cm³ and Bz component was varying around -5 to +5 nT. There is no geoeffective coronal holes for today. In the last 24 hours there was no substorm occurence

Quiet level is expected for next 24 hours.

Ionosphere Activity

Ionosphere was in minor conditions for the last 24 hours. 

There was depression of foF2 lower than 30% of its median value. There was increment of fmin more than 30% of its median values. There was spread-F event for 30 minutes. The Sporadic-E occurred in day and night time. The W-index mean value was 3. The S4 index values (condition of ionospheric scintillation ) was less than 0.25 over Bandung.

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

Navigation

The error positioning was medium for the last 24 hours based on W index value.

The probability of error positioning for the next 24 hours is slight during daytime and nighttime based on the W-index value that going to be 2.

HF Radio Communication

MUF depression were in moderate condition and Short Wave Fadeout (SWF) were in quiet condition for the last 24 hours.

  • The probability of MUF depression for the next 24 hours is quiet based on LAPAN time series model.
  • The probability of SWF for the next 24 hours is quiet due to the prediction of solar flare activities.

Satellites

The electron flux in the last 24 hours was around 1000 particles/cm2.sec.sr or in the  high level. High electron flux is expected for the next 24 hours.

The flux of high-energy proton was quiet due to the extremely low solar activity. Based on today's solar prediction, the flux of high-energy proton is predicted to be quiet for the next 24 hours.