SPACE WEATHER INFORMATION AND FORECAST SERVICES

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

2019 Aug 22

Geomagnet

Quiet

Ionosphere

Minor

Forecast

Geomagnet

Quiet

Ionosphere

Issued : 2019 August 22 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. Neither flare, solar radio burst nor coronal mass ejection occurred in the last 24 hours. Based on the latest observation by SDO Intensitygram, the Sun is spotless. STEREO EUVI/AIA 195 observation shows no new active region to appear from the east limb of the solar disk in the next 24 hours.

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

Geomagnetic Activity

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

The solar wind speed decreased from 380 km/s to 350 km/s. North-south component of interplanetary magnetic field fluctuated from -1 to 1 nT. The geoeffective coronal hole was on central equator while the others at south pole,north pole, and western side were not geoeffective. There was no substorm in the last 24 hours.

Quiet level is expected in the next 24 hours.

Ionospheric Activity

Ionosphere was in minor conditions for the last 24 hours.

There was depression of foF2 lower than 30% of its median value for 45 minutes. There was no increment of fmin more than 30% of its median values. There was Spread-F event for 180 minutes. The Sporadic-E occurred in daytime and night time . The W-index mean value was 2.

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

Navigation

The Error positioning was slight 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 was in moderate condition and Short Wave Fadeout (SWF) was in quiet condition for the last 24 hours.

The probability of MUF depression for the next 24 hours is moderate based on LAPAN's foF2 time series model.

The probability of SWF for the next 24 hours is quiet due to the prediction of solar flare activities.

Satellites

The maximum value of electron flux in the last 24 hours less than 1000 particles/cm2.sec.s or in low level.

Low level electron flux is expected for the next 24 hours.
 

The flux of high-energy proton was in quiet level due to low solar activity.

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