SPACE WEATHER INFORMATION AND FORECAST SERVICES

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

Today

Geomagnet

Active

Ionosphere

Minor

Forecast

Geomagnet

Quiet

Ionosphere

Quiet

Issued : 2021 March 02 0800 UTC
Forecast Valid For 24 Hours

ESSENTIAL INFORMATION FOR SPACE WEATHER COMMUNITIES

HF Radio Communication

MUF Depression

Shortwave Fadeout / Radio Blackout

NAVIGATION

Error Positioning

SATELLITES

High Energy Proton

High Energy Electron

Detailed Information

Solar Activity

Solar activity was quiet for the last 24 hours.
No significant flare occurred in the last 24 hours. Type III solar radio burst occured nine times. CME hurled west with 38 degrees angular width and median velocity 483 km/s. The latest SDO/HMI Intensitygram data shows spotless Sun while the latest BBSO H-Alpha data shows one H-Alpha plage (NOAA 12804). STEREO EUVI/AIA 195 observation shows no new active regions is going to appear from the east limb of the Solar disk in the next 24 hours.

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

Geomagnetic Activity

The geomagnetic activity was in active level for the last 24 hours.

The solar wind speed decreased from 538 km/s to 359 km/s then increased to 438 km/s. The north-south component of the interplanetary magnetic field fluctuated from -7 to 7 nT. There was geoeffective coronal hole at central equator, while coronal hole at southwestern equator to south pole was not geoeffective.

Quiet level geomagnetic is expected for the next 24 hours.

Ionospheric Activity

The ionosphere was disturbed on minor level for the last 24 hours.

There was depression of foF2 lower than 30% of its median values for 120 minutes. There was no increment of fmin more than 30% of its median values. The Spread-F did not occur. The Sporadic-E occurred in the night and daytime for 900 minutes. The W-index mean value was -2. The S4 index values (condition of ionospheric scintillation) was less than 0,5 over Pontianak.

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

Navigation

Based on W-index, the error of the single-frequency GPS positioning for the last 24 hours was in slight level.

Based on the prediction of W-index = -2, the probability of error positioning for the next 24 hours is predicted in slight level.

HF Radio Communication

The MUF depression was in moderate level and Short Wave Fadeout (SWF) was in quiet level for the last 24 hours.

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

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

Satellites

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

High level electron flux is expected on the next 24 hours.

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

Based on solar activity prediction, the flux of high-energy proton for the next 24 hours is predicted to be quiet.