SPACE WEATHER INFORMATION AND FORECAST SERVICES

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

2017 Dec 15

Geomagnet

Quiet

Ionosphere

Quiet

Forecast

Geomagnet

Quiet

Ionosphere

Quiet

Issued : 2017 December 16 0800 UTC
Forecast Valid For 24 Hours

Detailed Information

Solar Activity

Solar activity is currently on the quiet level. No flare nor solar radio-burst is detected in the last 24 hours. Today's observation reveals spotless sun which expected to stay still for the next 3 days.
Based on today's condition,

  • the solar activity on December 15, 2017, starting from 08:00 UT is predicted remain at the quiet level, valid for the next 24 hours.
  • the solar activity on December 16, 2017, starting from 08:00 UT is predicted remain at the quiet level, valid for the next 24 hours.
  • the solar activity on December 17, 2017, starting from 08:00 UT is predicted remain at the quiet level, valid for the next 24 hours.

Geomagnetic Activity

Geomagnetic activity was in quiet level                                                        
                                                      
Today's geomagnetic activity was on quiet level. Solar wind speed decreeased 450 km/s to 350 km/s. IMF was varied between -3 to 3 nT. The geoeffective coronal holes were on north pole, equator, and southwestern equator, while the another one on south pole were not. There was no substorm in the last 24 hours.

  • Quiet level is expected on December 15th, 08:00 UT - December 16th, 07:59 UT.
  • Quiet level is expected on December 16th, 08:00 UT - December 17th, 07:59 UT.
  • Quiet level is expected on December 17th, 08:00 UT - December 18th, 07:59 UT.

Ionosphere Activity

Ionosphere was in quiet conditions for the last 24 hours.

There was no depression of foF2 lower than 30% from its median values. Also, there was no increment of fmin more than 30% of its median values. Also, there was no Spread-F event. The Sporadic-E occurred in daytime and nighttime with foEs values was less than foF2 but exceeded the foF2 value in 11:00 - 14:00 LT. Ionospheric scintillations for the last 24 hours over Bandung and Biak were quiet with S4 index value less than 0.25.

  • The ionosphere activity for December 15th, 08:00 UT - December 16th, 07:59 UT is predicted to be quiet.
  • The ionosphere activity for December 16th, 08:00 UT - December 17th, 07:59 UT is predicted to be quiet.
  • The ionosphere activity for December 17th, 08:00 UT - December 18th, 07:59 UT is predicted to be quiet.

Navigation

The Error positioning was normal for the last 24 hours due to the GPS single frequency observation.

  • The probability of error positioning for December 15th, 08:00 UT - December 16th, 07:59 UT is normal during daytime and nighttime based on solar geomagnetic activity.
  • The probability of error positioning for December 16th, 08:00 UT - December 17th, 07:59 UT is normal during daytime and nighttime based on solar geomagnetic activity.
  • The probability of error positioning for December 17th 08:00 UT - December 18th, 07:59 UT is normal during daytime and nighttime based on solar geomagnetic activity.

HF Radio Communication

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

  • The probability of MUF depression for December 15th, 08:00 UT - December 16th, 07:59 UT is quiet due to previous and prediction of geomagnetic activity.
  • The probability of SWF December 15th, 08:00 UT - December 16th, 07:59 UT is quiet due to the prediction of solar flare activities.

 

  • The probability of MUF depression for December 16th, 08:00 UT - December 17th, 07:59 UT is quiet due to previous and prediction of geomagnetic activity.
  • The probability of SWF December 16th, 08:00 UT - December 17th, 07:59 UT is quiet due to the prediction of solar flare activities.

 

  • The probability of MUF depression for December 17th, 08:00 UT - December 18th, 07:59 UT is quiet due to previous and prediction of geomagnetic activity.
  • The probability of SWF December 17th, 08:00 UT - December 18th, 07:59 UT is quiet due to the prediction of solar flare activities.

Satellites

Within the last 24 hours, the flux of high-energy proton is in quiet level due to low solar activity.

  • The flux of high-energy proton on 15 December, 2017, starting from 08:00 UT is predicted to remain on quiet level, valid for the next 24 hours.
  • The flux of high-energy proton on 16 December, 2017, starting from 08:00 UT is predicted to remain on quiet level, valid for the next 24 hours.
  • The flux of high-energy proton on 17 December, 2017, starting from 08:00 UT is predicted to remain on quiet level, valid for the next 24 hours.