SPACE WEATHER INFORMATION AND FORECAST SERVICES

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

2017 Nov 17

Geomagnet

Quiet

Ionosphere

Moderate

Forecast

Geomagnet

Quiet

Ionosphere

Quiet

Issued : 2017 November 19 0800 UTC
Forecast Valid For 24 Hours

Detailed Information

Solar Activity

Today, solar activity is very quiet. There was no flare occurred and the solar disk only has one small active region with modest complexity. There was no CME occurred during the last 24 hours as seen by SOHO/LASCO C2.

  • The solar activity on November 17th 2017, starting from 08:00 UT is predicted to remain quiet, valid for 24 hours.
  • The solar activity on November 18th 2017, starting from 08:00 UT is predicted to remain quiet, valid for 24 hours.
  • The solar activity on November 19th 2017, starting from 08:00 UT is predicted to remain quiet, valid for 24 hours.

Geomagnetic Activity

Geomagnetic activity was on quiet level.    

Today's geomagnetic activity was on quiet level. Solar wind speed was around 450 km/s to 525 km/s. IMF was varied between -5 to 5 nT. Today's geoeffective coronal hole were on equator and near equator while at north pole and south pole were not. The latest substorm has occured on November 16th, 2017 around 07:00 UT with intensity less than 1000 nT lasts for 5 hours. 

  • Quiet level is expected on November 17th, 08:00 UT - November 18th, 07:59 UT.     
  • Quiet level is expected on November 18th, 08:00 UT - November 19th, 07:59 UT.       
  • Quiet level is expected on November 19th, 08:00 UT - November 20th, 07:59 UT.

Ionosphere Activity

Ionosphere was in moderate conditions for the last 24 hours.

There was depression of foF2 lower than 30% from its median values for more than 2 hours. There was no increment of fmin more than 30% from its median values. There was Spread-F event . The Sporadic-E occurred in day and night time with foEs values were more than foF2. The W-index mean value was 1. Ionospheric scintillations for the last 24 hours was minor over Bandung with S4 index value more than 0.25 but less than 0.5.

  • The ionosphere activity for November 17th, 08:00 UT - November 18th, 07:59 UT is predicted to be quiet.
  • The ionosphere activity for November 18th, 08:00 UT - November 19th, 07:59 UT is predicted to be quiet.
  • The ionosphere activity for November 19th, 08:00 UT - November 20th, 07:59 UT is predicted to be quiet.

Navigation

The Error positioning was normal with W-index value was -1 for the last 24 hours.

  • The probability of error positioning for November 17th, 08:00 UT - November 18th, 07:59 UT is slight during daytime and nighttime based on W-index prediction value is going to be -2.
  • The probability of error positioning for November 18th, 08:00 UT - November 19th, 07:59 UT is slight during daytime and nighttime based on W-index prediction value is going to be -2.
  • The probability of error positioning for November 19th, 08:00 UT - November 20th, 07:59 UT is normal during daytime and nighttime based on W-index prediction value is going to be -1.

HF Radio Communication

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

  • The probability of MUF depression for November 17th, 08:00 UT - November 18th, 07:59 UTUT is quiet due to previous and prediction of geomagnetic activity.
  • The probability of SWF November 17th, 08:00 UT - November 18th, 07:59 UT is quiet due to the prediction of solar flare activities.
  • The probability of MUF depression for November 18th, 08:00 UT - November 19th, 07:59 UT is quiet due to previous and prediction of geomagnetic activity.
  • The probability of SWF November 18th, 08:00 UT - November 19th, 07:59 UT is quiet due to the prediction of solar flare activities.
  • The probability of MUF depression for November 19th, 08:00 UT - November 20th, 07:59 UT is quiet due to previous and prediction of geomagnetic activity.
  • The probability of SWF November 19th, 08:00 UT - November 20th, 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 17 November 2017 starting from 08:00 UT is predicted to remain quiet, valid for 24 hours.
  • The flux of high-energy proton on 18 November 2017 starting from 08:00 UT is predicted to remain quiet, valid for 24 hours.
  • The flux of high-energy proton on 19 November 2017 starting from 08:00 UT is predicted to remain quiet, valid for 24 hours.