Space Weather Report
Space Weather Report
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Product: Daily Forecast of Geomagnetic Activity
Issued: 2025 November 20 05:08UTC
Prepared by the Athens Space Weather Forecasting Center
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I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 19.11.2025 at 23:00 UTC was 123 sfu.
The background X-Ray flux is at the class B9.5 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 16-18.
A coronal hole (CH1331) at northern hemisphere will rotate across the central meridian on November 18.
II. Solar Energetic Particle Events
Protons and electrons fluxes are quiet.
III. Interplanetary and Geomagnetic conditions
The solar wind speed measured by ACE satellite reached the max value 416 Km/s on November 19 at 12:45 UT during the last 24 hours.
The solar wind speed from STEREO A was detected 400 Km/s during the last 24 hours.
The vertical component of IMF Bz reached the max value -4 nT on November 20 at 01:10 UT during the last 24 hours.
The geomagnetic field was at quiet levels during the last 24 hours.
The Kp index now is at quiet levels with Kp=1.
IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet levels on November 20 and at quiet to unsettled levels on November 21-22.
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Athens Space Weather Forecasting Center
Physics Department, National & Kapodistrian University of Athens
Athens Neutron Monitor Station A.NE.MO.S
Tel.: +30 210 727 6901
email: spaceweather@phys.uoa.gr
URL: http://spaceweather.phys.uoa.gr
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Product: Daily Forecast of Geomagnetic Activity
Issued: 2025 November 20 05:08UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************
I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 19.11.2025 at 23:00 UTC was 123 sfu.
The background X-Ray flux is at the class B9.5 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 16-18.
A coronal hole (CH1331) at northern hemisphere will rotate across the central meridian on November 18.
II. Solar Energetic Particle Events
Protons and electrons fluxes are quiet.
III. Interplanetary and Geomagnetic conditions
The solar wind speed measured by ACE satellite reached the max value 416 Km/s on November 19 at 12:45 UT during the last 24 hours.
The solar wind speed from STEREO A was detected 400 Km/s during the last 24 hours.
The vertical component of IMF Bz reached the max value -4 nT on November 20 at 01:10 UT during the last 24 hours.
The geomagnetic field was at quiet levels during the last 24 hours.
The Kp index now is at quiet levels with Kp=1.
IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet levels on November 20 and at quiet to unsettled levels on November 21-22.
| Date | Ap index forecast | Geomagnetic Activity level |
|---|---|---|
| 20.11.2025 | 05 | Quiet |
| 21.11.2025 | 10 | Quiet to Unsettled |
| 22.11.2025 | 06 | Quiet to Unsettled |
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Athens Space Weather Forecasting Center
Physics Department, National & Kapodistrian University of Athens
Athens Neutron Monitor Station A.NE.MO.S
Tel.: +30 210 727 6901
email: spaceweather@phys.uoa.gr
URL: http://spaceweather.phys.uoa.gr
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