Space Weather Report
Space Weather Report
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Product: Daily Forecast of Geomagnetic Activity
Issued: 2025 November 17 06:06UTC
Prepared by the Athens Space Weather Forecasting Center
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I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 16.11.2025 at 23:00 UTC was 132 sfu.
The background X-Ray flux is at the class C1.2 level.
AR4274 erupted on November 16 at 08:17 UT peak time producing a M3.1-class solar flare and a radio blackout of category R1.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 15-16.
A coronal hole (CH1330) at northern hemisphere could become Earth facing on November 13-16.
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 712 Km/s on November 16 at 08:50 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 -5 nT on November 17 at 04:45 UT during the last 24 hours.
The geomagnetic field was at unsettled to active levels during the last 24 hours.
The Kp index now is at unsettled levels with Kp=3.
IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on November 17 due to the effect of the recurrent coronal hole high speed stream and at quiet to unsettled levels on November 18-19.
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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 17 06:06UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************
I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 16.11.2025 at 23:00 UTC was 132 sfu.
The background X-Ray flux is at the class C1.2 level.
AR4274 erupted on November 16 at 08:17 UT peak time producing a M3.1-class solar flare and a radio blackout of category R1.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 15-16.
A coronal hole (CH1330) at northern hemisphere could become Earth facing on November 13-16.
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 712 Km/s on November 16 at 08:50 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 -5 nT on November 17 at 04:45 UT during the last 24 hours.
The geomagnetic field was at unsettled to active levels during the last 24 hours.
The Kp index now is at unsettled levels with Kp=3.
IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on November 17 due to the effect of the recurrent coronal hole high speed stream and at quiet to unsettled levels on November 18-19.
| Date | Ap index forecast | Geomagnetic Activity level |
|---|---|---|
| 17.11.2025 | 15 | Quiet to Active |
| 18.11.2025 | 12 | Quiet to Unsettled |
| 19.11.2025 | 10 | 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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