Space Weather Report
Space Weather Report
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Product: Daily Forecast of Geomagnetic Activity
Issued: 2025 November 10 05:26UTC
Prepared by the Athens Space Weather Forecasting Center
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I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 09.11.2025 at 23:00 UTC was 176 sfu.
The background X-Ray flux is at the class C1.8 level.
A X1.7-class solar flare erupted on November 09 at 07:30 UT peak time producing a radio blackout of category R3.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 06 and 08.
An equatorial coronal hole (CH1328) rotated across the central meridian on November 03-06.
A small coronal hole (CH1329) at southern hemisphere could rotate across the central meridian on November 10.
---CME arrival forecast
A CME was observed on November 07 at 07:23 UT.The source is an M1.7-class flare from AR4274 starting around on November 07 at 07:00 UT. This CME is expected to reach Earth on November 10 between at 05:49 UT and at 08:17 UT according to EAM predictions.
Another CME was observed on November 09 at 07:24 UT. The source of this event is the X1.7 flare.This CME is expected to reach Earth between on November 11 at 23:47 UT and on November 12 at 03:20 UT according to EAM predictions.
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 584 Km/s on November 10 at 03:40 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 09 at 21:30 UT during the last 24 hours.
The geomagnetic field was at quiet to unsettled 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 minor storm (G1) levels on November 10 due to the effects of the recurrent coronal hole high speed stream and CME observed on November 07 and at unsettled to moderate storm (G2) levels on November 11-12 due to the effects of the CME observed on November 09.
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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 10 05:26UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************
I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 09.11.2025 at 23:00 UTC was 176 sfu.
The background X-Ray flux is at the class C1.8 level.
A X1.7-class solar flare erupted on November 09 at 07:30 UT peak time producing a radio blackout of category R3.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 06 and 08.
An equatorial coronal hole (CH1328) rotated across the central meridian on November 03-06.
A small coronal hole (CH1329) at southern hemisphere could rotate across the central meridian on November 10.
---CME arrival forecast
A CME was observed on November 07 at 07:23 UT.The source is an M1.7-class flare from AR4274 starting around on November 07 at 07:00 UT. This CME is expected to reach Earth on November 10 between at 05:49 UT and at 08:17 UT according to EAM predictions.
Another CME was observed on November 09 at 07:24 UT. The source of this event is the X1.7 flare.This CME is expected to reach Earth between on November 11 at 23:47 UT and on November 12 at 03:20 UT according to EAM predictions.
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 584 Km/s on November 10 at 03:40 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 09 at 21:30 UT during the last 24 hours.
The geomagnetic field was at quiet to unsettled 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 minor storm (G1) levels on November 10 due to the effects of the recurrent coronal hole high speed stream and CME observed on November 07 and at unsettled to moderate storm (G2) levels on November 11-12 due to the effects of the CME observed on November 09.
| Date | Ap index forecast | Geomagnetic Activity level |
|---|---|---|
| 10.11.2025 | 20 | Quiet to Minor Storm (G1) |
| 11.11.2025 | 35 | Unsettled to Moderate Storm (G2) |
| 12.11.2025 | 25 | Unsettled to Moderate Storm (G2) |
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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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