Space Weather Report
Space Weather Report
***********************************************************************
Product: Daily Forecast of Geomagnetic Activity
Issued: 2025 November 27 08:58UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************
I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 26.11.2025 at 23:00 UTC was 120 sfu.
The background X-Ray flux is at the class B9.4 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 24-26.
An equatorial coronal hole (CH1332) was Earth facing on November 22-24.
A coronal hole (CH1333) at northern hemisphere will become Earth facing on November 30 - December 01.
II. Solar Energetic Particle Events
Protons fluxes are quiet.
The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels.
III. Interplanetary and Geomagnetic conditions
The solar wind speed measured by ACE satellite reached the max value 768 Km/s on November 26 at 22:20 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 26 at 13:20 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 unsettled to minor storm (G1) levels on November 27 due to the effect of a recurrent coronal hole high speed stream and at quiet to unsettled levels on November 28-29.
***************************************************************************
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
***************************************************************************
Product: Daily Forecast of Geomagnetic Activity
Issued: 2025 November 27 08:58UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************
I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 26.11.2025 at 23:00 UTC was 120 sfu.
The background X-Ray flux is at the class B9.4 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on November 24-26.
An equatorial coronal hole (CH1332) was Earth facing on November 22-24.
A coronal hole (CH1333) at northern hemisphere will become Earth facing on November 30 - December 01.
II. Solar Energetic Particle Events
Protons fluxes are quiet.
The greater than 2 MeV electron flux at geosynchronous orbit reached minor storm levels.
III. Interplanetary and Geomagnetic conditions
The solar wind speed measured by ACE satellite reached the max value 768 Km/s on November 26 at 22:20 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 26 at 13:20 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 unsettled to minor storm (G1) levels on November 27 due to the effect of a recurrent coronal hole high speed stream and at quiet to unsettled levels on November 28-29.
| Date | Ap index forecast | Geomagnetic Activity level |
|---|---|---|
| 27.11.2025 | 25 | Unsettled to Minor Storm (G1) |
| 28.11.2025 | 20 | Quiet to Unsettled |
| 29.11.2025 | 15 | Quiet to Unsettled |
***************************************************************************
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
***************************************************************************