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Product: Daily Forecast of Geomagnetic Activity
Issued: 2026 January 26 08:08UTC
Prepared by the Athens Space Weather Forecasting Center
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I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 25.01.2026 at 23:00 UTC was 165 sfu.
The background X-Ray flux is at the class C1.0 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on January 22-24.
An equatorial coronal hole (CH1340) was Earth facing on January 15-22.
Another equatorial coronal hole (CH1341) rotated across the central meridian on January 24-25.

II. Solar Energetic Particle Events
Protons fluxes are quiet.
The greater than 2 MeV electron flux at geosynchronous orbit mainted at minor storm levels on January 25.

III. Interplanetary and Geomagnetic conditions
The solar wind speed measured by ACE satellite reached the max value 607 Km/s on January 25 at 10:05 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 January 25 at 12:25 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 quiet levels with Kp=1.

IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on January 26-27 and at quiet to active levels on January 28 due to the effects of the recurrent coronal hole high speed stream.

Date	Ap index forecast	Geomagnetic Activity level	
26.01.2026	10	Quiet to Unsettled	
27.01.2026	08	Quiet to Unsettled	
28.01.2026	15	Quiet to Active	

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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
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