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Product: Daily Forecast of Geomagnetic Activity
Issued: 2026 January 24 07:47UTC
Prepared by the Athens Space Weather Forecasting Center
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I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 23.01.2026 at 23:00 UTC was 180 sfu.
The background X-Ray flux is at the class C1.9 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) will rotate across the central meridian on January 24-25.

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 602 Km/s on January 23 at 15:25 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 23 at 16:30 UT during the last 24 hours.
The geomagnetic field was at quiet to active levels during the last 24 hours.
The Kp index now is at quiet levels with Kp=2.

IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet to active levels on January 24 due to the effects of the recurrent coronal hole high speed stream, at quiet to unsettled levels on January 25 and at quiet levels on January 26.

DateAp index forecastGeomagnetic Activity level
24.01.202615Quiet to Active
25.01.202608Quiet to Unsettled
26.01.202605Quiet

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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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