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Product: Daily Forecast of Geomagnetic Activity
Issued: 2026 January 22 08:32UTC
Prepared by the Athens Space Weather Forecasting Center
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I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 21.01.2026 at 23:00 UTC was 188 sfu.
The background X-Ray flux is at the class C1.4 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on January 19-21.
An equatorial coronal hole (CH1340) will become Earth facing on January 15-21.
Two M-class flares were produced on January 21.

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 708 Km/s on January 21 at 10:40 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 -6 nT on January 21 at 08:30 UT during the last 24 hours.
The geomagnetic field was at unsettled to strong storm (G3) 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 January 22-23 due to the effects of the recurrent coronal hole high speed stream and at quiet to unsettled levels on January 24.

Date	Ap index forecast	Geomagnetic Activity level	
22.01.2026	15	 Quiet to Active	
23.01.2026	10	Quiet to Active	
24.01.2026	08	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
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