***********************************************************************
Product: Daily Forecast of Geomagnetic Activity
Issued: 2026 February 21 07:20UTC
Prepared by the Athens Space Weather Forecasting Center
***********************************************************************

I. Solar activity
--Current Status
Solar Flux (10.7cm) measured on 20.02.2026 at 23:00 UTC was 111 sfu.
The background X-Ray flux is at the class B3.0 level.
No obviously Earth directed CMEs were observed in available LASCO imagery on February 17-19.
An equatorial coronal hole (CH1345) was Earth facing on February 12-18.
An equatorial coronal hole (CH1346) will rotate across the central meridian on February 20-22.

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 543 Km/s on February 21 at 04:45 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 -7 nT on February 20 at 23:25 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 unsettled levels with Kp=3.

IV. 3-day Geomagnetic Activity Forecast
The geomagnetic field is expected to be at quiet to unsettled levels on February 21, at quiet levels on February 22 and at quiet to active levels on February 23 due to effects associated with CH1346.

Date	Ap index forecast	Geomagnetic Activity level	
21.02.2026	10	Quiet to Unsettled	
22.02.2026	05	Quiet 	
23.02.2026	15	Quiet to Active	

***************************************************************************
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
***************************************************************************