:Issued: 2026 Feb 22 1244 UTC
:Product: documentation at http://www.sidc.be/products/meu
#--------------------------------------------------------------------#
# DAILY BULLETIN ON SOLAR AND GEOMAGNETIC ACTIVITY from the SIDC     #
# (RWC Belgium)                                                      #
#--------------------------------------------------------------------#
SIDC URSIGRAM 60222
SIDC SOLAR BULLETIN 22 Feb 2026, 1243UT
SIDC FORECAST 
SOLAR FLARES  : C-class flares expected, (probability >=50%)
GEOMAGNETISM  : Moderate (ISES: Major) magstorm expected (A>=50 or K=6)
SOLAR PROTONS : Quiet
PREDICTIONS FOR 22 Feb 2026  10CM FLUX: 109 / AP: 007
PREDICTIONS FOR 23 Feb 2026  10CM FLUX: 107 / AP: 042
PREDICTIONS FOR 24 Feb 2026  10CM FLUX: 107 / AP: 022

Solar Active Regions and flaring: Solar flaring activity was low over the
past 24 hours, with only C-class flares identified. The largest flare was a
C2.2 flare peaking on Feb 22 at 06:33 UTC, which was produced by SIDC
Sunspot Group 762 (NOAA Active Regions 4342, 4374). A total of 1 numbered
sunspot groups were identified on the disk over the past 24 hours, and
currently no sunspot on the disk. Solar flaring activity is expected to be
low over the next 24 hours, with C-class flares very likely.

Coronal mass ejections: No Earth-directed coronal mass ejections (CMEs)
were detected in the available coronagraph observations during last 24
hour.

Solar wind: Solar wind parameters were enhanced during the past 24 hours.
The solar wind speed ranged between 441 km/s and 734 km/s. The
interplanetary magnetic field ranged between 2 nT and 15 nT. The North-
South component (Bz) ranged between -10 and 14 nT. This is possibly due to
the early arrival of the high speed streams (HSSs) associated with the
extension of the negative polarity, equatorial, recurrent coronal hole
(SIDC Coronal Hole 147) which started to cross the central meridian since
Feb 20. In the next 24 hours, enhanced solar wind conditions are possible
with the further arrival of HSSs from the same coronal hole.

Geomagnetism: Geomagnetic conditions were globally at quiet to minor storm
conditions (NOAA Kp 1 to 5). It was locally over Belgium at quiet to active
conditions (K BEL 2 to 4). This is possibly due to the early arrival of the
high speed streams (HSSs) associated with the extension of the negative
polarity, equatorial, recurrent coronal hole (SIDC Coronal Hole 147) which
started to cross the central meridian since Feb 20. Active to moderate
storm conditions (k 4 to 6) are possible in the next 24 hours with the
further arrival of HSSs from the same coronal hole.

Proton flux levels: The greater than 10 MeV GOES proton flux was below the
threshold level over the past 24 hours and it is expected to remain so for
the next 24 hours.

Electron fluxes at GEO: The greater than 2 MeV electron flux, as measured
by GOES-18 satellite, increased and exceeded the 1000 pfu threshold level
from 20:00 UTC to 23:30 UTC on Feb 21 over the past 24 hours. It may exceed
the threshold level again in the next 24 hours. The greater than 2 MeV
electron flux, as measured by GOES-19 satellite, was below the 1000 pfu
threshold level in the last 24 hours, and is expected to remain so. The 24h
electron fluence was at normal levels and is expected to remain so in the
coming 24 hours.


TODAY'S ESTIMATED ISN  : 003, BASED ON 08 STATIONS.

SOLAR INDICES FOR 21 Feb 2026
WOLF NUMBER CATANIA    : ///
10CM SOLAR FLUX        : 110
AK CHAMBON LA FORET    : 024
AK WINGST              : 018
ESTIMATED AP           : 018
ESTIMATED ISN          : 012, BASED ON 17 STATIONS.

NOTICEABLE EVENTS SUMMARY
DAY BEGIN MAX  END  LOC    XRAY OP  10CM Catania/NOAA RADIO_BURST_TYPES 
NONE
END

BT

#--------------------------------------------------------------------#
# Solar Influences Data analysis Center - RWC Belgium                #
# Royal Observatory of Belgium                                       #
#                                                                    #
# Website         http://www.sidc.be.                                #
# E-mail          sidc-support@oma.be                                #
# To unsubscribe  http://www.sidc.be/registration/unsub.php          #
#                                                                    #
# Legal notices:                                                     #
# - Intellectual Property Rights:                                    #
#   http://www.astro.oma.be/common/internet/en/data-policy-en.pdf    #
# - Liability Disclaimer:                                            #
#   http://www.astro.oma.be/common/internet/en/disclaimer-en.pdf     #
# - Use and processing of your personal information:                 #
#   http://www.astro.oma.be/common/internet/en/privacy-policy-en.pdf #
#--------------------------------------------------------------------#