SDO & wizual 21.06.2022

[tafig]

Po sporej przerwie wracamy do naszego działu. Dzisiaj udało mi się przeprowadzić obserwację. Zaobserwowałem 5 grup, w tym 26 plam. Z tych pięciu grup zdecydowanie najciekawsza jest grupa z numerem 3038 posiadająca aż 6 półcieni, a ogółem naliczyłem 18 plam. Grupa znajduje się na północnej półkuli tarczy słonecznej i jest już poza centrum. 3038 to silnie rozbudowana grupa, w której zauważymy różne półcienie i symetryczne i asymetryczne. Pośród tych półcieni znajduje się jeszcze kilka plam bez półcieni. Pozostałe grupy to: 3032 już przy zachodnim brzegu, grupa z dwiema plamami i jednym symetrycznym półcieniem, grupa 3034 jedno-plamowa z symetrycznym półcieniem, 3035 w teleskopie to 4 plamy bez półcieni; na SDO można się dopatrzeć jednak półcień szczątkowy, nowa grupa bez oznaczenia na wschodnim brzegu tarczy z symetrycznym półcieniem. Liczba Wolfa 76 a wskaźnik SN 116. Na SDO sprawa grup ma się tak:
Ta najważniejsza 3038


Klasa magnetyczna Beta-Gamma, Lokalizacja N15W07
Liczba punktów 24 Obszar 280, klasa Dki możliwe rozbłyski klasy C to 70%
Komentarz SIDC z 20.06.2022
COMMENT: The solar flaring activity was at low levels over the past 24
hours with only C-class flares from different sunspot groups. Currently
several sunspots are visible on the west hemisphere seen from Earth and
only three of them show some flaring activity: Catania sunspots group 45
(NOAA active region 3030), Catania sunspots group 44 (NOAA active region
3031) and Catania sunspots group 53 (NOAA active region 3038). The larger
flare was a C4.5-class flare from Catania sunspots group 45 (NOAA active
region 3030) at 16:10 UTC.

No Earth-directed Coronal Mass Ejections (CMEs) have been detected in the
available coronagraph images over the past 24 hours.

The greater than 10 MeV proton flux was at nominal levels over the past 24
hours and is expected to remain so for the next 24 hours. The greater than
2 MeV electron flux exceeded the 1000 pfu alert threshold in response to
the high solar wind speed associated with the Coronal Hole in the past
days. It is expected to remain so during the next 24 hours. The electron
fluence was at moderate levels and is expected to remain so as long as
Earth remains under the influence of the solar wind associated with the
coronal hole.

The solar wind parameters in Earth environment continued to be elevated due
to the influence of the fast solar wind speed streams associated with the
equatorial coronal hole (positive polarity) that reached the central
meridian last week. During the first period, the solar wind speed was above
500 km/s, and more particularly on June 20 between 13:00 UTC and 18:00 UTC
the passage of a solar wind structure (negative polarity) was observed at a
speed of 600-653 km/s. From Jun 20 around 21:00 UTC, the solar wind speed
started to decreased to reach the current value of 450-500 km/s. The
interplanetary magnetic field magnitude showed elevated values around 9-10
nT in the beginning of the period, then decreased to values below 7 nT.
The Bz component of the interplanetary magnetic field was predominantly
negative and fluctuated between -6.25 nT and 4.5 nT. The solar wind
conditions are expected to return slowly to slow solar wind speed regime in
the following days.

The geomagnetic conditions were mostly quiet to unsettle (NOAA Kp and local
K-Belgium 1-3). Active conditions (K_BEL = 4) were observed from local
stations in Belgium between 15:00 UTC and 21:00 UTC on June 20 following
the passage of the solar wind structure and the prolonged negative values
of the Bz component of the interplanetary magnetic field. The geomagnetic
conditions are expected to be mostly quiet with possible sporadic periods
of unsettled conditions.

TODAY'S ESTIMATED ISN : 102, BASED ON 19 STATIONS.

SOLAR INDICES FOR 20 Jun 2022