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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2022 Sep 06 1233 UTC

SIDC Forecast

Сонячні спалахи

C-class flares expected, (probability >=50%)

Geomagnetism

Active conditions expected (A>=20 or K=4)

Сонячні протони

Quiet

	10cm flux	Ap
06 Sep 2022	124	016
07 Sep 2022	122	016
08 Sep 2022	120	007

Bulletin

Solar flaring activity was moderate during the last 24 hours, with an M1 event detected from NOAA Active Region (AR) 3089 (Catania group 22) at 05 Sep 18:05 UTC. Numerous C-class flares were also detected in the past 24 hours, also from the same AR. As NOAA AR 3089 has now turned away from the visible side of the Sun, there is only a small chance for the detection of a C-class flare from this AR. Further C-class flare activity remains possible in the next 24 hours, mostly from NOAA AR 3092 and 3094.

A partial halo Corona Mass Ejection (CME) can been seen in LASCO-C2/SOHO and STEREO/COR2 images yesterday at 16:36 UTC. This is a back-sided event and is not expected to affect Earth.

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 was above the 1000 pfu threshold during the last 24 hours. In the next 24 hours it is expected to remain above this threshold level for extended periods of time. The 24h electron fluence was at moderate levels during the last 24 hours and is expected to remain at these levels in the next 24 hours.

The Solar Wind (SW) conditions remained affected by the High Speed Stream (HSS) that arrived on 3 Sep. The SW speed varied between 530 and 620 km/s over the last 24 hours. The total magnetic field (Bt) very gradually dropped from 8 to 4 nT, while its Bz component ranged between -7 to 7 nT. The interplanetary magnetic field phi angle was mostly directed away from the Sun during the last 24 hours. The SW conditions are expected to decline in speed very gradually in the next 24 hours, while the magnetic field strength is expected to remain low.

Geomagnetic conditions reached globally and locally active levels (Kp and K Doubres 3-4) over the last 24 hours. Unsettled conditions (Kp=3) are expected for the next 24 hours with possible intervals of active conditions (Kp=4).

Today's estimated international sunspot number (ISN): 086, based on 19 stations.

Solar indices for 05 Sep 2022

Wolf number Catania	///
10cm solar flux	130
AK Chambon La Forêt	035
AK Wingst	039
Estimated Ap	036
Estimated international sunspot number	078 - Based on 24 stations

Noticeable events summary

Provided by the Solar Influences Data analysis Center© - SIDC - Processed by SpaceWeatherLive

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