Viewing archive of Wednesday, 12 June 2024

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2024 Jun 12 1231 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10cm flux	Ap
12 Jun 2024	161	005
13 Jun 2024	157	003
14 Jun 2024	155	003

Solar Active Regions and flaring

Solar flaring activity over the last 24 hours has been at low levels, with C-class flares only. The strongest flare was a C9.1 flare peaking at 04:43 UTC, associated with NOAA AR 3697 (previously beta-gamma-delta) which has rotated beyond the visible disk. There are currently six active regions on the solar disk. The most complex regions are NOAA AR 3707, 3709 and 3711 (all beta). NOAA AR 3703 and NOAA AR 3710 have rotated behind the west limb. NOAA AR 3704 has decayed into plage. Two new ARs, NOAA AR 3712 and NOAA AR 3713 are rotating on disk from the south-east limb. The solar flaring activity is expected to be at low levels over the next 24 hours, with C-class flares expected and a small chance of M-class flares.

Coronal mass ejections

An asymmetric halo CME was first detected around 22:43 on June 11 in SOHO/LASCO-C2. It is most likely backsided and it is not expected to have an impact on Earth. A Type II radio burst reported at 22:51 UTC on June 11, is most likely associated with this CME. The partial halo CME detected at 23:36 UTC on June 10 in SOHO/LASCO-C2 is most likely backsided and it is not expected to have an impact on Earth.

Solar wind

The Earth is inside the slow solar wind, with speed values ranging from 335 km/s to 417 km/s and an interplanetary magnetic field around 5 nT. The Bz component varied between -3.8 nT and 5.3 nT. The interplanetary magnetic field phi angle was predominantly in the positive sector. Slow solar wind conditions are expected over the next 24 hours.

Geomagnetism

Geomagnetic conditions were globally and locally at quiet levels (NOAA Kp and K BEL between 0 and 2). Similar quiet conditions are expected over the next 24 hours.

Proton flux levels

The greater than 10 MeV proton flux was below the threshold level over the past 24 hours but has increased near the threshold around 05:00 UTC, possibly as a result of flaring activity from NOAA AR 3697. It is expected to remain below the threshold level over the next 24 hours but could increase in case of further events particularly from NOAA AR 3697.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux was below the threshold level in the last 24 hours and is expected to remain so over the next 24 hours. The 24h electron fluence is presently at normal levels and is expected to remain so over the next 24 hours.

Today's estimated international sunspot number (ISN): 113, based on 16 stations.

Solar indices for 11 Jun 2024

Wolf number Catania	113
10cm solar flux	165
AK Chambon La Forêt	009
AK Wingst	013
Estimated Ap	013
Estimated international sunspot number	103 - Based on 24 stations

Noticeable events summary

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

All times in UTC

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