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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2024 Aug 19 1231 UTC

SIDC Forecast

Сонячні спалахи

M-class flares expected (probability >=50%)

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
19 Aug 2024	233	002
20 Aug 2024	233	007
21 Aug 2024	233	007

Solar Active Regions and flaring

Solar flaring activity was moderate over the past 24 hours. The largest flare was a M1.3-flare, with peak time 09:36 UTC on August 19, from NOAA AR 3785 (beta). There are currently 10 numbered active regions on the visible disk. NOAA AR 3784 is the most complex AR (beta-gamma-delta). The solar flaring activity is expected to be at moderate levels over the coming day with C-class flares expected and M-class flares probable and a low chance of X-class flares.

Корональні викиди маси

No new Earth-directed Coronal Mass Ejections (CMEs) have been detected in the available coronagraph images.

Корональні діри

A positive polarity low-latitude coronal hole crossed the central meridian. A high-speed stream from this coronal hole may enhance the solar wind environment near Earth on August 22.

Сонячний вітер

The solar wind at the Earth is slow, with speeds around 400 km/s and interplanetary magnetic field around 7nT, with the Bz reaching a minimum value of -5 nT. Slow solar wind conditions are expected to continue in the next 24h.

Geomagnetism

Geomagnetic conditions were globally and locally quiet to active (Kp 4- and K Bel 4). Quiet conditions are expected in the next 24 hours.

Proton flux levels

Over the past 24 hours the greater than 10 MeV GOES proton flux was at background levels and is expected to remain so over the next days.

Electron fluxes at geostationary orbit

The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold, and is expected to remain below the threshold during the next 24 hours. The 24h electron fluence was at normal levels and is expected to remain so.

Today's estimated international sunspot number (ISN): 227, based on 14 stations.

Solar indices for 18 Aug 2024

Wolf number Catania	///
10cm solar flux	231
AK Chambon La Forêt	016
AK Wingst	016
Estimated Ap	016
Estimated international sunspot number	209 - Based on 12 stations

Noticeable events summary

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

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