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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2022 Mar 24 1244 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
24 Mar 2022	107	016
25 Mar 2022	107	017
26 Mar 2022	107	017

Bulletin

The solar activity was active with several C-class flares recorded over the last 24 hours. The most important flare was a C8.1-class flare observed on March 24 with a peak time at 01:42 UTC from the newly numbered sunspot regions NOAA-AR 2975 close to the limb. For the next 24 hours, C-class flares are expected.

No Earth directed Coronal Mass Ejection (CME) has been detected in the available coronagraph imagery over the last 24 hours.

The greater than 10 MeV proton flux was at nominal levels in the past 24 hours and is expected to remain at nominal levels in the next 24 hours. The greater than 2 MeV electron flux remained below the 1000 pfu alert threshold and is expected to be close to the threshold in the next 24 hours. The greater than 2 MeV electron fluence was moderate levels in the past 24 hours and is expected to be at between nominal and moderate levels in the next 24 hours.

The solar wind parameters in Earth environment (as recorded by DSCOVR) showed a fast solar wind speed regime. The solar wind speed increased from about 400 km/s to the current values around 550 km/s, the interplanetary magnetic field reached 9.9 nT on March 24 around 00:00 UTC then decreased to values around 5 nT. The southward Bz-component was fluctuating between -6.8 nT and 7.8 nT. The solar wind parameters are reflecting high-speed streams associated to the equatorial coronal hole facing Earth last March 20 (positive magnetic polarity).

The geomagnetic conditions were quiet to unsettled levels (K-BEL and NOAA- Kp recorded values of 1-3). Geomagnetic conditions are expected to be unsettled with possible short periods of active conditions.

Today's estimated international sunspot number (ISN): 045, based on 17 stations.

Solar indices for 23 Mar 2022

Wolf number Catania	///
10cm solar flux	106
AK Chambon La Forêt	015
AK Wingst	///
Estimated Ap	008
Estimated international sunspot number	046 - Based on 29 stations

Noticeable events summary

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

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