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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2022 Mar 01 1232 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
01 Mar 2022	100	007
02 Mar 2022	105	005
03 Mar 2022	110	007

Bulletin

Solar flaring activity was very low during the last 24 hours, as no flares above the B-class level were detected during the last 24 hours. However, NOAA Active Regions (AR) 2956, 2957, and 2958 maintain their complex magnetic configuration and isolated C-class events are likely to occur during the next 24 hours.

No Earth directed Coronal Mass Ejections (CME) have been observed in the available coronagraph data. Out of the three CME that are currently automatically detected by the CACTUS software package, two are back-sided and the other too close to the western limb to be geo-effective.

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 remained below the 1000 pfu alert threshold and is expected to remain below this threshold during the next 24 hours. The 24h electron fluence was at nominal levels and is expected to remain so.

The Solar Wind (SW) conditions (as measured by the DSCOVR and ACE satellites) are still under the influence of a High Speed Stream (HSS) that arrived on February 26, albeit the conditions are now milder. The SW speed varied between 500 and 550 km/s during the last 24 hours. The total magnetic field (Btot) varied between 3 and 6 nT, while its Bz component varied between -5 and 6 nT over the last 24 hours. The interplanetary magnetic field phi angle was almost always positive (directed away from the Sun). These enhanced solar wind conditions are expected to gradually return to a slow wind regime during the next 24 hours. An equatorial coronal hole with positive polarity and a latitude range of S20 to N20 crossed the central meridian today, and an associated HSS is expected to arrive in approximately three days.

Geomagnetic conditions were globally and locally quiet to moderate (NOAA Kp 2-3 and K-BEL 1-3). Geomagnetic conditions are expected to be quiet for the next 24 hours.

Today's estimated international sunspot number (ISN): 064, based on 09 stations.

Solar indices for 28 Feb 2022

Wolf number Catania	046
10cm solar flux	099
AK Chambon La Forêt	011
AK Wingst	008
Estimated Ap	006
Estimated international sunspot number	055 - Based on 39 stations

Noticeable events summary

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

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