Prohlížíte si archiv sobota 1. července 2023

Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2023 Jul 01 1252 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
01 Jul 2023	160	007
02 Jul 2023	160	007
03 Jul 2023	160	007

Solar Active Regions and flaring

Solar flaring activity was at low levels over the last 24 hours with few low C-class flares. The largest flare was a C4.2-class flare produced by the NOAA Active Region AR-3354, which is currently the most complex region on the disc (Beta-gamma-delta). We expect the activity remaining mostly at low levels with several C-class flares, and possible isolated M-class flare in the next 24 hours.

Vyhazování koronální hmoty

No Earth-directed Coronal Mass Ejections (CME) were observed in the SOHO/LASCO coronograph images over the past 24 hours.

Koronální díra

A small equatorial coronal hole (negative polarity) has transited the central meridian today.

Solární bouře

The solar wind parameters showed a return to slow solar wind regime. The wind speed decreased form 550 km/s to 430km/h. The total interplanetary magnetic field (Bt) also decreased to values below 7 nT. The southward component (Bz) was fluctuating between -3.8 nT and 6.3 nT being manly positive. The interplanetary magnetic field phi angle was positive, directed outward the Sun.

Geomagnetism

Geomagnetic conditions were quiet to unsettled (NOAA Kp<4 and K_BEL<4). Geomagnetic activity is expected to remained quiet to unsettled.

Proton flux levels

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

Electron fluxes at geostationary orbit

Electron fluxes at GEO: The greater than 2 MeV electron flux was above the 1000 pfu threshold for a short period. It is expected to remain close to the threshold for the next 24 hours. The 24-hour electron fluence was at normal to moderate levels for the past 24 hours and it is expected to remain at these levels for the next 24 hours.

Today's estimated international sunspot number (ISN): 132, based on 12 stations.

Solar indices for 30 Jun 2023

Wolf number Catania	092
10cm solar flux	159
AK Chambon La Forêt	013
AK Wingst	008
Estimated Ap	009
Estimated international sunspot number	111 - Based on 29 stations

Noticeable events summary

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

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