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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2020 Nov 06 1231 UTC

SIDC Forecast

Sluneční erupce

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

Geomagnetism

Quiet (A<20 and K<4)

Sluneční protony

Quiet

	10cm flux	Ap
06 Nov 2020	091	009
07 Nov 2020	091	010
08 Nov 2020	091	007

Bulletin

The sunspot region (Catania sunspot group 50, NOAA-AR 2781) has continued to show some flaring activities, including a C9.0-class flare peaking at 21:56 UTC on November 5. The flaring activity is expected to continue with more C-class flare coming from NOAA-AR 2781, and with a small chance of M-class flare.

No coronal mass ejection was observed to be associated with the C9.0-class flare in the sunspot region (Catania sunspot group 50, NOAA-AR 2781). Also, no Earth directed coronal mass ejections were observed in the available coronagraphic imagery in the last 24 hours.

The greater than 10 MeV proton flux was at background levels over the past 24 hours. It is expected to stay at background levels for the next 24 hours. The greater than 2 MeV electrons flux was above the 10^3 pfu threshold between 13:00 UTC and 19:00 UTC on November 5 in response to the slight enhancement of the solar wind parameters. More periods of electrons flux being above the 10^3 pfu threshold are expected.

The Earth is now under the influence of the solar wind streams affected by the south polar coronal hole (negative polarity). The solar wind parameters (DSCOVR) showed slightly enhanced values, with the solar wind speed increasing from about 300 km/s to 500 km/s, the total interplanetary magnetic field reaching 10.4 nT, and the Bz magnetic field components fluctuating between -7.7 nT and 8.0 nT. The solar wind parameters are expected to remain slightly enhanced today and tomorrow due to the influence of the solar wind coming from the south coronal hole.

Geomagnetic conditions were mostly quiet (with K-NOAA index ranging between 1 and 2), with some periods of unsettled conditions observed by K-Dourbes index in response to the slight enhanced solar wind parameters. The geomagnetic conditions are expected to be mostly quiet with some periods of unsettled conditions.

Today's estimated international sunspot number (ISN): 037, based on 20 stations.

Solar indices for 05 Nov 2020

Wolf number Catania	///
10cm solar flux	091
AK Chambon La Forêt	011
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	026 - Based on 27 stations

Noticeable events summary

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

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