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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2020 Oct 31 1231 UTC

SIDC Forecast

Valid from 1230 UTC, 31 Oct 2020 until 02 Nov 2020
Brillamenti solari

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

10cm fluxAp
31 Oct 2020083007
01 Nov 2020084007
02 Nov 2020086007

Bulletin

The two active regions (ARs) visible on the disk NOAA AR 2778 and 2779 have decayed further and not produced any C-class flares. Two new ARs are rotating into view over the east limb. C-class flares are possible.

No Earth directed CME was observed in the past 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 are above the 10^3 pfu threshold. The electrons are expected to descend below the threshold.

The speed of the solar wind has been fairly constant around 430 km/s in the past 24 hours. Bz was never below -5 nT and B reached 6 nT. The solar wind speed is expected to remain low over the next 24 hours.

The geomagnetic conditions reached only unsettled levels both locally and planetary (Kp = 3 and KDourbes = 3). The CME from 26 October can arrive to the Earth tomorrow and cause up to active conditions. Otherwise quiet conditions expected in the next 24 hours.

Today's estimated international sunspot number (ISN): 025, based on 19 stations.

Solar indices for 30 Oct 2020

Wolf number Catania037
10cm solar flux080
AK Chambon La Forêt009
AK Wingst005
Estimated Ap004
Estimated international sunspot number031 - Based on 20 stations

Noticeable events summary

DayBeginMaxFineLocStrengthOP10cmCatania/NOAARadio burst types
Nessuna

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

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Notizie sul meteo spaziale

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