Vaata neljapäev, 22 oktoober 2020 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2020 Oct 22 1236 UTC

SIDC Forecast

Valid from 1230 UTC, 22 Oct 2020 until 24 Oct 2020
Päikesepursked ehk loited

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

Geomagnetism

Active conditions expected (A>=20 or K=4)

Päikese prootonid

Quiet

10cm fluxAp
22 Oct 2020074013
23 Oct 2020073009
24 Oct 2020074010

Bulletin

Solar flaring activity was at very low levels. No significant flares have been recorded. Solar activity is expected to remain at very low levels. Catania group 45 (NOAA AR 2776 - alpha classification - SE) is very gradually decaying. Plage on NW is yet to form as region.

No Earth directed Coronal Mass Ejections (CMEs) were observed in the available coronagraphic imagery.

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 electron flux was at background to nominal levels over the past 24 hours and is expected to remain so over the next 24 hours.

The speed of the solar wind varied between 320 and 415 km/s (DSCOVR). The polarity of the Interplanetary Magnetic Field (IMF) was predominantly towards the Sun (phi angle in the negative sector). Bz fluctuated between -6 and +7 nT. The magnitude of the magnetic field varied between 1 and 9 nT. A small positive polarity Coronal Hole (CH) is crossing Central Meridian (CM). Over the next 24 hours, the solar wind parameters are expected to increase, due to possible impacts of hish speed stream from the CHs that crossed CM on Oct 17-19.

The geomagnetic conditions were quiet to unsettled. The values registered for the past 24 hours were 1-3 for K Dourbes and NOAA Kp. Quiet to unsettled conditions, with a possible active period, are expected for the next 24 hours.

Today's estimated international sunspot number (ISN): 010, based on 18 stations.

Solar indices for 21 Oct 2020

Wolf number Catania012
10cm solar flux074
AK Chambon La Forêt014
AK Wingst009
Estimated Ap008
Estimated international sunspot number010 - Based on 18 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

Kõik ajad UTC-s

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