Vaata esmaspäev, 9 november 2020 arhiivi

Daily bulletin on solar and geomagnetic activity from the SIDC

Välja antud: 2020 Nov 09 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 09 Nov 2020 until 11 Nov 2020
Päikesepursked ehk loited

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

Geomagnetism

Quiet (A<20 and K<4)

Päikese prootonid

Quiet

10cm fluxAp
09 Nov 2020090003
10 Nov 2020090003
11 Nov 2020090003

Bulletin

Solar activity was at very low levels. NOAA 2780 became spotless, whereas NOAA 2781 continued its gradual decay. This sunspot group still has some magnetic polarity mixing in its intermediate region. Two active regions near the southeast limb are about to rotate into view. Solar activity is expected to be at low levels, with a slight chance on an M-class flare.

The greater than 10 MeV proton flux was at nominal levels and expected to remain so. The greater than 2 MeV electron flux was at nominal levels, reaching a maximum of 980 pfu at 16:15UT. The electron flux may slightly exceed the 1000 pfu alert threshold during the next period, but the 24h electron fluence is expected to remain at nominal levels.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery. Combined SOHO and STEREO-A coronagraphic imagery indicated that a CME observed around 20UT on 08 November was a farside event. A reconnection event near S25W45 between 15 and 17UT had no obvious associated CME.

Solar wind speed decreased from initial values near 460 km/s to about 360 km/s currently (DSCOVR). Bz varied between -2 and +4 nT, remaining positive after 19UT. The interplanetary magnetic field (phi angle) was predominantly directed towards the Sun (negative sector).

Geomagnetic activity was at quiet levels and is expected to remain so.

Today's estimated international sunspot number (ISN): 025, based on 18 stations.

Solar indices for 08 Nov 2020

Wolf number Catania///
10cm solar flux090
AK Chambon La Forêt006
AK Wingst004
Estimated Ap004
Estimated international sunspot number040 - Based on 21 stations

Noticeable events summary

DayBeginMaxLõppLocStrengthOP10cmCatania/NOAARadio burst types
Puuduvad

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

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