Просмотр архива за четверг, 20 августа 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Существующий: 2020 Aug 20 1243 UTC

SIDC Forecast

Солнечные вспышки

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

Geomagnetism

Quiet (A<20 and K<4)

Солнечные протоны

Quiet

	10cm flux	Ap
20 Aug 2020	071	008
21 Aug 2020	071	008
22 Aug 2020	071	002

Bulletin

The solar activity was low over the past 24 hours. The X-ray flux was low and reached B-class level. For the next 24 hours the solar activity is expected to remain low.

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 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 305 and 340 km/s (DSCOVR), while its density slightly increased. The polarity of the Interplanetary Magnetic Field (IMF) was predominantly oriented away the Sun (phi angle in the positive sector), apart from 4-8UT when it was on the negative sector. Bz fluctuated between -2 and +2 nT. The magnitude of the magnetic field varied between 0 and 4 nT. Over the next 24 hours, there is a chance to see the combined effects of the wind associated with the CME on Aug 16th and the Coronal Hole (CH) at central meridial on Aug 17th can be anticipated to have an impact, which sould be followed by the HSS of the CH from Aug 19th.

The geomagnetic conditions were quiet to unsettled. The values registered for the past 24 hours were 0-3 for K Dourbes and 0-1for NOAA Kp. Unsettled to active conditions, are expected for the next 24 hours.

Today's estimated international sunspot number (ISN): 012, based on 18 stations.

Solar indices for 19 Aug 2020

Wolf number Catania	///
10cm solar flux	071
AK Chambon La Forêt	006
AK Wingst	005
Estimated Ap	006
Estimated international sunspot number	014 - Based on 30 stations

Noticeable events summary

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

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