Перегляд архіву середа, 30 жовтня 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2019 Oct 30 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

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

Сонячні протони

Quiet

	10cm flux	Ap
30 Oct 2019	069	014
31 Oct 2019	069	007
01 Nov 2019	069	007

Bulletin

No active regions visible on the disk. Solar activity has been very low, no flares in the past 24 h. Low solar activity expected.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 hours.

The solar wind speed is at 390 km/s with interplanetary magnetic field magnitude of 14 nT. Geomagnetic conditions have been quiet to unsettled. The interplanetary magnetic field switched polarity (from positive to negative) around 20:00 UT on October 29, together with a steady increase in its magnitude, marking the upcoming arrival of the high speed stream from a negative polarity coronal hole. If the CME from October 25 arrived to the Earth (it may have missed it), its signatures are too weak (yet) to clearly identify it in the data.

Today's estimated international sunspot number (ISN): 000, based on 12 stations.

Solar indices for 29 Oct 2019

Wolf number Catania	000
10cm solar flux	069
AK Chambon La Forêt	011
AK Wingst	007
Estimated Ap	008
Estimated international sunspot number	000 - Based on 26 stations

Noticeable events summary

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

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