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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2017 Nov 02 1230 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

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

Protoni solari

Quiet

	10cm flux	Ap
02 Nov 2017	073	010
03 Nov 2017	074	018
04 Nov 2017	076	007

Bulletin

No C-class flares in past 24 h. All ARs have decayed into plages, the Sun is spotless. There is a region rotating into view from the east limb, but it does not seem very active from STEREO observations. The X-ray flux is expected to remain below C level.

No Earth directed Coronal Mass Ejections (CMEs) have been detected. Solar protons have remained at background levels over the past 24 h.

Geomagnetic conditions have been quiet (k = 1-2). Solar wind speed has been slowly increasing since last night (but it is still slow, under 400 km/s), together with relatively elevated magnetic fields (reaching 14 nT, with Bz mostly positive). The Earth may only see the northern boundary of the high speed solar wind stream expected from the coronal hole in the southern solar hemisphere, producing only a mild geomagnetic impact. Active conditions can be expected in the next 48 h.

Today's estimated international sunspot number (ISN): 000, based on 15 stations.

Solar indices for 01 Nov 2017

Wolf number Catania	///
10cm solar flux	073
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	000 - Based on 25 stations

Noticeable events summary

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

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