Viewing archive of Thursday, 17 November 2016

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2016 Nov 17 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
17 Nov 2016	081	006
18 Nov 2016	081	010
19 Nov 2016	081	017

Bulletin

Solar activity was very low with at most background X-ray flux levels and no significant flaring activity observed. NOAA region 2609 (Catania group 60) has decayed while NOAA region 2610 (Catania group 58) has grown but remained inactive. X-ray flux is expected to remain below C level although the probability for C-level flaring has increased. No Earth directed CMEs have been observed in coronagraph data. Proton flux values are at background levels and expected to remain so.

Solar wind saw a stabilisation at close to nominal conditions. Solar wind was around 420 km/s. Total magnetic field was in the 3-4nT range with Bz variable and the phi angle in the negative sector. Solar wind is expected to remain nominal until later tomorrow when a moderate increase in solar wind parameters may be expected from a high speed stream associated to a positive polarity equatorial coronal hole.

Geomagnetic conditions were quiet to unsettled (NOAA Kp 0-2, local K 0-3). Quiet geomagnetic conditions are expected with later tomorrow unsettled conditions becoming more likely and also isolated active periods possible.

Today's estimated international sunspot number (ISN): 029, based on 12 stations.

Solar indices for 16 Nov 2016

Wolf number Catania	///
10cm solar flux	081
AK Chambon La Forêt	010
AK Wingst	005
Estimated Ap	004
Estimated international sunspot number	026 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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