Viewing archive of Saturday, 16 May 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 May 16 1231 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
16 May 2020	069	003
17 May 2020	070	005
18 May 2020	070	007

Bulletin

The Sun was spotless. Solar activity was at very low levels. A small active region (AR) is expected to round the northeast limb later today. There's also a smaller AR at the southeast limb. Solar activity is expected to stay at very low levels, with a small chance on a C-class flare.

The greater than 10 MeV proton flux and the greater than 2 MeV electron flux were at nominal levels during the last 24 hours and are expected to remain so.

No earth-directed coronal mass ejections (CMEs) were observed in available coronagraphic imagery.

Solar wind speed varied mostly between 300 and 330 km/s, with Bz varying between -3 and +3 nT (DSCOVR). The direction of the interplanetary magnetic field (phi angle) was in a predominately positive sector (away from the Sun).

Geomagnetic activity was at quiet levels. Geomagnetic conditions are expected to be mostly quiet with an occasional unsettled episode possible.

Today's estimated international sunspot number (ISN): 000, based on 19 stations.

Solar indices for 15 May 2020

Wolf number Catania	///
10cm solar flux	068
AK Chambon La Forêt	///
AK Wingst	003
Estimated Ap	004
Estimated international sunspot number	000 - Based on 27 stations

Noticeable events summary

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

All times in UTC

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