Viewing archive of Friday, 13 March 2020

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2020 Mar 13 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
13 Mar 2020	070	010
14 Mar 2020	069	008
15 Mar 2020	069	006

Bulletin

During last 24 hours, solar flaring activity remained to be very low, without any flares reported. We expect such a low level of flaring activity to persist in the coming hours. No Earth directed CMEs have been observed in coronagraph data and proton flux levels were at background values, and are expected to remain so.

The solar wind speed is presently about 430 km/s and the interplanetary magnetic field magnitude is 4 nT. Starting from yesterday midday, the in situ observations show; the solar wind speed increasing, simultaneously with the temperature increase and increase of the interplanetary magnetic field magnitude. All this indicates arrival of the solar wind from the small negative polarity coronal hole that crossed central meridian in the evening of March 8. As expected, the impact on the Earth is small, the geomagnetic conditions were mostly quiet to unsettled and we expect them to stay so in the coming hours.

Today's estimated international sunspot number (ISN): 000, based on 18 stations.

Solar indices for 12 Mar 2020

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	014
AK Wingst	006
Estimated Ap	006
Estimated international sunspot number	000 - Based on 28 stations

Noticeable events summary

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

All times in UTC

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