Viewing archive of Sunday, 18 March 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 Mar 18 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
18 Mar 2018	069	031
19 Mar 2018	069	016
20 Mar 2018	069	007

Bulletin

Solar X ray flux remained below B level. The newly numbered region (NOAA 2702) has remained quiet and appears stable. Solar X-ray flux is still expected to remain below C level.

No Earth directed CMEs have been observed in coronagraph data.

Proton flux levels were at background values and are expected to remain so.

Solar wind remained enhanced with solar wind speed between 475km/s and 525 km/s. Total magnetic field was mainly nominal with a maximum of 7nT. The magnetic field phi angle seems to have switched into a positive sector at the start of the period. Enhanced solar wind conditions are expected to continue at least today before beginning to subside.

Geomagnetic conditions were quiet to unsettled (local K Dourbes and NOAA Kp 1-3). Active geomagnetic conditions could still occur today and into tomorrow.

Today's estimated international sunspot number (ISN): 008, based on 07 stations.

Solar indices for 17 Mar 2018

Wolf number Catania	///
10cm solar flux	070
AK Chambon La Forêt	017
AK Wingst	016
Estimated Ap	016
Estimated international sunspot number	000 - Based on 06 stations

Noticeable events summary

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

All times in UTC

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