Viewing archive of Sunday, 20 May 2018

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2018 May 20 1230 UTC

SIDC Forecast

Valid from 1230 UTC, 20 May 2018 until 22 May 2018
Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

10cm fluxAp
20 May 2018069007
21 May 2018069007
22 May 2018069007

Bulletin

No active regions on the visible solar disc. No C-class flares in past 24 h and the situation is not expected to change.

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

The solar wind speed at L1 is at 400 km /s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions have been quiet and are expected to remain so. On May 23, the high speed solar wind from the positive polarity extension of the northern polar coronal hole may arrive to the Earth and cause disturbed geomagnetic conditions (although it might pass north of the Earth without affecting it).

Today's estimated international sunspot number (ISN): 000, based on 22 stations.

Solar indices for 19 May 2018

Wolf number Catania///
10cm solar flux070
AK Chambon La Forêt007
AK Wingst003
Estimated Ap003
Estimated international sunspot number000 - Based on 21 stations

Noticeable events summary

DayBeginMaxEndLocStrengthOP10cmCatania/NOAARadio burst types
None

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

All times in UTC

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