Viewing archive of Friday, 25 January 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Jan 25 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
25 Jan 2019	072	022
26 Jan 2019	072	015
27 Jan 2019	071	011

Bulletin

During last 24 hours the level of solar flaring activity increased, however all reported flares were only A-class and B-class flares. Since NOAA AR 2733 still has beta configuration of its photospheric magnetic field we expect such a level of solar activity to persist in the coming hours. The isolated C-class flares are also possible, although not very probable. There were no Earth directed CMEs reported during last 24 hours and the solar protons remained at the background level.

The Earth is still inside the fast solar wind with the speed of 610 km/s. The interplanetary magnetic field magnitude is presently about 5 nT. The longer intervals of negative value of the Bz component of the interplanetary magnetic field and the high solar wind speed induced disturbed geomagnetic conditions. Around the midnight and early morning of January 25 local station at Dourbes and NOAA reported K=5 and Kp=5, respectively. Presently geomagnetic conditions are unsettled to active and we expect such a conditions to persist in the coming hours, with possibly isolated intervals of minor storm conditions (up to K=5).

Today's estimated international sunspot number (ISN): 025, based on 11 stations.

Solar indices for 24 Jan 2019

Wolf number Catania	///
10cm solar flux	072
AK Chambon La Forêt	026
AK Wingst	021
Estimated Ap	021
Estimated international sunspot number	023 - Based on 19 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page