Viewing archive of Tuesday, 24 December 2019

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2019 Dec 24 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
24 Dec 2019	073	007
25 Dec 2019	074	011
26 Dec 2019	075	001

Bulletin

A new (solar cycle 25) active region emerged near the southeast limb (and a very small one in the northern hemisphere), no NOAA number yet, the Sun is not spotless anymore. Solar activity has been very low, no flares in the past 24 h. Low solar activity expected for the next 48 h, but the development of the new ARs may increase slightly the activity.

No Earth directed CMEs in past 24 h. Solar protons have remained at background levels over the past 24 h.

The solar wind speed is at 340 km/s with interplanetary magnetic field magnitude of 5 nT. Geomagnetic conditions have been quiet. The fast solar wind emanating from a small equatorial negative polarity coronal hole might affect Earth on December 24-25, but its effect will be weak (mostly unsettled conditions expected, with possible isolated active periods).

Today's estimated international sunspot number (ISN): 014, based on 09 stations.

Solar indices for 23 Dec 2019

Wolf number Catania	000
10cm solar flux	073
AK Chambon La Forêt	///
AK Wingst	003
Estimated Ap	002
Estimated international sunspot number	000 - Based on 18 stations

Noticeable events summary

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

All times in UTC

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