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Daily bulletin on solar and geomagnetic activity from the SIDC

Vydáno: 2014 Jan 20 1305 UTC

SIDC Forecast

Sluneční erupce

Eruptive (C-class flares expected, probability >=50%)

Geomagnetism

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

Sluneční protony

Quiet

	10cm flux	Ap
20 Jan 2014	131	003
21 Jan 2014	134	009
22 Jan 2014	137	003

Bulletin

Seven sunspot groups were reported by NOAA today. Three more groups still have no NOAA numbers. Two of these unnumbered groups rapidly emerged yesterday in the SW and SE quadrants of the Sun, and another group appeared from behind the east solar limb. No flares were observed in any of the unnumbered groups yet, although the dynamic sunspot group in the SE quadrant may become flare-productive. All the flares in the past 24 hours occurred in the NOAA AR 1959, the strongest of them being the C3.4 flare peaking at 02:20 UT today. We expect further flaring activity on the C-level, with M-class flares possible but unlikely. The Earth is currently inside a slow (around 300 km/s) solar wind flow with weak to average (3-4 nT) interplanetary magnetic field magnitude. We expect quiet geomagnetic conditions in the coming hours. Tomorrow we expect the arrival of a fast flow from a low-latitiude coronal hole in the northern hemisphere. Active geomagnetic conditions will be possible.

Today's estimated international sunspot number (ISN): 104, based on 06 stations.

Solar indices for 19 Jan 2014

Wolf number Catania	///
10cm solar flux	128
AK Chambon La Forêt	002
AK Wingst	001
Estimated Ap	001
Estimated international sunspot number	076 - Based on 15 stations

Noticeable events summary

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

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