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Daily bulletin on solar and geomagnetic activity from the SIDC

Emesso: 2013 Jun 18 1153 UTC

SIDC Forecast

Brillamenti solari

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

Geomagnetism

Quiet (A<20 and K<4)

Protoni solari

Quiet

	10cm flux	Ap
18 Jun 2013	130	006
19 Jun 2013	130	005
20 Jun 2013	130	006

Bulletin

The background X-ray radiation level has increased to just below the C-level. Catania 6 (NOAA AR 1773) has grown a little. It has the potential to flare in the C-level. The knot of Catania sunspot groups 2, 3, 5, 7 (NOAA AR 1772, 1770, 1774 and 1775 respectively) and 8 has a large potential to flare in the C-level. There is a chance for M-flaring activity, below 50% however. A large coronal hole is visible on the east side of the central meridian in the northern hemisphere. The lower boundary extends to about 25°N. The fast solar wind emanating from this hole can possibly reach the earth in 3-4 days.

Today's estimated international sunspot number (ISN): 075, based on 14 stations.

Solar indices for 17 Jun 2013

Wolf number Catania	112
10cm solar flux	124
AK Chambon La Forêt	008
AK Wingst	004
Estimated Ap	003
Estimated international sunspot number	078 - Based on 22 stations

Noticeable events summary

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

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