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Daily bulletin on solar and geomagnetic activity from the SIDC

Випущено: 2015 May 02 1230 UTC

SIDC Forecast

Сонячні спалахи

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

Geomagnetism

Quiet (A<20 and K<4)

Сонячні протони

Quiet

	10cm flux	Ap
02 May 2015	105	010
03 May 2015	110	011
04 May 2015	115	011

Bulletin

Flaring activity was very low. A few rather narrow CMEs were observed in SOHO/LASCO C2 images, but all seem to have no Earth-directed component. One CME (first measurement at 22:24 UT) was related to activity at the West limb, while another one (first measurement at 7:48 UT) was due to an eruption at the East limb. H alpha images indicate that a few filaments, located in the southern hemisphere, are getting unstable and might erupt in the next few days. Flaring at the C-level is possible (chance of 30%). Solar wind speed is in the 400-500 km/s range. The magnitude of the Interplanetary Magnetic Field (IMF) is between 8 and 13 nT. The quiet to unsettled (K=0 to 3) geomagnetic conditions are expected to continue, with some chance for geomagnetic active levels (K=4).

Today's estimated international sunspot number (ISN): 020, based on 15 stations.

Solar indices for 01 May 2015

Wolf number Catania	///
10cm solar flux	100
AK Chambon La Forêt	012
AK Wingst	005
Estimated Ap	005
Estimated international sunspot number	015 - Based on 19 stations

Noticeable events summary

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

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