Viewing archive of Thursday, 30 July 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jul 30 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
30 Jul 2015	101	011
31 Jul 2015	101	010
01 Aug 2015	101	007

Bulletin

Solar activity is low, no C-class flares in past 24 h. NOAA AR 2390 has decreased in size and complexity, no large flares expected.

Geomagnetic conditions are quiet, with solar wind speeds around 350 km/s and interplanetary magnetic field magnitudes of 5 nT. The fast solar wind from a coronal hole is expected to arrive within 48h, up to minor storm periods are possible.

Today's estimated international sunspot number (ISN): 087, based on 21 stations.

Solar indices for 29 Jul 2015

Wolf number Catania	094
10cm solar flux	101
AK Chambon La Forêt	012
AK Wingst	007
Estimated Ap	006
Estimated international sunspot number	074 - Based on 31 stations

Noticeable events summary

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

All times in UTC

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