Viewing archive of Tuesday, 26 May 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 May 26 1230 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

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

Solar protons

Quiet

	10cm flux	Ap
26 May 2015	105	007
27 May 2015	110	007
28 May 2015	120	014

Bulletin

Solar activity was very low. Some activity has emerged near the East limb, resulting in a small Eastward oriented CME. Flaring activity is expected to gradually increase to the lower C-level, due to a new active region that is currently rounding the East limb (S15). No Earth-bound CMEs were observed. The solar wind speed remains low in the range of 300-350 km/s. A small jump was observed in the Interplanetary Magnetic Field (IMF) near 1:30 UT. Geomagnetic conditions are quiet (K <4) and are expected to remain so till the arrival of a coronal hole high speed stream may increase activity on May 28.

Today's estimated international sunspot number (ISN): 039, based on 19 stations.

Solar indices for 25 May 2015

Wolf number Catania	062
10cm solar flux	097
AK Chambon La Forêt	010
AK Wingst	004
Estimated Ap	002
Estimated international sunspot number	045 - Based on 26 stations

Noticeable events summary

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

All times in UTC

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