Viewing archive of Thursday, 25 June 2015

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2015 Jun 25 1230 UTC

SIDC Forecast

Solar flares

M-class flares expected (probability >=50%)

Geomagnetism

Major magstorm expected (A>=50 or K>=6)

Solar protons

Warning condition (activity levels expected to increase, but no numeric forecast given)

	10cm flux	Ap
25 Jun 2015	110	047
26 Jun 2015	108	032
27 Jun 2015	102	019

Bulletin

NOAA AR 2371 produced an M7.9 flare peaking at 08:16 UT. A full halo CME with speeds up to 1600 km/s was associated with the flare. An arrival of this CME to Earth is likely and expected for June 26 around 16:00 UT, severe storm conditions may occur. A shock-like structure arrived to ACE at 12:56 UT on June 24, marking the expected arrival of the CME from June 22. Solar wind speed jumped to 750 km/s and the interplanetary magnetic field to 12 nT. Geomagnetic conditions reached major storm levels on June 25 at planetary levels, and minor storm conditions locally (Kp=6 and K Dourbes = 5).

Today's estimated international sunspot number (ISN): 022, based on 22 stations.

Solar indices for 24 Jun 2015

Wolf number Catania	///
10cm solar flux	110
AK Chambon La Forêt	021
AK Wingst	016
Estimated Ap	018
Estimated international sunspot number	027 - Based on 27 stations

Noticeable events summary

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

All times in UTC

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