Viewing archive of Friday, 25 July 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Jul 25 1229 UTC

SIDC Forecast

Solar flares

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

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
25 Jul 2014	109	011
26 Jul 2014	115	007
27 Jul 2014	120	007

Bulletin

Solar activity has been mostly quiet except for Catania group 22 (NOAA AR 2121) which did produce another C2 flare peaking at 7:02 UT. The background X-ray flux rose slightly to around the B3 level. Similar conditions (essentially quiet but with a significant chance for an occasional low level C flare) are expected to continue with an increasing C flare probability as some returning active regions are turning into view over the next days. These will eventually also raise a slight chance for M level flares. No Earth directed CME's have been observed. After reaching maxima of just over 400km/s at the start of the reporting period, solar wind speed decreased to a minimum of about 310 km/s and later increased again gradually to values presently about 360 km/s. The total magnetic field varied essentially in the 2 to 6.5 nT range with Bz also variable in the +-6nT range. Geomagnetic conditions were quiet to unsettled (local K Dourbes 2-3 and NOAA Kp 1-3). Similar solar wind conditions as well as geomagnetic conditions (quiet to unsettled) are expected to continue over the next days.

Today's estimated international sunspot number (ISN): 051, based on 21 stations.

Solar indices for 24 Jul 2014

Wolf number Catania	076
10cm solar flux	104
AK Chambon La Forêt	014
AK Wingst	008
Estimated Ap	007
Estimated international sunspot number	049 - 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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