Viewing archive of Tuesday, 22 July 2014

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2014 Jul 22 1230 UTC

SIDC Forecast

Solar flares

Quiet conditions (<50% probability of C-class flares)

Geomagnetism

Quiet (A<20 and K<4)

Solar protons

Quiet

	10cm flux	Ap
22 Jul 2014	093	007
23 Jul 2014	096	007
24 Jul 2014	099	007

Bulletin

Solar activity has been very low over the past 24 hours. Background X-ray flux was around the B2 level, with an occasional B flare (the strongest peaking at B5.9 level at 18:48 UT). Catania sunspot group 20 (NOAA AR 2019) showed no significant growth that would require increasing it's C flaring probability, while the new sunspot group 22 (NOAA unnumbered) does raise the full disc C flare potential. We nevertheless presently maintain the all quiet alert. No significant CME's were observed. Solar wind values became slightly enhanced around UT midnight, fluctuating since then in the 300-360 km/s range. The onset of that period was accompanied by a local maximum of the total magnetic field of over 8 nT, but it has declined continuously since then to around 4 nT presently. Bz was variable within that range. Geomagnetic conditions were quiet with local K Dourbes and NOAA Kp in the 1-2 range. Nominal solar wind conditions and associated quiet geomagnetic conditions are expected over the next days.

Today's estimated international sunspot number (ISN): 030, based on 15 stations.

Solar indices for 21 Jul 2014

Wolf number Catania	///
10cm solar flux	090
AK Chambon La Forêt	012
AK Wingst	006
Estimated Ap	005
Estimated international sunspot number	013 - Based on 25 stations

Noticeable events summary

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

All times in UTC

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