Viewing archive of Sunday, 23 June 2013

Daily bulletin on solar and geomagnetic activity from the SIDC

Issued: 2013 Jun 23 1206 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
23 Jun 2013	130	028
24 Jun 2013	125	019
25 Jun 2013	125	004

Bulletin

Flaring activity has been calm with 1 C-flare on June 22. C-flaring activity is possible for the coming day. A new active region, 1778 rotated over the east limb. It is located in the southern hemisphere. The solar wind speed is still relatively high with 600 km/s. The total magnetic field imbedded in the solar wind increased slightly to around 8 nT this morning at 4UT. The z-component was negative - between 0 and -5nT from yesterday June 22 afternoon until June 23, 4UT. From that moment, it fluctuated between negative and positive values. These negative values induced active conditions today, June 23. These solar wind conditions are probably linked with the coronal hole in the northern hemisphere. A wide coronal mass ejection was detected by CACTus on June 22, 14:12UT. The CME had an angular width of 160 degrees. No solar event on the solar disk facing the Earth could be linked to this eruption. It was seen as a halo CME by STEREO A. We conclude that the CME is back-sided.

Today's estimated international sunspot number (ISN): 086, based on 05 stations.

Solar indices for 22 Jun 2013

Wolf number Catania	///
10cm solar flux	130
AK Chambon La Forêt	025
AK Wingst	016
Estimated Ap	017
Estimated international sunspot number	092 - Based on 16 stations

Noticeable events summary

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

All times in UTC

<< Go to daily overview page