SIDC URSIGRAM 30131 SIDC SOLAR BULLETIN 31 Jan 2003, 1200UT SIDC FORECAST (valid from 1230UT, 31 Jan 2003 until 02 Feb 2003) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEOMAGNETISM : Active conditions expected (A>=20 or K=4) SOLAR PROTONS : Quiet PREDICTIONS FOR 31 Jan 2003 10CM FLUX: 119 / AP: 019 PREDICTIONS FOR 01 Feb 2003 10CM FLUX: 120 / AP: 022 PREDICTIONS FOR 02 Feb 2003 10CM FLUX: 125 / AP: 022 COMMENT: Disturbed geomagnetic conditions are expected for the coming days. LASCO and EIT observed a full halo CME on 2003/01/30. The event was first observed in C2 at 09:39 UT. Meanwhile a large transequatorial coronal hole is approaching the center of the solas disc. SOLAR INDICES FOR 30 Jan 2003 SUNSPOT INDEX : 110 10CM SOLAR FLUX : /// AK CHAMBON LA FORET : 046 AK WINGST : 020 ESTIMATED AP : 025 NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM TYPE Catania NOAA NOTE NONE END BT