SIDC URSIGRAM 30718 SIDC SOLAR BULLETIN 18 Jul 2003, 1130UT SIDC FORECAST (valid from 1230UT, 18 Jul 2003 until 20 Jul 2003) SOLAR FLARES : Eruptive (C-class flares expected, probability >= 50%) GEOMAGNETISM : Active conditions expected (A>=20 or K=4) SOLAR PROTONS : Quiet PREDICTIONS FOR 18 Jul 2003 10CM FLUX: 142 / AP: 019 PREDICTIONS FOR 19 Jul 2003 10CM FLUX: 146 / AP: 022 PREDICTIONS FOR 20 Jul 2003 10CM FLUX: 151 / AP: 013 SOLAR INDICES FOR 17 Jul 2003 SUNSPOT INDEX : 149 10CM SOLAR FLUX : 139 AK CHAMBON LA FORET : 030 AK WINGST : 018 ESTIMATED AP : 023 NOTICEABLE EVENTS SUMMARY DAY BEGIN MAX END LOC XRAY OP 10CM TYPE Catania NOAA NOTE NONE END BT