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SIDC Weekly Bulletin

:Issued: 2011 Oct 04 1454 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 561 from 2011 Sep 26  SOLAR ACTIVITY————–The week started with a moderate activity due to 2 M flares from active region NOAA1302 (Catania#82) on Sept.26. This F active region, which featured a naked-eye sunspot, was the dominant one early in the week. …

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SIDC Weekly Bulletin

:Issued: 2011 Sep 26 1515 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 560 from 2011 Sep 19  SOLAR ACTIVITY——– The past week featured strong solar activity with continuous flaring at C-class level, 19 M-flares and 2 X-flares. During the course of the the week, the GOES X-ray background level increased from B to high …

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SIDC Weekly Bulletin

:Issued: 2011 Sep 20 2157 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 559 from 2011 Sep 12  SOLAR ACTIVITY————– Seventeen sunspot groups were reported by Catania during the week, namely (with NOAA AR numbers shown in brackets): 59 (1287), 61, 68 and 69 (together constituting the NOAA AR 1289), 62 (1290), 64 (1288), 65 …

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SIDC Weekly Bulletin

:Issued: 2011 Sep 15 1122 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 558 from 2011 Sep 05  SOLAR ACTIVITY==========Solar activity was high during the past week. NOAA AR 11286 produced two M flares on September 5: an M1.6 peaking at 04:28 UT and an M1.2peaking at 07:58 UT. The active region was at that …

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SIDC Weekly Bulletin

:Issued: 2011 Sep 05 1319 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 557 from 2011 Aug 29  SOLAR ACTIVITY==========Solar activity was low to moderate during the past week. Most of the week was indeed low interms of flaring activity, with only minor Cflares until Sept. 4th, when a M3.2 flare occurred at 1145 UT …

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SIDC Weekly Bulletin

:Issued: 2011 Aug 30 1340 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 556 from 2011 Aug 22  SOLAR ACTIVITY==========Solar activity was low during the full week, with NOAA ARs 1271 and 1272producing only small C-class flares. GEOMAGNETIC ACTIVITY===============Geomagnetic conditions were quiet during this week, with unsettled periods on August 23 due to the arrival …

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SIDC Weekly Bulletin

:Issued: 2011 Jun 27 2203 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 547 from 2011 Jun 20  SOLAR ACTIVITY————–Solar activity was rather low during the week, with a moderate flaringactivity. A remarkable long duration event occurred on June 21st in NOAAAR 1236 near the central meridian. Peaking at 03:25 UT on that day, theC7.7 …

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SIDC Weekly Bulletin

:Issued: 2011 Jun 20 1621 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 546 from 2011 Jun 13  SOLAR ACTIVITY————–Solar activity was low over the whole week, with only a few C flares and one M1.3 flare on June 14.The GOES X-ray flux remained at B level. The main active regions on the solar disk …

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SIDC Weekly Bulletin

:Issued: 2011 Jun 14 1338 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 545 from 2011 Jun 06  SOLAR ACTIVITY————-The week was dominated by the activity exerted by duo AR11226 and AR11227 in the southern hemisphere. On June 07, a prominence between the two active regions became unstable. It erupted in a spectacular way: plasma …

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SIDC Weekly Bulletin

#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 543 from 2011 May 23  SOLAR ACTIVITY————– Solar activity was rather low in the beginning of the week, with the background solar X-ray level marginally at B-level. Two C-class flares occurred late on May 25: the first one (peaking at 21h03) was a C1.1 flare, the second one a C1.4 …

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SIDC Weekly Bulletin

:Issued: 2011 May 23 1621 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 542 from 2011 May 16  SOLAR ACTIVITY————– Six sunspot groups were observed on the Sun during the week: NOAA ARs 1208, 1214, 1216, 1217, 1218 (Catania numbers 79, 87, 89, 88, 90, respectively) and 1219 (no Catania number attributed due to a …

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SIDC Weekly Bulletin

:Issued: 2011 May 17 1628 UTC:Product: documentation at http://www.sidc.be/products/bul#——————————————————————–## SIDC Weekly bulletin on Solar and Geomagnetic activity            ##——————————————————————–#WEEK 541 from 2011 May 09  SOLAR ACTIVITY————-Solar activity was rather low during the week, with only C-class flares. The strongest one was a C5.4 flare, occurring on May 9th at 2059 UT (peak time). It was associated with an active region, at that …

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