Solar activity continues to decline as noticed by the sunspot and SID data. It's also pretty easy to see from the graph below of smoothed sunspot numbers covering the past six years. Thanks again to all our contributing observers. Please send more photos and drawings as I'd like to include them in the bulletin.

Michael Hill, SID Analyst 114 Prospect St Marlborough, MA 01752 USA noatak@aol.com

The events listed above meet at least one of the following criteria

1. Event reported by two or more observers within +/- 5 minutes
2. Event matched to GOES-8 XRA event to within +/- 15 minutes and event time < 1000 UT
3. Reported by observer with a high quality rating > 8 (scale 1-10)

Solar Flare Summary Based on GOES-12 Data

Sunspot Data

American Relative Sunspot Numbers(Ra) for September 2006 [boldface = maximum, minimum] Day N Raw Mean Ra 1 35 27 19 2 32 16 10 3 37 0 0 4 38 2 1 5 40 22 15 6 33 38 28 7 40 45 32 8 40 43 31 9 38 43 31 10 43 44 32 11 39 35 25 12 25 27 19 13 28 26 19 14 27 15 10 15 38 14 10 16 33 16 11 17 34 17 12 18 34 11 8 19 32 11 8 20 39 12 9 21 30 13 9 22 29 17 12 23 29 12 8 24 29 12 8 25 31 5 3 26 30 3 2 27 29 4 3 28 30 19 13 29 33 36 25 30 32 38 27 Means 33.6 20.7 14.7 Total No. of Observers: 61 Total No. of Observations: 1007

September 2006 Sunspot Observers AAP A. Abbott 14 AJV J. Alonso 10 ARAG G. Araujo 27 ARE R. Allessi 1 BARH H. Barnes 7 BEB R. Berg 21 BERJ J. Berdejo 12 BLAJ J. Blackwell 1 BMF M. Boschat 18 BRAB B. Branchett 28 BRAM M. Bradbury 4 BRAR R. Branch 30 BROB R. Brown 30 BYG Y. Brovarets 32 CAMP P. Campbell 4 CHAG G. Morales 29 CKB B. Cudnik 25 CLZ L. Corp 8 COMT T. Compton 8 CVJ J. Carvajal 7 DEJV J. van Delft 23 DGP G. Dyck 11 DUBF F. Dubois 28 FERJ J. Fernandez 20 FLET T. Fleming 25 FUJK K. Fujimori 18 GFT F. Gobet 18 HALB B. Halls 12 HAYK K. Hay 4 JENS S. Jenner 6 KAPJ J. Kaplan 22 KNJS J. & S. Knight 28 KROL L. Krozel 2 KUZM M. Kuzmin 1 LARJ J. Larriba 9 LERM M. Lerman 10 MARE E. Mariani 10 MARJ J. Maranon 29 MCE E. Mochizuki 18 MCHL L. McHenry 3 MEU E. Mason 3 MMI M. Moeller 18 OATS S. Oatney 19 RICE E. Richardson 17 RITA A. Ritchie 17 SCGL G. Schott 26 SIMC C. Simpson 12 STAB B. States 28 STEM G. Stemmler 25 STQ N. Stoikidis 23 SUZM M. Suzuki 24 SZUM M. Szulc 28 TESD D. Teske 29 TJV J. Temprano 14 URBP P. Urbanski 22 VARG A. Vargas 23 VIDD D. Vidican 9 WILD D. Williams 1 WILW W. Wilson 28 WRP R. Wheeler 5 YESH H. Yesilyaprak 23

Reporting addresses: Sunspot Reports Email: solar@aavso.org Postal Mail: AAVSO, 25 Birch St. Cambridge, MA, 02138 Fax: 617-354-0665 SID Flare Reports Email: noatak@aol.com Postal Mail: Mike Hill, 114 Prospect St., Marlboro, MA, 01752

Click image to enlarge. 10 cm Solar Flux and American Relative Sunspot Numbers (Ra) for September 2006 (10cm Source: http://www.drao.nrc.ca/icarus)