Gema Araujo took this H-alpha image on February 5, 2007 at 12:40 UT of active region 10940.

February continues with minimal solar activity. Our radio SID observers got blanked this month as well. Fortunately our sunspot observers faired slightly better, with most days showing some activity except for mid month.

We must commend all our observers for continually monitoring for any activity during this quiet part of the cycle. Reports, even with zero counts are just as important during this time, as all reports during the active part of the cycle. I look back into my old log books from several cycles ago and see the numerous reports of zero or minimal spot activity. It sure made for quick peeks at the sun, and took little if any time for drawings. Remember these easy times before we're once again peppered with spots at solar max.

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)

Note that as I did before when there were predominantly reports of "No SIDS", I have listed all the observers who reported in here and in the database file recorded on the web site. This is contrary to what I usually do which is only list observers that had correlated events. (I always record every observer in my database regardless of the nature of the report, however.)

Solar Flare Summary Based on GOES-12 Data

Sunspot Data

American Relative Sunspot Numbers(Ra) for February 2007 [boldface = maximum, minimum] Day N Raw Mean Ra 1 17 36 25 2 24 36 26 3 32 30 23 4 26 26 19 5 26 24 17 6 29 23 17 7 28 23 17 8 22 13 9 9 21 11 9 10 21 9 6 11 18 2 0 12 30 0 0 13 21 0 0 14 18 0 0 15 27 1 0 16 30 2 2 17 23 12 8 18 25 16 12 19 27 25 18 20 20 21 14 21 34 17 11 22 23 18 13 23 20 15 10 24 25 11 8 25 23 14 10 26 21 23 16 27 26 20 14 28 27 14 10 Means 24.4 15.8 11.2 Total No. of Observers: 48 Total No. of Observations: 684

February 2007 Sunspot Observers AAP A. Abbott 6 ARAG G. Araujo 24 BARH H. Barnes 14 BATR R. Battaiola 2 BERJ J. Berdejo 12 BLAJ J. Blackwell 5 BMF M. Boschat 18 BRAB B. Branchett 26 BRAD D. Branchett 12 BRAM M. Bradbury 10 BRAR R. Branch 20 BROB R. Brown 20 CHAG G. Morales 21 CKB B. Cudnik 20 CLZ L. Corp 8 DGP G. Dyck 14 DUBF F. Dubois 19 FERJ J. Fernandez 13 FLET T. Fleming 18 FUJK K. Fujimori 25 GFT F. Gobet 7 HALB B. Halls 1 HAYK K. Hay 14 KAPJ J. Kaplan 16 KNJS J. & S. Knight 20 KQR R. Kinne 10 KROL L. Krozel 3 LARJ J. Larriba 12 LERM M. Lerman 4 LEVM M. Leventhal 24 MCE E. Mochizuki 23 MCHL L. McHenry 2 MMI M. Moeller 18 OATS S. Oatney 14 OBSO IPS Observatory 17 PEKT R. Pektas 15 RICE E. C. Richardson 13 RITA A. Ritchie 23 SCGL G. Schott 20 SDP D. Sharples 2 SIMC C. Simpson 7 STQ N. Stoikidis 14 SUZM M. Suzuki 24 TESD D. Teske 23 TJV J. Temprano 9 URBP P. Urbanski 13

Reporting addresses: Sunspot Reports Email: solar@aavso.org Postal Mail: AAVSO, 49 Bay State Rd. Cambridge, MA, 02138 Fax: 617-354-0665 SID Flare Reports Email: noatak@aol.com Postal Mail: Mike Hill, 114 Prospect St., Marlboro, MA, 01752

Smoothed Mean Sunspot Numbers (Rsm) from January 2000 to August 2006 (Waldmeier method).

10 cm Solar Flux and American Relative Sunspot Numbers (Ra) for February 2007 (10cm Source: http://www.drao.nrc.ca/icarus)