Finally some spots! Gema Araujo caught these wonderful solar images on December 13, 2007. The white light image shows active region 10978 at 10:34UT. The H-alpha images were taken at 11:20 and 11:34 UT respectively. The same day, the SID observers caught 3 events. More of Gema's images can be seen at http://www.astrosurf.com/obsolar/

Sudden Ionospheric Disturbance Report

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

Sudden Ionospheric Disturbances (SID)
Recorded During December 2007
(Analysis performed by Michael Hill, SID Analyst)

Date	Max	Imp
71213	952	-1
71213	1003	1
71218	1320	2

Importance rating: Duration

-1: <19

1: 19-25

1+: 26-32

2: 33-45

2+: 46-85

3: 86-125

3+: >125

Observer	Code	Station(s) monitored
P King	A80	FTA
M Hill	A87	NAA
J Wallace	A97	NAA
F Steyn	A102	NAA
L Loudet	A118	DHO

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

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

Solar Events

Greetings and Happy 2008. The end of 2007 brought us our first burst of activity in a long while and the beginning of 2008 a new solar cycle - cycle 24. This is good news for SID observers after a long time with little activity to get exited about. Not that there was a lot of activity but it's a start. There were 3 correlated SID events reported - all of them on two days, the 13th and the 18th. This of course corresponds to the burst of activity as seen on the GOES-12 satellite data as can be seen below. The GOES satellite did record quite a bit more activity than it has seen in the past as well. There were 124 X-Ray events and although most of them were B-Class events there were 12 C-Class events recorded.

Solar Flare Summary Based on GOES-12 Data

Solar Flare Summary

Sunspot Data

American Relative Sunspot Numbers(Ra) for December 2007
[boldface = maximum, minimum]

Day	N	Raw Mean	Ra
1	24	9	6
2	26	5	4
3	22	7	5
4	25	12	9
5	21	12	9
6	24	19	15
7	23	24	17
8	31	36	26
9	27	44	31
10	21	36	26
11	22	43	30
12	27	39	29
13	24	42	32
14	27	42	32
15	26	34	23
16	28	27	20
17	21	15	11
18	18	3	2
19	18	0	0
20	19	0	0
21	25	0	0
22	23	0	0
23	30	0	0
24	30	0	0
25	23	1	1
26	29	0	0
27	22	0	0
28	22	0	0
29	31	0	0
30	28	0	0
31	31	0	0
Means	25	14.5	10.6

Total No. of Observers: 55
Total No. of Observations: 768

December 2007 Sunspot Observers

AAP	A. Abbott	6
AJV	J. Alonso	8
ARAG	G. Araujo	27
BARH	H. Barnes	9
BATR	R. Battaiola	4
BEB	R. Berg	9
BERJ	J. Berdejo	14
BLAJ	J. Blackwell	1
BMF	M. Boschat	11
BRAB	B. Branchett	31
BRAD	D. Branchett	19
BRAR	R. Branch	27
BROB	R. Brown	25
BVC	A. Buck	31
CHAG	G. Morales	24
CKB	B. Cudnik	27
CLZ	L. Corp	16
CNT	D. Chantiles	7
CVJ	J. Carvajal	26
DEJV	J. van Delft	17
DGP	G. Dyck	8
DUBF	F. Dubois	19
FERJ	J. Fernandez	9
FLET	T. Fleming	22
FUJK	K. Fujimori	22
GFT	F. Gobet	6
HALB	B. Halls	6
HAYK	K. Hay	5
HMQ	M. Harris	19
KAPJ	J. Kaplan	7
KNJS	J. & S. Knight	13
KROL	L. Krozel	1
LARJ	J. Larriba	9
MARJ	J. Maranon	19
MCE	E. Mochizuki	20
MCHL	L. McHenry	1
MEU	E. Mason	10
MILJ	J. Miller	6
MMI	M. Moeller	10
OATS	S. Oatney	11
RICE	E. C. Richardson	9
RITA	A. Ritchie	5
SCGL	G. Schott	19
SIMC	C. Simpson	3
STEF	G. Stefanopoulis	6
STEM	G. Stemmler	13
STQ	N. Stoikidis	11
SUZM	M. Suzuki	25
SZUM	M. Szulc	9
TESD	D. Teske	22
TJV	J. Temprano	14
URBP	P. Urbanski	11
VARG	A. Vargas	15
VIDD	D. Vidican	5
WILW	W. Wilson	14
WRP	R. Wheeler	4
YESH	H. Yesilyaprak	21

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 June 2007 (Waldmeier method).

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