Sudden Ionospheric Disturbance Report -- December,2010 -- A102 F Steyn, Villiersdorp, South Afri - 19.8Khz (NWC) A121 R Howe, Fort Collins, CO - 25.2khz (NML) A122 F Adamson, Australia - 19.8Khz (NWC) A124 G Myers, Bothell, WA - 24.8kHZ (NLK) A125 S Oatney, Partridge, KS - 25.2khz (NML) 40 101201 0619 0648 0624 1+ 1WC20 A102 40 101202 0444 0533 0449 2+ 1WC20 A122 40 101203 0138 0225 0151 2+ 1WC20 A122 40 101204 0406 0427 0417 1 1WC20 A122 40 101204 2121 2125 2124 1- 1ML25 A125 40 101206 0701 0705 0701 1- 5WC20 A122 40 101206 0706 0718 0717 1- 5WC20 A122 40 101206 1502 1539 1520 2 2ML25 A125 40 101208 0120 0121 0120 1- 1WC20 A122 40 101208 0328 0341 0331 1- 1WC20 A122 40 101210 0104 0105 0104 1- 1WC20 A122 40 101212 2220 2223 2221 1- 2WC20 A122 40 101213 0713 0714 1713 1- 1WC20 A122 40 101214 0356 0357 0356 1- 1WC20 A122 40 101215 0016 0057 0024 2 3WC20 A122 40 101215 0214 0226 0216 1- 2WC20 A122 40 101215 0239 0304 0248 1+ 3WC20 A122 40 101215 0638 0730 0644 2+ 3WC20 A102 40 101215 1858 1925 1909 1+ 1ML25 A121 40 101220 0505 0520 0516 1- 1WC20 A122 40 101220 0714 0720 0716 1- 1WC20 A122 40 101220 0726 0736 0727 1- 1WC20 A122 40 101224 2356 2358 2356 1- 1WC20 A122 40 101225 0356 0358 0356 1- 1WC20 A122 40 101231 0423 0452 0428 1+ 1WC20 A102 40 101231 1927 1937 1932 1- 5LK25 A124 40 101231 1932 2019 1959 2+ 2ML25 A121 40 101231 2003 2101 2042 2+ 2ML25 A125 -- End Report --