Geomagnetic Activity Map - Hourly Ranges
Note: Empty cells of observatories (indicated in the leftmost column by their IAGA codes) indicate that there was insufficient data to calculate a hourly range.
| IAGA | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 | 9 | 10 | 11 | 12 | 13 | 14 | 15 | 16 | 17 | 18 | 19 | 20 | 21 | 22 | 23 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| AAA | ||||||||||||||||||||||||
| AAE | 2 | 2 | 2 | 1 | 5 | 8 | 8 | 9 | 7 | 2 | 6 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 3 | 2 | 1 | 1 | 2 | 1 |
| ABG | 8 | 7 | 11 | 11 | 8 | 10 | 7 | 7 | 9 | 7 | 5 | 3 | 6 | 7 | 5 | 7 | 3 | 6 | 5 | 3 | 5 | 3 | 4 | 5 |
| ABK | 134 | 109 | 66 | 75 | 34 | 61 | 32 | 14 | 12 | 17 | 20 | 16 | 29 | 46 | 34 | 29 | 46 | 39 | 343 | 31 | 67 | 53 | 171 | 60 |
| AIA | 2 | 4 | 21 | 10 | 6 | 16 | 11 | 15 | 12 | 4 | 6 | 7 | 4 | 4 | 11 | 6 | 9 | 3 | 7 | 4 | 3 | 4 | 8 | 3 |
| AMS | 4 | 4 | 4 | 5 | 4 | 11 | 6 | 5 | 6 | 5 | 4 | 6 | 6 | 9 | 6 | 9 | 7 | 6 | 15 | 6 | 4 | 4 | 10 | 7 |
| API | 2 | 3 | 2 | 2 | 2 | 4 | 2 | 5 | 2 | 3 | 1 | 2 | 1 | 1 | 2 | 2 | 3 | 1 | 2 | 2 | 3 | 2 | 2 | 3 |
| AQU | 2 | 2 | 2 | 1 | 2 | 3 | 3 | 8 | 2 | 7 | 6 | 6 | 3 | 6 | 3 | 7 | 3 | 1 | 4 | 1 | 1 | 1 | 2 | 3 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 4 | 2 | 1 | 1 | 2 | 4 | 3 | 1 | 1 | 1 | 0 | 2 |
| ASP | 2 | 7 | 2 | 4 | 2 | 3 | 10 | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 4 | 1 |
| BDV | 1 | 2 | 2 | 2 | 2 | 3 | 2 | 6 | 1 | 5 | 6 | 2 | 9 | 10 | 13 | 3 | 3 | 4 | 5 | 1 | 1 | 2 | 9 | 1 |
| BEL | 4 | 2 | 5 | 2 | 2 | 3 | 4 | 6 | 3 | 7 | 7 | 11 | 9 | 11 | 15 | 4 | 6 | 4 | 17 | 7 | 4 | 2 | 9 | 4 |
| BFE | 9 | 6 | 13 | 7 | 4 | 8 | 4 | 5 | 5 | 7 | 5 | 9 | 8 | 20 | 23 | 8 | 11 | 6 | 54 | 20 | 4 | 9 | 18 | 16 |
| BFO | ||||||||||||||||||||||||
| BLC | 47 | 77 | 292 | 244 | 74 | 276 | 240 | 36 | 177 | 75 | 78 | 46 | 84 | 125 | 124 | 243 | 148 | 90 | 258 | 93 | 109 | 149 | 214 | 76 |
| BMT | 0 | 5 | 12 | 7 | 1 | 5 | 9 | 6 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 3 | 2 | 3 |
| BNG | 2 | 1 | 2 | 2 | 2 | 7 | 4 | 4 | 4 | 4 | 8 | 2 | 2 | 2 | 1 | 2 | 6 | 3 | 2 | 3 | 2 | 1 | 3 | 1 |
| BOU | 5 | 4 | 5 | 4 | 1 | 16 | 11 | 11 | 6 | 4 | 3 | 3 | 2 | 2 | 3 | 8 | 5 | 2 | 3 | 3 | 2 | 6 | 12 | 2 |
| BOX | 14 | 4 | 8 | 2 | 2 | 4 | 2 | 4 | 3 | 5 | 5 | 4 | 8 | 13 | 17 | 3 | 6 | 7 | 32 | 12 | 5 | 5 | 21 | 9 |
| BRW | 24 | 23 | 142 | 118 | 55 | 246 | 104 | 180 | 184 | 101 | 137 | 242 | 106 | 99 | 229 | 145 | 157 | 240 | 80 | 65 | 64 | 30 | 50 | 39 |
| BSL | 4 | 5 | 7 | 4 | 6 | 3 | 6 | 6 | 6 | 2 | 3 | 5 | 9 | 7 | 6 | 5 | 5 | 3 | 4 | 4 | 4 | 9 | 4 | 5 |
| CBB | 40 | 36 | 133 | 73 | 13 | 165 | 204 | 85 | 62 | 56 | 27 | 35 | 25 | 96 | 68 | 72 | 135 | 139 | 357 | 170 | 178 | 85 | 124 | 64 |
| CLF | 1 | 3 | 2 | 3 | 1 | 3 | 3 | 6 | 5 | 4 | 3 | 4 | 4 | 11 | 14 | 9 | 5 | 3 | 4 | 2 | 1 | 2 | 6 | 2 |
| CMO | 35 | 23 | 72 | 47 | 32 | 218 | 145 | 299 | 189 | 13 | 173 | 61 | 79 | 54 | 85 | 71 | 80 | 77 | 59 | 20 | 16 | 33 | 41 | 29 |
| CNB | 4 | 4 | 6 | 7 | 3 | 14 | 10 | 20 | 11 | 4 | 4 | 4 | 4 | 8 | 7 | 6 | 9 | 6 | 2 | 7 | 2 | 5 | 5 | 2 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 4 | 2 | 6 | 5 | 5 | 5 | 1 | 3 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | 2 |
| CZT | 7 | 5 | 4 | 7 | 9 | 6 | 5 | 2 | 2 | 7 | 4 | 3 | 5 | 5 | 5 | 10 | 3 | 10 | 22 | 5 | 6 | 4 | 7 | 8 |
| DLR | 5 | 3 | 8 | 6 | 4 | 7 | 7 | 6 | 3 | 4 | 3 | 3 | 6 | 7 | 11 | 3 | 9 | 4 | 4 | 5 | 5 | 6 | 6 | 2 |
| DOU | 3 | 5 | 4 | 6 | 4 | 4 | 2 | 7 | 4 | 4 | 5 | 3 | 6 | 13 | 13 | 8 | 5 | 2 | 10 | 6 | 3 | 3 | 13 | 5 |
| DRV | 75 | 122 | 97 | 114 | 78 | 94 | 73 | 62 | 50 | 52 | 42 | 35 | 47 | 54 | 82 | 107 | 82 | 44 | 44 | 42 | 62 | 35 | 76 | 69 |
| EBR | 6 | 5 | 7 | 4 | 5 | 9 | 10 | 11 | 4 | 8 | 6 | 9 | 6 | 8 | 5 | 12 | 10 | 6 | 22 | 6 | 6 | 4 | 14 | 12 |
| ESK | 2 | 4 | 10 | 7 | 5 | 8 | 4 | 8 | 3 | 8 | 3 | 3 | 4 | 12 | 19 | 7 | 4 | 4 | 8 | 1 | 4 | 8 | 19 | 7 |
| EUA | ||||||||||||||||||||||||
| EYR | 6 | 3 | 5 | 9 | 3 | 14 | 3 | 10 | 6 | 4 | 4 | 5 | 4 | 9 | 8 | 8 | 5 | 5 | 4 | 4 | 3 | 2 | 4 | 3 |
| FCC | 118 | 126 | 402 | 199 | 161 | 377 | 186 | 178 | 223 | 67 | 100 | 132 | 73 | 46 | 46 | 49 | 36 | 63 | 52 | 35 | 41 | 41 | 63 | 51 |
| FRD | 3 | 2 | 7 | 3 | 4 | 7 | 5 | 1 | 3 | 2 | 1 | 2 | 3 | 3 | 2 | 3 | 5 | 3 | 5 | 3 | 5 | 7 | 2 | 3 |
| FRN | 4 | 3 | 3 | 4 | 2 | 3 | 3 | 5 | 1 | 2 | 2 | 1 | 2 | 2 | 6 | 7 | 5 | 2 | 3 | 4 | 2 | 8 | 10 | 10 |
| FUR | 1 | 1 | 2 | 2 | 1 | 3 | 2 | 7 | 4 | 4 | 6 | 2 | 7 | 9 | 13 | 5 | 3 | 3 | 3 | 1 | 1 | 2 | 7 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 89 | 112 | 183 | 138 | 103 | 104 | 123 | 126 | 125 | 173 | 194 | 99 | 116 | 81 | 111 | 136 | 137 | 82 | 70 | 51 | 83 | 50 | 196 | 95 |
| GNA | 8 | 7 | 5 | 17 | 11 | 21 | 16 | 32 | 12 | 9 | 14 | 5 | 12 | 19 | 13 | 9 | 17 | 18 | 11 | 16 | 7 | 8 | 11 | 10 |
| GUA | 3 | 3 | 3 | 2 | 3 | 4 | 3 | 4 | 3 | 4 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 4 |
| GUI | 2 | 2 | 2 | 3 | 2 | 4 | 3 | 3 | 3 | 7 | 11 | 4 | 2 | 6 | 2 | 3 | 5 | 2 | 4 | 2 | 3 | 3 | 2 | 1 |
| GZH | 4 | 6 | 7 | 4 | 2 | 2 | 2 | 9 | 4 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 3 | 1 | 3 |
| HAD | 2 | 4 | 7 | 3 | 4 | 4 | 3 | 3 | 7 | 8 | 3 | 3 | 4 | 14 | 18 | 12 | 5 | 3 | 21 | 3 | 7 | 6 | 10 | 7 |
| HBK | 3 | 5 | 4 | 7 | 4 | 8 | 6 | 6 | 7 | 7 | 4 | 5 | 5 | 4 | 7 | 3 | 5 | 6 | 6 | 4 | 5 | 4 | 6 | 3 |
| HER | 4 | 8 | 4 | 7 | 5 | 10 | 5 | 18 | 10 | 15 | 7 | 6 | 8 | 8 | 16 | 6 | 11 | 4 | 22 | 11 | 8 | 5 | 20 | 19 |
| HLP | 7 | 2 | 9 | 3 | 4 | 6 | 5 | 4 | 4 | 7 | 5 | 11 | 9 | 16 | 18 | 5 | 9 | 4 | 32 | 12 | 4 | 5 | 13 | 8 |
| HON | 4 | 6 | 6 | 3 | 2 | 6 | 3 | 5 | 2 | 1 | 2 | 1 | 1 | 2 | 1 | 3 | 4 | 3 | 8 | 6 | 6 | 7 | 3 | 9 |
| HRB | 2 | 1 | 2 | 1 | 1 | 2 | 3 | 7 | 1 | 5 | 7 | 5 | 8 | 10 | 13 | 4 | 3 | 5 | 7 | 1 | 2 | 1 | 7 | 1 |
| HRN | 38 | 34 | 58 | 64 | 124 | 148 | 134 | 116 | 93 | 61 | 132 | 76 | 173 | 141 | 77 | 92 | 28 | 129 | 235 | 160 | 47 | 32 | 232 | 268 |
| HUA | 3 | 1 | 2 | 2 | 1 | 6 | 2 | 4 | 3 | 2 | 1 | 2 | 7 | 6 | 3 | 4 | 3 | 1 | 4 | 9 | 6 | 2 | 2 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 108 | 107 | 199 | 196 | 122 | 77 | 85 | 84 | 115 | 95 | 86 | 125 | 63 | 62 | 65 | 149 | 142 | 102 | 259 | 119 | 48 | 69 | 393 | 131 |
| IRT | 2 | 5 | 7 | 3 | 3 | 2 | 9 | 3 | 4 | 12 | 4 | 3 | 4 | 5 | 1 | 3 | 3 | 1 | 5 | 2 | 2 | 7 | 6 | 4 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 3 | 5 | 5 | 11 | 9 | 4 | 8 | 6 | 3 | 3 | 6 | 4 | 6 | 2 | 7 | 4 | 5 | 4 | 5 | 5 | 6 | 6 | 4 |
| KDU | 8 | 10 | 6 | 3 | 4 | 2 | 2 | 8 | 3 | 3 | 2 | 2 | 2 | 3 | 1 | 2 | 3 | 3 | 1 | 3 | 2 | 2 | 3 | 4 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 15 | 4 | 5 | 11 | 9 | 3 | 10 | 3 | 4 | 3 | 5 | 4 | 3 | 1 | 5 | 3 | 4 | 3 | 2 | 1 | 5 | 7 | 8 |
| KOU | 3 | 3 | 4 | 3 | 5 | 5 | 5 | 2 | 4 | 2 | 6 | 12 | 7 | 7 | 8 | 7 | 7 | 2 | 4 | 3 | 9 | 2 | 3 | 4 |
| LER | 6 | 11 | 29 | 14 | 17 | 24 | 5 | 10 | 5 | 6 | 5 | 7 | 10 | 14 | 24 | 9 | 14 | 13 | 36 | 7 | 9 | 19 | 60 | 30 |
| LRM | 12 | 11 | 27 | 13 | 7 | 10 | 15 | 27 | 11 | 10 | 7 | 7 | 15 | 14 | 9 | 5 | 12 | 3 | 11 | 6 | 6 | 7 | 7 | 14 |
| LVV | 5 | 5 | 9 | 6 | 9 | 4 | 7 | 13 | 8 | 9 | 9 | 12 | 10 | 11 | 16 | 6 | 8 | 8 | 21 | 8 | 6 | 5 | 10 | 9 |
| LYC | ||||||||||||||||||||||||
| LZH | 1 | 9 | 6 | 3 | 2 | 3 | 4 | 6 | 3 | 5 | 3 | 2 | 2 | 3 | 1 | 1 | 2 | 2 | 1 | 2 | 1 | 3 | 2 | 2 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 2 | 2 | 2 | 3 | 3 | 5 | 3 | 7 | 15 | 3 | 13 | 6 | 6 | 7 | 4 | 11 | 4 | 7 | 7 | 2 | 2 | 5 | 3 |
| MCQ | 15 | 19 | 60 | 28 | 33 | 145 | 68 | 161 | 85 | 24 | 135 | 79 | 129 | 101 | 154 | 212 | 129 | 46 | 46 | 35 | 24 | 23 | 28 | 32 |
| MEA | 13 | 33 | 98 | 48 | 32 | 397 | 149 | 212 | 159 | 27 | 89 | 44 | 30 | 44 | 39 | 34 | 15 | 13 | 32 | 7 | 6 | 25 | 54 | 50 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 3 | 1 | 4 | 4 | 3 | 3 | 3 | 4 | 2 | 3 | 3 | 2 | 2 | 5 | 2 | 3 | 2 | 2 | 1 | 2 | 2 | 4 | 3 | 4 |
| NAQ | 122 | 58 | 207 | 239 | 122 | 171 | 288 | 112 | 138 | 66 | 28 | 37 | 15 | 53 | 31 | 65 | 82 | 38 | 163 | 84 | 94 | 194 | 201 | 181 |
| NCK | 1 | 1 | 2 | 2 | 1 | 2 | 1 | 7 | 1 | 5 | 7 | 4 | 5 | 11 | 10 | 4 | 3 | 4 | 4 | 1 | 1 | 1 | 7 | 1 |
| NEW | 4 | 7 | 14 | 7 | 1 | 51 | 22 | 35 | 22 | 9 | 12 | 7 | 2 | 6 | 12 | 2 | 5 | 3 | 4 | 6 | 2 | 7 | 16 | 4 |
| NGK | 3 | 4 | 4 | 5 | 3 | 5 | 5 | 4 | 4 | 5 | 5 | 4 | 11 | 13 | 13 | 5 | 9 | 6 | 17 | 7 | 3 | 3 | 17 | 6 |
| NUR | 21 | 10 | 16 | 7 | 6 | 11 | 5 | 6 | 6 | 4 | 5 | 9 | 14 | 17 | 28 | 13 | 7 | 12 | 63 | 17 | 4 | 10 | 46 | 25 |
| NVS | 5 | 6 | 5 | 4 | 5 | 12 | 4 | 6 | 7 | 7 | 8 | 5 | 8 | 9 | 4 | 5 | 5 | 7 | 6 | 4 | 4 | 8 | 6 | 6 |
| OTT | 6 | 7 | 33 | 7 | 14 | 37 | 30 | 21 | 14 | 6 | 5 | 5 | 3 | 6 | 6 | 5 | 8 | 3 | 10 | 9 | 8 | 10 | 8 | 8 |
| PAF | 4 | 10 | 5 | 8 | 3 | 11 | 9 | 4 | 4 | 6 | 5 | 4 | 6 | 9 | 6 | 14 | 4 | 9 | 26 | 6 | 7 | 8 | 18 | 18 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 8 | 9 | 4 | 2 | 7 | 7 | 8 | 6 | 2 | 3 | 2 | 4 | 3 | 2 | 4 | 3 | 4 | 3 | 3 | 2 | 3 | 5 | 3 |
| PPT | 3 | 6 | 8 | 3 | 2 | 9 | 2 | 4 | 1 | 1 | 2 | 2 | 3 | 4 | 2 | 3 | 3 | 3 | 4 | 4 | 5 | 3 | 6 | 3 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 1 | 3 | 1 | 3 | 4 | 5 | 7 | 4 | 3 | 8 | 7 | 2 | 3 | 7 | 2 | 3 | 2 | 6 | 3 | 2 | 1 | 6 | 4 |
| RES | 33 | 18 | 42 | 13 | 14 | 29 | 23 | 41 | 23 | 19 | 25 | 19 | 29 | 90 | 41 | 60 | 53 | 137 | 134 | 97 | 93 | 124 | 60 | 12 |
| SBA | 21 | 17 | 77 | 45 | 34 | 45 | 26 | 22 | 19 | 24 | 30 | 10 | 16 | 30 | 14 | 35 | 44 | 62 | 39 | 25 | 31 | 33 | 19 | 26 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 10 | 14 | 34 | 6 | 8 | 172 | 78 | 103 | 64 | 10 | 57 | 11 | 9 | 20 | 56 | 22 | 17 | 27 | 20 | 11 | 7 | 8 | 16 | 12 |
| SJG | 2 | 1 | 2 | 4 | 3 | 6 | 2 | 3 | 3 | 1 | 1 | 4 | 3 | 5 | 8 | 2 | 4 | 8 | 4 | 3 | 1 | 3 | 2 | 1 |
| SOD | 110 | 53 | 32 | 50 | 19 | 36 | 28 | 12 | 16 | 7 | 13 | 10 | 28 | 31 | 43 | 33 | 39 | 31 | 321 | 48 | 56 | 37 | 191 | 133 |
| SPT | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 4 | 2 | 7 | 4 | 1 | 2 | 4 | 3 | 6 | 4 | 3 | 7 | 4 | 1 | 2 | 2 | 3 |
| STJ | 16 | 18 | 29 | 26 | 14 | 20 | 18 | 35 | 11 | 18 | 18 | 19 | 16 | 13 | 9 | 19 | 8 | 10 | 15 | 13 | 19 | 17 | 30 | 6 |
| SUA | 1 | 2 | 2 | 5 | 3 | 5 | 3 | 8 | 7 | 3 | 4 | 6 | 5 | 6 | 12 | 4 | 4 | 3 | 4 | 2 | 2 | 2 | 5 | 2 |
| TAM | 1 | 0 | 1 | 1 | 2 | 4 | 6 | 7 | 6 | 4 | 3 | 2 | 2 | 7 | 6 | 4 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 1 |
| TAN | 1 | 1 | 1 | 2 | 3 | 4 | 5 | 1 | 2 | 3 | 2 | 2 | 4 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 0 | 1 | 2 | 1 |
| TDC | ||||||||||||||||||||||||
| THL | 21 | 22 | 27 | 17 | 16 | 30 | 16 | 27 | 47 | 37 | 55 | 83 | 67 | 114 | 68 | 48 | 93 | 55 | 62 | 21 | 28 | 24 | 55 | 20 |
| THY | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 7 | 3 | 4 | 8 | 4 | 7 | 11 | 10 | 4 | 3 | 4 | 6 | 1 | 1 | 1 | 7 | 1 |
| TRW | 1 | 1 | 2 | 2 | 3 | 5 | 1 | 2 | 3 | 1 | 1 | 1 | 1 | 6 | 5 | 3 | 2 | 10 | 6 | 2 | 2 | 1 | 4 | 2 |
| TSU | 2 | 2 | 1 | 2 | 2 | 4 | 4 | 3 | 8 | 7 | 2 | 2 | 2 | 5 | 8 | 6 | 3 | 2 | 5 | 1 | 3 | 1 | 5 | 4 |
| TUC | 2 | 2 | 3 | 1 | 1 | 3 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 3 | 10 | 8 | 2 | 2 | 1 | 1 | 8 | 10 | 5 | 2 |
| UPS | 14 | 6 | 17 | 8 | 5 | 12 | 6 | 3 | 4 | 2 | 3 | 5 | 13 | 19 | 24 | 7 | 8 | 9 | 47 | 18 | 4 | 9 | 45 | 23 |
| VAL | 3 | 6 | 13 | 4 | 10 | 10 | 8 | 9 | 12 | 9 | 5 | 7 | 6 | 11 | 24 | 14 | 5 | 3 | 40 | 9 | 12 | 10 | 19 | 16 |
| VIC | 6 | 9 | 14 | 12 | 2 | 43 | 13 | 31 | 17 | 6 | 13 | 3 | 3 | 6 | 11 | 3 | 6 | 3 | 8 | 8 | 5 | 6 | 16 | 7 |
| VSS | 2 | 4 | 3 | 3 | 4 | 4 | 5 | 7 | 5 | 3 | 3 | 6 | 4 | 5 | 2 | 8 | 5 | 3 | 4 | 3 | 2 | 2 | 6 | 6 |
| WNG | 5 | 3 | 10 | 4 | 3 | 4 | 3 | 3 | 4 | 6 | 5 | 8 | 6 | 17 | 19 | 4 | 9 | 4 | 37 | 14 | 4 | 5 | 12 | 10 |
| YKC | 47 | 111 | 374 | 290 | 102 | 652 | 447 | 366 | 246 | 70 | 170 | 79 | 81 | 102 | 182 | 288 | 69 | 37 | 59 | 28 | 24 | 48 | 119 | 34 |
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