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 | 3 | 3 | 4 | 6 | 7 | 17 | 8 | 19 | 25 | 31 | 18 | 14 | 16 | 15 | 13 | 8 | 20 | 20 | 17 | 14 | 6 | 7 | 16 | 7 |
| ABG | 7 | 10 | 5 | 16 | 6 | 22 | 13 | 13 | 15 | 8 | 9 | 13 | 13 | 11 | 7 | 12 | 16 | 26 | 21 | 8 | 6 | 9 | 10 | 8 |
| ABK | 230 | 120 | 101 | 136 | 85 | 87 | 42 | 20 | 32 | 38 | 50 | 74 | 48 | 71 | 78 | 62 | 94 | 340 | 73 | 128 | 121 | 65 | 164 | 63 |
| AIA | 8 | 12 | 23 | 16 | 8 | 12 | 21 | 21 | 15 | 22 | 9 | 15 | 8 | 4 | 21 | 12 | 16 | 20 | 18 | 14 | 6 | 5 | 18 | 7 |
| AMS | 9 | 6 | 9 | 14 | 9 | 9 | 9 | 20 | 11 | 7 | 9 | 7 | 4 | 7 | 8 | 7 | 7 | 49 | 27 | 6 | 5 | 7 | 6 | 6 |
| API | 4 | 8 | 6 | 9 | 10 | 8 | 7 | 3 | 10 | 15 | 24 | 6 | 4 | 7 | 4 | 6 | 20 | 11 | 5 | 5 | 6 | 8 | 6 | 9 |
| AQU | 4 | 6 | 4 | 9 | 5 | 5 | 14 | 10 | 8 | 7 | 12 | 11 | 11 | 7 | 8 | 7 | 11 | 27 | 18 | 13 | 7 | 7 | 12 | 9 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 3 | 4 | 15 | 3 | 4 | 6 | 5 | 10 | 8 | 6 | 16 | 4 | 4 | 13 | 18 | 18 | 16 | 5 | 11 | 4 | 3 | 13 | 4 |
| ASP | 2 | 6 | 3 | 12 | 10 | 9 | 9 | 17 | 4 | 13 | 20 | 10 | 5 | 10 | 11 | 16 | 24 | 22 | 21 | 10 | 3 | 10 | 8 | 5 |
| BDV | 9 | 7 | 6 | 8 | 6 | 5 | 14 | 16 | 7 | 11 | 13 | 9 | 14 | 5 | 14 | 16 | 14 | 37 | 25 | 14 | 10 | 10 | 15 | 10 |
| BEL | 16 | 8 | 7 | 8 | 9 | 9 | 17 | 13 | 7 | 11 | 13 | 13 | 13 | 13 | 23 | 25 | 25 | 50 | 33 | 16 | 13 | 14 | 22 | 14 |
| BFE | 19 | 9 | 9 | 10 | 14 | 15 | 21 | 16 | 15 | 14 | 20 | 15 | 15 | 20 | 35 | 35 | 30 | 70 | 39 | 18 | 17 | 16 | 23 | 16 |
| BFO | ||||||||||||||||||||||||
| BLC | 48 | 37 | 26 | 90 | 90 | 83 | 44 | 42 | 133 | 86 | 57 | 66 | 168 | 146 | 166 | 96 | 198 | 351 | 167 | 156 | 108 | 124 | 73 | 53 |
| BMT | 7 | 5 | 3 | 8 | 8 | 24 | 17 | 11 | 9 | 15 | 11 | 9 | 9 | 7 | 14 | 14 | 12 | 26 | 25 | 14 | 5 | 9 | 3 | 13 |
| BNG | 1 | 4 | 3 | 10 | 9 | 4 | 12 | 11 | 14 | 13 | 11 | 4 | 9 | 13 | 11 | 8 | 20 | 11 | 13 | 13 | 5 | 5 | 16 | 5 |
| BOU | 14 | 12 | 8 | 18 | 27 | 13 | 22 | 27 | 24 | 14 | 14 | 14 | 8 | 7 | 19 | 21 | 37 | 31 | 25 | 26 | 14 | 14 | 12 | 11 |
| BOX | 14 | 8 | 7 | 19 | 13 | 14 | 21 | 17 | 17 | 24 | 18 | 25 | 17 | 21 | 40 | 35 | 32 | 48 | 42 | 17 | 18 | 15 | 25 | 19 |
| BRW | 59 | 72 | 89 | 117 | 141 | 183 | 114 | 118 | 136 | 133 | 418 | 266 | 127 | 139 | 119 | 95 | 785 | 461 | 642 | 261 | 96 | 168 | 76 | 107 |
| BSL | 10 | 10 | 12 | 17 | 22 | 11 | 21 | 25 | 16 | 15 | 12 | 12 | 6 | 13 | 12 | 7 | 11 | 24 | 14 | 22 | 12 | 13 | 14 | 9 |
| CBB | 35 | 40 | 49 | 44 | 46 | 46 | 36 | 30 | 43 | 61 | 29 | 59 | 73 | 63 | 99 | 71 | 73 | 522 | 578 | 332 | 186 | 107 | 207 | 67 |
| CLF | 4 | 9 | 4 | 11 | 6 | 6 | 14 | 14 | 8 | 7 | 9 | 9 | 12 | 5 | 10 | 11 | 11 | 35 | 25 | 14 | 9 | 8 | 12 | 9 |
| CMO | 40 | 65 | 59 | 74 | 105 | 111 | 82 | 131 | 162 | 354 | 251 | 215 | 145 | 106 | 162 | 171 | 362 | 226 | 111 | 67 | 26 | 40 | 49 | 54 |
| CNB | 5 | 3 | 7 | 13 | 10 | 16 | 10 | 17 | 7 | 16 | 32 | 23 | 7 | 10 | 16 | 17 | 38 | 45 | 15 | 17 | 5 | 5 | 8 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 5 | 3 | 14 | 12 | 10 | 10 | 13 | 6 | 16 | 26 | 14 | 5 | 10 | 11 | 15 | 29 | 25 | 17 | 11 | 5 | 11 | 5 | 4 |
| CZT | 11 | 3 | 5 | 22 | 5 | 25 | 11 | 26 | 17 | 7 | 6 | 5 | 7 | 9 | 6 | 7 | 17 | 48 | 27 | 11 | 8 | 14 | 23 | 4 |
| DLR | 10 | 8 | 10 | 16 | 24 | 13 | 21 | 26 | 18 | 16 | 15 | 15 | 8 | 7 | 17 | 13 | 9 | 21 | 10 | 23 | 11 | 10 | 11 | 9 |
| DOU | 4 | 11 | 5 | 11 | 7 | 8 | 15 | 16 | 7 | 8 | 11 | 8 | 17 | 9 | 16 | 16 | 14 | 44 | 30 | 15 | 11 | 10 | 15 | 10 |
| DRV | 15 | 38 | 45 | 75 | 26 | 64 | 41 | 21 | 30 | 41 | 63 | 26 | 31 | 24 | 28 | 25 | 104 | 93 | 112 | 60 | 75 | 47 | 29 | 75 |
| EBR | 3 | 8 | 5 | 13 | 12 | 12 | 13 | 11 | 12 | 5 | 6 | 18 | 9 | 9 | 14 | 8 | 9 | 24 | 21 | 25 | 10 | 8 | 12 | 8 |
| ESK | 5 | 15 | 7 | 15 | 14 | 10 | 19 | 18 | 12 | 10 | 23 | 13 | 21 | 23 | 35 | 32 | 41 | 78 | 52 | 22 | 20 | 17 | 20 | 13 |
| EUA | ||||||||||||||||||||||||
| EYR | 8 | 11 | 11 | 15 | 15 | 10 | 11 | 18 | 15 | 31 | 36 | 32 | 13 | 13 | 7 | 8 | 40 | 30 | 11 | 18 | 12 | 10 | 8 | 10 |
| FCC | 47 | 40 | 135 | 381 | 383 | 119 | 44 | 285 | 185 | 111 | 96 | 182 | 114 | 71 | 81 | 48 | 99 | 124 | 147 | 89 | 93 | 132 | 88 | 31 |
| FRD | 12 | 13 | 13 | 14 | 19 | 10 | 18 | 18 | 14 | 15 | 7 | 10 | 7 | 11 | 13 | 9 | 17 | 25 | 23 | 28 | 17 | 16 | 17 | 10 |
| FRN | 9 | 9 | 4 | 14 | 22 | 15 | 21 | 23 | 20 | 11 | 16 | 11 | 8 | 3 | 9 | 15 | 24 | 26 | 10 | 17 | 9 | 7 | 9 | 10 |
| FUR | 7 | 7 | 6 | 9 | 7 | 5 | 14 | 16 | 6 | 11 | 12 | 8 | 15 | 5 | 12 | 14 | 12 | 37 | 24 | 14 | 9 | 9 | 14 | 10 |
| GCK | ||||||||||||||||||||||||
| GDH | 32 | 44 | 21 | 24 | 41 | 84 | 64 | 44 | 84 | 97 | 88 | 88 | 173 | 83 | 64 | 162 | 134 | 200 | 143 | 135 | 41 | 38 | 97 | 21 |
| GNA | 5 | 6 | 3 | 19 | 14 | 4 | 8 | 10 | 4 | 11 | 11 | 8 | 6 | 7 | 8 | 14 | 16 | 25 | 24 | 7 | 3 | 6 | 7 | 8 |
| GUA | 7 | 8 | 8 | 16 | 18 | 6 | 9 | 7 | 9 | 9 | 18 | 8 | 5 | 8 | 6 | 11 | 17 | 11 | 10 | 6 | 4 | 6 | 14 | 15 |
| GUI | 4 | 6 | 3 | 15 | 4 | 9 | 10 | 3 | 11 | 5 | 14 | 17 | 3 | 5 | 11 | 10 | 19 | 18 | 11 | 11 | 5 | 4 | 10 | 4 |
| GZH | 3 | 6 | 5 | 7 | 6 | 12 | 8 | 11 | 12 | 13 | 7 | 6 | 5 | 7 | 7 | 10 | 7 | 19 | 17 | 7 | 4 | 7 | 6 | 6 |
| HAD | 5 | 12 | 6 | 14 | 9 | 8 | 15 | 15 | 10 | 5 | 12 | 8 | 13 | 11 | 16 | 17 | 22 | 47 | 32 | 16 | 12 | 12 | 12 | 11 |
| HBK | 6 | 5 | 6 | 7 | 10 | 8 | 11 | 6 | 8 | 14 | 9 | 6 | 13 | 7 | 5 | 5 | 22 | 13 | 14 | 14 | 4 | 6 | 18 | 4 |
| HER | 4 | 4 | 4 | 7 | 7 | 6 | 8 | 6 | 8 | 10 | 7 | 5 | 9 | 4 | 7 | 4 | 17 | 8 | 10 | 13 | 4 | 5 | 17 | 3 |
| HLP | 13 | 9 | 8 | 7 | 13 | 9 | 20 | 14 | 10 | 14 | 18 | 13 | 18 | 16 | 31 | 30 | 20 | 59 | 35 | 15 | 13 | 18 | 22 | 15 |
| HON | 9 | 7 | 4 | 10 | 9 | 9 | 10 | 4 | 9 | 13 | 22 | 6 | 6 | 6 | 3 | 5 | 20 | 13 | 15 | 6 | 6 | 6 | 5 | 9 |
| HRB | 9 | 6 | 5 | 7 | 7 | 5 | 16 | 14 | 7 | 12 | 13 | 10 | 14 | 5 | 14 | 16 | 15 | 37 | 25 | 14 | 10 | 10 | 16 | 11 |
| HRN | 55 | 37 | 58 | 40 | 127 | 209 | 158 | 38 | 79 | 70 | 124 | 93 | 120 | 71 | 102 | 39 | 106 | 410 | 167 | 103 | 74 | 56 | 175 | 61 |
| HUA | 7 | 7 | 12 | 19 | 16 | 8 | 15 | 21 | 8 | 14 | 11 | 19 | 19 | 48 | 62 | 36 | 36 | 119 | 95 | 31 | 23 | 21 | 11 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 60 | 114 | 26 | 101 | 241 | 256 | 49 | 68 | 163 | 121 | 130 | 116 | 154 | 99 | 59 | 75 | 192 | 303 | 281 | 122 | 93 | 42 | 113 | 32 |
| IRT | 9 | 15 | 11 | 13 | 8 | 32 | 21 | 14 | 13 | 18 | 11 | 16 | 17 | 11 | 18 | 17 | 19 | 38 | 32 | 18 | 6 | 12 | 8 | 14 |
| IZN | ||||||||||||||||||||||||
| KAK | 5 | 3 | 3 | 7 | 4 | 12 | 10 | 12 | 8 | 9 | 14 | 8 | 7 | 6 | 9 | 12 | 16 | 20 | 12 | 9 | 3 | 7 | 3 | 3 |
| KDU | 5 | 4 | 3 | 10 | 10 | 6 | 12 | 15 | 8 | 12 | 18 | 8 | 4 | 9 | 8 | 13 | 18 | 16 | 17 | 6 | 3 | 12 | 10 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 3 | 5 | 2 | 6 | 5 | 15 | 9 | 13 | 13 | 11 | 13 | 8 | 7 | 8 | 10 | 12 | 14 | 18 | 15 | 9 | 3 | 6 | 3 | 3 |
| KOU | 7 | 5 | 8 | 16 | 7 | 9 | 8 | 9 | 4 | 8 | 11 | 20 | 13 | 11 | 7 | 7 | 8 | 24 | 21 | 6 | 6 | 5 | 6 | 5 |
| LER | 12 | 12 | 5 | 17 | 20 | 29 | 19 | 16 | 23 | 5 | 21 | 12 | 17 | 33 | 41 | 33 | 58 | 67 | 43 | 16 | 20 | 11 | 17 | 12 |
| LRM | 7 | 5 | 4 | 11 | 13 | 7 | 10 | 13 | 8 | 12 | 13 | 8 | 7 | 9 | 9 | 14 | 16 | 31 | 26 | 8 | 4 | 7 | 9 | 10 |
| LVV | 12 | 6 | 6 | 5 | 9 | 7 | 15 | 14 | 9 | 12 | 13 | 9 | 12 | 9 | 15 | 18 | 14 | 41 | 25 | 13 | 10 | 11 | 18 | 12 |
| LYC | ||||||||||||||||||||||||
| LZH | 9 | 9 | 3 | 6 | 7 | 22 | 16 | 7 | 8 | 13 | 11 | 8 | 7 | 7 | 12 | 12 | 9 | 29 | 26 | 12 | 6 | 10 | 7 | 10 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 5 | 4 | 13 | 4 | 6 | 8 | 6 | 17 | 10 | 12 | 16 | 6 | 6 | 9 | 10 | 19 | 22 | 14 | 9 | 6 | 4 | 12 | 5 |
| MCQ | 22 | 25 | 29 | 42 | 15 | 62 | 36 | 95 | 129 | 164 | 260 | 275 | 101 | 60 | 160 | 258 | 225 | 190 | 150 | 39 | 19 | 25 | 22 | 38 |
| MEA | 23 | 33 | 19 | 21 | 39 | 27 | 24 | 79 | 124 | 64 | 71 | 62 | 40 | 26 | 31 | 35 | 78 | 78 | 38 | 35 | 36 | 48 | 34 | 34 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 6 | 4 | 6 | 7 | 6 | 13 | 17 | 18 | 6 | 14 | 15 | 12 | 10 | 7 | 13 | 15 | 19 | 30 | 14 | 13 | 8 | 9 | 3 | 8 |
| NAQ | 87 | 122 | 68 | 380 | 152 | 318 | 83 | 83 | 63 | 95 | 64 | 43 | 48 | 28 | 41 | 35 | 132 | 257 | 112 | 107 | 43 | 42 | 140 | 47 |
| NCK | 7 | 6 | 5 | 7 | 6 | 4 | 14 | 13 | 7 | 11 | 12 | 8 | 14 | 5 | 13 | 14 | 13 | 34 | 22 | 12 | 10 | 9 | 14 | 10 |
| NEW | 14 | 20 | 7 | 20 | 26 | 20 | 25 | 26 | 30 | 7 | 11 | 21 | 8 | 9 | 17 | 24 | 46 | 55 | 27 | 18 | 22 | 23 | 22 | 21 |
| NGK | 13 | 9 | 8 | 9 | 11 | 9 | 17 | 13 | 8 | 13 | 14 | 10 | 14 | 10 | 23 | 24 | 19 | 54 | 34 | 16 | 13 | 13 | 21 | 13 |
| NUR | 23 | 6 | 6 | 21 | 14 | 20 | 23 | 20 | 23 | 20 | 19 | 27 | 16 | 27 | 43 | 38 | 32 | 47 | 37 | 14 | 15 | 16 | 24 | 17 |
| NVS | 6 | 7 | 14 | 21 | 13 | 18 | 16 | 11 | 13 | 19 | 9 | 22 | 15 | 8 | 18 | 14 | 17 | 37 | 22 | 14 | 8 | 12 | 8 | 11 |
| OTT | 17 | 18 | 14 | 14 | 23 | 13 | 14 | 11 | 19 | 8 | 11 | 13 | 13 | 18 | 29 | 15 | 22 | 38 | 34 | 39 | 27 | 31 | 29 | 14 |
| PAF | 16 | 15 | 7 | 30 | 12 | 20 | 12 | 22 | 14 | 12 | 16 | 8 | 8 | 11 | 16 | 15 | 16 | 71 | 45 | 13 | 15 | 20 | 19 | 10 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 9 | 8 | 10 | 7 | 16 | 9 | 14 | 16 | 12 | 10 | 7 | 7 | 9 | 8 | 12 | 7 | 27 | 23 | 9 | 5 | 9 | 8 | 6 |
| PPT | 7 | 4 | 5 | 6 | 14 | 9 | 9 | 8 | 12 | 11 | 20 | 6 | 4 | 4 | 4 | 4 | 17 | 11 | 7 | 8 | 5 | 6 | 4 | 7 |
| PST | ||||||||||||||||||||||||
| QSB | 6 | 6 | 5 | 6 | 9 | 5 | 13 | 6 | 16 | 8 | 10 | 9 | 9 | 15 | 11 | 7 | 17 | 34 | 23 | 14 | 11 | 12 | 16 | 11 |
| RES | 23 | 47 | 64 | 52 | 41 | 64 | 44 | 24 | 52 | 88 | 62 | 48 | 73 | 60 | 55 | 58 | 130 | 207 | 173 | 214 | 114 | 101 | 132 | 64 |
| SBA | 19 | 32 | 40 | 58 | 32 | 81 | 36 | 32 | 33 | 37 | 71 | 51 | 40 | 41 | 45 | 39 | 105 | 102 | 129 | 68 | 31 | 32 | 25 | 33 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 11 | 25 | 18 | 22 | 31 | 18 | 31 | 19 | 24 | 17 | 20 | 35 | 25 | 9 | 12 | 24 | 57 | 65 | 29 | 24 | 14 | 19 | 20 | 25 |
| SJG | 6 | 4 | 8 | 15 | 8 | 10 | 8 | 11 | 4 | 13 | 7 | 19 | 15 | 8 | 4 | 4 | 5 | 17 | 13 | 4 | 11 | 15 | 4 | 6 |
| SOD | 83 | 43 | 44 | 81 | 49 | 51 | 29 | 22 | 28 | 36 | 39 | 61 | 36 | 52 | 65 | 50 | 101 | 321 | 60 | 77 | 77 | 74 | 100 | 50 |
| SPT | 2 | 8 | 3 | 13 | 7 | 8 | 12 | 7 | 11 | 5 | 8 | 13 | 5 | 8 | 13 | 4 | 12 | 21 | 18 | 14 | 7 | 7 | 12 | 7 |
| STJ | 14 | 11 | 8 | 13 | 17 | 12 | 9 | 13 | 12 | 14 | 12 | 11 | 10 | 5 | 6 | 14 | 13 | 36 | 41 | 26 | 21 | 22 | 21 | 7 |
| SUA | 8 | 7 | 6 | 7 | 8 | 8 | 11 | 8 | 11 | 14 | 13 | 7 | 16 | 9 | 12 | 13 | 18 | 37 | 22 | 15 | 8 | 14 | 16 | 12 |
| TAM | 2 | 6 | 3 | 12 | 7 | 5 | 10 | 7 | 18 | 6 | 7 | 8 | 7 | 10 | 12 | 11 | 28 | 17 | 12 | 15 | 6 | 6 | 14 | 7 |
| TAN | 5 | 4 | 4 | 6 | 11 | 12 | 12 | 6 | 10 | 18 | 12 | 4 | 7 | 7 | 3 | 4 | 19 | 21 | 15 | 13 | 5 | 8 | 14 | 4 |
| TDC | ||||||||||||||||||||||||
| THL | 17 | 29 | 18 | 52 | 17 | 59 | 49 | 50 | 33 | 68 | 45 | 20 | 54 | 108 | 62 | 32 | 125 | 112 | 167 | 146 | 41 | 71 | 57 | 29 |
| THY | 8 | 7 | 6 | 8 | 7 | 5 | 16 | 13 | 8 | 10 | 14 | 9 | 16 | 6 | 13 | 14 | 14 | 38 | 24 | 14 | 11 | 10 | 16 | 11 |
| TRW | 7 | 6 | 13 | 18 | 9 | 11 | 14 | 17 | 9 | 17 | 5 | 15 | 10 | 2 | 9 | 11 | 12 | 17 | 7 | 15 | 0 | 6 | 12 | 8 |
| TSU | 2 | 5 | 4 | 12 | 9 | 9 | 11 | 3 | 6 | 13 | 11 | 6 | 16 | 11 | 8 | 5 | 18 | 10 | 12 | 15 | 5 | 6 | 18 | 4 |
| TUC | 9 | 8 | 8 | 15 | 23 | 14 | 22 | 25 | 20 | 14 | 16 | 13 | 9 | 4 | 14 | 14 | 18 | 25 | 10 | 22 | 10 | 6 | 9 | 8 |
| UPS | 20 | 5 | 6 | 17 | 14 | 20 | 20 | 19 | 21 | 13 | 17 | 22 | 15 | 27 | 38 | 32 | 33 | 48 | 32 | 12 | 11 | 16 | 22 | 13 |
| VAL | 4 | 12 | 5 | 12 | 7 | 8 | 15 | 15 | 9 | 4 | 12 | 7 | 10 | 12 | 17 | 15 | 26 | 44 | 29 | 16 | 14 | 11 | 10 | 8 |
| VIC | 11 | 16 | 6 | 18 | 26 | 19 | 24 | 20 | 27 | 11 | 11 | 14 | 10 | 5 | 11 | 20 | 34 | 44 | 23 | 12 | 13 | 15 | 17 | 18 |
| VSS | 6 | 4 | 8 | 18 | 3 | 9 | 8 | 7 | 7 | 9 | 7 | 18 | 6 | 8 | 10 | 15 | 16 | 27 | 12 | 13 | 5 | 3 | 13 | 5 |
| WNG | 18 | 11 | 9 | 11 | 15 | 10 | 19 | 16 | 10 | 10 | 18 | 12 | 15 | 15 | 30 | 32 | 24 | 70 | 44 | 18 | 13 | 17 | 25 | 14 |
| YKC | 42 | 57 | 68 | 175 | 279 | 238 | 81 | 386 | 336 | 63 | 124 | 271 | 70 | 88 | 131 | 54 | 248 | 219 | 100 | 112 | 82 | 103 | 67 | 40 |
- Date modified: