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 | 5 | 3 | 10 | 4 | 7 | 27 | 46 | 21 | 15 | 22 | 25 | 7 | 20 | 16 | 20 | 12 | 9 | 10 | 24 | 9 | 9 | 3 | 28 | 11 |
| ABG | 7 | 7 | 7 | 10 | 18 | 11 | 9 | 12 | 8 | 9 | 12 | 6 | 10 | 7 | 15 | 10 | 10 | 13 | 13 | 5 | 8 | 9 | 19 | 9 |
| ABK | 146 | 178 | 118 | 237 | 64 | 44 | 51 | 39 | 38 | 35 | 77 | 58 | 76 | 80 | 128 | 105 | 71 | 50 | 489 | 101 | 112 | 86 | 408 | 225 |
| AIA | 5 | 5 | 24 | 18 | 23 | 36 | 25 | 9 | 17 | 6 | 10 | 8 | 12 | 5 | 22 | 7 | 23 | 5 | 14 | 9 | 9 | 7 | 19 | 11 |
| AMS | 7 | 8 | 10 | 4 | 8 | 11 | 15 | 6 | 5 | 6 | 8 | 14 | 8 | 12 | 10 | 15 | 4 | 15 | 17 | 6 | 6 | 7 | 6 | 14 |
| API | 4 | 6 | 14 | 16 | 5 | 21 | 13 | 23 | 6 | 5 | 7 | 4 | 2 | 6 | 7 | 6 | 9 | 3 | 3 | 7 | 3 | 12 | 5 | 3 |
| AQU | 10 | 5 | 10 | 5 | 6 | 23 | 11 | 11 | 10 | 8 | 9 | 13 | 12 | 10 | 18 | 5 | 11 | 10 | 36 | 9 | 6 | 5 | 25 | 17 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 6 | 5 | 5 | 5 | 8 | 8 | 9 | 10 | 8 | 2 | 12 | 6 | 7 | 21 | 16 | 7 | 3 | 14 | 9 | 6 | 5 | 15 | 10 |
| ASP | 8 | 8 | 14 | 5 | 5 | 16 | 10 | 20 | 8 | 8 | 7 | 9 | 17 | 9 | 8 | 9 | 11 | 6 | 7 | 7 | 5 | 7 | 5 | 8 |
| BDV | 11 | 4 | 14 | 7 | 10 | 25 | 13 | 18 | 7 | 7 | 13 | 15 | 11 | 13 | 14 | 7 | 16 | 10 | 46 | 8 | 8 | 7 | 27 | 19 |
| BEL | 12 | 6 | 20 | 12 | 10 | 28 | 10 | 21 | 9 | 11 | 18 | 20 | 14 | 19 | 12 | 6 | 22 | 12 | 54 | 8 | 11 | 10 | 31 | 19 |
| BFE | 10 | 9 | 25 | 13 | 16 | 30 | 10 | 20 | 8 | 10 | 24 | 24 | 18 | 34 | 17 | 8 | 33 | 15 | 78 | 15 | 15 | 14 | 32 | 27 |
| BFO | ||||||||||||||||||||||||
| BLC | 70 | 52 | 338 | 147 | 72 | 184 | 304 | 55 | 68 | 67 | 57 | 40 | 65 | 180 | 117 | 147 | 153 | 134 | 142 | 99 | 87 | 184 | 130 | 61 |
| BMT | 16 | 7 | 7 | 11 | 16 | 13 | 10 | 14 | 6 | 10 | 15 | 13 | 14 | 11 | 4 | 16 | 7 | 11 | 11 | 7 | 4 | 4 | 4 | 5 |
| BNG | 6 | 5 | 4 | 5 | 6 | 11 | 18 | 5 | 16 | 10 | 13 | 2 | 14 | 16 | 23 | 9 | 8 | 7 | 22 | 12 | 9 | 4 | 27 | 14 |
| BOU | 18 | 8 | 26 | 30 | 11 | 35 | 25 | 19 | 9 | 8 | 6 | 5 | 9 | 11 | 20 | 5 | 29 | 7 | 11 | 9 | 10 | 21 | 18 | 6 |
| BOX | 10 | 14 | 17 | 15 | 11 | 25 | 11 | 24 | 12 | 20 | 31 | 35 | 30 | 46 | 25 | 25 | 24 | 16 | 55 | 10 | 10 | 16 | 20 | 18 |
| BRW | 57 | 100 | 159 | 107 | 121 | 454 | 197 | 592 | 303 | 60 | 449 | 586 | 154 | 95 | 327 | 371 | 484 | 165 | 311 | 126 | 97 | 66 | 52 | 88 |
| BSL | 7 | 5 | 21 | 17 | 16 | 32 | 10 | 12 | 6 | 8 | 7 | 4 | 8 | 9 | 5 | 10 | 18 | 8 | 9 | 11 | 11 | 11 | 15 | 5 |
| CBB | 48 | 30 | 75 | 111 | 29 | 87 | 97 | 39 | 39 | 41 | 34 | 28 | 54 | 54 | 91 | 151 | 213 | 171 | 227 | 189 | 256 | 98 | 46 | 59 |
| CLF | 9 | 8 | 11 | 4 | 10 | 25 | 17 | 20 | 8 | 7 | 13 | 17 | 11 | 9 | 17 | 9 | 15 | 11 | 45 | 12 | 9 | 8 | 25 | 21 |
| CMO | 71 | 103 | 171 | 64 | 87 | 549 | 120 | 326 | 271 | 81 | 288 | 141 | 172 | 174 | 324 | 281 | 152 | 73 | 48 | 35 | 30 | 19 | 44 | 54 |
| CNB | 8 | 8 | 19 | 11 | 15 | 18 | 11 | 36 | 15 | 12 | 6 | 9 | 11 | 6 | 10 | 8 | 18 | 4 | 7 | 11 | 8 | 4 | 16 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 8 | 7 | 17 | 11 | 5 | 10 | 13 | 23 | 9 | 9 | 5 | 7 | 12 | 3 | 8 | 6 | 13 | 4 | 6 | 8 | 4 | 5 | 10 | 4 |
| CZT | 7 | 8 | 14 | 6 | 18 | 5 | 8 | 5 | 7 | 3 | 11 | 13 | 5 | 13 | 12 | 12 | 12 | 13 | 44 | 9 | 12 | 8 | 12 | 12 |
| DLR | 8 | 4 | 21 | 21 | 14 | 37 | 16 | 15 | 9 | 8 | 5 | 5 | 8 | 7 | 8 | 6 | 17 | 7 | 9 | 9 | 7 | 7 | 17 | 5 |
| DOU | 10 | 7 | 13 | 4 | 12 | 28 | 17 | 23 | 10 | 8 | 16 | 16 | 14 | 14 | 16 | 11 | 20 | 14 | 52 | 14 | 10 | 8 | 26 | 24 |
| DRV | 55 | 47 | 100 | 80 | 43 | 79 | 36 | 37 | 37 | 29 | 14 | 28 | 37 | 21 | 53 | 44 | 63 | 39 | 22 | 43 | 43 | 40 | 48 | 42 |
| EBR | 8 | 7 | 9 | 6 | 13 | 24 | 16 | 16 | 11 | 16 | 10 | 15 | 5 | 15 | 24 | 14 | 18 | 17 | 36 | 11 | 11 | 8 | 25 | 20 |
| ESK | 9 | 8 | 19 | 6 | 20 | 36 | 26 | 23 | 12 | 12 | 21 | 20 | 17 | 33 | 17 | 16 | 42 | 20 | 78 | 13 | 19 | 13 | 36 | 33 |
| EUA | ||||||||||||||||||||||||
| EYR | 11 | 10 | 20 | 14 | 10 | 46 | 22 | 51 | 20 | 10 | 11 | 9 | 5 | 10 | 15 | 16 | 22 | 7 | 8 | 7 | 10 | 11 | 24 | 12 |
| FCC | 78 | 97 | 482 | 265 | 94 | 251 | 168 | 149 | 207 | 68 | 92 | 130 | 129 | 145 | 73 | 90 | 45 | 48 | 130 | 49 | 69 | 151 | 91 | 89 |
| FRD | 11 | 9 | 21 | 10 | 18 | 15 | 7 | 14 | 15 | 6 | 8 | 6 | 10 | 13 | 13 | 11 | 26 | 4 | 14 | 12 | 15 | 17 | 15 | 10 |
| FRN | 8 | 6 | 18 | 24 | 8 | 41 | 22 | 25 | 11 | 8 | 9 | 4 | 7 | 4 | 10 | 6 | 14 | 11 | 11 | 9 | 9 | 11 | 17 | 10 |
| FUR | 10 | 6 | 13 | 6 | 10 | 24 | 14 | 17 | 7 | 7 | 10 | 14 | 11 | 11 | 16 | 8 | 15 | 10 | 43 | 8 | 8 | 7 | 26 | 20 |
| GCK | ||||||||||||||||||||||||
| GDH | 114 | 107 | 49 | 75 | 61 | 57 | 60 | 66 | 73 | 101 | 159 | 54 | 96 | 115 | 145 | 225 | 164 | 83 | 205 | 85 | 40 | 51 | 301 | 67 |
| GNA | 7 | 11 | 27 | 9 | 12 | 14 | 11 | 18 | 9 | 7 | 8 | 9 | 20 | 16 | 9 | 12 | 9 | 9 | 10 | 8 | 5 | 5 | 4 | 12 |
| GUA | 10 | 7 | 19 | 17 | 9 | 7 | 11 | 16 | 5 | 6 | 4 | 7 | 8 | 4 | 5 | 7 | 8 | 3 | 5 | 5 | 3 | 9 | 11 | 19 |
| GUI | 5 | 8 | 4 | 7 | 7 | 17 | 13 | 16 | 15 | 11 | 5 | 14 | 4 | 5 | 20 | 9 | 4 | 6 | 12 | 16 | 7 | 7 | 17 | 14 |
| GZH | 4 | 8 | 5 | 4 | 10 | 7 | 6 | 8 | 4 | 11 | 10 | 8 | 10 | 6 | 3 | 12 | 4 | 8 | 5 | 4 | 2 | 3 | 6 | 3 |
| HAD | 9 | 7 | 13 | 4 | 14 | 27 | 21 | 23 | 9 | 6 | 15 | 13 | 10 | 16 | 15 | 12 | 23 | 15 | 52 | 12 | 12 | 11 | 26 | 24 |
| HBK | 4 | 6 | 5 | 4 | 9 | 13 | 8 | 8 | 2 | 4 | 15 | 3 | 12 | 7 | 10 | 4 | 11 | 8 | 25 | 10 | 10 | 4 | 27 | 12 |
| HER | 4 | 3 | 5 | 4 | 8 | 12 | 10 | 7 | 5 | 7 | 22 | 5 | 7 | 6 | 8 | 2 | 11 | 7 | 22 | 11 | 8 | 4 | 23 | 9 |
| HLP | 11 | 7 | 21 | 11 | 12 | 28 | 10 | 19 | 9 | 12 | 25 | 23 | 20 | 25 | 17 | 6 | 27 | 13 | 67 | 10 | 12 | 12 | 30 | 21 |
| HON | 6 | 6 | 10 | 12 | 5 | 26 | 15 | 26 | 8 | 5 | 7 | 3 | 2 | 6 | 6 | 8 | 3 | 5 | 4 | 5 | 4 | 3 | 12 | 4 |
| HRB | 11 | 5 | 14 | 8 | 8 | 25 | 12 | 15 | 6 | 9 | 13 | 14 | 11 | 12 | 15 | 6 | 15 | 10 | 44 | 7 | 8 | 7 | 28 | 18 |
| HRN | 28 | 67 | 57 | 62 | 128 | 157 | 276 | 182 | 102 | 83 | 87 | 88 | 75 | 33 | 212 | 63 | 62 | 64 | 204 | 217 | 44 | 35 | 235 | 226 |
| HUA | 5 | 6 | 16 | 8 | 19 | 28 | 9 | 8 | 12 | 4 | 5 | 10 | 17 | 57 | 29 | 23 | 56 | 16 | 24 | 28 | 27 | 9 | 9 | 8 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 109 | 197 | 302 | 145 | 94 | 156 | 175 | 66 | 81 | 208 | 98 | 105 | 136 | 119 | 52 | 141 | 74 | 144 | 99 | 97 | 62 | 49 | 372 | 129 |
| IRT | 10 | 25 | 28 | 8 | 18 | 16 | 29 | 25 | 11 | 11 | 21 | 17 | 13 | 19 | 7 | 17 | 10 | 16 | 22 | 13 | 4 | 3 | 6 | 5 |
| IZN | ||||||||||||||||||||||||
| KAK | 9 | 11 | 3 | 4 | 14 | 10 | 8 | 11 | 7 | 6 | 7 | 9 | 9 | 3 | 5 | 11 | 9 | 4 | 6 | 6 | 4 | 6 | 10 | 4 |
| KDU | 10 | 12 | 15 | 16 | 5 | 12 | 12 | 15 | 7 | 8 | 5 | 7 | 13 | 5 | 6 | 9 | 9 | 5 | 5 | 6 | 2 | 8 | 3 | 7 |
| KMH | ||||||||||||||||||||||||
| KNY | 8 | 16 | 5 | 4 | 8 | 9 | 9 | 11 | 7 | 7 | 7 | 9 | 10 | 4 | 4 | 11 | 8 | 6 | 7 | 6 | 3 | 6 | 5 | 5 |
| KOU | 4 | 6 | 10 | 2 | 14 | 9 | 4 | 10 | 11 | 6 | 4 | 14 | 12 | 15 | 10 | 8 | 7 | 11 | 7 | 16 | 6 | 5 | 6 | 7 |
| LER | 10 | 12 | 23 | 14 | 32 | 28 | 14 | 13 | 11 | 14 | 22 | 22 | 17 | 43 | 15 | 14 | 43 | 16 | 71 | 13 | 19 | 11 | 29 | 32 |
| LRM | 9 | 10 | 20 | 7 | 6 | 11 | 13 | 12 | 8 | 8 | 8 | 8 | 19 | 15 | 9 | 11 | 8 | 11 | 9 | 8 | 5 | 5 | 5 | 12 |
| LVV | 11 | 5 | 16 | 11 | 8 | 24 | 10 | 16 | 6 | 11 | 14 | 16 | 14 | 15 | 12 | 4 | 17 | 11 | 42 | 7 | 9 | 9 | 27 | 14 |
| LYC | ||||||||||||||||||||||||
| LZH | 15 | 5 | 9 | 8 | 16 | 11 | 8 | 11 | 5 | 9 | 15 | 9 | 13 | 10 | 4 | 15 | 5 | 12 | 8 | 5 | 4 | 4 | 9 | 5 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 7 | 5 | 6 | 8 | 13 | 10 | 10 | 19 | 23 | 8 | 9 | 13 | 10 | 16 | 9 | 6 | 7 | 9 | 10 | 6 | 5 | 17 | 12 |
| MCQ | 24 | 32 | 48 | 56 | 34 | 208 | 93 | 185 | 73 | 27 | 155 | 100 | 195 | 134 | 186 | 250 | 133 | 43 | 45 | 56 | 29 | 20 | 29 | 32 |
| MEA | 44 | 44 | 41 | 49 | 27 | 494 | 95 | 257 | 159 | 29 | 70 | 29 | 23 | 59 | 44 | 30 | 45 | 12 | 32 | 22 | 22 | 56 | 44 | 32 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 8 | 6 | 5 | 7 | 17 | 14 | 11 | 19 | 10 | 8 | 9 | 12 | 12 | 5 | 6 | 15 | 10 | 6 | 9 | 8 | 6 | 10 | 13 | 5 |
| NAQ | 130 | 147 | 320 | 212 | 92 | 140 | 128 | 250 | 136 | 62 | 39 | 32 | 29 | 46 | 28 | 133 | 89 | 50 | 164 | 80 | 105 | 64 | 269 | 95 |
| NCK | 10 | 5 | 13 | 7 | 8 | 24 | 12 | 14 | 6 | 8 | 12 | 14 | 11 | 12 | 15 | 6 | 14 | 10 | 40 | 7 | 7 | 6 | 24 | 17 |
| NEW | 27 | 21 | 25 | 42 | 13 | 56 | 30 | 35 | 16 | 10 | 10 | 7 | 10 | 15 | 17 | 7 | 22 | 14 | 14 | 14 | 15 | 31 | 18 | 15 |
| NGK | 11 | 6 | 20 | 10 | 14 | 27 | 12 | 20 | 10 | 8 | 20 | 18 | 13 | 18 | 12 | 7 | 25 | 12 | 60 | 7 | 12 | 9 | 31 | 23 |
| NUR | 10 | 18 | 24 | 22 | 14 | 25 | 11 | 21 | 11 | 14 | 32 | 35 | 28 | 51 | 29 | 19 | 32 | 13 | 73 | 16 | 12 | 21 | 21 | 25 |
| NVS | 7 | 12 | 21 | 11 | 6 | 12 | 24 | 16 | 10 | 16 | 20 | 21 | 10 | 19 | 7 | 25 | 8 | 15 | 21 | 11 | 7 | 6 | 6 | 10 |
| OTT | 19 | 9 | 30 | 25 | 15 | 22 | 21 | 31 | 27 | 8 | 11 | 7 | 13 | 20 | 16 | 17 | 34 | 10 | 21 | 17 | 25 | 32 | 22 | 19 |
| PAF | 20 | 17 | 28 | 7 | 18 | 9 | 19 | 11 | 7 | 9 | 11 | 19 | 15 | 23 | 17 | 25 | 11 | 19 | 75 | 9 | 12 | 18 | 31 | 39 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 7 | 11 | 8 | 5 | 15 | 10 | 5 | 9 | 4 | 12 | 13 | 9 | 12 | 9 | 3 | 15 | 4 | 10 | 5 | 4 | 4 | 4 | 9 | 3 |
| PPT | 3 | 6 | 5 | 11 | 6 | 28 | 16 | 21 | 5 | 4 | 8 | 3 | 2 | 6 | 5 | 7 | 4 | 2 | 3 | 6 | 4 | 4 | 14 | 3 |
| PST | ||||||||||||||||||||||||
| QSB | 10 | 6 | 12 | 5 | 5 | 22 | 19 | 8 | 24 | 12 | 15 | 5 | 13 | 17 | 22 | 9 | 15 | 14 | 35 | 8 | 9 | 6 | 31 | 17 |
| RES | 46 | 70 | 119 | 33 | 46 | 42 | 28 | 57 | 47 | 65 | 111 | 42 | 80 | 116 | 41 | 102 | 76 | 91 | 100 | 84 | 81 | 73 | 31 | 33 |
| SBA | 59 | 60 | 108 | 67 | 43 | 57 | 23 | 110 | 48 | 39 | 43 | 19 | 42 | 44 | 73 | 71 | 89 | 60 | 41 | 27 | 58 | 25 | 58 | 48 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 27 | 41 | 27 | 35 | 22 | 112 | 32 | 91 | 47 | 8 | 23 | 17 | 21 | 32 | 41 | 46 | 16 | 17 | 20 | 15 | 16 | 18 | 13 | 23 |
| SJG | 4 | 4 | 11 | 3 | 14 | 11 | 3 | 7 | 8 | 3 | 4 | 5 | 4 | 8 | 7 | 4 | 5 | 2 | 3 | 11 | 6 | 4 | 6 | 4 |
| SOD | 199 | 124 | 80 | 99 | 40 | 25 | 37 | 38 | 28 | 35 | 64 | 51 | 67 | 67 | 103 | 78 | 66 | 44 | 379 | 82 | 55 | 117 | 227 | 226 |
| SPT | 7 | 8 | 7 | 5 | 6 | 24 | 17 | 18 | 12 | 8 | 11 | 14 | 7 | 9 | 22 | 4 | 8 | 9 | 31 | 13 | 6 | 9 | 24 | 19 |
| STJ | 12 | 20 | 25 | 20 | 21 | 31 | 21 | 21 | 23 | 12 | 14 | 17 | 14 | 9 | 15 | 20 | 20 | 21 | 29 | 17 | 25 | 19 | 27 | 10 |
| SUA | 10 | 7 | 13 | 7 | 9 | 23 | 13 | 9 | 9 | 9 | 10 | 11 | 15 | 11 | 14 | 8 | 14 | 12 | 40 | 7 | 8 | 8 | 27 | 15 |
| TAM | 6 | 8 | 6 | 5 | 5 | 17 | 16 | 6 | 26 | 16 | 9 | 3 | 13 | 15 | 24 | 9 | 6 | 6 | 23 | 11 | 7 | 5 | 25 | 16 |
| TAN | 4 | 4 | 7 | 2 | 8 | 9 | 8 | 5 | 2 | 3 | 12 | 3 | 6 | 9 | 10 | 10 | 9 | 8 | 22 | 7 | 10 | 2 | 23 | 7 |
| TDC | ||||||||||||||||||||||||
| THL | 39 | 56 | 70 | 56 | 38 | 54 | 28 | 82 | 47 | 72 | 58 | 33 | 48 | 115 | 38 | 48 | 64 | 68 | 56 | 44 | 52 | 63 | 120 | 58 |
| THY | 11 | 6 | 14 | 8 | 8 | 26 | 13 | 15 | 6 | 10 | 12 | 14 | 12 | 12 | 17 | 7 | 15 | 11 | 45 | 7 | 8 | 7 | 27 | 18 |
| TRW | 4 | 5 | 15 | 5 | 17 | 25 | 7 | 9 | 13 | 4 | 5 | 5 | 7 | 5 | 12 | 7 | 12 | 3 | 7 | 8 | 5 | 4 | 10 | 8 |
| TSU | 5 | 6 | 5 | 5 | 7 | 12 | 11 | 12 | 3 | 5 | 16 | 3 | 6 | 10 | 14 | 4 | 12 | 7 | 23 | 11 | 10 | 4 | 28 | 15 |
| TUC | 9 | 6 | 21 | 23 | 11 | 38 | 20 | 21 | 10 | 8 | 7 | 5 | 7 | 7 | 14 | 8 | 18 | 6 | 10 | 10 | 6 | 6 | 18 | 8 |
| UPS | 9 | 9 | 25 | 16 | 13 | 25 | 5 | 16 | 8 | 9 | 27 | 29 | 22 | 44 | 23 | 10 | 36 | 11 | 78 | 14 | 11 | 18 | 22 | 18 |
| VAL | 7 | 7 | 11 | 4 | 14 | 29 | 22 | 21 | 9 | 5 | 16 | 12 | 10 | 15 | 10 | 12 | 22 | 16 | 46 | 15 | 11 | 11 | 24 | 23 |
| VIC | 20 | 19 | 18 | 38 | 9 | 43 | 27 | 33 | 11 | 9 | 9 | 6 | 10 | 10 | 14 | 8 | 15 | 12 | 17 | 11 | 14 | 24 | 15 | 14 |
| VSS | 3 | 7 | 11 | 4 | 14 | 9 | 5 | 12 | 12 | 5 | 4 | 10 | 7 | 8 | 12 | 9 | 11 | 7 | 6 | 8 | 7 | 5 | 14 | 10 |
| WNG | 11 | 7 | 24 | 12 | 17 | 29 | 12 | 20 | 8 | 9 | 21 | 21 | 16 | 26 | 15 | 7 | 32 | 14 | 79 | 15 | 15 | 12 | 36 | 29 |
| YKC | 59 | 104 | 114 | 206 | 102 | 533 | 203 | 392 | 226 | 77 | 160 | 103 | 105 | 170 | 236 | 94 | 249 | 113 | 124 | 45 | 60 | 134 | 192 | 103 |
- Date modified: