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 | 8 | 11 | 10 | 23 | 49 | 25 | 33 | 13 | 20 | 7 | 19 | 9 | 21 | 14 | 3 | 7 | 4 | 13 | 6 | 7 | 9 | 4 |
| ABG | 7 | 10 | 5 | 11 | 9 | 10 | 8 | 23 | 16 | 4 | 5 | 12 | 6 | 7 | 8 | 5 | 4 | 9 | 4 | 11 | 6 | 7 | 7 | 6 |
| ABK | 30 | 26 | 22 | 70 | 36 | 53 | 50 | 49 | 43 | 72 | 62 | 59 | 54 | 40 | 27 | 48 | 40 | 30 | 30 | 92 | 65 | 21 | 69 | 92 |
| AIA | 5 | 6 | 5 | 17 | 19 | 12 | 16 | 6 | 43 | 22 | 7 | 10 | 7 | 8 | 11 | 8 | 9 | 7 | 7 | 6 | 6 | 3 | 11 | 8 |
| AMS | 8 | 3 | 5 | 14 | 10 | 4 | 4 | 29 | 27 | 17 | 9 | 21 | 3 | 10 | 3 | 5 | 6 | 9 | 5 | 9 | 4 | 2 | 3 | 3 |
| API | 3 | 4 | 6 | 21 | 10 | 10 | 10 | 17 | 8 | 3 | 3 | 25 | 7 | 6 | 2 | 2 | 1 | 5 | 2 | 4 | 4 | 6 | 3 | 2 |
| AQU | 4 | 3 | 3 | 4 | 8 | 16 | 8 | 20 | 10 | 6 | 9 | 14 | 7 | 6 | 5 | 8 | 11 | 10 | 3 | 10 | 7 | 6 | 8 | 7 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 3 | 2 | 5 | 3 | 3 | 5 | 8 | 15 | 13 | 5 | 10 | 8 | 9 | 5 | 7 | 16 | 7 | 3 | 6 | 1 | 4 | 2 | 2 |
| ASP | 3 | 4 | 9 | 19 | 15 | 9 | 13 | 23 | 21 | 16 | 9 | 30 | 11 | 10 | 3 | 5 | 2 | 8 | 2 | 3 | 2 | 3 | 4 | 3 |
| BDV | 5 | 3 | 3 | 3 | 11 | 18 | 8 | 22 | 16 | 7 | 7 | 12 | 6 | 12 | 4 | 9 | 14 | 14 | 5 | 12 | 9 | 6 | 10 | 9 |
| BEL | 7 | 6 | 5 | 7 | 14 | 23 | 12 | 26 | 21 | 9 | 6 | 16 | 7 | 20 | 6 | 15 | 17 | 17 | 8 | 17 | 10 | 7 | 14 | 15 |
| BFE | 8 | 6 | 7 | 9 | 15 | 30 | 12 | 30 | 24 | 10 | 16 | 16 | 10 | 26 | 12 | 22 | 24 | 24 | 12 | 18 | 10 | 6 | 16 | 16 |
| BFO | ||||||||||||||||||||||||
| BLC | 35 | 51 | 24 | 58 | 464 | 290 | 202 | 36 | 492 | 244 | 135 | 37 | 91 | 89 | 72 | 142 | 55 | 108 | 65 | 49 | 42 | 70 | 71 | 31 |
| BMT | 8 | 4 | 7 | 13 | 10 | 14 | 14 | 28 | 23 | 11 | 11 | 26 | 7 | 13 | 6 | 5 | 3 | 7 | 5 | 7 | 5 | 3 | 3 | 2 |
| BNG | 4 | 4 | 3 | 4 | 7 | 5 | 8 | 9 | 18 | 3 | 5 | 8 | 6 | 4 | 8 | 12 | 3 | 4 | 4 | 11 | 4 | 7 | 5 | 4 |
| BOU | 11 | 7 | 5 | 19 | 11 | 14 | 11 | 17 | 12 | 10 | 13 | 6 | 8 | 11 | 15 | 22 | 6 | 9 | 14 | 17 | 8 | 6 | 8 | 7 |
| BOX | 9 | 8 | 8 | 10 | 16 | 23 | 14 | 29 | 31 | 32 | 18 | 24 | 17 | 28 | 9 | 18 | 20 | 17 | 7 | 18 | 11 | 9 | 14 | 11 |
| BRW | 60 | 52 | 74 | 243 | 71 | 179 | 220 | 147 | 452 | 279 | 227 | 243 | 222 | 42 | 63 | 88 | 99 | 54 | 93 | 51 | 58 | 73 | 56 | 40 |
| BSL | 6 | 6 | 5 | 13 | 9 | 16 | 10 | 17 | 16 | 13 | 11 | 6 | 9 | 16 | 6 | 4 | 12 | 15 | 6 | 14 | 5 | 11 | 12 | 7 |
| CBB | 19 | 33 | 39 | 45 | 115 | 117 | 36 | 41 | 181 | 100 | 46 | 39 | 33 | 111 | 53 | 118 | 161 | 201 | 75 | 52 | 45 | 105 | 105 | 98 |
| CLF | 4 | 4 | 3 | 6 | 11 | 15 | 7 | 21 | 13 | 7 | 8 | 11 | 7 | 10 | 4 | 9 | 12 | 14 | 5 | 8 | 6 | 7 | 6 | 7 |
| CMO | 45 | 32 | 35 | 115 | 61 | 141 | 126 | 238 | 386 | 168 | 150 | 296 | 262 | 83 | 66 | 68 | 81 | 33 | 40 | 19 | 21 | 21 | 32 | 31 |
| CNB | 6 | 6 | 12 | 17 | 14 | 11 | 22 | 22 | 21 | 12 | 15 | 37 | 18 | 9 | 3 | 4 | 3 | 7 | 2 | 3 | 3 | 5 | 12 | 9 |
| CSY | ||||||||||||||||||||||||
| CTA | 11 | 13 | 3 | 26 | 13 | 8 | 12 | 26 | 18 | 13 | 10 | 33 | 14 | 8 | 3 | 4 | 2 | 7 | 3 | 3 | 1 | 7 | 11 | 2 |
| CZT | 6 | 2 | 4 | 13 | 3 | 12 | 11 | 41 | 37 | 13 | 11 | 13 | 7 | 11 | 4 | 6 | 5 | 7 | 4 | 19 | 8 | 2 | 10 | 8 |
| DLR | 5 | 6 | 5 | 16 | 8 | 13 | 11 | 16 | 14 | 13 | 11 | 7 | 7 | 12 | 10 | 7 | 10 | 16 | 11 | 16 | 3 | 13 | 13 | 6 |
| DOU | 5 | 4 | 4 | 6 | 11 | 16 | 8 | 24 | 13 | 8 | 11 | 13 | 7 | 14 | 5 | 14 | 14 | 16 | 6 | 11 | 8 | 9 | 6 | 8 |
| DRV | 169 | 136 | 173 | 111 | 51 | 64 | 50 | 42 | 70 | 36 | 26 | 38 | 30 | 24 | 35 | 8 | 16 | 34 | 31 | 17 | 19 | 37 | 37 | 106 |
| EBR | 3 | 3 | 2 | 7 | 11 | 21 | 9 | 29 | 19 | 12 | 7 | 19 | 12 | 8 | 10 | 11 | 10 | 17 | 6 | 16 | 5 | 8 | 6 | 6 |
| ESK | 8 | 5 | 6 | 7 | 17 | 23 | 15 | 33 | 26 | 11 | 20 | 13 | 10 | 24 | 15 | 27 | 25 | 30 | 14 | 15 | 11 | 11 | 8 | 11 |
| EUA | ||||||||||||||||||||||||
| EYR | 10 | 13 | 15 | 16 | 10 | 18 | 22 | 21 | 34 | 12 | 12 | 39 | 21 | 7 | 4 | 4 | 5 | 8 | 4 | 8 | 9 | 10 | 10 | 5 |
| FCC | 47 | 35 | 48 | 63 | 482 | 226 | 112 | 109 | 388 | 296 | 174 | 189 | 77 | 92 | 17 | 66 | 28 | 55 | 45 | 28 | 45 | 43 | 42 | 66 |
| FRD | 6 | 7 | 5 | 7 | 10 | 22 | 7 | 12 | 20 | 10 | 7 | 12 | 8 | 17 | 4 | 5 | 15 | 16 | 12 | 15 | 8 | 12 | 15 | 6 |
| FRN | 6 | 7 | 4 | 19 | 9 | 10 | 12 | 14 | 12 | 9 | 10 | 8 | 5 | 5 | 6 | 16 | 4 | 6 | 4 | 12 | 4 | 6 | 5 | 4 |
| FUR | 5 | 3 | 4 | 3 | 11 | 18 | 7 | 22 | 15 | 7 | 7 | 12 | 6 | 11 | 4 | 9 | 13 | 14 | 5 | 11 | 7 | 7 | 10 | 8 |
| GCK | ||||||||||||||||||||||||
| GDH | 52 | 31 | 22 | 76 | 80 | 102 | 94 | 166 | 605 | 287 | 148 | 105 | 89 | 121 | 61 | 90 | 95 | 88 | 57 | 30 | 29 | 37 | 60 | 31 |
| GNA | 3 | 10 | 4 | 22 | 10 | 5 | 13 | 10 | 18 | 17 | 7 | 22 | 6 | 9 | 3 | 4 | 2 | 7 | 3 | 3 | 2 | 3 | 3 | 5 |
| GUA | 18 | 7 | 8 | 26 | 26 | 20 | 4 | 31 | 17 | 4 | 6 | 27 | 7 | 8 | 1 | 2 | 3 | 5 | 2 | 5 | 6 | 8 | 13 | 20 |
| GUI | 3 | 3 | 2 | 8 | 5 | 3 | 6 | 8 | 16 | 5 | 11 | 15 | 10 | 5 | 8 | 9 | 9 | 4 | 9 | 3 | 3 | 5 | 4 | 3 |
| GZH | 4 | 8 | 9 | 14 | 11 | 6 | 3 | 25 | 18 | 5 | 6 | 21 | 5 | 8 | 2 | 3 | 2 | 6 | 4 | 6 | 3 | 2 | 2 | 2 |
| HAD | 5 | 5 | 3 | 7 | 14 | 16 | 10 | 23 | 18 | 9 | 13 | 9 | 6 | 18 | 7 | 14 | 16 | 20 | 9 | 9 | 5 | 7 | 5 | 7 |
| HBK | 7 | 4 | 4 | 4 | 5 | 11 | 6 | 16 | 7 | 11 | 7 | 4 | 10 | 5 | 5 | 8 | 7 | 4 | 4 | 11 | 4 | 3 | 9 | 6 |
| HER | 6 | 3 | 4 | 3 | 4 | 10 | 7 | 15 | 6 | 10 | 3 | 4 | 14 | 6 | 3 | 7 | 6 | 3 | 4 | 9 | 2 | 3 | 7 | 5 |
| HLP | 8 | 5 | 6 | 6 | 18 | 24 | 12 | 27 | 24 | 12 | 14 | 19 | 9 | 20 | 12 | 18 | 17 | 20 | 9 | 17 | 8 | 8 | 15 | 13 |
| HON | 4 | 8 | 6 | 9 | 8 | 6 | 12 | 13 | 5 | 4 | 3 | 21 | 5 | 3 | 1 | 3 | 8 | 4 | 3 | 8 | 3 | 2 | 5 | 1 |
| HRB | 5 | 4 | 4 | 3 | 11 | 19 | 9 | 24 | 16 | 7 | 8 | 15 | 6 | 13 | 4 | 9 | 14 | 13 | 5 | 12 | 9 | 7 | 11 | 9 |
| HRN | 56 | 17 | 54 | 120 | 75 | 513 | 279 | 229 | 259 | 267 | 405 | 103 | 85 | 51 | 45 | 64 | 46 | 94 | 27 | 72 | 22 | 32 | 23 | 36 |
| HUA | 3 | 4 | 4 | 8 | 6 | 8 | 7 | 4 | 28 | 16 | 7 | 14 | 18 | 57 | 39 | 50 | 31 | 24 | 52 | 17 | 19 | 7 | 8 | 3 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 17 | 62 | 33 | 399 | 237 | 162 | 129 | 74 | 572 | 219 | 164 | 190 | 122 | 94 | 39 | 67 | 44 | 102 | 127 | 42 | 43 | 54 | 93 | 16 |
| IRT | 8 | 8 | 6 | 16 | 6 | 13 | 28 | 16 | 30 | 9 | 11 | 24 | 9 | 17 | 6 | 3 | 3 | 8 | 5 | 3 | 3 | 5 | 1 | 11 |
| IZN | ||||||||||||||||||||||||
| KAK | 3 | 2 | 7 | 10 | 8 | 4 | 4 | 27 | 23 | 5 | 8 | 26 | 6 | 9 | 2 | 3 | 3 | 4 | 3 | 6 | 1 | 2 | 6 | 3 |
| KDU | 10 | 7 | 3 | 23 | 14 | 10 | 8 | 25 | 19 | 13 | 6 | 29 | 9 | 8 | 2 | 4 | 2 | 7 | 2 | 4 | 1 | 3 | 2 | 3 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 3 | 5 | 10 | 11 | 6 | 5 | 28 | 25 | 5 | 8 | 26 | 6 | 10 | 3 | 3 | 3 | 4 | 3 | 6 | 1 | 3 | 5 | 5 |
| KOU | 2 | 3 | 3 | 3 | 6 | 9 | 3 | 4 | 20 | 16 | 5 | 11 | 17 | 20 | 8 | 6 | 12 | 10 | 16 | 10 | 4 | 5 | 4 | 2 |
| LER | 8 | 5 | 6 | 15 | 16 | 26 | 12 | 35 | 23 | 17 | 14 | 9 | 10 | 25 | 10 | 29 | 29 | 30 | 12 | 15 | 14 | 8 | 6 | 11 |
| LRM | 6 | 7 | 7 | 15 | 12 | 6 | 5 | 19 | 19 | 19 | 9 | 21 | 8 | 9 | 4 | 5 | 3 | 9 | 3 | 5 | 2 | 3 | 2 | 7 |
| LVV | 6 | 5 | 6 | 6 | 13 | 17 | 10 | 25 | 19 | 7 | 8 | 16 | 7 | 16 | 6 | 10 | 15 | 16 | 5 | 14 | 9 | 9 | 12 | 10 |
| LYC | ||||||||||||||||||||||||
| LZH | 6 | 4 | 7 | 17 | 9 | 10 | 16 | 22 | 20 | 12 | 8 | 23 | 6 | 13 | 4 | 4 | 3 | 9 | 5 | 8 | 6 | 3 | 5 | 2 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 2 | 2 | 6 | 4 | 3 | 8 | 11 | 21 | 10 | 13 | 15 | 8 | 9 | 6 | 14 | 12 | 5 | 10 | 3 | 3 | 7 | 3 | 3 |
| MCQ | 9 | 9 | 19 | 56 | 34 | 40 | 72 | 64 | 416 | 59 | 120 | 247 | 166 | 24 | 10 | 36 | 15 | 17 | 18 | 12 | 5 | 9 | 19 | 10 |
| MEA | 32 | 21 | 17 | 32 | 39 | 58 | 49 | 117 | 116 | 118 | 105 | 23 | 16 | 25 | 10 | 33 | 19 | 15 | 11 | 20 | 20 | 17 | 21 | 22 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 3 | 4 | 7 | 13 | 9 | 9 | 10 | 27 | 25 | 10 | 12 | 30 | 11 | 11 | 5 | 4 | 4 | 4 | 5 | 7 | 3 | 4 | 10 | 7 |
| NAQ | 50 | 64 | 62 | 299 | 111 | 204 | 345 | 310 | 264 | 218 | 133 | 46 | 27 | 38 | 32 | 78 | 43 | 60 | 56 | 47 | 44 | 21 | 47 | 59 |
| NCK | 5 | 3 | 4 | 3 | 10 | 17 | 8 | 21 | 14 | 5 | 8 | 13 | 6 | 11 | 4 | 8 | 12 | 12 | 4 | 11 | 8 | 6 | 9 | 8 |
| NEW | ||||||||||||||||||||||||
| NGK | 7 | 4 | 4 | 6 | 14 | 25 | 11 | 27 | 20 | 7 | 8 | 15 | 7 | 20 | 7 | 15 | 18 | 18 | 8 | 15 | 11 | 7 | 14 | 14 |
| NUR | 9 | 7 | 8 | 13 | 15 | 27 | 12 | 34 | 30 | 30 | 18 | 20 | 19 | 28 | 10 | 23 | 25 | 19 | 8 | 19 | 10 | 7 | 16 | 12 |
| NVS | 4 | 3 | 5 | 22 | 10 | 8 | 15 | 15 | 22 | 21 | 14 | 21 | 12 | 18 | 6 | 6 | 7 | 10 | 6 | 5 | 8 | 6 | 4 | 7 |
| OTT | 9 | 10 | 6 | 17 | 19 | 19 | 11 | 15 | 33 | 12 | 13 | 17 | 6 | 15 | 7 | 6 | 19 | 23 | 14 | 20 | 11 | 16 | 14 | 11 |
| PAF | 11 | 3 | 4 | 18 | 12 | 8 | 6 | 35 | 35 | 26 | 18 | 20 | 5 | 11 | 6 | 9 | 9 | 16 | 7 | 16 | 12 | 4 | 6 | 5 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 7 | 10 | 12 | 19 | 14 | 8 | 4 | 33 | 23 | 9 | 7 | 23 | 6 | 10 | 3 | 4 | 3 | 9 | 6 | 8 | 4 | 4 | 4 | 3 |
| PPT | 6 | 3 | 4 | 14 | 8 | 8 | 10 | 9 | 3 | 6 | 3 | 17 | 5 | 5 | 3 | 3 | 2 | 8 | 7 | 13 | 7 | 5 | 7 | 9 |
| PST | ||||||||||||||||||||||||
| QSB | 4 | 5 | 5 | 4 | 12 | 13 | 14 | 23 | 9 | 11 | 5 | 15 | 6 | 7 | 12 | 9 | 7 | 13 | 4 | 15 | 10 | 9 | 11 | 8 |
| RES | 34 | 25 | 30 | 75 | 61 | 35 | 85 | 53 | 109 | 64 | 81 | 68 | 68 | 79 | 49 | 60 | 130 | 184 | 161 | 131 | 202 | 46 | 32 | 99 |
| SBA | 66 | 34 | 32 | 52 | 66 | 40 | 97 | 38 | 107 | 68 | 30 | 57 | 41 | 16 | 13 | 52 | 14 | 44 | 73 | 35 | 41 | 17 | 27 | 48 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 25 | 11 | 12 | 34 | 25 | 30 | 17 | 32 | 81 | 49 | 31 | 20 | 26 | 16 | 8 | 12 | 14 | 17 | 13 | 5 | 10 | 8 | 12 | 13 |
| SJG | 3 | 3 | 2 | 4 | 5 | 8 | 4 | 7 | 16 | 10 | 6 | 6 | 7 | 7 | 4 | 4 | 6 | 6 | 5 | 6 | 8 | 9 | 3 | 2 |
| SOD | 22 | 16 | 17 | 46 | 27 | 35 | 39 | 42 | 37 | 61 | 54 | 31 | 46 | 34 | 20 | 38 | 32 | 16 | 18 | 58 | 40 | 13 | 36 | 50 |
| SPT | 3 | 3 | 3 | 8 | 9 | 11 | 8 | 16 | 11 | 14 | 6 | 10 | 12 | 5 | 7 | 8 | 8 | 10 | 4 | 7 | 4 | 7 | 5 | 5 |
| STJ | 4 | 7 | 4 | 19 | 14 | 32 | 13 | 6 | 24 | 14 | 11 | 29 | 9 | 13 | 5 | 13 | 17 | 27 | 14 | 10 | 6 | 12 | 11 | 6 |
| SUA | 6 | 9 | 16 | 5 | 10 | 6 | 10 | 7 | 12 | 5 | 13 | 6 | 8 | 12 | 9 | |||||||||
| TAM | 3 | 3 | 3 | 5 | 7 | 6 | 13 | 10 | 20 | 5 | 12 | 8 | 5 | 6 | 10 | 13 | 8 | 6 | 4 | 8 | 4 | 7 | 5 | 4 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 39 | 28 | 27 | 81 | 25 | 64 | 100 | 40 | 102 | 82 | 44 | 65 | 39 | 99 | 88 | 126 | 183 | 204 | 93 | 54 | 46 | 33 | 22 | 43 |
| THY | 5 | 4 | 5 | 3 | 11 | 19 | 9 | 24 | 15 | 6 | 9 | 15 | 6 | 11 | 6 | 9 | 13 | 13 | 5 | 12 | 9 | 7 | 10 | 9 |
| TRW | 4 | 3 | 4 | 6 | 10 | 10 | 8 | 7 | 28 | 22 | 5 | 4 | 8 | 9 | 11 | 11 | 5 | 8 | 4 | 5 | 5 | 3 | 6 | 4 |
| TSU | 4 | 4 | 5 | 5 | 11 | 4 | 14 | 11 | 15 | 9 | 5 | 7 | 6 | 8 | 6 | 9 | 3 | 4 | 12 | 3 | 5 | 7 | 5 | |
| TUC | 5 | 6 | 4 | 18 | 8 | 12 | 11 | 15 | 13 | 12 | 11 | 7 | 6 | 9 | 11 | 14 | 4 | 13 | 13 | 16 | 4 | 9 | 10 | 6 |
| UPS | 8 | 5 | 7 | 11 | 13 | 24 | 7 | 33 | 24 | 20 | 18 | 14 | 15 | 23 | 8 | 22 | 23 | 21 | 8 | 20 | 11 | 6 | 15 | 14 |
| VAL | 4 | 4 | 3 | 9 | 13 | 12 | 8 | 21 | 19 | 8 | 16 | 10 | 7 | 16 | 9 | 14 | 15 | 21 | 8 | 8 | 4 | 7 | 5 | 6 |
| VIC | 19 | 11 | 9 | 27 | 15 | 20 | 14 | 8 | 25 | 15 | 10 | 8 | 9 | 11 | 6 | 18 | 9 | 13 | 5 | 13 | 10 | 6 | 9 | 10 |
| VSS | 2 | 3 | 2 | 6 | 7 | 7 | 5 | 4 | 24 | 14 | 4 | 8 | 8 | 16 | 3 | 10 | 14 | 9 | 10 | 3 | 2 | 3 | 3 | 3 |
| WNG | ||||||||||||||||||||||||
| YKC | 59 | 19 | 41 | 76 | 153 | 326 | 77 | 175 | 403 | 272 | 189 | 55 | 90 | 85 | 60 | 88 | 50 | 63 | 38 | 33 | 36 | 40 | 45 | 49 |
- Date modified: