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 | 1 | 1 | 1 | 4 | 4 | 6 | 4 | 8 | 2 | 6 | 2 | 4 | 6 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 3 | 2 | 1 | 1 |
| ABG | 8 | 4 | 7 | 13 | 10 | 8 | 4 | 7 | 5 | 7 | 8 | 7 | 3 | 6 | 4 | 4 | 3 | 5 | 3 | 4 | 7 | 5 | 6 | 3 |
| ABK | 14 | 11 | 73 | 52 | 21 | 54 | 60 | 25 | 11 | 6 | 5 | 4 | 7 | 13 | 10 | 30 | 15 | 7 | 4 | 12 | 332 | 349 | 271 | 38 |
| AIA | 1 | 1 | 4 | 17 | 5 | 4 | 15 | 5 | 1 | 6 | 2 | 1 | 1 | 3 | 6 | 1 | 5 | 4 | 1 | 4 | 27 | 20 | 14 | 5 |
| AMS | 1 | 1 | 3 | 6 | 1 | 3 | 4 | 8 | 6 | 3 | 4 | 3 | 1 | 3 | 2 | 2 | 3 | 2 | 1 | 5 | 17 | 19 | 20 | 3 |
| API | 2 | 2 | 3 | 3 | 2 | 1 | 3 | 2 | 2 | 3 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 4 | 4 | 3 | 7 |
| AQU | 1 | 1 | 2 | 3 | 2 | 5 | 3 | 5 | 3 | 4 | 5 | 6 | 3 | 2 | 2 | 4 | 4 | 2 | 1 | 2 | 3 | 3 | 3 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 6 | 6 | 3 | 5 | 2 | 4 | 2 | 2 | 2 | 5 | 3 |
| ASP | 3 | 5 | 6 | 5 | 6 | 2 | 4 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 2 | 5 |
| BDV | 0 | 0 | 1 | 6 | 2 | 1 | 5 | 2 | 8 | 4 | 3 | 3 | 5 | 5 | 4 | 4 | 2 | 1 | 0 | 3 | 3 | 5 | 5 | 2 |
| BEL | 3 | 2 | 5 | 5 | 3 | 3 | 5 | 7 | 7 | 7 | 3 | 5 | 8 | 6 | 5 | 8 | 3 | 3 | 1 | 4 | 10 | 14 | 10 | 7 |
| BFE | 2 | 2 | 12 | 15 | 6 | 7 | 6 | 7 | 5 | 7 | 2 | 3 | 8 | 11 | 9 | 17 | 5 | 3 | 2 | 5 | 35 | 30 | 31 | 10 |
| BFO | ||||||||||||||||||||||||
| BLC | 14 | 35 | 154 | 595 | 426 | 96 | 30 | 37 | 62 | 66 | 29 | 15 | 50 | 66 | 52 | 72 | 49 | 25 | 24 | 103 | 88 | 126 | 166 | 61 |
| BMT | 2 | 4 | 11 | 6 | 2 | 8 | 9 | 8 | 3 | 1 | 4 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 |
| BNG | 1 | 1 | 2 | 1 | 3 | 3 | 7 | 10 | 4 | 1 | 2 | 3 | 6 | 7 | 1 | 2 | 4 | 1 | 0 | 2 | 3 | 2 | 3 | 1 |
| BOU | 4 | 4 | 4 | 7 | 4 | 2 | 3 | 3 | 4 | 2 | 1 | 1 | 2 | 2 | 1 | 13 | 13 | 5 | 3 | 5 | 4 | 9 | 4 | 1 |
| BOX | 3 | 1 | 2 | 11 | 3 | 1 | 1 | 2 | 2 | 4 | 3 | 2 | 4 | 3 | 3 | 5 | 2 | 1 | 1 | 1 | 40 | 42 | 56 | 23 |
| BRW | 4 | 11 | 28 | 115 | 46 | 36 | 69 | 62 | 47 | 107 | 22 | 26 | 30 | 7 | 14 | 30 | 29 | 37 | 9 | 26 | 51 | 95 | 133 | 62 |
| BSL | 1 | 2 | 7 | 10 | 3 | 3 | 8 | 4 | 4 | 2 | 1 | 2 | 2 | 10 | 12 | 3 | 7 | 2 | 1 | 3 | 15 | 19 | 11 | 8 |
| CBB | 36 | 52 | 61 | 155 | 142 | 48 | 41 | 33 | 30 | 16 | 16 | 37 | 74 | 32 | 59 | 106 | 55 | 104 | 40 | 280 | 120 | 123 | 188 | 108 |
| CLF | 1 | 1 | 1 | 5 | 2 | 2 | 4 | 2 | 3 | 3 | 7 | 9 | 2 | 10 | 5 | 3 | 2 | 2 | 2 | 4 | 6 | 2 | 1 | 1 |
| CMO | 4 | 8 | 24 | 44 | 31 | 41 | 69 | 35 | 54 | 68 | 16 | 8 | 3 | 8 | 12 | 12 | 22 | 25 | 9 | 18 | 49 | 42 | 87 | 17 |
| CNB | 2 | 1 | 6 | 8 | 7 | 3 | 9 | 5 | 3 | 4 | 1 | 0 | 0 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 25 | 11 | 20 | 10 |
| CSY | ||||||||||||||||||||||||
| CTA | 6 | 8 | 4 | 2 | 3 | 3 | 4 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 6 | 2 | 4 | 8 |
| CZT | 2 | 4 | 6 | 6 | 2 | 5 | 3 | 5 | 3 | 1 | 2 | 1 | 3 | 3 | 2 | 4 | 2 | 1 | 1 | 4 | 28 | 11 | 23 | 3 |
| DLR | 2 | 1 | 5 | 5 | 2 | 2 | 6 | 4 | 2 | 2 | 1 | 2 | 3 | 2 | 13 | 10 | 5 | 4 | 3 | 8 | 14 | 10 | 16 | 7 |
| DOU | 1 | 1 | 4 | 11 | 3 | 3 | 6 | 4 | 3 | 3 | 6 | 8 | 2 | 9 | 5 | 5 | 2 | 3 | 2 | 5 | 8 | 7 | 6 | 2 |
| DRV | 68 | 110 | 60 | 37 | 28 | 51 | 29 | 27 | 15 | 19 | 12 | 13 | 8 | 21 | 27 | 19 | 21 | 66 | 18 | 55 | 153 | 110 | 91 | 16 |
| EBR | 1 | 2 | 3 | 12 | 5 | 6 | 7 | 4 | 5 | 8 | 10 | 8 | 3 | 6 | 4 | 6 | 11 | 6 | 4 | 7 | 10 | 13 | 13 | 3 |
| ESK | 1 | 1 | 6 | 11 | 6 | 2 | 12 | 4 | 2 | 3 | 4 | 5 | 4 | 10 | 3 | 4 | 2 | 4 | 3 | 7 | 13 | 18 | 3 | 1 |
| EUA | ||||||||||||||||||||||||
| EYR | 3 | 2 | 6 | 3 | 6 | 4 | 7 | 5 | 3 | 5 | 2 | 2 | 1 | 2 | 3 | 3 | 2 | 3 | 2 | 2 | 12 | 10 | 11 | 3 |
| FCC | 9 | 13 | 313 | 475 | 241 | 136 | 84 | 95 | 176 | 44 | 16 | 7 | 11 | 15 | 14 | 14 | 11 | 15 | 9 | 39 | 260 | 86 | 218 | 39 |
| FRD | 1 | 0 | 5 | 2 | 2 | 4 | 3 | 3 | 2 | 2 | 2 | 0 | 3 | 3 | 3 | 4 | 3 | 1 | 3 | 7 | 17 | 14 | 18 | 6 |
| FRN | 1 | 4 | 4 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 13 | 8 | 7 | 6 | 8 | 6 | 9 | 4 |
| FUR | 0 | 0 | 1 | 5 | 1 | 1 | 5 | 2 | 8 | 4 | 5 | 4 | 3 | 6 | 5 | 4 | 2 | 1 | 1 | 3 | 3 | 4 | 4 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 47 | 14 | 221 | 193 | 66 | 127 | 176 | 98 | 69 | 119 | 30 | 43 | 53 | 74 | 100 | 86 | 82 | 27 | 54 | 179 | 96 | 50 | 89 | 52 |
| GNA | 3 | 5 | 6 | 9 | 4 | 5 | 3 | 18 | 8 | 4 | 1 | 2 | 2 | 3 | 3 | 5 | 5 | 3 | 4 | 11 | 54 | 32 | 31 | 13 |
| GUA | 6 | 8 | 5 | 2 | 3 | 3 | 2 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 4 | 4 | 6 | 5 | 5 |
| GUI | 1 | 1 | 4 | 4 | 2 | 1 | 3 | 1 | 3 | 5 | 4 | 4 | 4 | 4 | 4 | 2 | 2 | 2 | 3 | 2 | 6 | 7 | 8 | 8 |
| GZH | 0 | 4 | 12 | 5 | 2 | 6 | 7 | 6 | 4 | 1 | 3 | 1 | 0 | 1 | 1 | 1 | 2 | 1 | 0 | 2 | 2 | 2 | 2 | 0 |
| HAD | 1 | 1 | 5 | 7 | 5 | 2 | 8 | 4 | 4 | 3 | 8 | 9 | 3 | 9 | 6 | 5 | 2 | 3 | 4 | 8 | 14 | 11 | 5 | 2 |
| HBK | 2 | 3 | 5 | 6 | 9 | 6 | 4 | 4 | 4 | 4 | 3 | 6 | 5 | 4 | 5 | 4 | 4 | 3 | 3 | 6 | 3 | 5 | 8 | 5 |
| HER | 3 | 3 | 8 | 10 | 4 | 5 | 15 | 8 | 4 | 6 | 12 | 9 | 5 | 12 | 4 | 6 | 3 | 3 | 3 | 10 | 36 | 8 | 27 | 18 |
| HLP | 2 | 1 | 5 | 10 | 4 | 3 | 6 | 5 | 5 | 7 | 3 | 4 | 8 | 7 | 11 | 12 | 5 | 4 | 2 | 4 | 20 | 25 | 28 | 9 |
| HON | 4 | 1 | 2 | 4 | 2 | 3 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 9 | 4 | 6 | 16 | 16 | 4 | 8 | 10 |
| HRB | 0 | 1 | 1 | 4 | 2 | 3 | 2 | 2 | 7 | 9 | 3 | 2 | 5 | 7 | 3 | 4 | 1 | 1 | 1 | 3 | 4 | 5 | 5 | 3 |
| HRN | 42 | 37 | 56 | 260 | 53 | 42 | 166 | 121 | 95 | 32 | 12 | 15 | 29 | 25 | 25 | 60 | 29 | 49 | 40 | 46 | 351 | 250 | 117 | 132 |
| HUA | 1 | 0 | 2 | 3 | 1 | 2 | 4 | 2 | 2 | 2 | 1 | 1 | 4 | 3 | 3 | 6 | 5 | 4 | 5 | 4 | 9 | 4 | 6 | 1 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 18 | 32 | 170 | 274 | 101 | 142 | 158 | 74 | 64 | 113 | 37 | 13 | 37 | 39 | 36 | 60 | 37 | 34 | 30 | 219 | 91 | 47 | 51 | 77 |
| IRT | 3 | 7 | 7 | 3 | 4 | 3 | 6 | 4 | 4 | 5 | 3 | 3 | 5 | 1 | 5 | 4 | 2 | 2 | 2 | 3 | 11 | 6 | 6 | 9 |
| IZN | ||||||||||||||||||||||||
| KAK | 5 | 1 | 3 | 5 | 10 | 7 | 3 | 9 | 4 | 5 | 1 | 1 | 2 | 3 | 3 | 3 | 4 | 3 | 4 | 5 | 5 | 14 | 15 | 11 |
| KDU | 3 | 4 | 8 | 5 | 5 | 4 | 4 | 2 | 4 | 2 | 0 | 0 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 4 | 6 | 8 | 1 |
| KMH | ||||||||||||||||||||||||
| KNY | 6 | 10 | 13 | 5 | 6 | 12 | 10 | 3 | 2 | 3 | 1 | 1 | 1 | 2 | 3 | 3 | 4 | 2 | 2 | 6 | 6 | 9 | 9 | 5 |
| KOU | 1 | 2 | 5 | 5 | 2 | 2 | 3 | 2 | 4 | 4 | 8 | 6 | 2 | 6 | 8 | 11 | 7 | 3 | 7 | 9 | 20 | 7 | 15 | 8 |
| LER | 1 | 4 | 10 | 37 | 10 | 4 | 28 | 5 | 8 | 5 | 2 | 3 | 2 | 5 | 5 | 13 | 6 | 5 | 3 | 8 | 26 | 68 | 47 | 18 |
| LRM | 2 | 17 | 27 | 14 | 4 | 16 | 12 | 9 | 15 | 11 | 3 | 1 | 2 | 4 | 5 | 5 | 3 | 4 | 5 | 3 | 9 | 13 | 10 | 23 |
| LVV | 4 | 5 | 9 | 10 | 7 | 8 | 6 | 8 | 6 | 13 | 3 | 8 | 6 | 9 | 10 | 12 | 9 | 6 | 4 | 7 | 9 | 13 | 13 | 7 |
| LYC | ||||||||||||||||||||||||
| LZH | 1 | 7 | 9 | 4 | 1 | 4 | 7 | 8 | 7 | 2 | 3 | 3 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 3 | 3 | 4 | 3 | 5 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 1 | 2 | 6 | 2 | 1 | 3 | 10 | 3 | 7 | 12 | 11 | 3 | 8 | 11 | 9 | 4 | 2 | 4 | 1 | 4 | 2 | 8 | 3 |
| MCQ | 5 | 10 | 13 | 43 | 8 | 19 | 35 | 58 | 33 | 34 | 6 | 3 | 3 | 4 | 4 | 8 | 9 | 5 | 3 | 10 | 76 | 32 | 151 | 30 |
| MEA | 4 | 13 | 29 | 62 | 58 | 52 | 74 | 60 | 69 | 25 | 7 | 3 | 4 | 6 | 8 | 7 | 7 | 7 | 4 | 17 | 12 | 70 | 71 | 41 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 5 | 4 | 3 | 6 | 5 | 3 | 2 | 3 | 2 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 4 | 7 | 5 | 7 |
| NAQ | 16 | 9 | 212 | 140 | 153 | 233 | 91 | 159 | 75 | 29 | 9 | 10 | 11 | 12 | 17 | 42 | 18 | 18 | 16 | 79 | 331 | 151 | 145 | 74 |
| NCK | 0 | 1 | 2 | 5 | 2 | 2 | 2 | 2 | 7 | 9 | 2 | 1 | 4 | 5 | 3 | 3 | 1 | 1 | 1 | 2 | 2 | 3 | 5 | 2 |
| NEW | 3 | 7 | 7 | 7 | 6 | 5 | 10 | 8 | 6 | 4 | 2 | 1 | 1 | 1 | 1 | 3 | 1 | 9 | 6 | 3 | 5 | 15 | 6 | 5 |
| NGK | 1 | 1 | 2 | 11 | 1 | 3 | 6 | 6 | 4 | 5 | 6 | 4 | 7 | 7 | 4 | 8 | 2 | 2 | 2 | 5 | 8 | 11 | 7 | 5 |
| NUR | 3 | 2 | 9 | 20 | 7 | 7 | 5 | 5 | 3 | 3 | 1 | 3 | 8 | 3 | 8 | 9 | 4 | 3 | 1 | 3 | 62 | 92 | 103 | 33 |
| NVS | 3 | 5 | 5 | 6 | 6 | 5 | 6 | 5 | 4 | 7 | 5 | 6 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 3 | 23 | 7 | 16 | 11 |
| OTT | 2 | 1 | 15 | 8 | 9 | 18 | 14 | 15 | 8 | 6 | 1 | 2 | 2 | 4 | 6 | 10 | 5 | 5 | 3 | 19 | 12 | 35 | 37 | 20 |
| PAF | 1 | 1 | 6 | 5 | 3 | 4 | 4 | 5 | 2 | 2 | 1 | 2 | 1 | 3 | 2 | 3 | 2 | 2 | 1 | 2 | 35 | 63 | 28 | 48 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 3 | 3 | 13 | 7 | 2 | 10 | 10 | 5 | 6 | 4 | 4 | 2 | 1 | 2 | 2 | 2 | 4 | 3 | 1 | 6 | 10 | 8 | 4 | 7 |
| PPT | 2 | 5 | 5 | 5 | 1 | 4 | 4 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 3 | 3 | 6 | 2 | 7 | 11 | 7 | 3 | 3 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 1 | 2 | 2 | 3 | 2 | 6 | 9 | 4 | 1 | 5 | 6 | 1 | 3 | 2 | 3 | 2 | 2 | 1 | 4 | 4 | 4 | 5 | 2 |
| RES | 36 | 42 | 17 | 56 | 12 | 13 | 6 | 31 | 14 | 7 | 13 | 23 | 28 | 28 | 54 | 144 | 117 | 164 | 89 | 122 | 133 | 47 | 17 | 66 |
| SBA | 21 | 31 | 17 | 45 | 15 | 13 | 11 | 10 | 11 | 15 | 36 | 11 | 12 | 17 | 18 | 42 | 23 | 22 | 18 | 27 | 37 | 25 | 62 | 25 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 4 | 9 | 8 | 19 | 12 | 14 | 33 | 10 | 7 | 12 | 2 | 1 | 1 | 2 | 3 | 9 | 6 | 7 | 3 | 8 | 12 | 26 | 27 | 26 |
| SJG | 0 | 1 | 2 | 1 | 1 | 1 | 6 | 1 | 2 | 2 | 6 | 5 | 5 | 8 | 4 | 1 | 2 | 4 | 2 | 6 | 3 | 9 | 5 | 3 |
| SOD | 10 | 10 | 41 | 89 | 20 | 36 | 30 | 20 | 6 | 6 | 5 | 2 | 4 | 7 | 5 | 15 | 11 | 6 | 3 | 10 | 174 | 518 | 132 | 48 |
| SPT | 0 | 0 | 1 | 1 | 2 | 1 | 4 | 4 | 1 | 8 | 15 | 5 | 3 | 2 | 5 | 4 | 5 | 2 | 1 | 3 | 9 | 2 | 3 | 3 |
| STJ | 2 | 1 | 20 | 20 | 13 | 13 | 38 | 23 | 11 | 8 | 3 | 3 | 5 | 10 | 9 | 23 | 17 | 13 | 7 | 28 | 13 | 31 | 49 | 11 |
| SUA | 1 | 1 | 2 | 1 | 3 | 2 | 1 | 6 | 5 | 4 | 4 | 1 | 2 | 2 | 8 | 5 | 2 | 2 | 1 | 5 | 5 | 4 | 4 | 3 |
| TAM | 1 | 1 | 1 | 1 | 1 | 5 | 2 | 8 | 12 | 2 | 3 | 2 | 2 | 4 | 6 | 1 | 3 | 1 | 2 | 2 | 5 | 3 | 2 | 1 |
| TAN | 0 | 1 | 0 | 2 | 1 | 3 | 6 | 3 | 4 | 3 | 0 | 1 | 1 | 3 | 1 | 1 | 1 | 0 | 0 | 2 | 1 | 2 | 2 | 1 |
| TDC | ||||||||||||||||||||||||
| THL | 17 | 16 | 21 | 42 | 8 | 19 | 31 | 42 | 9 | 35 | 48 | 58 | 49 | 87 | 112 | 309 | 190 | 235 | 181 | 77 | 108 | 43 | 27 | 18 |
| THY | 0 | 0 | 1 | 3 | 2 | 4 | 1 | 1 | 7 | 9 | 3 | 1 | 5 | 5 | 4 | 4 | 1 | 1 | 1 | 3 | 3 | 4 | 4 | 2 |
| TRW | ||||||||||||||||||||||||
| TSU | 1 | 1 | 3 | 3 | 2 | 1 | 6 | 3 | 4 | 10 | 6 | 3 | 5 | 4 | 3 | 6 | 2 | 1 | 2 | 4 | 6 | 4 | 7 | 4 |
| TUC | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 2 | 3 | 10 | 6 | 4 | 5 | 3 | 5 | 2 | 6 | 6 |
| UPS | 2 | 2 | 7 | 24 | 5 | 6 | 9 | 2 | 2 | 2 | 1 | 1 | 5 | 6 | 6 | 4 | 2 | 1 | 1 | 3 | 44 | 72 | 87 | 23 |
| VAL | 1 | 2 | 14 | 12 | 9 | 5 | 9 | 8 | 6 | 4 | 8 | 10 | 4 | 7 | 9 | 3 | 2 | 4 | 5 | 11 | 38 | 21 | 14 | 7 |
| VIC | 4 | 6 | 3 | 7 | 5 | 3 | 9 | 9 | 4 | 4 | 2 | 2 | 2 | 2 | 4 | 1 | 3 | 9 | 13 | 4 | 6 | 17 | 16 | 5 |
| VSS | 1 | 2 | 5 | 4 | 2 | 3 | 2 | 2 | 2 | 5 | 2 | 4 | 4 | 6 | 7 | 7 | 3 | 2 | 2 | 5 | 8 | 5 | 11 | 5 |
| WNG | 1 | 1 | 8 | 12 | 2 | 3 | 8 | 4 | 2 | 8 | 5 | 3 | 6 | 11 | 6 | 12 | 3 | 2 | 1 | 3 | 19 | 18 | 16 | 7 |
| YKC | 18 | 26 | 173 | 176 | 160 | 231 | 190 | 329 | 157 | 60 | 41 | 33 | 17 | 30 | 12 | 24 | 25 | 22 | 10 | 40 | 159 | 174 | 187 | 21 |
- Date modified: