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 | 8 | 13 | 6 | 4 | 3 | 9 | 6 | 6 | 2 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 |
| ABG | 5 | 5 | 7 | 10 | 8 | 3 | 8 | 15 | 3 | 7 | 4 | 5 | 3 | 3 | 5 | 3 | 3 | 3 | 4 | 2 | 3 | 4 | 3 | 5 |
| ABK | 77 | 16 | 13 | 13 | 18 | 16 | 25 | 11 | 30 | 9 | 9 | 10 | 34 | 29 | 19 | 24 | 51 | 17 | 23 | 44 | 19 | 173 | 39 | 38 |
| AIA | 3 | 3 | 2 | 4 | 6 | 18 | 10 | 18 | 10 | 9 | 4 | 5 | 6 | 5 | 2 | 7 | 5 | 3 | 4 | 12 | 4 | 5 | 5 | 3 |
| AMS | 2 | 3 | 3 | 4 | 5 | 5 | 3 | 4 | 8 | 1 | 2 | 3 | 3 | 3 | 5 | 7 | 8 | 4 | 6 | 7 | 3 | 9 | 13 | 4 |
| API | 1 | 2 | 6 | 3 | 3 | 2 | 3 | 2 | 1 | 3 | 2 | 1 | 4 | 1 | 2 | 2 | 1 | 2 | 3 | 3 | 2 | 2 | 3 | 2 |
| AQU | 1 | 1 | 1 | 1 | 2 | 4 | 2 | 6 | 6 | 11 | 4 | 4 | 9 | 6 | 5 | 6 | 5 | 2 | 2 | 2 | 1 | 1 | 2 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 2 | 4 | 2 | 2 | 3 | 3 | 0 | 3 | 2 | 2 | 2 | 1 | 1 | 0 | 2 |
| ASP | 3 | 2 | 1 | 3 | 1 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 5 |
| BDV | 2 | 1 | 1 | 0 | 2 | 2 | 2 | 3 | 4 | 12 | 13 | 4 | 12 | 9 | 3 | 5 | 5 | 1 | 1 | 1 | 1 | 4 | 1 | 1 |
| BEL | 2 | 3 | 3 | 2 | 2 | 2 | 3 | 8 | 8 | 11 | 5 | 8 | 16 | 8 | 3 | 8 | 4 | 4 | 4 | 4 | 1 | 3 | 4 | 2 |
| BFE | 5 | 4 | 3 | 2 | 3 | 4 | 3 | 12 | 2 | 8 | 4 | 2 | 19 | 9 | 7 | 8 | 6 | 6 | 7 | 8 | 2 | 5 | 11 | 5 |
| BFO | ||||||||||||||||||||||||
| BLC | 62 | 12 | 18 | 10 | 79 | 140 | 74 | 164 | 181 | 97 | 25 | 65 | 70 | 131 | 103 | 242 | 48 | 49 | 99 | 93 | 63 | 139 | 84 | 70 |
| BMT | 2 | 3 | 10 | 5 | 1 | 2 | 3 | 6 | 5 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 4 |
| BNG | 1 | 1 | 1 | 2 | 2 | 7 | 3 | 4 | 9 | 5 | 2 | 7 | 3 | 3 | 2 | 6 | 4 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| BOU | 1 | 1 | 1 | 1 | 2 | 3 | 1 | 15 | 9 | 4 | 1 | 1 | 2 | 4 | 1 | 7 | 10 | 3 | 8 | 5 | 2 | 6 | 5 | 3 |
| BOX | 6 | 2 | 2 | 2 | 3 | 1 | 5 | 9 | 6 | 3 | 6 | 11 | 16 | 5 | 4 | 3 | 6 | 3 | 4 | 1 | 3 | 15 | 6 | 6 |
| BRW | 12 | 16 | 12 | 18 | 73 | 51 | 38 | 77 | 163 | 85 | 15 | 29 | 184 | 99 | 61 | 57 | 58 | 61 | 49 | 77 | 16 | 15 | 19 | 21 |
| BSL | 2 | 2 | 1 | 4 | 3 | 6 | 4 | 3 | 7 | 4 | 2 | 3 | 3 | 11 | 3 | 2 | 2 | 2 | 2 | 8 | 1 | 3 | 5 | 1 |
| CBB | 99 | 11 | 22 | 20 | 26 | 54 | 32 | 125 | 123 | 43 | 14 | 16 | 48 | 114 | 64 | 67 | 99 | 186 | 82 | 157 | 73 | 114 | 79 | 38 |
| CLF | 0 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 6 | 17 | 8 | 5 | 13 | 9 | 7 | 9 | 2 | 1 | 2 | 2 | 2 | 1 | 1 |
| CMO | 14 | 10 | 11 | 18 | 54 | 19 | 44 | 155 | 127 | 76 | 69 | 82 | 186 | 77 | 85 | 25 | 40 | 43 | 12 | 23 | 16 | 16 | 16 | 10 |
| CNB | 5 | 2 | 3 | 11 | 11 | 6 | 4 | 4 | 9 | 4 | 1 | 2 | 12 | 7 | 2 | 2 | 9 | 2 | 2 | 6 | 3 | 3 | 3 | 3 |
| CSY | ||||||||||||||||||||||||
| CTA | 4 | 2 | 5 | 3 | 1 | 5 | 3 | 1 | 3 | 0 | 1 | 1 | 3 | 1 | 2 | 1 | 2 | 1 | 1 | 2 | 3 | 6 | 10 | 6 |
| CZT | 3 | 1 | 2 | 4 | 2 | 4 | 3 | 9 | 3 | 1 | 3 | 6 | 4 | 2 | 6 | 8 | 9 | 3 | 9 | 11 | 4 | 15 | 11 | 5 |
| DLR | 5 | 1 | 2 | 3 | 2 | 3 | 4 | 5 | 2 | 2 | 1 | 2 | 4 | 8 | 12 | 10 | 5 | 3 | 5 | 9 | 4 | 7 | 7 | 4 |
| DOU | 3 | 2 | 2 | 1 | 2 | 3 | 2 | 2 | 3 | 6 | 13 | 5 | 6 | 10 | 7 | 6 | 10 | 2 | 4 | 3 | 4 | 6 | 3 | 3 |
| DRV | 101 | 56 | 76 | 109 | 55 | 35 | 44 | 58 | 41 | 15 | 15 | 17 | 88 | 33 | 41 | 31 | 44 | 33 | 37 | 70 | 45 | 46 | 42 | 43 |
| EBR | 4 | 3 | 2 | 3 | 4 | 5 | 3 | 9 | 5 | 9 | 8 | 8 | 5 | 7 | 13 | 10 | 11 | 6 | 6 | 6 | 4 | 8 | 9 | 3 |
| ESK | 3 | 3 | 1 | 1 | 1 | 6 | 1 | 2 | 6 | 4 | 1 | 5 | 4 | 8 | 6 | 9 | 11 | 3 | 3 | 6 | 3 | 5 | 2 | 2 |
| EUA | ||||||||||||||||||||||||
| EYR | 3 | 3 | 4 | 5 | 4 | 5 | 4 | 8 | 14 | 7 | 4 | 3 | 17 | 7 | 4 | 4 | 5 | 4 | 4 | 3 | 3 | 2 | 4 | 5 |
| FCC | 24 | 8 | 12 | 33 | 239 | 446 | 80 | 287 | 323 | 76 | 34 | 74 | 150 | 129 | 66 | 64 | 26 | 16 | 20 | 24 | 25 | 28 | 30 | 33 |
| FRD | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 3 | 4 | 2 | 1 | 2 | 1 | 5 | 1 | 1 | 3 | 2 | 4 | 4 | 5 | 3 | 2 |
| FRN | 2 | 2 | 4 | 1 | 1 | 2 | 1 | 4 | 5 | 0 | 0 | 1 | 3 | 2 | 2 | 6 | 16 | 12 | 3 | 12 | 4 | 3 | 5 | 7 |
| FUR | 1 | 1 | 0 | 0 | 1 | 2 | 2 | 4 | 2 | 11 | 14 | 2 | 12 | 9 | 6 | 5 | 5 | 2 | 1 | 1 | 1 | 3 | 1 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 45 | 14 | 10 | 22 | 27 | 47 | 34 | 26 | 48 | 73 | 79 | 93 | 46 | 41 | 103 | 73 | 160 | 98 | 29 | 16 | 35 | 56 | 29 | 31 |
| GNA | 12 | 17 | 7 | 6 | 9 | 11 | 6 | 12 | 10 | 7 | 3 | 4 | 13 | 7 | 12 | 19 | 4 | 5 | 10 | 16 | 6 | 8 | 13 | 10 |
| GUA | 9 | 3 | 6 | 2 | 6 | 2 | 2 | 3 | 2 | 3 | 1 | 1 | 4 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 2 | 2 | 5 |
| GUI | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 1 | 3 | 11 | 10 | 10 | 3 | 2 | 8 | 11 | 9 | 4 | 5 | 4 | 2 | 2 | 2 | 1 |
| GZH | 2 | 8 | 7 | 4 | 1 | 3 | 7 | 4 | 3 | 1 | 2 | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 2 | 2 | 2 |
| HAD | 2 | 3 | 2 | 1 | 3 | 3 | 3 | 8 | 4 | 6 | 9 | 10 | 4 | 15 | 13 | 11 | 11 | 2 | 3 | 6 | 3 | 3 | 4 | 2 |
| HBK | 1 | 2 | 2 | 2 | 4 | 3 | 2 | 4 | 4 | 12 | 4 | 5 | 7 | 7 | 7 | 3 | 3 | 3 | 4 | 3 | 2 | 6 | 3 | 2 |
| HER | 3 | 2 | 3 | 3 | 4 | 2 | 5 | 14 | 11 | 11 | 13 | 5 | 11 | 10 | 3 | 3 | 5 | 5 | 7 | 12 | 3 | 5 | 6 | 3 |
| HLP | 4 | 3 | 2 | 1 | 2 | 2 | 3 | 10 | 7 | 6 | 1 | 6 | 17 | 7 | 6 | 7 | 4 | 6 | 5 | 5 | 2 | 5 | 5 | 2 |
| HON | 7 | 4 | 2 | 1 | 4 | 3 | 3 | 4 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 7 | 2 | 5 | 4 | 11 | 11 | 3 | 6 |
| HRB | 2 | 1 | 1 | 1 | 3 | 3 | 4 | 3 | 6 | 13 | 9 | 2 | 12 | 10 | 6 | 5 | 3 | 2 | 2 | 2 | 1 | 4 | 1 | 1 |
| HRN | 67 | 39 | 65 | 41 | 74 | 51 | 159 | 80 | 116 | 58 | 32 | 120 | 111 | 34 | 45 | 69 | 94 | 20 | 43 | 39 | 19 | 114 | 55 | 82 |
| HUA | 1 | 2 | 1 | 1 | 1 | 2 | 3 | 3 | 2 | 1 | 1 | 2 | 2 | 4 | 3 | 2 | 5 | 4 | 7 | 3 | 3 | 3 | 2 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 71 | 42 | 15 | 22 | 58 | 108 | 88 | 28 | 75 | 74 | 77 | 29 | 63 | 63 | 34 | 29 | 64 | 76 | 129 | 67 | 42 | 27 | 65 | 64 |
| IRT | 5 | 2 | 4 | 4 | 5 | 3 | 1 | 1 | 6 | 3 | 4 | 2 | 2 | 0 | 1 | 6 | 5 | 1 | 3 | 1 | 2 | 1 | 2 | 5 |
| IZN | ||||||||||||||||||||||||
| KAK | 7 | 5 | 6 | 5 | 6 | 3 | 5 | 10 | 5 | 2 | 1 | 2 | 6 | 3 | 8 | 5 | 7 | 6 | 4 | 1 | 3 | 2 | 5 | 8 |
| KDU | 4 | 1 | 3 | 4 | 8 | 4 | 4 | 3 | 6 | 3 | 1 | 2 | 3 | 2 | 4 | 3 | 3 | 3 | 2 | 1 | 2 | 2 | 6 | 4 |
| KMH | ||||||||||||||||||||||||
| KNY | 7 | 11 | 5 | 4 | 2 | 6 | 8 | 6 | 3 | 1 | 3 | 1 | 8 | 3 | 7 | 5 | 5 | 6 | 2 | 2 | 3 | 2 | 2 | 3 |
| KOU | 2 | 1 | 1 | 2 | 3 | 3 | 2 | 3 | 5 | 2 | 7 | 10 | 8 | 3 | 7 | 14 | 6 | 9 | 4 | 6 | 5 | 4 | 3 | 3 |
| LER | 15 | 10 | 2 | 3 | 3 | 14 | 4 | 4 | 6 | 2 | 4 | 2 | 8 | 10 | 7 | 9 | 6 | 3 | 5 | 14 | 7 | 21 | 7 | 3 |
| LRM | 2 | 5 | 13 | 9 | 6 | 6 | 9 | 5 | 18 | 5 | 3 | 2 | 16 | 8 | 11 | 4 | 10 | 7 | 4 | 3 | 3 | 3 | 11 | 5 |
| LVV | 6 | 3 | 6 | 6 | 6 | 5 | 7 | 10 | 6 | 15 | 7 | 10 | 15 | 10 | 6 | 10 | 8 | 6 | 7 | 7 | 5 | 5 | 6 | 8 |
| LYC | ||||||||||||||||||||||||
| LZH | 4 | 2 | 8 | 8 | 6 | 4 | 7 | 3 | 6 | 0 | 1 | 2 | 2 | 1 | 3 | 1 | 3 | 1 | 2 | 2 | 1 | 1 | 1 | 2 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 1 | 2 | 2 | 2 | 1 | 2 | 5 | 13 | 6 | 14 | 11 | 5 | 19 | 23 | 13 | 3 | 7 | 9 | 2 | 2 | 4 | 1 | 1 |
| MCQ | 4 | 7 | 11 | 15 | 20 | 57 | 23 | 87 | 96 | 39 | 53 | 70 | 215 | 105 | 86 | 29 | 36 | 14 | 27 | 22 | 17 | 6 | 16 | 8 |
| MEA | 7 | 8 | 7 | 3 | 37 | 79 | 36 | 288 | 151 | 77 | 28 | 44 | 46 | 32 | 52 | 23 | 14 | 6 | 9 | 9 | 12 | 8 | 12 | 7 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 3 | 2 | 1 | 2 | 3 | 4 | 3 | 3 | 3 | 1 | 1 | 1 | 3 | 1 | 2 | 2 | 4 | 2 | 2 | 1 | 2 | 2 | 3 | 3 |
| NAQ | 37 | 11 | 19 | 30 | 65 | 154 | 124 | 50 | 44 | 25 | 11 | 5 | 27 | 18 | 24 | 27 | 27 | 44 | 43 | 40 | 44 | 80 | 75 | 36 |
| NCK | 1 | 1 | 0 | 1 | 3 | 2 | 3 | 3 | 5 | 10 | 11 | 2 | 10 | 9 | 5 | 4 | 4 | 1 | 1 | 1 | 1 | 4 | 1 | 1 |
| NEW | 5 | 2 | 2 | 1 | 4 | 7 | 2 | 42 | 16 | 17 | 2 | 5 | 8 | 9 | 10 | 4 | 2 | 3 | 1 | 3 | 4 | 3 | 6 | 2 |
| NGK | 4 | 1 | 1 | 1 | 2 | 2 | 1 | 4 | 7 | 10 | 7 | 3 | 11 | 12 | 2 | 6 | 6 | 2 | 3 | 3 | 2 | 7 | 3 | 3 |
| NUR | 14 | 4 | 3 | 2 | 3 | 3 | 2 | 8 | 3 | 4 | 6 | 8 | 20 | 5 | 5 | 10 | 16 | 5 | 9 | 8 | 5 | 22 | 8 | 8 |
| NVS | 3 | 4 | 3 | 4 | 3 | 9 | 9 | 8 | 12 | 5 | 8 | 7 | 8 | 4 | 7 | 9 | 6 | 5 | 6 | 6 | 5 | 5 | 5 | 4 |
| OTT | 4 | 3 | 1 | 3 | 6 | 14 | 12 | 16 | 10 | 15 | 2 | 3 | 3 | 3 | 4 | 5 | 2 | 11 | 4 | 6 | 4 | 7 | 7 | 3 |
| PAF | 1 | 4 | 2 | 2 | 7 | 2 | 4 | 4 | 5 | 1 | 2 | 3 | 5 | 5 | 4 | 8 | 13 | 4 | 9 | 9 | 9 | 19 | 6 | 5 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 3 | 3 | 10 | 8 | 6 | 4 | 6 | 5 | 10 | 2 | 3 | 2 | 6 | 2 | 5 | 4 | 4 | 2 | 2 | 4 | 2 | 2 | 2 | 2 |
| PPT | 3 | 3 | 3 | 3 | 4 | 3 | 4 | 8 | 7 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 6 | 4 | 4 | 4 | 10 | 3 | 1 | 7 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 1 | 2 | 3 | 2 | 3 | 12 | 10 | 3 | 7 | 8 | 10 | 2 | 1 | 2 | 2 | 2 | 3 | 2 | 2 | 1 | 3 | 4 | 1 |
| RES | 29 | 13 | 14 | 16 | 13 | 16 | 10 | 24 | 21 | 17 | 13 | 7 | 19 | 14 | 37 | 27 | 66 | 36 | 90 | 44 | 54 | 25 | 34 | 29 |
| SBA | 24 | 24 | 22 | 12 | 15 | 28 | 12 | 19 | 60 | 38 | 16 | 15 | 14 | 68 | 14 | 49 | 30 | 14 | 19 | 33 | 27 | 25 | 29 | 25 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 3 | 3 | 6 | 7 | 8 | 22 | 7 | 70 | 46 | 23 | 11 | 21 | 67 | 21 | 50 | 20 | 11 | 3 | 4 | 6 | 4 | 3 | 6 | 6 |
| SJG | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 4 | 2 | 2 | 2 | 6 | 7 | 2 | 3 | 2 | 1 | 3 | 1 | 4 | 3 | 1 | 3 | 1 |
| SOD | 64 | 9 | 6 | 6 | 10 | 8 | 11 | 4 | 18 | 7 | 10 | 12 | 36 | 24 | 19 | 12 | 61 | 17 | 38 | 32 | 30 | 130 | 47 | 45 |
| SPT | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 7 | 13 | 11 | 5 | 1 | 6 | 12 | 11 | 10 | 3 | 1 | 0 | 1 | 1 | 1 | 0 |
| STJ | 6 | 3 | 3 | 4 | 4 | 18 | 21 | 10 | 15 | 6 | 6 | 8 | 7 | 8 | 14 | 4 | 14 | 5 | 10 | 12 | 7 | 8 | 7 | 7 |
| SUA | ||||||||||||||||||||||||
| TAM | 1 | 1 | 1 | 1 | 1 | 4 | 2 | 4 | 6 | 2 | 8 | 9 | 8 | 5 | 2 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 2 | 0 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 10 | 10 | 10 | 11 | 13 | 13 | 9 | 25 | 25 | 20 | 22 | 35 | 18 | 18 | 50 | 33 | 44 | 23 | 32 | 19 | 24 | 22 | 12 | 8 |
| THY | 1 | 1 | 1 | 1 | 3 | 2 | 3 | 3 | 7 | 11 | 11 | 2 | 9 | 10 | 6 | 5 | 3 | 1 | 1 | 1 | 1 | 3 | 1 | 1 |
| TRW | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 3 | 2 | 1 | 3 | 2 | 3 | 3 | 8 | 4 | 8 | 7 | 2 | 3 | 1 | 1 | 2 |
| TSU | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 5 | 10 | 7 | 5 | 1 | 2 | 5 | 7 | 7 | 2 | 2 | 1 | 2 | 1 | 2 | 2 | 1 |
| TUC | 2 | 2 | 2 | 0 | 0 | 1 | 1 | 3 | 2 | 1 | 0 | 0 | 1 | 1 | 4 | 16 | 15 | 4 | 5 | 6 | 3 | 1 | 6 | 5 |
| UPS | 12 | 6 | 1 | 1 | 3 | 4 | 2 | 5 | 3 | 2 | 4 | 3 | 18 | 9 | 2 | 7 | 8 | 5 | 6 | 10 | 4 | 18 | 5 | 5 |
| VAL | 6 | 5 | 4 | 2 | 5 | 5 | 4 | 10 | 8 | 4 | 10 | 10 | 4 | 14 | 19 | 17 | 11 | 1 | 8 | 11 | 6 | 9 | 10 | 5 |
| VIC | 6 | 2 | 3 | 4 | 2 | 6 | 6 | 24 | 18 | 14 | 2 | 5 | 7 | 10 | 9 | 4 | 4 | 2 | 3 | 3 | 2 | 4 | 5 | 5 |
| VSS | 2 | 1 | 2 | 1 | 2 | 2 | 2 | 3 | 5 | 5 | 4 | 11 | 7 | 3 | 8 | 12 | 3 | 3 | 4 | 4 | 2 | 1 | 2 | 1 |
| WNG | 1 | 4 | 2 | 1 | 1 | 2 | 2 | 8 | 3 | 11 | 7 | 1 | 16 | 10 | 7 | 7 | 7 | 4 | 6 | 6 | 1 | 2 | 9 | 4 |
| YKC | 29 | 14 | 9 | 42 | 28 | 256 | 184 | 691 | 363 | 104 | 52 | 128 | 118 | 295 | 248 | 95 | 35 | 23 | 10 | 15 | 25 | 13 | 16 | 21 |
- Date modified: