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 | 4 | 4 | 15 | 17 | 11 | 12 | 5 | 15 | 9 | 5 | 2 | 3 | 3 | 5 | 5 | 3 | 4 | 3 | 1 | 2 | 5 | 3 | |
| ABG | 6 | 10 | 3 | 8 | 5 | 12 | 13 | 7 | 3 | 9 | 11 | 6 | 2 | 6 | 2 | 3 | 2 | 1 | 2 | 1 | 2 | 1 | 4 | 1 |
| ABK | 77 | 40 | 37 | 30 | 16 | 32 | 16 | 16 | 20 | 19 | 29 | 12 | 18 | 14 | 30 | 27 | 22 | 25 | 23 | 41 | 50 | 26 | 33 | 40 |
| AIA | 9 | 18 | 21 | 14 | 8 | 21 | 10 | 7 | 17 | 6 | 21 | 11 | 7 | 3 | 11 | 5 | 7 | 7 | 7 | 3 | 8 | 4 | 14 | 22 |
| AMS | 6 | 7 | 6 | 9 | 6 | 8 | 7 | 12 | 10 | 14 | 5 | 21 | 10 | 3 | 14 | 10 | 10 | 6 | 9 | 5 | 11 | 3 | 7 | 13 |
| API | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 |
| AQU | 6 | 6 | 6 | 8 | 7 | 10 | 8 | 2 | 5 | 18 | 18 | 5 | 3 | 4 | 15 | 11 | 8 | 3 | 5 | 4 | 3 | 3 | 5 | 7 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 1 | 2 | 2 | 2 | 5 | 3 | 4 | 12 | 12 | 7 | 7 | 5 | 2 | 19 | 17 | 6 | 2 | 2 | 4 | 3 | 2 | 2 | 2 |
| ASP | 10 | 7 | 11 | 7 | 7 | 9 | 5 | 6 | 8 | 14 | 14 | 9 | 5 | 4 | 11 | 9 | 5 | 6 | 3 | 2 | 6 | 2 | 12 | 17 |
| BDV | 7 | 7 | 9 | 10 | 6 | 13 | 8 | 4 | 6 | 14 | 22 | 6 | 4 | 4 | 10 | 11 | 7 | 5 | 5 | 6 | 5 | 4 | 5 | 10 |
| BEL | 8 | 8 | 10 | 13 | 4 | 13 | 8 | 5 | 10 | 17 | 17 | 5 | 5 | 7 | 16 | 10 | 5 | 3 | 6 | 7 | 8 | 5 | 6 | 12 |
| BFE | 10 | 13 | 13 | 16 | 6 | 17 | 9 | 8 | 6 | 12 | 19 | 9 | 9 | 7 | 13 | 9 | 7 | 7 | 8 | 9 | 7 | 5 | 9 | 16 |
| BFO | ||||||||||||||||||||||||
| BLC | 51 | 119 | 122 | 94 | 43 | 102 | 105 | 23 | 20 | 47 | 157 | 99 | 45 | 66 | 40 | 105 | 46 | 51 | 84 | 125 | 61 | 44 | 46 | 67 |
| BMT | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 2 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 7 | 28 | 29 | 8 | 9 | 15 | 5 | 3 | 6 | 25 | 31 | 7 | 15 | 14 | 19 | 10 | 17 | 15 | 5 | 5 | 3 | 2 | 10 | 12 |
| BOX | 8 | 12 | 9 | 13 | 9 | 12 | 5 | 9 | 13 | 16 | 12 | 12 | 5 | 5 | 20 | 4 | 6 | 5 | 9 | 11 | 15 | 6 | 7 | 19 |
| BRW | 77 | 85 | 105 | 123 | 79 | 85 | 45 | 23 | 83 | 320 | 364 | 87 | 85 | 128 | 155 | 132 | 242 | 379 | 227 | 112 | 63 | 64 | 35 | 54 |
| BSL | 5 | 22 | 18 | 7 | 5 | 11 | 4 | 3 | 7 | 7 | 19 | 14 | 9 | 7 | 23 | 16 | 19 | 5 | 5 | 4 | 8 | 8 | 9 | 9 |
| CBB | 49 | 113 | 44 | 71 | 33 | 107 | 85 | 34 | 14 | 59 | 124 | 75 | 21 | 23 | 54 | 35 | 48 | 41 | 163 | 99 | 94 | 47 | 35 | 47 |
| CLF | 8 | 12 | 8 | 11 | 7 | 16 | 9 | 8 | 3 | 12 | 23 | 14 | 7 | 5 | 10 | 9 | 8 | 8 | 4 | 6 | 3 | 4 | 7 | 10 |
| CMO | 40 | 32 | 36 | 41 | 27 | 92 | 38 | 7 | 31 | 143 | 88 | 112 | 63 | 41 | 74 | 67 | 26 | 31 | 38 | 24 | 21 | 20 | 17 | 21 |
| CNB | 4 | 15 | 12 | 8 | 6 | 9 | 6 | 7 | 7 | 28 | 22 | 9 | 11 | 8 | 10 | 9 | 11 | 7 | 3 | 2 | 6 | 10 | 9 | 7 |
| CSY | ||||||||||||||||||||||||
| CTA | 3 | 12 | 9 | 9 | 12 | 8 | 4 | 10 | 6 | 15 | 12 | 4 | 4 | 5 | 6 | 7 | 5 | 5 | 2 | 2 | 6 | 13 | 16 | 8 |
| CZT | 9 | 11 | 9 | 14 | 5 | 9 | 6 | 4 | 11 | 24 | 4 | 19 | 7 | 4 | 4 | 4 | 7 | 7 | 16 | 7 | 7 | 5 | 12 | 20 |
| DLR | ||||||||||||||||||||||||
| DOU | 7 | 12 | 9 | 13 | 7 | 16 | 9 | 7 | 5 | 12 | 24 | 13 | 8 | 6 | 10 | 9 | 9 | 9 | 5 | 6 | 4 | 4 | 7 | 10 |
| DRV | 81 | 121 | 76 | 87 | 39 | 63 | 40 | 25 | 36 | 80 | 87 | 23 | 21 | 23 | 46 | 37 | 54 | 27 | 29 | 53 | 20 | 34 | 41 | 76 |
| EBR | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 3 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| ESK | 9 | 15 | 13 | 17 | 13 | 21 | 10 | 8 | 6 | 13 | 22 | 9 | 20 | 7 | 11 | 6 | 6 | 10 | 12 | 8 | 6 | 5 | 10 | 14 |
| EUA | ||||||||||||||||||||||||
| EYR | 18 | 12 | 8 | 5 | 11 | 11 | 8 | 4 | 20 | 19 | 15 | 26 | 8 | 7 | 21 | 16 | 10 | 3 | 7 | 4 | 10 | 8 | 4 | 11 |
| FCC | 27 | 72 | 146 | 53 | 79 | 174 | 33 | 13 | 92 | 214 | 129 | 74 | 18 | 23 | 41 | 22 | 24 | 20 | 31 | 63 | 30 | 24 | 50 | 34 |
| FRD | 6 | 19 | 16 | 7 | 7 | 12 | 5 | 4 | 9 | 5 | 18 | 17 | 9 | 7 | 22 | 18 | 17 | 13 | 3 | 3 | 14 | 8 | 7 | 12 |
| FRN | 12 | 17 | 12 | 4 | 5 | 13 | 4 | 2 | 5 | 18 | 16 | 9 | 11 | 17 | 9 | 8 | 9 | 12 | 15 | 4 | 3 | 7 | 5 | 3 |
| FUR | 7 | 8 | 9 | 10 | 7 | 14 | 8 | 4 | 5 | 15 | 21 | 9 | 4 | 5 | 8 | 11 | 7 | 6 | 6 | 6 | 5 | 4 | 5 | 9 |
| GCK | ||||||||||||||||||||||||
| GDH | 45 | 19 | 34 | 50 | 23 | 65 | 35 | 55 | 47 | 88 | 99 | 153 | 62 | 46 | 56 | 95 | 68 | 70 | 63 | 68 | 31 | 36 | 36 | 97 |
| GNA | 21 | 14 | 7 | 11 | 12 | 10 | 8 | 4 | 5 | 17 | 24 | 26 | 20 | 6 | 23 | 21 | 16 | 9 | 8 | 5 | 14 | 6 | 4 | 12 |
| GUA | 13 | 2 | 5 | 3 | 6 | 14 | 12 | 3 | 6 | 3 | 3 | 1 | 2 | 1 | 3 | 2 | 2 | 2 | 1 | 1 | 7 | 3 | 7 | 8 |
| GUI | 3 | 8 | 4 | 4 | 4 | 11 | 4 | 7 | 4 | 6 | 13 | 15 | 23 | 8 | 7 | 12 | 10 | 13 | 10 | 2 | 2 | 2 | 4 | 4 |
| GZH | 0 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 0 |
| HAD | 7 | 15 | 7 | 12 | 10 | 16 | 8 | 7 | 5 | 11 | 19 | 11 | 17 | 6 | 7 | 9 | 6 | 9 | 9 | 5 | 4 | 4 | 7 | 10 |
| HBK | 5 | 7 | 4 | 7 | 8 | 5 | 15 | 10 | 6 | 17 | 9 | 6 | 6 | 3 | 3 | 6 | 6 | 4 | 6 | 3 | 4 | 2 | 5 | 5 |
| HER | 5 | 10 | 3 | 9 | 3 | 3 | 9 | 10 | 6 | 12 | 12 | 3 | 2 | 3 | 4 | 8 | 5 | 4 | 4 | 3 | 4 | 2 | 5 | 5 |
| HLP | 9 | 9 | 13 | 15 | 6 | 15 | 7 | 5 | 8 | 18 | 22 | 7 | 5 | 9 | 21 | 6 | 7 | 5 | 6 | 9 | 10 | 7 | 8 | 16 |
| HON | 11 | 3 | 8 | 7 | 3 | 6 | 3 | 2 | 3 | 1 | 4 | 3 | 5 | 5 | 2 | 2 | 9 | 7 | 6 | 5 | 11 | 11 | 9 | 2 |
| HRB | 7 | 7 | 9 | 11 | 4 | 11 | 7 | 3 | 9 | 17 | 16 | 4 | 6 | 5 | 12 | 11 | 6 | 3 | 7 | 6 | 5 | 4 | 6 | 10 |
| HRN | 74 | 59 | 44 | 96 | 144 | 190 | 37 | 71 | 81 | 56 | 111 | 87 | 51 | 66 | 78 | 65 | 66 | 86 | 98 | 52 | 68 | 91 | 57 | 47 |
| HUA | 2 | 2 | 3 | 4 | 4 | 4 | 1 | 2 | 3 | 2 | 5 | 13 | 7 | 7 | 6 | 4 | 9 | 2 | 7 | 5 | 2 | 3 | 2 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 73 | 185 | 261 | 154 | 48 | 98 | 36 | 33 | 58 | 123 | 209 | 85 | 77 | 59 | 71 | 74 | 41 | 74 | 162 | 86 | 23 | 31 | 177 | 129 |
| IRT | 8 | 14 | 8 | 19 | 14 | 7 | 11 | 5 | 4 | 9 | 15 | 12 | 8 | 6 | 16 | 8 | 8 | 6 | 5 | 4 | 5 | 5 | 15 | 3 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 1 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| KDU | 11 | 6 | 8 | 9 | 8 | 9 | 4 | 2 | 6 | 11 | 7 | 7 | 3 | 2 | 6 | 7 | 4 | 4 | 2 | 2 | 5 | 5 | 15 | 21 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 2 | 2 | 1 | 0 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 2 | 0 | 1 |
| KOU | 1 | 4 | 3 | 3 | 2 | 5 | 2 | 4 | 4 | 7 | 5 | 4 | 15 | 17 | 10 | 7 | 5 | 4 | 12 | 4 | 8 | 6 | 2 | 5 |
| LER | 11 | 12 | 18 | 19 | 17 | 24 | 9 | 8 | 7 | 10 | 22 | 9 | 16 | 6 | 9 | 10 | 5 | 7 | 11 | 8 | 9 | 5 | 11 | 14 |
| LRM | 18 | 10 | 8 | 9 | 12 | 9 | 11 | 5 | 3 | 15 | 12 | 22 | 19 | 5 | 19 | 17 | 10 | 6 | 5 | 5 | 11 | 5 | 6 | 16 |
| LVV | 7 | 6 | 10 | 12 | 6 | 11 | 8 | 4 | 14 | 18 | 13 | 5 | 6 | 7 | 18 | 9 | 5 | 4 | 9 | 8 | 8 | 6 | 5 | 10 |
| LYC | ||||||||||||||||||||||||
| LZH | 11 | 11 | 7 | 24 | 17 | 9 | 4 | 2 | 8 | 13 | 6 | 5 | 6 | 3 | 7 | 3 | 5 | 2 | 2 | 3 | 3 | 4 | 17 | 7 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 4 | 4 | 4 | 3 | 10 | 3 | 5 | 6 | 14 | 11 | 18 | 15 | 4 | 18 | 12 | 13 | 9 | 10 | 7 | 3 | 2 | 4 | 4 |
| MCQ | 15 | 17 | 13 | 31 | 14 | 28 | 15 | 5 | 13 | 62 | 77 | 61 | 54 | 35 | 35 | 17 | 21 | 28 | 18 | 11 | 4 | 12 | 7 | 14 |
| MEA | 15 | 28 | 45 | 12 | 19 | 83 | 11 | 4 | 19 | 89 | 82 | 17 | 17 | 26 | 25 | 14 | 13 | 16 | 11 | 15 | 11 | 9 | 11 | 16 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| NAQ | 65 | 114 | 94 | 48 | 52 | 95 | 15 | 21 | 20 | 25 | 44 | 17 | 25 | 14 | 31 | 16 | 23 | 27 | 45 | 40 | 39 | 10 | 36 | 118 |
| NCK | 7 | 7 | 8 | 10 | 5 | 11 | 7 | 3 | 8 | 15 | 17 | 4 | 4 | 4 | 10 | 10 | 6 | 3 | 6 | 6 | 5 | 4 | 5 | 9 |
| NEW | 9 | 20 | 28 | 7 | 12 | 33 | 5 | 2 | 8 | 41 | 34 | 14 | 16 | 20 | 21 | 7 | 13 | 16 | 7 | 6 | 5 | 6 | 6 | 9 |
| NGK | 8 | 9 | 12 | 13 | 6 | 16 | 9 | 5 | 6 | 14 | 20 | 9 | 6 | 7 | 12 | 10 | 7 | 6 | 7 | 7 | 5 | 5 | 7 | 12 |
| NUR | 11 | 11 | 15 | 15 | 6 | 14 | 6 | 6 | 11 | 15 | 19 | 6 | 5 | 7 | 22 | 6 | 5 | 5 | 6 | 10 | 14 | 7 | 9 | 22 |
| NVS | 13 | 15 | 9 | 16 | 12 | 10 | 12 | 16 | 5 | 15 | 23 | 12 | 5 | 15 | 11 | 7 | 4 | 4 | 11 | 5 | 7 | 8 | 5 | |
| OTT | 6 | 25 | 30 | 12 | 15 | 18 | 7 | 6 | 14 | 14 | 26 | 15 | 14 | 11 | 29 | 14 | 18 | 10 | 7 | 8 | 15 | 8 | 15 | 16 |
| PAF | 6 | 12 | 6 | 13 | 15 | 13 | 7 | 12 | 8 | 19 | 13 | 24 | 9 | 5 | 19 | 9 | 15 | 12 | 27 | 9 | 22 | 5 | 13 | 29 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 6 | 7 | 13 | 29 | 18 | 5 | 6 | 4 | 11 | 10 | 5 | 7 | 3 | 2 | 3 | 4 | 2 | 3 | 1 | 2 | 3 | 5 | 17 | 8 |
| PPT | 4 | 5 | 5 | 3 | 4 | 3 | 1 | 1 | 4 | 5 | 4 | 10 | 3 | 3 | 6 | 7 | 4 | 5 | 12 | 7 | 3 | 9 | 5 | 10 |
| PST | ||||||||||||||||||||||||
| QSB | 5 | 3 | 5 | 10 | 6 | 6 | 6 | 19 | 16 | 6 | 5 | 10 | 2 | 3 | 10 | 3 | 4 | 3 | 3 | 5 | 2 | 2 | 4 | 7 |
| RES | 57 | 108 | 35 | 63 | 25 | 94 | 28 | 44 | 18 | 45 | 58 | 54 | 23 | 35 | 51 | 128 | 39 | 27 | 109 | 62 | 101 | 63 | 49 | 53 |
| SBA | 48 | 44 | 43 | 75 | 30 | 64 | 38 | 21 | 54 | 30 | 46 | 45 | 37 | 19 | 88 | 64 | 35 | 34 | 62 | 52 | 37 | 40 | 35 | 63 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 8 | 13 | 30 | 15 | 12 | 54 | 27 | 4 | 44 | 45 | 19 | 25 | 19 | 28 | 30 | 33 | 17 | 12 | 7 | 18 | 14 | 3 | 9 | 7 |
| SJG | 2 | 4 | 3 | 2 | 3 | 4 | 2 | 4 | 2 | 5 | 10 | 10 | 7 | 8 | 16 | 10 | 9 | 7 | 3 | 2 | 9 | 5 | 5 | 8 |
| SOD | 23 | 29 | 18 | 21 | 10 | 17 | 9 | 13 | 10 | 17 | 28 | 10 | 13 | 11 | 30 | 17 | 12 | 10 | 20 | 14 | 34 | 18 | 15 | 27 |
| SPT | 4 | 9 | 3 | 6 | 6 | 13 | 8 | 10 | 3 | 14 | 24 | 18 | 7 | 3 | 9 | 13 | 6 | 9 | 4 | 2 | 2 | 3 | 4 | 6 |
| STJ | 7 | 17 | 26 | 4 | 4 | 14 | 10 | 8 | 5 | 11 | 12 | 14 | 16 | 13 | 25 | 15 | 11 | 3 | 18 | 8 | 11 | 4 | 8 | 17 |
| SUA | 6 | 4 | 6 | 12 | 4 | 7 | 5 | 5 | 16 | 17 | 8 | 5 | 4 | 6 | 16 | 8 | 4 | 3 | 6 | 6 | 5 | 3 | 4 | 8 |
| TAM | 4 | 4 | 3 | 4 | 3 | 5 | 11 | 4 | 3 | 21 | 22 | 5 | 4 | 6 | 11 | 11 | 2 | 5 | 5 | 2 | 2 | 2 | 4 | 4 |
| TAN | 3 | 3 | 6 | 5 | 7 | 19 | 13 | 3 | 6 | 14 | 12 | 2 | 2 | 4 | 4 | 1 | 4 | 3 | 5 | 2 | 3 | 1 | 5 | 5 |
| TDC | ||||||||||||||||||||||||
| THL | 53 | 55 | 32 | 46 | 29 | 102 | 41 | 43 | 32 | 52 | 41 | 72 | 50 | 32 | 35 | 47 | 69 | 60 | 58 | 69 | 22 | 45 | 58 | 73 |
| THY | 7 | 7 | 9 | 11 | 5 | 12 | 7 | 3 | 9 | 17 | 17 | 4 | 6 | 5 | 12 | 11 | 7 | 3 | 7 | 6 | 5 | 4 | 6 | 10 |
| TRW | 1 | 8 | 5 | 6 | 5 | 7 | 2 | 3 | 6 | 4 | 10 | 5 | 14 | 5 | 12 | 11 | 12 | 2 | 9 | 4 | 7 | 6 | 6 | 8 |
| TSU | 4 | 5 | 3 | 6 | 5 | 3 | 9 | 8 | 5 | 10 | 7 | 5 | 8 | 3 | 2 | 4 | 7 | 4 | 3 | 3 | 3 | 2 | 4 | 3 |
| TUC | 7 | 16 | 15 | 4 | 4 | 10 | 3 | 2 | 2 | 14 | 18 | 5 | 14 | 16 | 12 | 6 | 12 | 22 | 7 | 4 | 4 | 3 | 7 | 11 |
| UPS | 12 | 9 | 18 | 15 | 5 | 16 | 7 | 7 | 8 | 13 | 19 | 7 | 7 | 7 | 16 | 7 | 7 | 5 | 4 | 10 | 10 | 6 | 8 | 19 |
| VAL | 7 | 18 | 5 | 13 | 12 | 17 | 8 | 8 | 6 | 10 | 14 | 10 | 21 | 9 | 6 | 9 | 4 | 9 | 13 | 4 | 6 | 5 | 9 | 11 |
| VIC | 9 | 17 | 19 | 7 | 9 | 32 | 9 | 1 | 14 | 36 | 24 | 15 | 15 | 21 | 19 | 11 | 14 | 14 | 9 | 6 | 5 | 4 | 6 | 4 |
| VSS | 1 | 2 | 4 | 3 | 4 | 4 | 2 | 3 | 6 | 5 | 17 | 9 | 4 | 4 | 3 | 3 | 3 | 7 | 5 | 3 | 5 | 3 | 3 | 4 |
| WNG | 9 | 11 | 14 | 15 | 7 | 18 | 9 | 6 | 4 | 14 | 21 | 10 | 8 | 8 | 12 | 7 | 7 | 8 | 6 | 8 | 6 | 5 | 8 | 14 |
| YKC | 36 | 47 | 56 | 66 | 85 | 281 | 29 | 27 | 177 | 257 | 294 | 127 | 34 | 44 | 55 | 33 | 27 | 28 | 32 | 64 | 35 | 21 | 41 | 27 |
- Date modified: