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 | 2 | 7 | 5 | 8 | 22 | 48 | 31 | 24 | 19 | 15 | 12 | 27 | 7 | 5 | 4 | 4 | 3 | 5 | 15 | 10 | 7 | 16 | 14 | 15 |
| ABG | 5 | 7 | 10 | 15 | 10 | 14 | 17 | 6 | 7 | 8 | 9 | 18 | 5 | 10 | 10 | 9 | 7 | 9 | 9 | 11 | 8 | 13 | 8 | 11 |
| ABK | 33 | 78 | 34 | 21 | 29 | 48 | 25 | 24 | 33 | 28 | 59 | 54 | 41 | 32 | 20 | 58 | 11 | 26 | 40 | 77 | 47 | 223 | 223 | 151 |
| AIA | 5 | 12 | 8 | 5 | 10 | 9 | 10 | 14 | 13 | 5 | 11 | 7 | 7 | 8 | 8 | 7 | 8 | 6 | 11 | 7 | 8 | 9 | 23 | 17 |
| AMS | 2 | 4 | 8 | 4 | 9 | 5 | 17 | 5 | 3 | 5 | 6 | 7 | 4 | 3 | 2 | 2 | 3 | 3 | 7 | 14 | 6 | 10 | 3 | 6 |
| API | 3 | 10 | 9 | 11 | 14 | 4 | 5 | 5 | 5 | 4 | 6 | 7 | 11 | 2 | 1 | 4 | 1 | 3 | 3 | 4 | 5 | 5 | 5 | 4 |
| AQU | 4 | 6 | 8 | 2 | 8 | 4 | 8 | 4 | 3 | 13 | 11 | 6 | 4 | 6 | 5 | 5 | 3 | 3 | 13 | 9 | 8 | 21 | 18 | 17 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 9 | 6 | 2 | 4 | 6 | 3 | 8 | 2 | 5 | 5 | 5 | 3 | 3 | 7 | 5 | 11 | 10 | 11 | 4 | 4 | 9 | 17 | 16 |
| ASP | 3 | 9 | 4 | 7 | 18 | 6 | 14 | 3 | 9 | 4 | 4 | 7 | 9 | 3 | 3 | 5 | 2 | 3 | 4 | 5 | 3 | 9 | 5 | 5 |
| BDV | 4 | 5 | 8 | 3 | 9 | 4 | 10 | 7 | 5 | 8 | 11 | 10 | 7 | 9 | 8 | 6 | 4 | 4 | 15 | 10 | 10 | 23 | 16 | 18 |
| BEL | 5 | 5 | 8 | 4 | 12 | 6 | 13 | 9 | 8 | 10 | 13 | 15 | 13 | 15 | 10 | 12 | 5 | 7 | 20 | 12 | 11 | 25 | 14 | 17 |
| BFE | 6 | 7 | 10 | 5 | 8 | 8 | 14 | 11 | 11 | 10 | 18 | 21 | 18 | 17 | 13 | 17 | 10 | 11 | 25 | 18 | 14 | 28 | 13 | 18 |
| BFO | ||||||||||||||||||||||||
| BLC | 29 | 39 | 39 | 32 | 26 | 49 | 37 | 136 | 71 | 33 | 60 | 62 | 28 | 93 | 69 | 122 | 35 | 47 | 59 | 56 | 121 | 149 | 121 | 67 |
| BMT | 13 | 10 | 8 | 13 | 7 | 23 | 14 | 7 | 8 | 4 | 7 | 10 | 6 | 5 | 5 | 3 | 3 | 4 | 10 | 8 | 3 | 8 | 11 | 12 |
| BNG | 4 | 8 | 7 | 2 | 4 | 16 | 7 | 20 | 6 | |||||||||||||||
| BOU | 8 | 15 | 11 | 6 | 10 | 5 | 25 | 12 | 7 | 7 | 13 | 4 | 6 | 7 | 10 | 13 | 2 | 6 | 12 | 12 | 13 | 17 | 7 | 9 |
| BOX | 5 | 7 | 8 | 6 | 10 | 14 | 18 | 16 | 16 | 18 | 35 | 26 | 19 | 17 | 11 | 20 | 6 | 9 | 20 | 13 | 15 | 18 | 10 | 14 |
| BRW | 75 | 64 | 63 | 75 | 127 | 137 | 97 | 135 | 150 | 53 | 149 | 302 | 235 | 97 | 37 | 59 | 98 | 95 | 229 | 212 | 132 | 127 | 71 | 117 |
| BSL | 8 | 12 | 8 | 6 | 10 | 7 | 14 | 7 | 10 | 5 | 10 | 3 | 2 | 6 | 3 | 12 | 5 | 3 | 17 | 9 | 12 | 7 | 7 | 9 |
| CBB | 23 | 60 | 38 | 27 | 37 | 27 | 58 | 34 | 77 | 53 | 73 | 23 | 34 | 50 | 87 | 97 | 45 | 80 | 189 | 154 | 182 | 117 | 148 | 71 |
| CLF | 5 | 7 | 11 | 3 | 6 | 5 | 10 | 4 | 5 | 5 | 6 | 8 | 4 | 8 | 7 | 5 | 4 | 4 | 17 | 10 | 9 | 24 | 22 | 21 |
| CMO | 54 | 65 | 33 | 43 | 78 | 54 | 142 | 88 | 46 | 102 | 67 | 94 | 166 | 38 | 13 | 48 | 16 | 38 | 50 | 39 | 55 | 40 | 31 | 52 |
| CNB | 8 | 10 | 11 | 5 | 10 | 11 | 12 | 4 | 9 | 5 | 4 | 9 | 15 | 3 | 2 | 7 | 2 | 3 | 4 | 6 | 4 | 8 | 14 | 9 |
| CSY | ||||||||||||||||||||||||
| CTA | 8 | 12 | 10 | 8 | 19 | 7 | 10 | 2 | 9 | 4 | 4 | 9 | 13 | 3 | 2 | 6 | 1 | 3 | 4 | 4 | 6 | 8 | 6 | 4 |
| CZT | 5 | 7 | 7 | 4 | 8 | 5 | 9 | 6 | 5 | 5 | 6 | 10 | 5 | 6 | 2 | 3 | 2 | 3 | 13 | 13 | 7 | 23 | 27 | 15 |
| DLR | 7 | 11 | 9 | 6 | 8 | 6 | 19 | 7 | 9 | 5 | 10 | 4 | 5 | 3 | 7 | 9 | 3 | 5 | 14 | 12 | 9 | 7 | 6 | 12 |
| DOU | 6 | 8 | 12 | 4 | 6 | 8 | 10 | 6 | 7 | 7 | 10 | 12 | 7 | 10 | 10 | 6 | 6 | 7 | 17 | 13 | 11 | 26 | 23 | 21 |
| DRV | 84 | 79 | 71 | 33 | 78 | 22 | 19 | 52 | 42 | 33 | 14 | 18 | 31 | 13 | 14 | 15 | 6 | 13 | 14 | 28 | 53 | 55 | 29 | 38 |
| EBR | 5 | 10 | 12 | 3 | 16 | 17 | 11 | 7 | 14 | 13 | 11 | 9 | 6 | 12 | 10 | 11 | 10 | 8 | 20 | 19 | 10 | 23 | 22 | 21 |
| ESK | 9 | 9 | 15 | 6 | 7 | 11 | 13 | 9 | 11 | 11 | 13 | 19 | 14 | 18 | 19 | 18 | 14 | 14 | 27 | 23 | 16 | 37 | 30 | 23 |
| EUA | ||||||||||||||||||||||||
| EYR | 3 | 10 | 15 | 11 | 8 | 8 | 12 | 5 | 10 | 7 | 10 | 15 | 23 | 5 | 3 | 5 | 2 | 2 | 6 | 6 | 4 | 6 | 18 | 9 |
| FCC | 32 | 67 | 64 | 23 | 269 | 160 | 140 | 111 | 124 | 82 | 119 | 86 | 81 | 60 | 35 | 41 | 15 | 23 | 29 | 40 | 102 | 116 | 68 | 50 |
| FRD | 8 | 11 | 7 | 7 | 9 | 8 | 11 | 14 | 10 | 5 | 7 | 2 | 6 | 8 | 4 | 15 | 8 | 4 | 19 | 15 | 14 | 10 | 10 | 9 |
| FRN | 6 | 13 | 12 | 5 | 11 | 7 | 23 | 12 | 6 | 5 | 13 | 6 | 7 | 3 | 7 | 11 | 2 | 5 | 12 | 7 | 8 | 13 | 4 | 7 |
| FUR | 5 | 6 | 9 | 3 | 8 | 4 | 10 | 6 | 5 | 7 | 11 | 9 | 5 | 9 | 7 | 6 | 4 | 4 | 16 | 10 | 10 | 23 | 18 | 18 |
| GCK | ||||||||||||||||||||||||
| GDH | 13 | 46 | 53 | 95 | 25 | 29 | 31 | 28 | 65 | 76 | 136 | 74 | 57 | 81 | 43 | 71 | 43 | 128 | 117 | 53 | 39 | 70 | 362 | 64 |
| GNA | 3 | 13 | 3 | 4 | 8 | 6 | 14 | 6 | 7 | 4 | 4 | 6 | 6 | 3 | 3 | 4 | 2 | 3 | 5 | 7 | 3 | 5 | 9 | 9 |
| GUA | 13 | 11 | 8 | 9 | 18 | 6 | 9 | 4 | 4 | 3 | 4 | 8 | 9 | 3 | 2 | 4 | 2 | 2 | 6 | 2 | 6 | 6 | 11 | 16 |
| GUI | 4 | 9 | 10 | 3 | 4 | 5 | 8 | 6 | 6 | 10 | 9 | 3 | 3 | 4 | 5 | 4 | 9 | 13 | 18 | 6 | 6 | 15 | 20 | 18 |
| GZH | 3 | 5 | 16 | 13 | 12 | 7 | 13 | 6 | 7 | 3 | 5 | 10 | 7 | 4 | 3 | 2 | 2 | 3 | 8 | 7 | 3 | 5 | 10 | 5 |
| HAD | 6 | 9 | 13 | 4 | 6 | 6 | 9 | 5 | 7 | 5 | 7 | 12 | 7 | 10 | 11 | 7 | 10 | 10 | 19 | 14 | 11 | 28 | 25 | 24 |
| HBK | 6 | 9 | 8 | 3 | 6 | 11 | 7 | 4 | 9 | 4 | 9 | 16 | 3 | 3 | 6 | 7 | 2 | 4 | 14 | 9 | 5 | 17 | 22 | 15 |
| HER | 7 | 11 | 9 | 3 | 8 | 7 | 6 | 6 | 6 | 3 | 4 | 13 | 7 | 3 | 9 | 8 | 3 | 3 | 12 | 6 | 4 | 14 | 22 | 14 |
| HLP | 5 | 6 | 9 | 8 | 11 | 10 | 14 | 11 | 10 | 13 | 19 | 19 | 16 | 17 | 12 | 15 | 8 | 10 | 21 | 16 | 15 | 25 | 13 | 17 |
| HON | 3 | 9 | 4 | 5 | 7 | 5 | 5 | 5 | 3 | 3 | 6 | 6 | 10 | 2 | 2 | 5 | 5 | 1 | 8 | 5 | 4 | 9 | 2 | 7 |
| HRB | 4 | 5 | 8 | 3 | 10 | 4 | 9 | 6 | 5 | 11 | 13 | 11 | 5 | 9 | 7 | 7 | 4 | 4 | 15 | 10 | 10 | 23 | 16 | 17 |
| HRN | 36 | 39 | 85 | 84 | 81 | 163 | 98 | 55 | 141 | 77 | 169 | 80 | 102 | 71 | 23 | 67 | 26 | 29 | 64 | 98 | 45 | 49 | 38 | 21 |
| HUA | 4 | 7 | 5 | 5 | 9 | 7 | 11 | 5 | 5 | 3 | 8 | 5 | 36 | 41 | 47 | 19 | 9 | 30 | 74 | 38 | 27 | 10 | 20 | 16 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 31 | 178 | 111 | 89 | 29 | 72 | 38 | 78 | 111 | 108 | 172 | 108 | 66 | 90 | 41 | 55 | 45 | 141 | 299 | 156 | 126 | 43 | 233 | 79 |
| IRT | 16 | 12 | 8 | 6 | 7 | 30 | 19 | 19 | 15 | 10 | 14 | 16 | 9 | 8 | 8 | 9 | 3 | 7 | 16 | 10 | 5 | 11 | 14 | 11 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 5 | 8 | 9 | 8 | 8 | 11 | 8 | 8 | 3 | 4 | 7 | 6 | 3 | 3 | 2 | 1 | 2 | 5 | 4 | 4 | 5 | 18 | 13 |
| KDU | 5 | 7 | 5 | 8 | 19 | 8 | 12 | 4 | 7 | 4 | 4 | 8 | 9 | 2 | 2 | 4 | 2 | 3 | 4 | 5 | 2 | 11 | 4 | 6 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 4 | 5 | 9 | 8 | 10 | 10 | 8 | 8 | 3 | 5 | 8 | 6 | 4 | 4 | 2 | 1 | 2 | 6 | 5 | 4 | 3 | 18 | 14 |
| KOU | 3 | 5 | 5 | 3 | 4 | 4 | 3 | 6 | 3 | 7 | 8 | 3 | 16 | 7 | 4 | 3 | 7 | 12 | 20 | 7 | 7 | 4 | 12 | 13 |
| LER | 9 | 10 | 6 | 5 | 7 | 8 | 10 | 10 | 9 | 11 | 13 | 21 | 19 | 21 | 17 | 19 | 13 | 17 | 25 | 27 | 12 | 29 | 18 | 20 |
| LRM | 2 | 12 | 5 | 4 | 12 | 7 | 15 | 5 | 6 | 5 | 5 | 7 | 6 | 3 | 3 | 5 | 3 | 2 | 5 | 9 | 3 | 6 | 7 | 15 |
| LVV | 4 | 4 | 9 | 4 | 12 | 5 | 13 | 7 | 6 | 10 | 12 | 13 | 10 | 12 | 7 | 8 | 6 | 7 | 14 | 12 | 14 | 22 | 13 | 17 |
| LYC | ||||||||||||||||||||||||
| LZH | 13 | 13 | 4 | 8 | 6 | 20 | 9 | 6 | 6 | 4 | 6 | 12 | 7 | 5 | 5 | 3 | 2 | 3 | 10 | 9 | 3 | 7 | 6 | 9 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 7 | 10 | 3 | 3 | 5 | 3 | 12 | 10 | 17 | 11 | 10 | 2 | 7 | 7 | 7 | 10 | 12 | 16 | 6 | 7 | 11 | 19 | 16 |
| MCQ | 12 | 19 | 22 | 13 | 20 | 26 | 31 | 29 | 22 | 12 | 24 | 17 | 97 | 25 | 14 | 7 | 11 | 4 | 14 | 13 | 22 | 18 | 22 | 23 |
| MEA | 27 | 42 | 20 | 11 | 36 | 18 | 35 | 39 | 25 | 24 | 25 | 16 | 12 | 13 | 18 | 16 | 9 | 14 | 38 | 11 | 31 | 42 | 35 | 25 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 4 | 5 | 14 | 13 | 12 | 16 | 20 | 7 | 11 | 5 | 7 | 8 | 6 | 5 | 5 | 4 | 2 | 3 | 7 | 6 | 6 | 10 | 18 | 14 |
| NAQ | 36 | 153 | 110 | 32 | 87 | 47 | 97 | 65 | 90 | 32 | 45 | 28 | 12 | 27 | 21 | 28 | 22 | 42 | 97 | 54 | 39 | 64 | 202 | 91 |
| NCK | 4 | 5 | 8 | 3 | 8 | 4 | 9 | 5 | 4 | 9 | 12 | 10 | 4 | 8 | 6 | 6 | 3 | 4 | 14 | 10 | 10 | 21 | 16 | 16 |
| NEW | 16 | 29 | 17 | 8 | 26 | 14 | 32 | 14 | 10 | 12 | 19 | 4 | 7 | 6 | 12 | 10 | 5 | 12 | 25 | 12 | 20 | 23 | 20 | 16 |
| NGK | 5 | 6 | 9 | 4 | 9 | 5 | 12 | 8 | 8 | 8 | 13 | 15 | 12 | 13 | 11 | 11 | 8 | 8 | 20 | 14 | 12 | 27 | 17 | 19 |
| NUR | 5 | 10 | 6 | 5 | 9 | 14 | 16 | 14 | 15 | 15 | 30 | 25 | 25 | 20 | 15 | 23 | 8 | 11 | 23 | 13 | 13 | 17 | 13 | 16 |
| NVS | 9 | 10 | 12 | 8 | 11 | 20 | 13 | 19 | 13 | 14 | 16 | 16 | 8 | 10 | 5 | 8 | 4 | 3 | 14 | 11 | 5 | 7 | 11 | 11 |
| OTT | 10 | 14 | 9 | 7 | 11 | 9 | 24 | 23 | 7 | 7 | 12 | 7 | 8 | 12 | 10 | 17 | 13 | 15 | 19 | 18 | 23 | 19 | 17 | 12 |
| PAF | 8 | 7 | 7 | 7 | 13 | 9 | 12 | 8 | 9 | 11 | 14 | 15 | 4 | 5 | 3 | 3 | 3 | 3 | 17 | 23 | 14 | 19 | 7 | 18 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 4 | 7 | 14 | 13 | 14 | 10 | 15 | 7 | 7 | 3 | 7 | 12 | 7 | 5 | 4 | 2 | 2 | 4 | 8 | 9 | 4 | 6 | 7 | 8 |
| PPT | 6 | 6 | 6 | 2 | 8 | 4 | 8 | 6 | 3 | 2 | 7 | 5 | 8 | 2 | 1 | 5 | 3 | 4 | 5 | 3 | 5 | 4 | 8 | 7 |
| PST | ||||||||||||||||||||||||
| QSB | 4 | 6 | 8 | 4 | 11 | 5 | 11 | 11 | 13 | 23 | 7 | 13 | 4 | 9 | 13 | 5 | 4 | 3 | 17 | 12 | 11 | 22 | 16 | 17 |
| RES | 52 | 42 | 31 | 21 | 57 | 18 | 56 | 40 | 40 | 41 | 63 | 46 | 44 | 62 | 89 | 202 | 123 | 163 | 62 | 64 | 119 | 157 | 108 | 93 |
| SBA | 34 | 27 | 23 | 24 | 37 | 39 | 53 | 30 | 32 | 21 | 36 | 32 | 35 | 16 | 29 | 41 | 21 | 31 | 47 | 20 | 37 | 54 | 52 | 47 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 22 | 31 | 20 | 14 | 34 | 18 | 35 | 14 | 14 | 10 | 16 | 5 | 12 | 5 | 10 | 7 | 10 | 13 | 20 | 9 | 14 | 18 | 17 | 24 |
| SJG | 3 | 4 | 3 | 3 | 4 | 4 | 4 | 6 | 5 | 2 | 4 | 2 | 7 | 7 | 6 | 9 | 2 | 7 | 17 | 6 | 6 | 3 | 9 | 8 |
| SOD | 18 | 32 | 19 | 14 | 19 | 42 | 19 | 22 | 29 | 25 | 53 | 49 | 37 | 27 | 20 | 49 | 10 | 21 | 20 | 64 | 30 | 96 | 179 | 84 |
| SPT | 5 | 9 | 12 | 3 | 5 | 5 | 11 | 6 | 4 | 8 | 10 | 3 | 7 | 6 | 7 | 6 | 7 | 8 | 16 | 9 | 8 | 21 | 23 | 21 |
| STJ | 6 | 14 | 15 | 4 | 9 | 9 | 21 | 14 | 5 | 10 | 14 | 4 | 13 | 6 | 7 | 7 | 18 | 17 | 24 | 14 | 16 | 18 | 14 | 12 |
| SUA | 3 | 5 | 8 | 6 | 10 | 4 | 9 | 6 | 5 | 16 | 14 | 11 | 4 | 8 | 3 | 7 | 5 | 6 | 17 | 11 | 11 | 19 | 14 | 15 |
| TAM | 4 | 8 | 9 | 3 | 5 | 8 | 5 | 17 | 14 | 13 | 6 | 9 | 4 | 7 | 12 | 7 | 10 | 8 | 16 | 8 | 8 | 17 | 21 | 18 |
| TAN | 4 | 6 | 4 | 10 | 6 | 13 | 7 | 4 | 14 | 9 | 14 | 12 | 2 | 4 | 3 | 4 | 1 | 4 | 12 | 10 | 5 | 14 | 15 | 10 |
| TDC | ||||||||||||||||||||||||
| THL | 41 | 51 | 25 | 22 | 45 | 19 | 29 | 33 | 54 | 59 | 98 | 54 | 67 | 80 | 29 | 55 | 57 | 68 | 72 | 50 | 62 | 48 | 49 | 54 |
| THY | 4 | 6 | 9 | 3 | 9 | 5 | 9 | 6 | 5 | 11 | 13 | 12 | 5 | 9 | 7 | 7 | 4 | 4 | 15 | 11 | 11 | 23 | 17 | 17 |
| TRW | 4 | 6 | 6 | 3 | 9 | 5 | 8 | 8 | 9 | 6 | 6 | 9 | 7 | 5 | 3 | 4 | 2 | 3 | 12 | 7 | 7 | 5 | 14 | 14 |
| TSU | 6 | 10 | 10 | 3 | 6 | 12 | 6 | 5 | 7 | 6 | 10 | 16 | 2 | 5 | 3 | 7 | 2 | 4 | 15 | 9 | 6 | 16 | 22 | 18 |
| TUC | 5 | 11 | 11 | 5 | 8 | 5 | 22 | 10 | 8 | 6 | 12 | 6 | 7 | 3 | 6 | 11 | 3 | 4 | 13 | 11 | 11 | 8 | 7 | 12 |
| UPS | 5 | 9 | 5 | 5 | 7 | 10 | 13 | 10 | 12 | 12 | 21 | 21 | 22 | 19 | 15 | 20 | 9 | 12 | 19 | 16 | 12 | 19 | 7 | 11 |
| VAL | 6 | 9 | 13 | 4 | 5 | 6 | 9 | 4 | 8 | 5 | 8 | 10 | 7 | 9 | 9 | 6 | 11 | 11 | 16 | 16 | 10 | 26 | 24 | 23 |
| VIC | 14 | 26 | 15 | 7 | 24 | 17 | 29 | 14 | 8 | 9 | 17 | 7 | 10 | 6 | 9 | 8 | 7 | 10 | 19 | 8 | 16 | 21 | 15 | 14 |
| VSS | 4 | 7 | 6 | 3 | 6 | 5 | 5 | 8 | 5 | 5 | 5 | 9 | 7 | 11 | 4 | 9 | 10 | 9 | 19 | 8 | 5 | 6 | 16 | 15 |
| WNG | 7 | 6 | 9 | 5 | 9 | 8 | 13 | 9 | 9 | 10 | 14 | 19 | 15 | 15 | 13 | 14 | 11 | 10 | 24 | 19 | 13 | 32 | 18 | 19 |
| YKC | 33 | 62 | 69 | 29 | 47 | 29 | 344 | 232 | 127 | 28 | 72 | 100 | 32 | 59 | 23 | 65 | 17 | 33 | 64 | 48 | 55 | 84 | 97 | 47 |
- Date modified: