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 | 13 | 8 | 36 | 23 | 14 | 24 | 32 | 26 | 26 | 20 | 35 | 14 | 7 | 9 | 4 | 5 | 6 | 5 | 5 | 5 | 3 | 4 | 3 |
| ABG | 10 | 17 | 7 | 33 | 10 | 17 | 14 | 10 | 15 | 9 | 8 | 11 | 7 | 9 | 8 | 7 | 7 | 13 | 10 | 11 | 12 | 8 | 9 | 11 |
| ABK | 233 | 232 | 289 | 548 | 196 | 42 | 30 | 13 | 21 | 32 | 15 | 24 | 18 | 16 | 25 | 13 | 23 | 33 | 44 | 69 | 116 | 43 | 35 | 55 |
| AIA | 11 | 21 | 9 | 40 | 48 | 4 | 4 | 4 | 5 | 4 | 4 | 3 | 2 | 7 | 5 | 6 | 5 | 4 | 5 | 6 | 4 | 8 | 7 | 2 |
| AMS | 2 | 10 | 16 | 14 | 16 | 9 | 14 | 10 | 7 | 8 | 11 | 5 | 2 | 2 | 2 | 2 | 2 | 4 | 9 | 7 | 10 | 5 | 3 | 3 |
| API | 8 | 6 | 14 | 15 | 15 | 7 | 6 | 3 | 11 | 3 | 2 | 2 | 1 | 6 | 3 | 2 | 5 | 3 | 4 | 10 | 5 | 10 | 3 | 6 |
| AQU | 14 | 15 | 14 | 36 | 31 | 6 | 6 | 6 | 5 | 12 | 19 | 8 | 2 | 9 | 5 | 4 | 6 | 5 | 10 | 8 | 8 | 4 | 4 | 4 |
| ARS | ||||||||||||||||||||||||
| ASC | 4 | 3 | 18 | 20 | 5 | 5 | 6 | 10 | 8 | 11 | 10 | 4 | 5 | 3 | 8 | 11 | 6 | 8 | 4 | 3 | 2 | 3 | 3 | 3 |
| ASP | 5 | 7 | 14 | 25 | 11 | 4 | 5 | 3 | 9 | 3 | 2 | 3 | 1 | 8 | 3 | 3 | 4 | 2 | 7 | 7 | 8 | 10 | 6 | 2 |
| BDV | 20 | 19 | 9 | 44 | 32 | 4 | 12 | 7 | 5 | 5 | 20 | 5 | 4 | 7 | 4 | 4 | 10 | 7 | 14 | 10 | 11 | 4 | 4 | 5 |
| BEL | 25 | 25 | 10 | 60 | 31 | 6 | 18 | 13 | 6 | 8 | 18 | 6 | 9 | 7 | 8 | 6 | 11 | 11 | 17 | 9 | 15 | 5 | 5 | 8 |
| BFE | 33 | 22 | 28 | 80 | 32 | 9 | 15 | 11 | 12 | 10 | 14 | 10 | 12 | 8 | 10 | 8 | 13 | 17 | 23 | 14 | 21 | 6 | 8 | 11 |
| BFO | ||||||||||||||||||||||||
| BLC | 63 | 112 | 134 | 142 | 43 | 29 | 15 | 15 | 47 | 28 | 40 | 38 | 39 | 49 | 63 | 92 | 58 | 128 | 70 | 78 | 60 | 57 | 62 | 60 |
| BMT | 9 | 5 | 14 | 13 | 11 | 11 | 5 | 4 | 6 | 3 | 2 | 3 | 3 | 4 | 4 | 5 | 6 | 9 | 6 | 8 | 8 | 9 | 6 | 10 |
| BNG | 6 | 11 | 16 | 32 | 11 | 12 | 18 | 20 | 8 | 4 | 7 | 14 | 12 | 8 | 4 | 4 | 5 | 5 | 1 | 5 | 3 | 4 | 4 | 3 |
| BOU | 15 | 10 | 10 | 46 | 48 | 11 | 8 | 3 | 10 | 7 | 2 | 2 | 2 | 5 | 7 | 10 | 12 | 19 | 7 | 11 | 12 | 11 | 9 | 7 |
| BOX | 24 | 21 | 45 | 82 | 24 | 5 | 21 | 12 | 11 | 16 | 18 | 12 | 15 | 10 | 12 | 8 | 13 | 16 | 26 | 11 | 19 | 7 | 4 | 11 |
| BRW | 129 | 92 | 110 | 118 | 124 | 79 | 62 | 141 | 273 | 174 | 143 | 45 | 28 | 63 | 67 | 44 | 57 | 195 | 87 | 110 | 99 | 54 | 42 | 44 |
| BSL | 10 | 5 | 11 | 60 | 47 | 9 | 8 | 4 | 8 | 5 | 3 | 4 | 7 | 9 | 9 | 7 | 9 | 5 | 7 | 13 | 11 | 7 | 7 | 4 |
| CBB | 75 | 42 | 72 | 83 | 74 | 34 | 20 | 34 | 31 | 28 | 16 | 10 | 32 | 21 | 54 | 87 | 53 | 279 | 93 | 199 | 88 | 89 | 137 | 84 |
| CLF | 15 | 13 | 19 | 32 | 34 | 4 | 7 | 6 | 8 | 5 | 13 | 9 | 5 | 4 | 4 | 3 | 9 | 7 | 15 | 12 | 8 | 5 | 5 | 4 |
| CMO | 77 | 45 | 129 | 217 | 170 | 32 | 21 | 53 | 452 | 148 | 42 | 25 | 9 | 50 | 37 | 24 | 18 | 47 | 44 | 30 | 42 | 26 | 37 | 40 |
| CNB | 9 | 5 | 20 | 27 | 22 | 13 | 7 | 4 | 10 | 3 | 3 | 3 | 2 | 12 | 5 | 3 | 4 | 4 | 7 | 10 | 7 | 13 | 4 | 8 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 5 | 18 | 25 | 14 | 4 | 4 | 3 | 9 | 2 | 2 | 3 | 2 | 9 | 3 | 3 | 4 | 3 | 6 | 9 | 6 | 12 | 3 | 4 |
| CZT | 12 | 20 | 15 | 43 | 13 | 4 | 7 | 11 | 15 | 6 | 7 | 4 | 6 | 5 | 4 | 2 | 2 | 4 | 7 | 9 | 11 | 4 | 3 | 3 |
| DLR | 5 | 4 | 7 | 52 | 49 | 10 | 8 | 3 | 11 | 6 | 3 | 3 | 3 | 6 | 6 | 5 | 9 | 4 | 7 | 11 | 8 | 6 | 6 | 4 |
| DOU | 18 | 13 | 21 | 29 | 36 | 6 | 9 | 6 | 10 | 6 | 14 | 9 | 7 | 8 | 5 | 6 | 11 | 7 | 16 | 15 | 10 | 6 | 6 | 4 |
| DRV | 43 | 20 | 27 | 65 | 79 | 19 | 27 | 10 | 29 | 20 | 18 | 10 | 10 | 21 | 12 | 13 | 14 | 16 | 21 | 49 | 45 | 10 | 49 | 28 |
| EBR | 13 | 13 | 22 | 34 | 32 | 15 | 6 | 11 | 13 | 16 | 19 | 14 | 5 | 6 | 10 | 10 | 10 | 7 | 10 | 17 | 10 | 6 | 5 | 4 |
| ESK | 18 | 14 | 19 | 35 | 38 | 12 | 6 | 7 | 14 | 8 | 7 | 9 | 12 | 8 | 11 | 9 | 18 | 15 | 23 | 24 | 18 | 8 | 10 | 5 |
| EUA | ||||||||||||||||||||||||
| EYR | 7 | 6 | 9 | 38 | 14 | 9 | 5 | 6 | 20 | 7 | 4 | 4 | 2 | 8 | 4 | 4 | 5 | 6 | 5 | 9 | 8 | 7 | 7 | 6 |
| FCC | 167 | 102 | 188 | 326 | 129 | 62 | 55 | 57 | 166 | 79 | 64 | 41 | 19 | 33 | 31 | 25 | 33 | 71 | 32 | 82 | 48 | 40 | 45 | 50 |
| FRD | 9 | 5 | 14 | 64 | 40 | 9 | 5 | 4 | 4 | 3 | 4 | 7 | 10 | 5 | 13 | 8 | 7 | 8 | 10 | 16 | 11 | 8 | 9 | 7 |
| FRN | 12 | 8 | 12 | 33 | 43 | 12 | 10 | 4 | 14 | 8 | 3 | 2 | 2 | 5 | 2 | 6 | 5 | 3 | 9 | 6 | 10 | 9 | 6 | 4 |
| FUR | 18 | 17 | 13 | 38 | 32 | 4 | 9 | 7 | 5 | 5 | 18 | 5 | 4 | 8 | 4 | 4 | 9 | 6 | 13 | 10 | 10 | 5 | 5 | 5 |
| GCK | ||||||||||||||||||||||||
| GDH | 33 | 16 | 25 | 187 | 124 | 32 | 35 | 44 | 79 | 69 | 38 | 57 | 45 | 39 | 36 | 39 | 55 | 88 | 107 | 57 | 60 | 87 | 79 | 51 |
| GNA | 4 | 10 | 22 | 13 | 12 | 2 | 3 | 5 | 8 | 7 | 3 | 2 | 1 | 4 | 2 | 3 | 3 | 3 | 7 | 5 | 8 | 4 | 4 | 5 |
| GUA | 8 | 12 | 6 | 31 | 11 | 4 | 3 | 6 | 4 | 2 | 3 | 2 | 1 | 5 | 2 | 3 | 4 | 3 | 4 | 6 | 5 | 9 | 6 | 14 |
| GUI | 6 | 4 | 25 | 33 | 15 | 3 | 5 | 2 | 7 | 20 | 21 | 9 | 4 | 5 | 8 | 9 | 9 | 9 | 3 | 5 | 2 | 4 | 4 | 3 |
| GZH | 3 | 5 | 5 | 16 | 12 | 9 | 3 | 10 | 6 | 3 | 3 | 1 | 2 | 4 | 2 | 3 | 4 | 4 | 4 | 6 | 7 | 5 | 3 | 3 |
| HAD | 15 | 11 | 23 | 33 | 37 | 5 | 8 | 7 | 9 | 5 | 8 | 8 | 8 | 5 | 5 | 6 | 12 | 9 | 17 | 17 | 11 | 6 | 6 | 4 |
| HBK | 7 | 11 | 19 | 30 | 13 | 10 | 8 | 9 | 9 | 6 | 2 | 10 | 9 | 3 | 5 | 5 | 5 | 4 | 2 | 3 | 3 | 4 | 4 | 3 |
| HER | 4 | 10 | 18 | 29 | 20 | 7 | 9 | 6 | 9 | 7 | 3 | 7 | 9 | 2 | 7 | 4 | 5 | 4 | 3 | 3 | 4 | 4 | 3 | 4 |
| HLP | 28 | 24 | 14 | 54 | 24 | 9 | 19 | 16 | 8 | 11 | 17 | 10 | 10 | 7 | 10 | 8 | 12 | 13 | 19 | 13 | 17 | 7 | 7 | 8 |
| HON | 11 | 8 | 16 | 22 | 19 | 8 | 8 | 2 | 12 | 3 | 1 | 2 | 1 | 5 | 2 | 2 | 6 | 3 | 3 | 10 | 6 | 8 | 4 | 3 |
| HRB | 19 | 20 | 9 | 44 | 31 | 5 | 13 | 8 | 6 | 7 | 21 | 4 | 3 | 8 | 4 | 4 | 10 | 7 | 13 | 9 | 11 | 5 | 5 | 5 |
| HRN | 153 | 107 | 55 | 678 | 387 | 86 | 40 | 64 | 50 | 38 | 29 | 53 | 28 | 34 | 34 | 33 | 34 | 71 | 102 | 86 | 106 | 107 | 49 | 22 |
| HUA | 12 | 5 | 18 | 44 | 39 | 8 | 8 | 2 | 14 | 2 | 6 | 6 | 9 | 14 | 21 | 21 | 24 | 28 | 12 | 24 | 21 | 8 | 5 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 50 | 54 | 107 | 261 | 95 | 55 | 31 | 22 | 66 | 86 | 50 | 51 | 31 | 36 | 40 | 45 | 42 | 92 | 127 | 64 | 65 | 77 | 104 | 34 |
| IRT | 13 | 17 | 33 | 19 | 12 | 11 | 6 | 8 | 16 | 13 | 6 | 5 | 4 | 5 | 4 | 6 | 8 | 9 | 7 | 8 | 9 | 9 | 5 | 7 |
| IZN | ||||||||||||||||||||||||
| KAK | 6 | 2 | 7 | 17 | 11 | 6 | 3 | 9 | 5 | 3 | 4 | 2 | 2 | 5 | 2 | 4 | 3 | 5 | 3 | 7 | 2 | 6 | 6 | 7 |
| KDU | 3 | 3 | 12 | 26 | 11 | 3 | 6 | 10 | 8 | 2 | 2 | 3 | 1 | 7 | 3 | 3 | 4 | 2 | 6 | 7 | 7 | 11 | 5 | 1 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 3 | 9 | 12 | 13 | 8 | 3 | 10 | 6 | 2 | 4 | 2 | 2 | 5 | 2 | 4 | 4 | 5 | 4 | 7 | 5 | 7 | 6 | 7 |
| KOU | 9 | 3 | 17 | 32 | 17 | 8 | 6 | 2 | 6 | 3 | 5 | 6 | 7 | 8 | 7 | 6 | 6 | 8 | 11 | 8 | 7 | 5 | 2 | 2 |
| LER | 21 | 11 | 52 | 103 | 33 | 10 | 7 | 8 | 9 | 11 | 4 | 7 | 14 | 7 | 13 | 8 | 16 | 14 | 24 | 21 | 23 | 8 | 8 | 7 |
| LRM | 3 | 10 | 13 | 14 | 10 | 5 | 5 | 7 | 8 | 7 | 1 | 4 | 2 | 5 | 3 | 4 | 3 | 3 | 8 | 6 | 8 | 5 | 4 | 7 |
| LVV | 21 | 23 | 5 | 41 | 29 | 6 | 19 | 11 | 9 | 8 | 18 | 5 | 7 | 7 | 6 | 7 | 12 | 9 | 15 | 10 | 13 | 5 | 5 | 7 |
| LYC | ||||||||||||||||||||||||
| LZH | 10 | 13 | 16 | 19 | 9 | 13 | 7 | 4 | 4 | 3 | 1 | 3 | 3 | 4 | 3 | 5 | 6 | 8 | 6 | 8 | 9 | 6 | 3 | 6 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 5 | 4 | 23 | 31 | 7 | 4 | 6 | 14 | 14 | 14 | 7 | 5 | 6 | 7 | 6 | 6 | 6 | 6 | 8 | 5 | 2 | 4 | 4 | 3 |
| MCQ | 40 | 29 | 31 | 68 | 63 | 16 | 16 | 30 | 84 | 21 | 9 | 13 | 6 | 34 | 40 | 8 | 5 | 11 | 8 | 13 | 19 | 12 | 12 | 11 |
| MEA | 58 | 28 | 113 | 66 | 161 | 14 | 25 | 40 | 56 | 51 | 12 | 9 | 4 | 11 | 14 | 15 | 29 | 19 | 16 | 24 | 32 | 23 | 22 | 33 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 8 | 4 | 8 | 24 | 23 | 8 | 7 | 5 | 9 | 5 | 5 | 2 | 3 | 5 | 4 | 6 | 4 | 9 | 4 | 8 | 3 | 7 | 10 | 6 |
| NAQ | 150 | 135 | 295 | 382 | 259 | 141 | 46 | 36 | 46 | 42 | 17 | 21 | 10 | 12 | 10 | 17 | 21 | 37 | 70 | 92 | 36 | 58 | 53 | 43 |
| NCK | 17 | 17 | 11 | 37 | 27 | 4 | 10 | 5 | 5 | 6 | 19 | 4 | 3 | 8 | 4 | 4 | 9 | 6 | 12 | 9 | 10 | 4 | 4 | 5 |
| NEW | 33 | 19 | 24 | 55 | 43 | 15 | 8 | 7 | 13 | 6 | 2 | 4 | 2 | 5 | 6 | 13 | 23 | 8 | 12 | 16 | 19 | 19 | 12 | 16 |
| NGK | 27 | 22 | 9 | 53 | 34 | 7 | 16 | 9 | 7 | 7 | 15 | 7 | 7 | 6 | 7 | 6 | 11 | 10 | 19 | 13 | 16 | 6 | 6 | 7 |
| NUR | 37 | 27 | 48 | 112 | 20 | 4 | 18 | 9 | 13 | 12 | 16 | 12 | 16 | 8 | 13 | 8 | 12 | 18 | 24 | 12 | 23 | 6 | 4 | 11 |
| NVS | 14 | 9 | 33 | 22 | 13 | 11 | 4 | 9 | 16 | 14 | 11 | 4 | 5 | 6 | 6 | 6 | 8 | 9 | 8 | 9 | 10 | 8 | 3 | 4 |
| OTT | 12 | 11 | 13 | 43 | 39 | 8 | 4 | 5 | 8 | 8 | 4 | 8 | 12 | 5 | 8 | 7 | 11 | 19 | 21 | 30 | 17 | 12 | 14 | 12 |
| PAF | 7 | 7 | 48 | 67 | 33 | 10 | 8 | 12 | 9 | 8 | 10 | 6 | 6 | 3 | 3 | 3 | 4 | 5 | 24 | 19 | 22 | 7 | 4 | 5 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 4 | 7 | 4 | 24 | 15 | 11 | 4 | 12 | 8 | 6 | 2 | 2 | 2 | 4 | 3 | 4 | 5 | 6 | 6 | 7 | 9 | 6 | 4 | 3 |
| PPT | 10 | 5 | 11 | 13 | 21 | 7 | 9 | 2 | 14 | 4 | 1 | 1 | 1 | 5 | 2 | 2 | 6 | 3 | 6 | 12 | 2 | 4 | 7 | 5 |
| PST | ||||||||||||||||||||||||
| QSB | 14 | 21 | 13 | 43 | 37 | 5 | 6 | 7 | 10 | 15 | 13 | 5 | 2 | 8 | 8 | 5 | 9 | 6 | 10 | 8 | 10 | 6 | 5 | 4 |
| RES | 41 | 82 | 24 | 67 | 73 | 21 | 21 | 25 | 37 | 23 | 20 | 22 | 24 | 61 | 26 | 112 | 254 | 163 | 158 | 92 | 109 | 53 | 70 | 42 |
| SBA | 49 | 39 | 30 | 53 | 71 | 13 | 32 | 24 | 81 | 28 | 14 | 12 | 19 | 17 | 15 | 18 | 27 | 54 | 29 | 32 | 18 | 29 | 27 | 42 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 44 | 17 | 50 | 81 | 33 | 10 | 6 | 16 | 16 | 20 | 3 | 4 | 3 | 7 | 6 | 10 | 12 | 13 | 18 | 10 | 12 | 19 | 12 | 19 |
| SJG | 6 | 2 | 11 | 31 | 18 | 9 | 7 | 2 | 6 | 1 | 2 | 6 | 5 | 7 | 5 | 4 | 4 | 6 | 12 | 11 | 5 | 4 | 4 | 4 |
| SOD | 278 | 208 | 445 | 530 | 101 | 24 | 19 | 11 | 19 | 25 | 12 | 20 | 17 | 13 | 21 | 11 | 18 | 22 | 36 | 46 | 64 | 14 | 19 | 17 |
| SPT | 11 | 10 | 24 | 34 | 31 | 3 | 2 | 9 | 7 | 16 | 23 | 7 | 2 | 7 | 8 | 6 | 7 | 4 | 9 | 9 | 5 | 5 | 5 | 3 |
| STJ | 8 | 10 | 12 | 44 | 41 | 6 | 2 | 5 | 7 | 7 | 9 | 8 | 7 | 4 | 4 | 4 | 9 | 14 | 23 | 27 | 16 | 13 | 10 | 8 |
| SUA | 14 | 19 | 21 | 38 | 24 | 6 | 7 | 8 | 9 | 11 | 17 | 4 | 3 | 7 | 6 | 4 | 9 | 6 | 11 | 8 | 11 | 4 | 5 | 5 |
| TAM | 7 | 10 | 22 | 33 | 17 | 4 | 8 | 15 | 14 | 14 | 8 | 2 | 7 | 10 | 10 | 11 | 8 | 5 | 2 | 5 | 3 | 4 | 5 | 3 |
| TAN | 7 | 12 | 10 | 34 | 15 | 4 | 6 | 7 | 9 | 5 | 2 | 3 | 5 | 2 | 4 | 3 | 4 | 5 | 3 | 3 | 3 | 3 | 3 | 3 |
| TDC | ||||||||||||||||||||||||
| THL | 49 | 20 | 15 | 49 | 112 | 24 | 24 | 15 | 60 | 43 | 20 | 16 | 39 | 53 | 93 | 111 | 82 | 61 | 57 | 65 | 40 | 69 | 85 | 51 |
| THY | 19 | 19 | 12 | 40 | 30 | 4 | 11 | 6 | 6 | 8 | 20 | 4 | 3 | 9 | 4 | 5 | 10 | 6 | 13 | 10 | 11 | 5 | 5 | 5 |
| TRW | 8 | 9 | 15 | 40 | 33 | 8 | 6 | 3 | 8 | 3 | 5 | 5 | 6 | 7 | 5 | 4 | 5 | 6 | 4 | 8 | 2 | 2 | 4 | 3 |
| TSU | 6 | 10 | 22 | 31 | 14 | 10 | 11 | 4 | 4 | 7 | 4 | 8 | 6 | 4 | 3 | 3 | 7 | 4 | 2 | 4 | 4 | 4 | 4 | 4 |
| TUC | 9 | 6 | 9 | 42 | 47 | 10 | 9 | 4 | 13 | 7 | 3 | 3 | 1 | 4 | 3 | 3 | 9 | 8 | 10 | 10 | 6 | 7 | 6 | 5 |
| UPS | 35 | 23 | 43 | 98 | 23 | 6 | 14 | 7 | 14 | 11 | 12 | 9 | 15 | 7 | 12 | 7 | 12 | 15 | 19 | 11 | 20 | 6 | 6 | 10 |
| VAL | 9 | 9 | 25 | 26 | 39 | 5 | 4 | 6 | 9 | 6 | 7 | 7 | 6 | 5 | 5 | 5 | 12 | 7 | 17 | 17 | 10 | 6 | 5 | 3 |
| VIC | 29 | 14 | 18 | 53 | 37 | 14 | 8 | 6 | 15 | 7 | 3 | 3 | 3 | 3 | 4 | 12 | 17 | 6 | 13 | 9 | 17 | 16 | 9 | 13 |
| VSS | 8 | 7 | 21 | 32 | 15 | 7 | 6 | 3 | 9 | 8 | 13 | 12 | 7 | 4 | 4 | 9 | 9 | 14 | 6 | 5 | 4 | 5 | 4 | 3 |
| WNG | 30 | 22 | 15 | 67 | 34 | 9 | 15 | 11 | 10 | 8 | 12 | 8 | 9 | 8 | 9 | 7 | 12 | 15 | 24 | 15 | 19 | 6 | 7 | 9 |
| YKC | 106 | 108 | 230 | 157 | 132 | 56 | 58 | 31 | 259 | 197 | 47 | 39 | 31 | 34 | 35 | 36 | 38 | 64 | 37 | 44 | 45 | 50 | 34 | 71 |
- Date modified: