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 | 8 | 4 | 8 | 12 | 11 | 42 | 51 | 26 | 9 | 19 | 31 | 27 | 18 | 5 | 8 | 12 | 2 | 4 | 13 | 3 | 6 | 11 | 11 | 3 |
| ABG | 6 | 8 | 4 | 7 | 12 | 14 | 10 | 6 | 17 | 5 | 5 | 8 | 12 | 10 | 4 | 5 | 4 | 6 | 11 | 7 | 4 | 10 | 11 | 5 |
| ABK | 169 | 36 | 39 | 31 | 67 | 52 | 18 | 16 | 8 | 21 | 33 | 29 | 22 | 35 | 40 | 11 | 20 | 27 | 57 | 79 | 109 | 101 | 142 | 134 |
| AIA | 8 | 10 | 11 | 10 | 29 | 21 | 15 | 4 | 2 | 4 | 7 | 4 | 7 | 14 | 17 | 7 | 9 | 8 | 4 | 8 | 5 | 5 | 6 | 10 |
| AMS | 4 | 6 | 6 | 8 | 16 | 3 | 2 | 3 | 2 | 5 | 7 | 6 | 5 | 9 | 6 | 4 | 6 | 2 | 6 | 6 | 7 | 6 | 8 | 5 |
| API | 3 | 13 | 15 | 16 | 5 | 2 | 6 | 2 | 2 | 3 | 5 | 4 | 3 | 8 | 5 | 3 | 3 | 6 | 2 | 9 | 3 | 10 | 13 | 4 |
| AQU | 13 | 4 | 4 | 4 | 2 | 7 | 2 | 4 | 8 | 9 | 15 | 10 | 6 | 12 | 5 | 5 | 2 | 5 | 9 | 3 | 6 | 11 | 11 | 5 |
| ARS | ||||||||||||||||||||||||
| ASC | 5 | 3 | 3 | 2 | 10 | 7 | 4 | 1 | 2 | 6 | 10 | 10 | 4 | 3 | 3 | 5 | 8 | 13 | 16 | 3 | 4 | 7 | 9 | 4 |
| ASP | 10 | 8 | 5 | 11 | 18 | 7 | 1 | 2 | 2 | 5 | 6 | 5 | 6 | 10 | 17 | 8 | 2 | 5 | 7 | 6 | 7 | 4 | 15 | 12 |
| BDV | 14 | 5 | 5 | 4 | 4 | 9 | 3 | 7 | 5 | 7 | 11 | 7 | 5 | 7 | 7 | 4 | 4 | 7 | 11 | 4 | 8 | 13 | 9 | 7 |
| BEL | 13 | 6 | 7 | 6 | 5 | 10 | 5 | 6 | 5 | 7 | 12 | 14 | 6 | 6 | 9 | 6 | 6 | 11 | 16 | 7 | 8 | 15 | 7 | 7 |
| BFE | 16 | 9 | 7 | 7 | 7 | 12 | 5 | 7 | 11 | 11 | 13 | 17 | 13 | 8 | 14 | 8 | 9 | 14 | 19 | 7 | 11 | 21 | 8 | 7 |
| BFO | ||||||||||||||||||||||||
| BLC | 37 | 40 | 36 | 18 | 508 | 442 | 56 | 17 | 38 | 52 | 58 | 29 | 99 | 62 | 88 | 55 | 62 | 70 | 42 | 60 | 47 | 21 | 126 | 39 |
| BMT | 5 | 6 | 5 | 4 | 13 | 23 | 13 | 4 | 13 | 9 | 8 | 7 | 4 | 6 | 9 | 8 | 2 | 6 | 13 | 4 | 6 | 6 | 10 | 8 |
| BNG | 9 | 3 | 2 | 3 | 5 | 10 | 6 | 17 | 16 | 7 | 8 | 11 | 11 | 13 | 8 | 7 | 3 | 4 | 14 | 3 | 5 | 10 | 11 | 4 |
| BOU | 6 | 5 | 8 | 5 | 26 | 29 | 7 | 2 | 7 | 4 | 8 | 5 | 9 | 4 | 14 | 6 | 7 | 8 | 6 | 7 | 13 | 3 | 13 | 8 |
| BOX | 8 | 9 | 7 | 10 | 12 | 12 | 3 | 9 | 9 | 15 | 24 | 22 | 11 | 11 | 11 | 10 | 8 | 10 | 19 | 13 | 9 | 7 | 10 | 5 |
| BRW | 50 | 56 | 122 | 117 | 69 | 77 | 89 | 44 | 49 | 80 | 44 | 21 | 38 | 366 | 119 | 239 | 130 | 145 | 243 | 116 | 142 | 49 | 50 | 30 |
| BSL | 6 | 7 | 9 | 5 | 26 | 11 | 12 | 4 | 4 | 2 | 7 | 4 | 16 | 6 | 6 | 15 | 11 | 7 | 11 | 7 | 14 | 4 | 10 | 5 |
| CBB | 42 | 47 | 37 | 14 | 42 | 64 | 22 | 9 | 32 | 23 | 37 | 33 | 66 | 40 | 78 | 95 | 79 | 91 | 88 | 98 | 209 | 28 | 129 | 96 |
| CLF | 17 | 5 | 5 | 4 | 3 | 10 | 4 | 3 | 6 | 5 | 9 | 9 | 4 | 7 | 5 | 4 | 6 | 7 | 13 | 4 | 9 | 12 | 12 | 6 |
| CMO | 62 | 75 | 103 | 63 | 90 | 82 | 41 | 25 | 48 | 33 | 54 | 39 | 103 | 172 | 127 | 135 | 46 | 28 | 31 | 24 | 33 | 22 | 33 | 20 |
| CNB | 9 | 4 | 7 | 6 | 15 | 5 | 9 | 3 | 3 | 5 | 7 | 5 | 6 | 21 | 18 | 9 | 4 | 4 | 10 | 6 | 11 | 3 | 5 | 3 |
| CSY | ||||||||||||||||||||||||
| CTA | 4 | 7 | 6 | 17 | 20 | 6 | 5 | 2 | 2 | 4 | 6 | 5 | 6 | 14 | 15 | 7 | 2 | 4 | 7 | 5 | 5 | 10 | 16 | 7 |
| CZT | 13 | 5 | 4 | 5 | 4 | 7 | 9 | 13 | 10 | 6 | 9 | 9 | 4 | 5 | 4 | 4 | 5 | 4 | 11 | 5 | 5 | 19 | 8 | 6 |
| DLR | 6 | 5 | 7 | 4 | 23 | 16 | 10 | 3 | 5 | 3 | 8 | 5 | 10 | 8 | 5 | 12 | 12 | 5 | 11 | 4 | 12 | 4 | 10 | 4 |
| DOU | 17 | 7 | 7 | 5 | 4 | 11 | 5 | 6 | 6 | 5 | 11 | 10 | 5 | 8 | 6 | 5 | 7 | 8 | 13 | 5 | 10 | 13 | 13 | 7 |
| DRV | 88 | 162 | 130 | 94 | 58 | 84 | 17 | 9 | 17 | 13 | 15 | 10 | 12 | 73 | 36 | 21 | 23 | 36 | 41 | 31 | 61 | 21 | 94 | 53 |
| EBR | 15 | 4 | 5 | 5 | 12 | 18 | 9 | 13 | 14 | 9 | 8 | 18 | 6 | 12 | 8 | 11 | 8 | 9 | 13 | 14 | 8 | 11 | 13 | 5 |
| ESK | 21 | 9 | 9 | 8 | 10 | 18 | 6 | 3 | 11 | 9 | 14 | 11 | 9 | 9 | 16 | 12 | 13 | 17 | 21 | 6 | 14 | 13 | 13 | 9 |
| EUA | ||||||||||||||||||||||||
| EYR | 10 | 9 | 15 | 8 | 14 | 8 | 12 | 3 | 9 | 6 | 8 | 5 | 5 | 18 | 15 | 11 | 5 | 6 | 10 | 7 | 13 | 4 | 7 | 3 |
| FCC | 33 | 51 | 53 | 254 | 353 | 340 | 104 | 77 | 94 | 89 | 62 | 39 | 39 | 44 | 32 | 23 | 22 | 28 | 15 | 48 | 64 | 22 | 122 | 52 |
| FRD | 5 | 8 | 10 | 8 | 27 | 8 | 11 | 5 | 2 | 3 | 8 | 4 | 14 | 9 | 5 | 13 | 13 | 7 | 9 | 10 | 16 | 5 | 11 | 6 |
| FRN | 6 | 6 | 6 | 4 | 22 | 21 | 4 | 2 | 8 | 3 | 7 | 6 | 6 | 5 | 11 | 4 | 4 | 5 | 4 | 7 | 11 | 3 | 11 | 5 |
| FUR | 15 | 5 | 5 | 4 | 3 | 10 | 4 | 5 | 6 | 7 | 12 | 7 | 5 | 8 | 6 | 4 | 5 | 7 | 11 | 4 | 8 | 13 | 10 | 6 |
| GCK | ||||||||||||||||||||||||
| GDH | 50 | 100 | 31 | 20 | 18 | 24 | 31 | 22 | 17 | 57 | 41 | 32 | 23 | 52 | 52 | 57 | 55 | 117 | 48 | 34 | 94 | 31 | 37 | 51 |
| GNA | 3 | 4 | 7 | 6 | 8 | 6 | 2 | 1 | 2 | 5 | 5 | 4 | 6 | 7 | 12 | 8 | 2 | 7 | 7 | 5 | 5 | 2 | 8 | 2 |
| GUA | 12 | 8 | 10 | 15 | 10 | 3 | 4 | 3 | 5 | 4 | 5 | 4 | 4 | 7 | 9 | 3 | 1 | 4 | 7 | 3 | 5 | 1 | 21 | 19 |
| GUI | 11 | 4 | 5 | 3 | 6 | 6 | 3 | 5 | 6 | 11 | 7 | 3 | 5 | 5 | 6 | 9 | 4 | 7 | 10 | 2 | 5 | 8 | 12 | 3 |
| GZH | 8 | 13 | 9 | 4 | 6 | 4 | 3 | 3 | 11 | 7 | 5 | 4 | 4 | 4 | 7 | 5 | 1 | 5 | 10 | 4 | 4 | 4 | 9 | 8 |
| HAD | 19 | 6 | 7 | 5 | 5 | 14 | 5 | 2 | 7 | 6 | 8 | 6 | 4 | 4 | 9 | 6 | 10 | 11 | 16 | 5 | 11 | 11 | 11 | 7 |
| HBK | 11 | 6 | 4 | 3 | 9 | 11 | 7 | 7 | 5 | 7 | 5 | 4 | 7 | 9 | 6 | 2 | 4 | 3 | 12 | 3 | 7 | 12 | 11 | 5 |
| HER | 10 | 5 | 4 | 2 | 7 | 10 | 2 | 2 | 6 | 9 | 8 | 7 | 4 | 7 | 4 | 2 | 3 | 2 | 10 | 1 | 4 | 10 | 10 | 4 |
| HLP | 13 | 9 | 5 | 6 | 7 | 10 | 4 | 7 | 8 | 9 | 15 | 17 | 7 | 7 | 11 | 9 | 8 | 14 | 16 | 7 | 10 | 20 | 11 | 7 |
| HON | 3 | 6 | 7 | 9 | 5 | 4 | 6 | 2 | 3 | 3 | 5 | 5 | 3 | 8 | 5 | 4 | 3 | 4 | 9 | 2 | 9 | 8 | 15 | 5 |
| HRB | 14 | 6 | 5 | 5 | 4 | 8 | 4 | 6 | 4 | 11 | 10 | 7 | 6 | 8 | 6 | 5 | 4 | 8 | 11 | 4 | 7 | 13 | 9 | 6 |
| HRN | 60 | 57 | 46 | 72 | 44 | 94 | 46 | 46 | 43 | 33 | 105 | 79 | 58 | 43 | 71 | 21 | 50 | 48 | 42 | 41 | 69 | 30 | 32 | 14 |
| HUA | 3 | 7 | 5 | 4 | 24 | 5 | 11 | 5 | 3 | 6 | 3 | 7 | 21 | 33 | 27 | 27 | 16 | 41 | 71 | 10 | 20 | 8 | 12 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 42 | 90 | 42 | 39 | 258 | 277 | 143 | 19 | 40 | 41 | 79 | 43 | 37 | 43 | 39 | 58 | 116 | 193 | 159 | 118 | 79 | 36 | 57 | 88 |
| IRT | 7 | 8 | 10 | 15 | 6 | 15 | 30 | 6 | 5 | 7 | 10 | 8 | 7 | 6 | 6 | 10 | 4 | 7 | 14 | 6 | 7 | 3 | 7 | 3 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 6 | 10 | 6 | 3 | 6 | 4 | 7 | 8 | 3 | 6 | 5 | 4 | 5 | 8 | 6 | 1 | 3 | 8 | 4 | 5 | 3 | 5 | 8 |
| KDU | 9 | 8 | 5 | 15 | 21 | 6 | 2 | 2 | 1 | 4 | 5 | 4 | 5 | 7 | 12 | 5 | 2 | 5 | 7 | 5 | 4 | 6 | 15 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 5 | 7 | 5 | 4 | 9 | 4 | 5 | 11 | 5 | 5 | 6 | 4 | 4 | 9 | 7 | 1 | 4 | 9 | 4 | 6 | 4 | 4 | 8 |
| KOU | 3 | 4 | 4 | 3 | 16 | 5 | 7 | 2 | 1 | 7 | 12 | 14 | 16 | 8 | 8 | 11 | 5 | 10 | 17 | 7 | 6 | 3 | 8 | 4 |
| LER | 14 | 8 | 6 | 8 | 21 | 23 | 9 | 6 | 12 | 10 | 13 | 8 | 6 | 14 | 19 | 11 | 12 | 16 | 14 | 7 | 14 | 13 | 8 | 10 |
| LRM | 6 | 5 | 4 | 6 | 10 | 4 | 3 | 6 | 6 | 6 | 6 | 5 | 7 | 8 | 14 | 8 | 2 | 6 | 9 | 6 | 4 | 2 | 11 | 6 |
| LVV | 13 | 6 | 6 | 7 | 6 | 8 | 7 | 5 | 4 | 7 | 11 | 11 | 7 | 8 | 8 | 8 | 4 | 8 | 13 | 5 | 7 | 13 | 8 | 6 |
| LYC | ||||||||||||||||||||||||
| LZH | 3 | 4 | 4 | 6 | 6 | 21 | 18 | 2 | 10 | 9 | 9 | 6 | 4 | 5 | 7 | 6 | 2 | 6 | 12 | 4 | 5 | 3 | 11 | 5 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 8 | 5 | 3 | 3 | 8 | 6 | 5 | 3 | 15 | 22 | 20 | 6 | 11 | 18 | 13 | 8 | 4 | 5 | 14 | 3 | 5 | 6 | 10 | 4 |
| MCQ | 24 | 24 | 48 | 38 | 53 | 33 | 27 | 13 | 22 | 19 | 16 | 14 | 38 | 109 | 117 | 112 | 55 | 24 | 13 | 11 | 16 | 10 | 12 | 8 |
| MEA | 20 | 36 | 31 | 14 | 51 | 35 | 20 | 10 | 15 | 12 | 12 | 8 | 23 | 13 | 13 | 12 | 7 | 16 | 23 | 9 | 14 | 10 | 38 | 19 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 4 | 8 | 16 | 8 | 5 | 5 | 4 | 3 | 8 | 4 | 7 | 6 | 5 | 5 | 12 | 11 | 2 | 4 | 11 | 6 | 6 | 3 | 6 | 14 |
| NAQ | 45 | 88 | 48 | 92 | 237 | 205 | 126 | 19 | 18 | 23 | 19 | 22 | 14 | 18 | 29 | 39 | 46 | 66 | 39 | 39 | 61 | 42 | 44 | 121 |
| NCK | 13 | 5 | 5 | 4 | 3 | 7 | 4 | 5 | 4 | 11 | 11 | 7 | 6 | 7 | 5 | 4 | 4 | 7 | 10 | 4 | 7 | 12 | 9 | 6 |
| NEW | 13 | 13 | 15 | 10 | 38 | 32 | 12 | 5 | 12 | 5 | 9 | 8 | 14 | 6 | 10 | 8 | 8 | 15 | 17 | 6 | 9 | 5 | 24 | 11 |
| NGK | 16 | 7 | 6 | 6 | 5 | 11 | 4 | 7 | 6 | 6 | 11 | 12 | 4 | 6 | 8 | 7 | 6 | 10 | 15 | 6 | 10 | 17 | 7 | 7 |
| NUR | 9 | 9 | 5 | 10 | 12 | 15 | 3 | 13 | 13 | 12 | 21 | 21 | 13 | 14 | 15 | 8 | 8 | 12 | 18 | 12 | 9 | 14 | 11 | 5 |
| NVS | 6 | 5 | 9 | 2 | 11 | 10 | 16 | 11 | 7 | 7 | 13 | 9 | 8 | 7 | 7 | 6 | 6 | 4 | 12 | 7 | 7 | 6 | 8 | 2 |
| OTT | 8 | 11 | 11 | 11 | 49 | 31 | 6 | 5 | 5 | 6 | 10 | 8 | 14 | 11 | 11 | 4 | 19 | 22 | 13 | 14 | 24 | 8 | 15 | 10 |
| PAF | 6 | 6 | 6 | 9 | 14 | 10 | 9 | 7 | 4 | 7 | 10 | 9 | 6 | 10 | 6 | 6 | 11 | 6 | 16 | 15 | 10 | 13 | 7 | 9 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 8 | 14 | 13 | 5 | 6 | 4 | 2 | 6 | 10 | 6 | 7 | 5 | 5 | 4 | 7 | 6 | 1 | 5 | 11 | 5 | 5 | 3 | 12 | 8 |
| PPT | 8 | 6 | 4 | 4 | 7 | 6 | 3 | 1 | 3 | 2 | 4 | 3 | 2 | 8 | 3 | 5 | 8 | 11 | 5 | 11 | 4 | 2 | 7 | 9 |
| PST | ||||||||||||||||||||||||
| QSB | 12 | 7 | 5 | 7 | 4 | 7 | 4 | 7 | 14 | 20 | 7 | 5 | 11 | 19 | 7 | 4 | 6 | 5 | 14 | 5 | 6 | 11 | 13 | 6 |
| RES | 43 | 53 | 49 | 40 | 40 | 54 | 26 | 14 | 32 | 27 | 38 | 37 | 55 | 38 | 29 | 42 | 54 | 135 | 87 | 55 | 153 | 59 | 132 | 53 |
| SBA | 33 | 74 | 61 | 27 | 53 | 52 | 49 | 9 | 33 | 23 | 21 | 24 | 14 | 47 | 26 | 30 | 44 | 50 | 48 | 24 | 28 | 16 | 72 | 35 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 17 | 32 | 29 | 10 | 41 | 24 | 22 | 6 | 17 | 10 | 10 | 7 | 16 | 7 | 10 | 6 | 6 | 16 | 21 | 7 | 8 | 9 | 21 | 10 |
| SJG | 2 | 4 | 4 | 2 | 15 | 3 | 9 | 2 | 1 | 2 | 3 | 9 | 9 | 10 | 4 | 2 | 2 | 6 | 15 | 9 | 12 | 3 | 7 | 3 |
| SOD | 102 | 24 | 22 | 21 | 49 | 35 | 10 | 16 | 10 | 20 | 32 | 29 | 20 | 29 | 26 | 11 | 12 | 20 | 35 | 58 | 80 | 50 | 70 | 63 |
| SPT | 15 | 5 | 5 | 4 | 3 | 7 | 2 | 2 | 6 | 6 | 5 | 16 | 8 | 10 | 6 | 4 | 3 | 6 | 11 | 5 | 7 | 10 | 13 | 4 |
| STJ | 5 | 9 | 7 | 7 | 14 | 13 | 8 | 2 | 3 | 8 | 8 | 14 | 12 | 11 | 5 | 9 | 15 | 21 | 10 | 9 | 20 | 8 | 11 | 5 |
| SUA | ||||||||||||||||||||||||
| TAM | 11 | 5 | 4 | 3 | 5 | 5 | 1 | 14 | 20 | 19 | 4 | 8 | 9 | 11 | 13 | 13 | 4 | 5 | 11 | 2 | 5 | 10 | 12 | 4 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 28 | 32 | 33 | 39 | 43 | 51 | 32 | 9 | 25 | 38 | 49 | 49 | 41 | 54 | 35 | 55 | 38 | 61 | 69 | 28 | 92 | 24 | 61 | 42 |
| THY | 14 | 6 | 5 | 5 | 4 | 8 | 4 | 6 | 3 | 13 | 12 | 7 | 8 | 9 | 6 | 5 | 4 | 8 | 11 | 4 | 7 | 14 | 10 | 6 |
| TRW | 4 | 6 | 8 | 6 | 23 | 8 | 12 | 4 | 1 | 4 | 4 | 5 | 6 | 8 | 10 | 4 | 12 | 4 | 11 | 4 | 3 | 4 | 8 | 9 |
| TSU | 11 | 5 | 4 | 3 | 8 | 13 | 4 | 6 | 5 | 6 | 5 | 6 | 6 | 9 | 6 | 1 | 5 | 4 | 12 | 3 | 6 | 11 | 11 | 5 |
| TUC | 5 | 5 | 6 | 4 | 20 | 20 | 6 | 2 | 7 | 3 | 8 | 6 | 6 | 2 | 11 | 5 | 9 | 5 | 6 | 4 | 11 | 2 | 11 | 5 |
| UPS | 9 | 8 | 4 | 8 | 10 | 13 | 4 | 9 | 12 | 14 | 15 | 16 | 11 | 13 | 15 | 7 | 9 | 12 | 15 | 9 | 11 | 21 | 14 | 6 |
| VAL | 18 | 5 | 6 | 4 | 6 | 11 | 6 | 2 | 5 | 5 | 9 | 9 | 4 | 3 | 10 | 8 | 10 | 11 | 15 | 4 | 10 | 9 | 13 | 5 |
| VIC | 13 | 13 | 13 | 10 | 29 | 28 | 15 | 4 | 13 | 5 | 8 | 8 | 12 | 7 | 10 | 5 | 8 | 14 | 12 | 6 | 5 | 4 | 20 | 9 |
| VSS | 4 | 5 | 6 | 3 | 18 | 6 | 8 | 4 | 4 | 6 | 5 | 11 | 15 | 16 | 8 | 15 | 11 | 18 | 23 | 2 | 3 | 5 | 9 | 7 |
| WNG | 17 | 8 | 7 | 6 | 7 | 15 | 5 | 8 | 11 | 10 | 11 | 15 | 8 | 7 | 12 | 8 | 8 | 13 | 19 | 7 | 11 | 19 | 8 | 8 |
| YKC | 54 | 86 | 63 | 76 | 238 | 200 | 111 | 28 | 171 | 86 | 42 | 57 | 81 | 122 | 85 | 72 | 52 | 22 | 33 | 11 | 19 | 24 | 112 | 34 |
- Date modified: