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 | 4 | 4 | 5 | 7 | 10 | 11 | 4 | 3 | 3 | 6 | 7 | 3 | 2 | 6 | 4 | 7 | 2 | 5 | 4 | 2 | 2 | 4 | 5 | 2 |
| ABG | 6 | 8 | 4 | 4 | 8 | 13 | 13 | 4 | 1 | 4 | 11 | 5 | 3 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 2 | 2 |
| ABK | 49 | 23 | 28 | 21 | 21 | 17 | 11 | 13 | 10 | 16 | 19 | 14 | 9 | 7 | 11 | 8 | 18 | 12 | 14 | 47 | 85 | 85 | 100 | 70 |
| AIA | 24 | 5 | 4 | 7 | 15 | 7 | 12 | 5 | 3 | 5 | 8 | 5 | 10 | 6 | 3 | 13 | 12 | 12 | 6 | 10 | 7 | 7 | 12 | 8 |
| AMS | 13 | 8 | 9 | 7 | 8 | 4 | 8 | 13 | 9 | 2 | 5 | 9 | 3 | 6 | 7 | 5 | 6 | 5 | 9 | 8 | 3 | 10 | 3 | 3 |
| API | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 |
| AQU | 8 | 6 | 4 | 4 | 8 | 6 | 12 | 4 | 11 | 20 | 16 | 8 | 4 | 5 | 6 | 6 | 4 | 5 | 4 | 3 | 6 | 6 | 6 | 3 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 2 | 1 | 3 | 3 | 1 | 2 | 3 | 11 | 9 | 3 | 3 | 2 | 3 | 7 | 11 | 4 | 3 | 3 | 3 | 1 | 2 | 3 | 1 |
| ASP | 7 | 11 | 12 | 6 | 4 | 3 | 4 | 1 | 5 | 1 | 4 | 3 | 2 | 9 | 7 | 3 | 2 | 5 | 6 | 4 | 4 | 3 | 6 | 3 |
| BDV | 11 | 8 | 7 | 5 | 8 | 6 | 13 | 2 | 8 | 11 | 21 | 15 | 6 | 5 | 8 | 8 | 3 | 8 | 5 | 5 | 9 | 8 | 7 | 4 |
| BEL | 15 | 8 | 7 | 7 | 8 | 6 | 11 | 3 | 6 | 16 | 20 | 11 | 5 | 4 | 11 | 7 | 4 | 8 | 6 | 6 | 10 | 11 | 8 | 5 |
| BFE | 15 | 9 | 10 | 9 | 11 | 6 | 13 | 3 | 5 | 8 | 20 | 16 | 10 | 5 | 10 | 7 | 4 | 10 | 5 | 9 | 12 | 11 | 12 | 5 |
| BFO | ||||||||||||||||||||||||
| BLC | 40 | 48 | 29 | 47 | 282 | 278 | 45 | 17 | 38 | 33 | 33 | 13 | 30 | 38 | 50 | 49 | 39 | 83 | 72 | 76 | 97 | 22 | 51 | 18 |
| BMT | 1 | 1 | 1 | 3 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 3 | 8 | 9 | 10 | 39 | 28 | 18 | 8 | 8 | 7 | 6 | 4 | 7 | 8 | 12 | 9 | 11 | 14 | 15 | 6 | 8 | 6 | 6 | 10 |
| BOX | 22 | 13 | 9 | 7 | 10 | 3 | 7 | 8 | 16 | 19 | 12 | 4 | 5 | 10 | 10 | 9 | 6 | 7 | 5 | 6 | 13 | 30 | 12 | 6 |
| BRW | 61 | 57 | 33 | 55 | 52 | 41 | 31 | 20 | 53 | 46 | 67 | 21 | 32 | 228 | 84 | 129 | 108 | 81 | 155 | 64 | 59 | 26 | 69 | 30 |
| BSL | 7 | 6 | 3 | 5 | 27 | 24 | 2 | 5 | 6 | 5 | 2 | 8 | 12 | 10 | 12 | 17 | 9 | 10 | 5 | 3 | 14 | 7 | 4 | 6 |
| CBB | 60 | 71 | 42 | 40 | 93 | 101 | 48 | 12 | 24 | 25 | 24 | 15 | 17 | 44 | 30 | 40 | 66 | 71 | 135 | 40 | 35 | 59 | 60 | 29 |
| CLF | 9 | 8 | 7 | 6 | 11 | 6 | 14 | 7 | 4 | 10 | 20 | 25 | 16 | 3 | 11 | 8 | 3 | 8 | 7 | 6 | 8 | 7 | 9 | 4 |
| CMO | 26 | 20 | 14 | 23 | 40 | 62 | 19 | 14 | 49 | 26 | 31 | 13 | 35 | 46 | 46 | 58 | 27 | 22 | 20 | 13 | 26 | 12 | 26 | 13 |
| CNB | 10 | 17 | 12 | 7 | 8 | 4 | 5 | 3 | 6 | 2 | 2 | 3 | 3 | 16 | 24 | 14 | 4 | 7 | 7 | 7 | 5 | 7 | 7 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 14 | 9 | 5 | 4 | 2 | 1 | 2 | 5 | 2 | 2 | 2 | 2 | 7 | 9 | 5 | 3 | 5 | 5 | 4 | 9 | 6 | 6 | 4 |
| CZT | 16 | 5 | 9 | 7 | 20 | 11 | 18 | 6 | 13 | 12 | 5 | 3 | 5 | 4 | 5 | 4 | 3 | 6 | 9 | 8 | 7 | 10 | 5 | 4 |
| DLR | 4 | 5 | 5 | 5 | 18 | 13 | 7 | 4 | 4 | 4 | 3 | 3 | 11 | 5 | 6 | 13 | 11 | 10 | 9 | 5 | 8 | 6 | 4 | 7 |
| DOU | 11 | 8 | 7 | 7 | 11 | 6 | 14 | 6 | 4 | 9 | 19 | 25 | 15 | 3 | 12 | 9 | 4 | 9 | 7 | 7 | 10 | 8 | 10 | 5 |
| DRV | 85 | 123 | 159 | 67 | 30 | 33 | 22 | 20 | 30 | 26 | 15 | 21 | 17 | 52 | 61 | 29 | 19 | 21 | 18 | 40 | 51 | 10 | 63 | 48 |
| EBR | 0 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
| ESK | 11 | 8 | 9 | 9 | 9 | 5 | 13 | 6 | 7 | 7 | 15 | 21 | 22 | 9 | 12 | 7 | 4 | 12 | 14 | 6 | 12 | 13 | 12 | 6 |
| EUA | ||||||||||||||||||||||||
| EYR | 14 | 14 | 8 | 8 | 25 | 13 | 8 | 4 | 10 | 5 | 9 | 5 | 6 | 17 | 16 | 12 | 10 | 8 | 5 | 5 | 11 | 9 | 6 | 9 |
| FCC | 15 | 14 | 20 | 179 | 431 | 356 | 55 | 49 | 62 | 27 | 24 | 22 | 21 | 22 | 23 | 26 | 15 | 38 | 51 | 31 | 24 | 20 | 21 | 11 |
| FRD | 7 | 5 | 2 | 5 | 29 | 28 | 8 | 3 | 5 | 5 | 6 | 9 | 6 | 8 | 11 | 18 | 11 | 10 | 6 | 3 | 15 | 8 | 3 | 3 |
| FRN | 9 | 4 | 7 | 9 | 23 | 13 | 16 | 4 | 4 | 6 | 3 | 3 | 5 | 5 | 15 | 9 | 5 | 18 | 23 | 10 | 2 | 1 | 6 | 10 |
| FUR | 10 | 7 | 7 | 5 | 10 | 7 | 13 | 4 | 7 | 13 | 21 | 17 | 8 | 5 | 8 | 9 | 3 | 8 | 5 | 5 | 9 | 8 | 7 | 4 |
| GCK | ||||||||||||||||||||||||
| GDH | 33 | 41 | 34 | 30 | 51 | 27 | 19 | 14 | 20 | 60 | 67 | 55 | 52 | 40 | 81 | 82 | 75 | 69 | 58 | 24 | 44 | 29 | 62 | 44 |
| GNA | 12 | 10 | 13 | 15 | 11 | 5 | 4 | 2 | 5 | 2 | 5 | 5 | 4 | 21 | 24 | 17 | 7 | 7 | 17 | 9 | 11 | 7 | 4 | 9 |
| GUA | 13 | 12 | 14 | 9 | 4 | 17 | 13 | 3 | 8 | 2 | 2 | 1 | 2 | 2 | 3 | 2 | 1 | 2 | 2 | 3 | 6 | 16 | 10 | 4 |
| GUI | 2 | 4 | 2 | 3 | 7 | 3 | 1 | 6 | 8 | 3 | 12 | 19 | 22 | 10 | 7 | 11 | 7 | 9 | 6 | 6 | 4 | 3 | 4 | 2 |
| GZH | 0 | 0 | 1 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| HAD | 7 | 7 | 6 | 6 | 9 | 5 | 11 | 7 | 8 | 5 | 14 | 22 | 22 | 8 | 10 | 8 | 3 | 8 | 9 | 4 | 9 | 9 | 8 | 5 |
| HBK | 4 | 2 | 6 | 7 | 14 | 9 | 23 | 18 | 3 | 15 | 20 | 8 | 3 | 3 | 4 | 4 | 2 | 5 | 4 | 4 | 3 | 4 | 3 | 2 |
| HER | 3 | 2 | 5 | 7 | 14 | 4 | 17 | 12 | 8 | 3 | 15 | 15 | 5 | 5 | 5 | 4 | 2 | 5 | 4 | 5 | 3 | 6 | 3 | 3 |
| HLP | 16 | 11 | 11 | 7 | 8 | 4 | 11 | 3 | 8 | 14 | 23 | 15 | 8 | 5 | 11 | 8 | 4 | 9 | 8 | 7 | 12 | 15 | 11 | 7 |
| HON | 3 | 3 | 5 | 1 | 8 | 5 | 1 | 1 | 2 | 2 | 2 | 2 | 4 | 3 | 3 | 2 | 9 | 16 | 5 | 4 | 27 | 20 | 10 | 3 |
| HRB | 11 | 8 | 7 | 5 | 7 | 6 | 12 | 3 | 9 | 13 | 18 | 13 | 5 | 5 | 9 | 7 | 3 | 7 | 5 | 5 | 8 | 9 | 8 | 4 |
| HRN | 56 | 50 | 68 | 58 | 58 | 85 | 83 | 73 | 54 | 74 | 67 | 53 | 36 | 64 | 51 | 30 | 40 | 35 | 27 | 27 | 61 | 35 | 34 | 35 |
| HUA | 3 | 2 | 2 | 2 | 5 | 3 | 3 | 3 | 2 | 2 | 4 | 4 | 7 | 2 | 2 | 6 | 5 | 5 | 9 | 5 | 4 | 6 | 7 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 48 | 72 | 29 | 38 | 142 | 173 | 84 | 32 | 33 | 48 | 65 | 42 | 41 | 64 | 30 | 42 | 51 | 99 | 113 | 47 | 59 | 28 | 61 | 72 |
| IRT | 9 | 7 | 8 | 8 | 13 | 23 | 11 | 3 | 5 | 9 | 12 | 3 | 5 | 12 | 14 | 12 | 4 | 5 | 5 | 7 | 12 | 4 | 9 | 7 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 2 | 3 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 1 |
| KDU | 4 | 9 | 12 | 3 | 3 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 2 | 5 | 4 | 2 | 2 | 3 | 5 | 3 | 2 | 9 | 5 | 3 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 2 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 1 |
| KOU | 2 | 3 | 1 | 2 | 6 | 5 | 5 | 2 | 2 | 2 | 5 | 3 | 6 | 2 | 9 | 6 | 3 | 4 | 12 | 4 | 4 | 3 | 3 | 2 |
| LER | 15 | 7 | 9 | 8 | 7 | 7 | 11 | 5 | 4 | 10 | 14 | 12 | 18 | 9 | 9 | 5 | 4 | 12 | 12 | 7 | 16 | 19 | 17 | 7 |
| LRM | 10 | 8 | 13 | 17 | 10 | 6 | 4 | 1 | 5 | 2 | 6 | 6 | 4 | 15 | 20 | 14 | 4 | 3 | 10 | 6 | 4 | 5 | 2 | 11 |
| LVV | 13 | 8 | 9 | 6 | 6 | 6 | 10 | 5 | 10 | 15 | 18 | 8 | 4 | 6 | 10 | 8 | 3 | 8 | 6 | 5 | 8 | 10 | 7 | 4 |
| LYC | ||||||||||||||||||||||||
| LZH | 10 | 8 | 6 | 13 | 22 | 16 | 4 | 4 | 8 | 9 | 6 | 2 | 2 | 7 | 6 | 4 | 2 | 2 | 4 | 3 | 8 | 4 | 7 | 8 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 4 | 2 | 3 | 5 | 3 | 3 | 5 | 3 | 4 | 11 | 15 | 18 | 7 | 12 | 14 | 10 | 6 | 4 | 4 | 4 | 2 | 4 | 1 |
| MCQ | 18 | 11 | 17 | 17 | 17 | 20 | 10 | 6 | 21 | 14 | 8 | 8 | 35 | 46 | 34 | 41 | 17 | 19 | 16 | 20 | 9 | 9 | 12 | 11 |
| MEA | 8 | 13 | 16 | 37 | 77 | 70 | 47 | 15 | 22 | 17 | 11 | 8 | 14 | 20 | 24 | 10 | 11 | 21 | 32 | 8 | 21 | 7 | 9 | 10 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 1 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 2 | 1 |
| NAQ | 61 | 41 | 18 | 80 | 91 | 110 | 51 | 11 | 17 | 21 | 28 | 22 | 20 | 14 | 22 | 22 | 19 | 32 | 23 | 26 | 44 | 18 | 22 | 36 |
| NCK | 10 | 7 | 7 | 5 | 7 | 6 | 11 | 2 | 8 | 12 | 17 | 12 | 5 | 4 | 8 | 6 | 3 | 6 | 5 | 4 | 7 | 8 | 7 | 4 |
| NEW | 5 | 6 | 12 | 20 | 49 | 39 | 31 | 8 | 9 | 9 | 7 | 6 | 7 | 14 | 19 | 7 | 8 | 16 | 26 | 6 | 9 | 1 | 8 | 9 |
| NGK | 13 | 8 | 9 | 7 | 9 | 6 | 13 | 2 | 6 | 10 | 22 | 17 | 7 | 5 | 10 | 9 | 3 | 9 | 5 | 6 | 10 | 10 | 9 | 5 |
| NUR | 23 | 12 | 12 | 8 | 11 | 4 | 10 | 3 | 8 | 14 | 16 | 10 | 9 | 5 | 11 | 9 | 5 | 8 | 6 | 10 | 17 | 27 | 13 | 8 |
| NVS | 17 | 7 | 11 | 2 | 6 | 14 | 14 | 17 | 9 | 6 | 12 | 7 | 8 | 10 | 9 | 11 | 5 | 4 | 4 | 7 | 8 | 8 | 8 | 8 |
| OTT | 12 | 9 | 4 | 8 | 49 | 36 | 16 | 4 | 8 | 10 | 11 | 11 | 9 | 12 | 12 | 20 | 11 | 12 | 6 | 4 | 19 | 9 | 4 | 6 |
| PAF | 28 | 10 | 7 | 10 | 21 | 4 | 4 | 8 | 10 | 3 | 9 | 7 | 4 | 7 | 7 | 8 | 7 | 7 | 19 | 12 | 14 | 36 | 6 | 4 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 4 | 6 | 4 | 13 | 14 | 14 | 2 | 6 | 10 | 7 | 1 | 2 | 2 | 3 | 4 | 2 | 2 | 2 | 3 | 2 | 6 | 5 | 9 | 12 |
| PPT | 3 | 5 | 1 | 4 | 8 | 2 | 3 | 1 | 2 | 1 | 2 | 2 | 2 | 5 | 2 | 1 | 3 | 13 | 10 | 3 | 4 | 7 | 7 | 6 |
| PST | ||||||||||||||||||||||||
| QSB | 8 | 5 | 4 | 5 | 7 | 6 | 2 | 18 | 18 | 10 | 5 | 5 | 4 | 7 | 4 | 2 | 3 | 5 | 5 | 2 | 4 | 7 | 7 | 3 |
| RES | 49 | 67 | 40 | 15 | 47 | 40 | 39 | 10 | 11 | 22 | 16 | 37 | 23 | 29 | 33 | 41 | 95 | 110 | 106 | 61 | 65 | 18 | 70 | 26 |
| SBA | 27 | 36 | 38 | 54 | 47 | 47 | 27 | 11 | 14 | 33 | 31 | 44 | 31 | 46 | 44 | 26 | 42 | 66 | 52 | 41 | 57 | 29 | 65 | 19 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 11 | 5 | 14 | 13 | 66 | 69 | 25 | 11 | 26 | 15 | 11 | 9 | 11 | 22 | 32 | 14 | 18 | 16 | 26 | 10 | 23 | 5 | 15 | 4 |
| SJG | 3 | 3 | 1 | 1 | 8 | 9 | 6 | 2 | 2 | 5 | 6 | 5 | 4 | 4 | 10 | 9 | 8 | 8 | 4 | 7 | 12 | 1 | 3 | 1 |
| SOD | 27 | 21 | 20 | 13 | 13 | 12 | 12 | 6 | 9 | 17 | 15 | 11 | 9 | 7 | 10 | 9 | 11 | 9 | 12 | 45 | 61 | 66 | 57 | 23 |
| SPT | 4 | 5 | 3 | 4 | 8 | 3 | 11 | 11 | 7 | 7 | 21 | 24 | 15 | 4 | 7 | 8 | 5 | 8 | 5 | 4 | 6 | 4 | 4 | 3 |
| STJ | 12 | 7 | 6 | 7 | 25 | 17 | 14 | 3 | 5 | 8 | 14 | 12 | 9 | 15 | 14 | 20 | 19 | 10 | 17 | 7 | 20 | 7 | 5 | 5 |
| SUA | ||||||||||||||||||||||||
| TAM | 4 | 5 | 3 | 3 | 5 | 6 | 10 | 4 | 9 | 20 | 24 | 14 | 9 | 12 | 9 | 5 | 1 | 3 | 4 | 3 | 4 | 3 | 5 | 2 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 21 | 34 | 42 | 20 | 20 | 18 | 14 | 17 | 9 | 22 | 23 | 30 | 44 | 63 | 50 | 52 | 37 | 65 | 61 | 29 | 40 | 30 | 59 | 17 |
| THY | 11 | 8 | 7 | 5 | 7 | 6 | 12 | 3 | 10 | 14 | 18 | 13 | 5 | 5 | 9 | 6 | 3 | 7 | 5 | 4 | 7 | 8 | 8 | 4 |
| TRW | 9 | 3 | 3 | 4 | 3 | 4 | 5 | 3 | 1 | 2 | 4 | 8 | 13 | 3 | 6 | 21 | 22 | 12 | 7 | 9 | 13 | 5 | 7 | 3 |
| TSU | 2 | 2 | 4 | 5 | 9 | 5 | 19 | 17 | 9 | 3 | 14 | 14 | 8 | 2 | 2 | 3 | 5 | 5 | 4 | 4 | 3 | 4 | 3 | 2 |
| TUC | 4 | 5 | 6 | 6 | 20 | 13 | 11 | 4 | 4 | 5 | 3 | 3 | 6 | 6 | 11 | 8 | 12 | 19 | 11 | 6 | 5 | 5 | 7 | 10 |
| UPS | 22 | 11 | 11 | 8 | 10 | 5 | 10 | 3 | 4 | 11 | 18 | 14 | 11 | 4 | 10 | 8 | 4 | 10 | 7 | 10 | 14 | 15 | 9 | 7 |
| VAL | 6 | 6 | 5 | 6 | 9 | 6 | 10 | 7 | 9 | 6 | 12 | 13 | 25 | 15 | 9 | 8 | 3 | 9 | 10 | 4 | 8 | 10 | 6 | 6 |
| VIC | 4 | 4 | 12 | 17 | 42 | 36 | 28 | 6 | 7 | 10 | 6 | 5 | 6 | 14 | 21 | 5 | 12 | 15 | 22 | 7 | 11 | 5 | 10 | 7 |
| VSS | 4 | 2 | 2 | 2 | 6 | 2 | 3 | 3 | 3 | 6 | 16 | 8 | 5 | 15 | 7 | 9 | 3 | 8 | 5 | 2 | 2 | 3 | 4 | 1 |
| WNG | 14 | 9 | 10 | 8 | 10 | 6 | 14 | 3 | 5 | 10 | 20 | 20 | 12 | 6 | 10 | 8 | 4 | 10 | 7 | 7 | 11 | 10 | 11 | 5 |
| YKC | 16 | 17 | 23 | 67 | 219 | 218 | 67 | 19 | 135 | 66 | 42 | 18 | 30 | 43 | 43 | 24 | 18 | 38 | 57 | 23 | 56 | 29 | 43 | 20 |
- Date modified: