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 | 4 | 3 | 5 | 7 | 10 | 4 | 10 | 6 | 4 | 4 | 5 | 6 | 9 | 3 | 11 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| ABG | 6 | 10 | 4 | 2 | 5 | 19 | 7 | 11 | 3 | 7 | 13 | 5 | 4 | 4 | 4 | 2 | 3 | 1 | 2 | 1 | 1 | 1 | 2 | 2 |
| ABK | 48 | 66 | 18 | 15 | 10 | 18 | 13 | 28 | 14 | 16 | 13 | 12 | 14 | 22 | 13 | 14 | 17 | 27 | 39 | 15 | 18 | 19 | 28 | 35 |
| AIA | 57 | 37 | 4 | 15 | 20 | 23 | 14 | 11 | 12 | 5 | 4 | 8 | 10 | 7 | 6 | 12 | 9 | 6 | 3 | 4 | 7 | 4 | 3 | 7 |
| AMS | 15 | 10 | 12 | 8 | 8 | 4 | 11 | 12 | 3 | 3 | 7 | 9 | 4 | 9 | 4 | 3 | 6 | 7 | 7 | 5 | 2 | 3 | 4 | 5 |
| API | 0 | 0 | 1 | 0 | ||||||||||||||||||||
| AQU | 12 | 12 | 4 | 3 | 5 | 7 | 8 | 8 | 10 | 33 | 23 | 7 | 11 | 15 | 7 | 8 | 12 | 6 | 6 | 2 | 3 | 2 | 3 | 2 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 2 | 2 | 2 | 2 | 3 | 3 | 13 | 18 | 15 | 5 | 11 | 12 | 10 | 6 | 5 | 6 | 4 | 2 | 4 | 3 | 1 | 1 | 1 |
| ASP | 5 | 13 | 9 | 9 | 8 | 4 | 3 | 4 | 6 | 8 | 4 | 3 | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 3 | 3 | 2 | 11 | 7 |
| BDV | 17 | 16 | 3 | 5 | 6 | 6 | 8 | 9 | 8 | 28 | 19 | 12 | 9 | 14 | 8 | 7 | 13 | 11 | 9 | 2 | 3 | 2 | 4 | 3 |
| BEL | 17 | 15 | 3 | 6 | 6 | 8 | 6 | 12 | 10 | 26 | 14 | 8 | 8 | 15 | 8 | 8 | 13 | 11 | 9 | 2 | 3 | 3 | 5 | 5 |
| BFE | 26 | 27 | 4 | 9 | 8 | 6 | 8 | 12 | 6 | 21 | 18 | 12 | 6 | 12 | 5 | 8 | 14 | 18 | 14 | 3 | 6 | 4 | 7 | 6 |
| BFO | ||||||||||||||||||||||||
| BLC | 33 | 70 | 104 | 41 | 64 | 45 | 30 | 21 | 25 | 17 | 16 | 25 | 45 | 30 | 22 | 39 | 19 | 26 | 32 | 14 | 22 | 18 | 54 | 14 |
| BMT | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 10 | 8 | 11 | 5 | 9 | 6 | 5 | 6 | 3 | 13 | 14 | 5 | 8 | 7 | 10 | 6 | 15 | 17 | 10 | 5 | 5 | 2 | 1 | 5 |
| BOX | 14 | 12 | 6 | 7 | 3 | 5 | 2 | 17 | 16 | 24 | 5 | 7 | 13 | 19 | 5 | 8 | 11 | 8 | 5 | 6 | 3 | 4 | 7 | 8 |
| BRW | 66 | 43 | 28 | 42 | 79 | 108 | 71 | 58 | 67 | 185 | 175 | 92 | 40 | 50 | 50 | 40 | 40 | 25 | 30 | 13 | 34 | 26 | 20 | 25 |
| BSL | 10 | 8 | 4 | 3 | 5 | 6 | 3 | 4 | 5 | 7 | 8 | 11 | 8 | 13 | 12 | 15 | 3 | 6 | 6 | 1 | 3 | 3 | 5 | 4 |
| CBB | 56 | 31 | 27 | 12 | 35 | 54 | 22 | 17 | 19 | 29 | 16 | 28 | 18 | 17 | 24 | 44 | 52 | 20 | 45 | 35 | 36 | 38 | 54 | 36 |
| CLF | 21 | 22 | 5 | 6 | 7 | 6 | 9 | 12 | 6 | 17 | 21 | 23 | 7 | 10 | 7 | 12 | 14 | 15 | 6 | 3 | 4 | 2 | 4 | 3 |
| CMO | 11 | 10 | 11 | 18 | 24 | 33 | 22 | 58 | 35 | 100 | 108 | 17 | 19 | 17 | 13 | 22 | 9 | 11 | 11 | 3 | 14 | 14 | 7 | 16 |
| CNB | 5 | 14 | 19 | 8 | 8 | 9 | 7 | 4 | 5 | 13 | 8 | 3 | 3 | 5 | 5 | 5 | 4 | 3 | 2 | 4 | 4 | 7 | 10 | 2 |
| CSY | ||||||||||||||||||||||||
| CTA | 8 | 10 | 10 | 2 | 8 | 5 | 6 | 5 | 5 | 7 | 3 | 2 | 2 | 4 | 2 | 3 | 2 | 2 | 2 | 3 | 2 | 11 | 12 | 4 |
| CZT | 35 | 28 | 2 | 9 | 8 | 13 | 5 | 17 | 10 | 12 | 2 | 3 | 9 | 7 | 5 | 4 | 3 | 12 | 7 | 3 | 2 | 2 | 5 | 5 |
| DLR | 7 | 4 | 5 | 2 | 4 | 3 | 2 | 4 | 3 | 6 | 7 | 4 | 8 | 8 | 7 | 12 | 20 | 7 | 3 | 1 | 3 | 2 | 3 | 5 |
| DOU | 23 | 24 | 5 | 6 | 7 | 5 | 9 | 12 | 5 | 19 | 22 | 19 | 7 | 13 | 6 | 11 | 15 | 16 | 9 | 3 | 4 | 2 | 5 | 4 |
| DRV | 53 | 66 | 40 | 48 | 50 | 32 | 23 | 33 | 20 | 35 | 32 | 13 | 19 | 23 | 24 | 19 | 19 | 13 | 5 | 17 | 16 | 12 | 34 | 29 |
| EBR | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 4 | 3 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 0 | 0 | 1 | 1 |
| ESK | 33 | 33 | 6 | 7 | 11 | 5 | 6 | 15 | 8 | 9 | 16 | 22 | 12 | 8 | 5 | 9 | 10 | 17 | 7 | 2 | 5 | 2 | 7 | 5 |
| EUA | ||||||||||||||||||||||||
| EYR | 19 | 6 | 7 | 10 | 7 | 7 | 7 | 5 | 8 | 12 | 8 | 4 | 4 | 4 | 6 | 6 | 4 | 5 | 3 | 7 | 11 | 9 | 5 | 17 |
| FCC | 37 | 65 | 80 | 158 | 116 | 70 | 69 | 38 | 33 | 18 | 15 | 28 | 18 | 20 | 9 | 22 | 14 | 18 | 19 | 8 | 13 | 7 | 23 | 16 |
| FRD | 16 | 10 | 2 | 8 | 8 | 7 | 6 | 4 | 6 | 6 | 8 | 10 | 7 | 14 | 4 | 15 | 10 | 3 | 2 | 3 | 3 | 6 | 4 | 2 |
| FRN | 8 | 7 | 7 | 5 | 5 | 5 | 6 | 5 | 4 | 8 | 11 | 4 | 4 | 4 | 9 | 8 | 7 | 15 | 17 | 6 | 1 | 3 | 3 | 3 |
| FUR | 18 | 17 | 4 | 4 | 6 | 6 | 8 | 10 | 7 | 29 | 22 | 13 | 8 | 13 | 8 | 8 | 14 | 12 | 9 | 2 | 3 | 2 | 4 | 2 |
| GCK | ||||||||||||||||||||||||
| GDH | 44 | 49 | 33 | 29 | 35 | 17 | 23 | 50 | 44 | 32 | 50 | 93 | 72 | 52 | 49 | 49 | 29 | 31 | 39 | 35 | 18 | 16 | 15 | 19 |
| GNA | 13 | 18 | 10 | 9 | 14 | 5 | 8 | 4 | 5 | 11 | 7 | 5 | 4 | 12 | 5 | 4 | 5 | 6 | 4 | 3 | 6 | 3 | 6 | 11 |
| GUA | 12 | 21 | 19 | 3 | 4 | 8 | 9 | 2 | 5 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 4 | 9 | 10 | 6 | 2 |
| GUI | 4 | 9 | 3 | 1 | 4 | 4 | 5 | 8 | 9 | 2 | 4 | 19 | 23 | 17 | 2 | 11 | 12 | 14 | 8 | 2 | 2 | 2 | 2 | 4 |
| GZH | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| HAD | 24 | 25 | 4 | 6 | 9 | 5 | 6 | 12 | 6 | 8 | 17 | 21 | 15 | 7 | 5 | 9 | 11 | 15 | 5 | 1 | 4 | 2 | 5 | 5 |
| HBK | 13 | 12 | 2 | 2 | 5 | 11 | 13 | 9 | 7 | 24 | 13 | 4 | 3 | 4 | 6 | 8 | 2 | 6 | 3 | 2 | 2 | 1 | 4 | 2 |
| HER | 14 | 13 | 1 | 2 | 4 | 6 | 11 | 14 | 5 | 14 | 23 | 12 | 3 | 4 | 1 | 6 | 2 | 7 | 2 | 3 | 2 | 1 | 5 | 4 |
| HLP | 19 | 20 | 4 | 7 | 5 | 6 | 7 | 12 | 11 | 24 | 16 | 10 | 11 | 14 | 8 | 9 | 13 | 13 | 7 | 3 | 4 | 2 | 7 | 6 |
| HON | 6 | 9 | 2 | 2 | 4 | 3 | 4 | 2 | 1 | 4 | 2 | 2 | 2 | 2 | 2 | 2 | 4 | 12 | 6 | 11 | 22 | 19 | 4 | 4 |
| HRB | 15 | 14 | 3 | 5 | 6 | 8 | 8 | 9 | 10 | 28 | 18 | 9 | 11 | 15 | 7 | 9 | 11 | 9 | 8 | 2 | 3 | 2 | 4 | 2 |
| HRN | 47 | 77 | 29 | 64 | 132 | 133 | 60 | 92 | 86 | 27 | 18 | 38 | 38 | 46 | 57 | 45 | 23 | 87 | 35 | 29 | 25 | 25 | 27 | 44 |
| HUA | 6 | 4 | 2 | 1 | 3 | 3 | 4 | 3 | 3 | 2 | 2 | 4 | 6 | 7 | 8 | 5 | 9 | 5 | 8 | 5 | 6 | 3 | 3 | 4 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 77 | 85 | 54 | 58 | 70 | 55 | 15 | 27 | 45 | 42 | 39 | 70 | 54 | 64 | 53 | 58 | 28 | 58 | 41 | 11 | 23 | 12 | 30 | 31 |
| IRT | 15 | 18 | 4 | 11 | 14 | 21 | 7 | 5 | 5 | 13 | 8 | 3 | 4 | 6 | 6 | 3 | 1 | 3 | 5 | 2 | 1 | 4 | 5 | 9 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 3 | 2 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| KDU | 3 | 11 | 8 | 2 | 4 | 7 | 3 | 2 | 6 | 8 | 2 | 2 | 2 | 3 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 10 | 4 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 2 | 2 | 2 | 2 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 |
| KOU | 2 | 5 | 2 | 1 | 2 | 3 | 3 | 4 | 2 | 7 | 3 | 4 | 9 | 4 | 9 | 4 | 3 | 2 | 3 | 1 | 5 | 2 | 4 | 3 |
| LER | 35 | 34 | 8 | 9 | 12 | 4 | 6 | 14 | 5 | 10 | 11 | 16 | 11 | 8 | 6 | 8 | 8 | 19 | 14 | 3 | 6 | 3 | 9 | 7 |
| LRM | 11 | 12 | 9 | 9 | 11 | 7 | 7 | 6 | 6 | 7 | 4 | 4 | 5 | 9 | 6 | 3 | 3 | 6 | 4 | 1 | 5 | 3 | 5 | 15 |
| LVV | 14 | 13 | 3 | 7 | 6 | 9 | 5 | 14 | 15 | 24 | 10 | 7 | 9 | 14 | 11 | 8 | 9 | 10 | 7 | 4 | 4 | 4 | 4 | 4 |
| LYC | ||||||||||||||||||||||||
| LZH | 10 | 5 | 3 | 17 | 18 | 11 | 5 | 5 | 8 | 13 | 7 | 3 | 3 | 4 | 5 | 2 | 2 | 3 | 4 | 2 | 2 | 2 | 6 | 12 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 5 | 3 | 2 | 3 | 4 | 7 | 9 | 6 | 7 | 2 | 7 | 11 | 8 | 5 | 14 | 11 | 12 | 4 | 6 | 2 | 1 | 2 | 2 |
| MCQ | 6 | 13 | 22 | 11 | 25 | 29 | 12 | 13 | 21 | 56 | 28 | 14 | 17 | 23 | 20 | 16 | 8 | 8 | 8 | 5 | 12 | 9 | 8 | 9 |
| MEA | 12 | 18 | 19 | 13 | 24 | 10 | 26 | 24 | 21 | 38 | 38 | 10 | 14 | 7 | 8 | 8 | 6 | 14 | 13 | 3 | 5 | 4 | 5 | 3 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 1 | 3 | 2 | 2 | 1 | 1 | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 2 | 1 |
| NAQ | 146 | 155 | 27 | 47 | 82 | 69 | 31 | 25 | 11 | 11 | 17 | 27 | 26 | 23 | 11 | 19 | 7 | 14 | 11 | 15 | 7 | 4 | 14 | 34 |
| NCK | 17 | 15 | 4 | 4 | 7 | 8 | 8 | 9 | 10 | 29 | 18 | 10 | 12 | 16 | 7 | 8 | 12 | 10 | 9 | 2 | 3 | 2 | 4 | 3 |
| NEW | 10 | 10 | 13 | 7 | 9 | 9 | 14 | 10 | 11 | 20 | 20 | 7 | 8 | 3 | 3 | 6 | 8 | 14 | 11 | 4 | 5 | 2 | 2 | 2 |
| NGK | 21 | 21 | 4 | 6 | 7 | 6 | 7 | 11 | 6 | 26 | 20 | 13 | 10 | 12 | 7 | 8 | 14 | 15 | 11 | 3 | 4 | 3 | 5 | 3 |
| NUR | 17 | 20 | 5 | 7 | 4 | 5 | 5 | 11 | 9 | 23 | 11 | 8 | 10 | 17 | 5 | 9 | 12 | 16 | 10 | 4 | 4 | 4 | 9 | 10 |
| NVS | 6 | 9 | 8 | 4 | 11 | 17 | 15 | 14 | 3 | 11 | 10 | 9 | 9 | 11 | 10 | 6 | 6 | 10 | 10 | 5 | 3 | 4 | 3 | 8 |
| OTT | 28 | 19 | 4 | 15 | 14 | 13 | 11 | 6 | 11 | 9 | 9 | 12 | 11 | 20 | 7 | 18 | 10 | 4 | 4 | 7 | 4 | 2 | 4 | 4 |
| PAF | 30 | 29 | 15 | 13 | 12 | 9 | 10 | 14 | 5 | 4 | 8 | 10 | 6 | 9 | 7 | 6 | 9 | 19 | 14 | 5 | 2 | 5 | 5 | 13 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 8 | 6 | 12 | 14 | 4 | 4 | 6 | 10 | 10 | 3 | 5 | 3 | 4 | 3 | 1 | 2 | 1 | 4 | 2 | 2 | 2 | 11 | 12 |
| PPT | 4 | 4 | 8 | 5 | 4 | 2 | 2 | 3 | 2 | 3 | 2 | 2 | 1 | 2 | 2 | 2 | 4 | 13 | 10 | 1 | 8 | 9 | 8 | 7 |
| PST | ||||||||||||||||||||||||
| QSB | 6 | 3 | 2 | 10 | 11 | 9 | 11 | 35 | 19 | 7 | 4 | 11 | 13 | 11 | 7 | 6 | 3 | 3 | 2 | 2 | 2 | 2 | 2 | 2 |
| RES | 47 | 31 | 32 | 19 | 42 | 51 | 20 | 15 | 15 | 26 | 10 | 35 | 26 | 30 | 26 | 83 | 53 | 18 | 80 | 34 | 36 | 14 | 35 | 12 |
| SBA | 41 | 26 | 51 | 25 | 23 | 14 | 22 | 25 | 36 | 26 | 28 | 24 | 38 | 26 | 29 | 26 | 29 | 18 | 30 | 18 | 39 | 17 | 39 | 24 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 5 | 8 | 6 | 21 | 13 | 21 | 18 | 16 | 18 | 23 | 33 | 10 | 9 | 10 | 11 | 14 | 8 | 10 | 11 | 3 | 12 | 10 | 6 | 7 |
| SJG | 5 | 2 | 1 | 3 | 4 | 2 | 3 | 3 | 3 | 2 | 7 | 5 | 9 | 3 | 2 | 9 | 12 | 8 | 1 | 3 | 6 | 3 | 3 | 3 |
| SOD | 16 | 40 | 19 | 9 | 9 | 9 | 7 | 19 | 9 | 19 | 11 | 12 | 15 | 23 | 10 | 13 | 14 | 24 | 22 | 7 | 16 | 8 | 17 | 18 |
| SPT | 10 | 13 | 3 | 3 | 5 | 3 | 6 | 11 | 9 | 6 | 21 | 27 | 19 | 6 | 10 | 12 | 12 | 14 | 3 | 2 | 2 | 1 | 3 | 4 |
| STJ | 23 | 10 | 9 | 12 | 12 | 10 | 7 | 15 | 6 | 7 | 7 | 9 | 12 | 13 | 12 | 20 | 16 | 6 | 12 | 6 | 5 | 2 | 2 | 7 |
| SUA | ||||||||||||||||||||||||
| TAM | 4 | 6 | 3 | 2 | 3 | 7 | 12 | 11 | 10 | 45 | 43 | 9 | 15 | 16 | 15 | 15 | 10 | 1 | 7 | 2 | 2 | 2 | 1 | 2 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 37 | 40 | 29 | 23 | 36 | 34 | 23 | 17 | 17 | 22 | 10 | 25 | 18 | 44 | 84 | 45 | 31 | 46 | 30 | 20 | 18 | 14 | 32 | 24 |
| THY | 15 | 14 | 4 | 4 | 6 | 8 | 8 | 9 | 11 | 28 | 19 | 9 | 12 | 15 | 7 | 9 | 11 | 8 | 8 | 2 | 3 | 2 | 3 | 3 |
| TRW | 19 | 13 | 2 | 4 | 7 | 7 | 6 | 4 | 5 | 3 | 4 | 10 | 12 | 6 | 7 | 19 | 25 | 3 | 7 | 9 | 7 | 1 | 3 | 3 |
| TSU | 6 | 7 | 2 | 2 | 3 | 8 | 20 | 17 | 4 | 25 | 25 | 6 | 2 | 5 | 4 | 9 | 5 | 7 | 3 | 3 | 2 | 1 | 3 | 3 |
| TUC | 9 | 5 | 8 | 3 | 4 | 4 | 4 | 4 | 2 | 8 | 9 | 3 | 5 | 8 | 16 | 5 | 18 | 24 | 7 | 6 | 4 | 5 | 2 | 5 |
| UPS | 20 | 24 | 4 | 7 | 5 | 5 | 6 | 11 | 8 | 19 | 14 | 12 | 10 | 12 | 4 | 8 | 13 | 17 | 11 | 3 | 4 | 4 | 8 | 8 |
| VAL | 23 | 26 | 3 | 6 | 10 | 5 | 5 | 11 | 9 | 5 | 12 | 20 | 18 | 11 | 4 | 9 | 8 | 14 | 5 | 3 | 4 | 2 | 7 | 7 |
| VIC | 7 | 7 | 11 | 9 | 7 | 10 | 13 | 8 | 9 | 17 | 20 | 5 | 7 | 5 | 5 | 8 | 5 | 13 | 9 | 8 | 7 | 3 | 4 | 2 |
| VSS | 8 | 4 | 1 | 2 | 3 | 4 | 6 | 4 | 3 | 7 | 16 | 7 | 5 | 11 | 25 | 7 | 6 | 5 | 4 | 2 | 4 | 2 | 2 | 1 |
| WNG | 26 | 26 | 5 | 7 | 7 | 5 | 8 | 12 | 5 | 21 | 21 | 14 | 8 | 12 | 6 | 8 | 14 | 16 | 11 | 3 | 4 | 3 | 6 | 4 |
| YKC | 43 | 66 | 63 | 45 | 105 | 88 | 143 | 160 | 85 | 24 | 63 | 31 | 25 | 32 | 16 | 20 | 14 | 20 | 22 | 11 | 13 | 11 | 19 | 9 |
- Date modified: