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 | 1 | 1 | 1 | 6 | 8 | 13 | 1 | 8 | 4 | 12 | 3 | 8 | 2 | 1 | 7 | 4 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 |
| ABG | 6 | 5 | 13 | 10 | 17 | 2 | 10 | 7 | 8 | 6 | 6 | 3 | 4 | 6 | 4 | 2 | 3 | 2 | 2 | 4 | 3 | 2 | 1 | 2 |
| ABK | 63 | 116 | 73 | 29 | 31 | 24 | 22 | 12 | 13 | 6 | 6 | 10 | 19 | 28 | 27 | 24 | 10 | 71 | 64 | 23 | 17 | 22 | 53 | 64 |
| AIA | 3 | 8 | 4 | 3 | 6 | 4 | 2 | 2 | 3 | 1 | 1 | 2 | 6 | 4 | 2 | 2 | 2 | 1 | 7 | 4 | 2 | 3 | 2 | 3 |
| AMS | 1 | 7 | 2 | 2 | 2 | 4 | 7 | 2 | 5 | 3 | 3 | 3 | 2 | 3 | 4 | 2 | 2 | 7 | 4 | 2 | 2 | 1 | 3 | 2 |
| API | 1 | 0 | 3 | 1 | ||||||||||||||||||||
| AQU | 1 | 4 | 1 | 1 | 3 | 2 | 1 | 6 | 8 | 5 | 5 | 1 | 3 | 8 | 5 | 4 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 7 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 |
| ASP | 10 | 6 | 3 | 6 | 7 | 3 | 3 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 2 | 2 | 6 |
| BDV | 1 | 5 | 1 | 1 | 1 | 2 | 1 | 6 | 7 | 8 | 2 | 2 | 6 | 9 | 6 | 4 | 1 | 2 | 1 | 1 | 1 | 0 | 1 | 1 |
| BEL | 4 | 3 | 3 | 3 | 2 | 4 | 3 | 9 | 16 | 8 | 7 | 5 | 7 | 11 | 5 | 5 | 2 | 2 | 3 | 2 | 2 | 1 | 3 | 3 |
| BFE | 8 | 5 | 4 | 6 | 5 | 2 | 3 | 5 | 9 | 11 | 1 | 5 | 9 | 9 | 8 | 7 | 8 | 5 | 11 | 2 | 5 | 1 | 5 | 7 |
| BFO | ||||||||||||||||||||||||
| BLC | 82 | 51 | 105 | 143 | 68 | 29 | 39 | 20 | 27 | 12 | 31 | 55 | 39 | 83 | 25 | 49 | 36 | 45 | 19 | 20 | 20 | 13 | 58 | 24 |
| BMT | 2 | 6 | 9 | 2 | 1 | 2 | 4 | 5 | 3 | 1 | 2 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 2 | 2 | 4 |
| BNG | 1 | 2 | 1 | 1 | 3 | 7 | 9 | 10 | 5 | 5 | 4 | 3 | 17 | 3 | 7 | 5 | 4 | 2 | 1 | 1 | 1 | 1 | 2 | 1 |
| BOU | 1 | 2 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 3 | 2 | 2 | 5 | 4 | 1 | 2 | 0 | 1 | 4 | 4 | 2 |
| BOX | 2 | 8 | 6 | 3 | 2 | 2 | 3 | 3 | 8 | 2 | 2 | 4 | 5 | 8 | 4 | 3 | 1 | 6 | 3 | 1 | 2 | 1 | 4 | 3 |
| BRW | 18 | 9 | 12 | 17 | 88 | 37 | 41 | 30 | 59 | 89 | 92 | 91 | 34 | 57 | 20 | 11 | 15 | 47 | 27 | 11 | 11 | 7 | 6 | 16 |
| BSL | 3 | 7 | 3 | 1 | 5 | 3 | 3 | 4 | 4 | 1 | 1 | 3 | 5 | 8 | 12 | 5 | 3 | 1 | 4 | 2 | 3 | 4 | 6 | 2 |
| CBB | 36 | 25 | 33 | 44 | 14 | 11 | 23 | 20 | 17 | 15 | 16 | 12 | 29 | 34 | 61 | 49 | 60 | 56 | 38 | 25 | 42 | 41 | 95 | 36 |
| CLF | 1 | 4 | 2 | 1 | 1 | 2 | 1 | 5 | 6 | 7 | 10 | 5 | 5 | 12 | 7 | 5 | 5 | 4 | 3 | 2 | 1 | 1 | 1 | 1 |
| CMO | 4 | 29 | 18 | 17 | 44 | 47 | 55 | 37 | 31 | 133 | 70 | 13 | 11 | 12 | 12 | 10 | 14 | 8 | 10 | 14 | 9 | 7 | 10 | 5 |
| CNB | 2 | 2 | 3 | 4 | 6 | 4 | 4 | 1 | 2 | 4 | 6 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 2 |
| CSY | ||||||||||||||||||||||||
| CTA | 2 | 3 | 3 | 2 | 1 | 6 | 7 | 2 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 6 | 6 |
| CZT | 8 | 19 | 3 | 4 | 5 | 3 | 5 | 7 | 3 | 3 | 2 | 3 | 4 | 4 | 2 | 2 | 2 | 8 | 4 | 2 | 2 | 2 | 2 | 2 |
| DLR | 2 | 2 | 2 | 1 | 4 | 4 | 3 | 3 | 3 | 1 | 1 | 2 | 2 | 3 | 8 | 11 | 2 | 4 | 1 | 3 | 2 | 5 | 5 | 3 |
| DOU | 3 | 10 | 3 | 1 | 3 | 2 | 2 | 5 | 7 | 8 | 10 | 3 | 8 | 10 | 6 | 4 | 6 | 3 | 2 | 3 | 2 | 1 | 3 | 2 |
| DRV | 53 | 56 | 53 | 50 | 91 | 75 | 40 | 58 | 26 | 20 | 28 | 26 | 17 | 21 | 24 | 29 | 20 | 25 | 26 | 15 | 19 | 15 | 31 | 35 |
| EBR | 7 | 10 | 2 | 3 | 4 | 3 | 5 | 4 | 9 | 19 | 9 | 4 | 7 | 13 | 5 | 5 | 7 | 4 | 7 | 3 | 4 | 4 | 5 | 3 |
| ESK | 9 | 9 | 3 | 2 | 3 | 2 | 1 | 1 | 4 | 7 | 5 | 4 | 3 | 7 | 7 | 6 | 10 | 6 | 1 | 5 | 3 | 0 | 2 | 4 |
| EUA | ||||||||||||||||||||||||
| EYR | 6 | 2 | 5 | 6 | 6 | 3 | 3 | 2 | 3 | 5 | 3 | 3 | 3 | 5 | 3 | 4 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 4 |
| FCC | 127 | 179 | 124 | 228 | 147 | 84 | 116 | 74 | 56 | 37 | 35 | 39 | 20 | 19 | 6 | 11 | 10 | 18 | 12 | 8 | 10 | 5 | 19 | 13 |
| FRD | 2 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 2 | 7 | 5 | 1 | 5 | 2 | 3 | 5 | 2 | 1 | 1 |
| FRN | 5 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 3 | 2 | 4 | 11 | 9 | 6 | 4 | 1 | 3 | 4 |
| FUR | 1 | 4 | 1 | 1 | 1 | 2 | 1 | 4 | 7 | 10 | 3 | 3 | 5 | 9 | 8 | 4 | 2 | 2 | 1 | 1 | 1 | 0 | 1 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 79 | 69 | 53 | 31 | 30 | 45 | 27 | 57 | 90 | 64 | 72 | 86 | 70 | 51 | 43 | 121 | 58 | 78 | 46 | 37 | 27 | 14 | 20 | 45 |
| GNA | 9 | 23 | 13 | 9 | 9 | 10 | 10 | 6 | 5 | 10 | 3 | 3 | 4 | 10 | 3 | 3 | 7 | 5 | 3 | 3 | 4 | 2 | 4 | 7 |
| GUA | 5 | 8 | 2 | 2 | 6 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 4 | 8 |
| GUI | 2 | 6 | 2 | 1 | 1 | 1 | 2 | 3 | 2 | 4 | 7 | 4 | 13 | 3 | 4 | 7 | 9 | 9 | 7 | 2 | 1 | 1 | 1 | 1 |
| GZH | 4 | 5 | 5 | 2 | 2 | 1 | 6 | 8 | 2 | 1 | 3 | 1 | 0 | 2 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 4 |
| HAD | 5 | 2 | 2 | 2 | 2 | 2 | 4 | 3 | 5 | 8 | 11 | 5 | 3 | 12 | 12 | 7 | 8 | 6 | 5 | 5 | 3 | 0 | 3 | 2 |
| HBK | 4 | 6 | 4 | 3 | 4 | 6 | 5 | 6 | 8 | 10 | 6 | 3 | 4 | 5 | 8 | 4 | 3 | 4 | 4 | 3 | 4 | 2 | 4 | 4 |
| HER | 21 | 15 | 1 | 4 | 8 | 10 | 11 | 5 | 6 | 12 | 17 | 4 | 16 | 5 | 6 | 4 | 5 | 2 | 3 | 3 | 1 | 2 | 3 | 4 |
| HLP | 3 | 5 | 5 | 2 | 2 | 3 | 2 | 7 | 12 | 8 | 4 | 6 | 7 | 10 | 8 | 5 | 4 | 2 | 5 | 2 | 3 | 2 | 4 | 5 |
| HON | 5 | 7 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 0 | 1 | 1 | 2 | 2 | 1 | 4 | 7 | 1 | 14 | 15 | 5 | 2 | 8 |
| HRB | 1 | 3 | 1 | 2 | 2 | 2 | 2 | 7 | 10 | 7 | 1 | 3 | 4 | 8 | 7 | 7 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 |
| HRN | 30 | 93 | 37 | 51 | 68 | 135 | 61 | 54 | 49 | 28 | 36 | 41 | 79 | 76 | 55 | 65 | 41 | 83 | 51 | 25 | 17 | 21 | 32 | 51 |
| HUA | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 | 2 | 1 | 2 | 2 | 4 | 4 | 3 | 2 | 2 | 5 | 8 | 2 | 4 | 2 | 2 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 87 | 125 | 76 | 30 | 85 | 82 | 46 | 39 | 55 | 47 | 24 | 40 | 18 | 31 | 14 | 33 | 40 | 51 | 57 | 45 | 23 | 32 | 38 | 32 |
| IRT | 2 | 4 | 1 | 1 | 6 | 4 | 7 | 6 | 4 | 2 | 2 | 3 | 1 | 3 | 0 | 0 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| IZN | ||||||||||||||||||||||||
| KAK | 10 | 5 | 6 | 5 | 7 | 4 | 3 | 3 | 4 | 2 | 2 | 2 | 4 | 4 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 6 | 5 | 10 |
| KDU | 5 | 6 | 4 | 4 | 4 | 2 | 5 | 6 | 4 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 3 | 2 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 11 | 10 | 5 | 4 | 5 | 9 | 8 | 5 | 3 | 1 | 1 | 3 | 3 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 6 |
| KOU | 6 | 5 | 2 | 2 | 3 | 2 | 3 | 2 | 2 | 5 | 5 | 13 | 5 | 6 | 3 | 8 | 9 | 7 | 2 | 3 | 2 | 4 | 3 | 1 |
| LER | 15 | 32 | 15 | 7 | 7 | 5 | 7 | 3 | 3 | 2 | 3 | 4 | 6 | 7 | 4 | 11 | 6 | 7 | 3 | 10 | 6 | 1 | 8 | 10 |
| LRM | 8 | 11 | 6 | 7 | 8 | 7 | 5 | 6 | 11 | 8 | 2 | 4 | 3 | 6 | 4 | 2 | 3 | 4 | 3 | 1 | 2 | 2 | 5 | 11 |
| LVV | 4 | 4 | 8 | 9 | 7 | 4 | 7 | 14 | 15 | 7 | 4 | 10 | 7 | 9 | 7 | 5 | 6 | 6 | 5 | 6 | 6 | 5 | 6 | 4 |
| LYC | ||||||||||||||||||||||||
| LZH | 4 | 2 | 7 | 6 | 5 | 2 | 1 | 2 | 5 | 5 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 4 | 1 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 4 | 3 | 1 | 3 | 2 | 4 | 4 | 8 | 8 | 3 | 17 | 14 | 7 | 22 | 21 | 14 | 5 | 6 | 10 | 1 | 1 | 1 | 1 |
| MCQ | 10 | 13 | 19 | 13 | 26 | 23 | 13 | 17 | 25 | 66 | 48 | 28 | 33 | 46 | 24 | 19 | 8 | 14 | 12 | 6 | 7 | 5 | 4 | 4 |
| MEA | 13 | 23 | 11 | 13 | 22 | 34 | 42 | 26 | 17 | 40 | 27 | 22 | 8 | 5 | 6 | 4 | 3 | 4 | 2 | 3 | 6 | 3 | 6 | 5 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 5 | 3 | 1 | 2 | 8 | 3 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 3 | 1 | 2 | 3 |
| NAQ | 230 | 199 | 62 | 69 | 87 | 44 | 29 | 34 | 25 | 15 | 12 | 22 | 9 | 16 | 28 | 13 | 15 | 42 | 67 | 9 | 12 | 6 | 34 | 37 |
| NCK | 1 | 5 | 1 | 1 | 1 | 2 | 1 | 8 | 8 | 6 | 2 | 3 | 4 | 7 | 6 | 6 | 1 | 3 | 1 | 1 | 0 | 1 | 1 | 1 |
| NEW | 5 | 6 | 1 | 4 | 2 | 3 | 6 | 4 | 1 | 8 | 2 | 4 | 1 | 3 | 2 | 3 | 1 | 2 | 1 | 1 | 3 | 3 | 2 | 1 |
| NGK | 3 | 7 | 2 | 1 | 2 | 2 | 2 | 4 | 9 | 9 | 2 | 2 | 9 | 7 | 5 | 5 | 4 | 3 | 3 | 2 | 2 | 2 | 3 | 4 |
| NUR | 6 | 12 | 12 | 3 | 5 | 4 | 3 | 2 | 4 | 8 | 3 | 4 | 6 | 11 | 5 | 7 | 4 | 9 | 4 | 3 | 3 | 3 | 6 | 7 |
| NVS | 3 | 6 | 5 | 7 | 5 | 6 | 7 | 4 | 4 | 7 | 6 | 4 | 4 | 5 | 2 | 4 | 4 | 4 | 3 | 4 | 3 | 3 | 4 | 3 |
| OTT | 3 | 7 | 4 | 7 | 4 | 8 | 3 | 4 | 5 | 4 | 5 | 4 | 4 | 6 | 7 | 4 | 3 | 3 | 2 | 2 | 6 | 2 | 5 | 4 |
| PAF | 8 | 18 | 10 | 5 | 5 | 4 | 6 | 3 | 2 | 2 | 1 | 2 | 3 | 3 | 2 | 2 | 2 | 9 | 4 | 3 | 2 | 1 | 4 | 2 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 4 | 5 | 4 | 7 | 6 | 5 | 7 | 10 | 4 | 2 | 4 | 2 | 3 | 4 | 1 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 6 | 4 |
| PPT | 2 | 7 | 7 | 2 | 1 | 4 | 3 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 1 | 2 | 3 | 7 | 1 | 3 | 7 | 7 | 5 | 5 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 1 | 2 | 3 | 1 | 3 | 14 | 12 | 4 | 8 | 8 | 5 | 3 | 1 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 |
| RES | 9 | 11 | 9 | 9 | 15 | 5 | 6 | 7 | 10 | 20 | 5 | 11 | 16 | 26 | 48 | 53 | 39 | 62 | 64 | 26 | 50 | 24 | 27 | 9 |
| SBA | 14 | 13 | 14 | 29 | 16 | 10 | 13 | 12 | 11 | 14 | 13 | 7 | 12 | 16 | 13 | 19 | 9 | 13 | 11 | 9 | 22 | 7 | 18 | 16 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 6 | 9 | 6 | 6 | 15 | 11 | 11 | 5 | 8 | 51 | 24 | 12 | 3 | 4 | 6 | 5 | 3 | 3 | 2 | 1 | 3 | 4 | 7 | 5 |
| SJG | 1 | 4 | 1 | 1 | 2 | 1 | 3 | 1 | 1 | 1 | 2 | 6 | 2 | 2 | 4 | 5 | 2 | 3 | 1 | 3 | 3 | 1 | 4 | 0 |
| SOD | 31 | 29 | 45 | 16 | 18 | 14 | 12 | 6 | 6 | 3 | 4 | 5 | 15 | 21 | 17 | 12 | 10 | 76 | 58 | 22 | 9 | 13 | 35 | 32 |
| SPT | 1 | 1 | 1 | 1 | 0 | 1 | 2 | 1 | 6 | 14 | 13 | 3 | 3 | 9 | 7 | 7 | 8 | 4 | 2 | 1 | 1 | 1 | 1 | 1 |
| STJ | 27 | 14 | 10 | 8 | 15 | 17 | 10 | 13 | 12 | 5 | 7 | 12 | 13 | 11 | 3 | 6 | 6 | 5 | 11 | 3 | 6 | 4 | 4 | 8 |
| SUA | ||||||||||||||||||||||||
| TAM | 1 | 1 | 1 | 1 | 1 | 6 | 4 | 3 | 14 | 21 | 11 | 21 | 5 | 3 | 1 | 1 | 2 | 5 | 2 | 1 | 1 | 0 | 1 | 1 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 12 | 28 | 8 | 5 | 13 | 5 | 13 | 15 | 14 | 14 | 9 | 32 | 64 | 121 | 56 | 51 | 42 | 37 | 22 | 8 | 13 | 6 | 6 | 9 |
| THY | 1 | 3 | 1 | 2 | 1 | 2 | 1 | 8 | 9 | 6 | 2 | 3 | 3 | 8 | 7 | 6 | 1 | 2 | 1 | 1 | 0 | 1 | 1 | 1 |
| TRW | 2 | 3 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 4 | 1 | 3 | 6 | 7 | 3 | 7 | 4 | 1 | 1 | 2 | 1 | 1 |
| TSU | 4 | 3 | 1 | 1 | 3 | 2 | 1 | 2 | 14 | 8 | 3 | 3 | 1 | 2 | 10 | 7 | 3 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| TUC | 4 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 2 | 2 | 1 | 5 | 6 | 8 | 2 | 2 | 3 | 4 | 4 | 3 |
| UPS | 6 | 16 | 12 | 3 | 4 | 2 | 5 | 2 | 5 | 7 | 2 | 2 | 7 | 10 | 6 | 6 | 4 | 3 | 4 | 4 | 3 | 2 | 7 | 7 |
| VAL | 15 | 10 | 2 | 4 | 3 | 4 | 5 | 6 | 4 | 8 | 13 | 9 | 5 | 12 | 14 | 13 | 9 | 10 | 7 | 6 | 6 | 1 | 5 | 5 |
| VIC | 7 | 5 | 2 | 2 | 2 | 4 | 6 | 4 | 3 | 10 | 3 | 5 | 2 | 4 | 4 | 2 | 2 | 2 | 1 | 1 | 3 | 5 | 4 | 4 |
| VSS | 7 | 8 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 3 | 7 | 9 | 4 | 9 | 12 | 5 | 4 | 1 | 2 | 1 | 2 | 1 | 1 |
| WNG | 6 | 3 | 3 | 3 | 2 | 1 | 1 | 3 | 9 | 11 | 4 | 3 | 9 | 10 | 5 | 7 | 7 | 5 | 8 | 1 | 3 | 1 | 4 | 5 |
| YKC | 57 | 52 | 55 | 70 | 116 | 90 | 149 | 178 | 146 | 62 | 98 | 38 | 30 | 55 | 21 | 20 | 17 | 17 | 8 | 16 | 8 | 4 | 17 | 15 |
- Date modified: