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 | 2 | 5 | 11 | 18 | 5 | 13 | 14 | 9 | 7 | 5 | 2 | 3 | 4 | 8 | 3 | 9 | 3 | 2 | 5 | 2 | 2 | 2 | 6 | 2 |
| ABG | 11 | 15 | 4 | 19 | 18 | 18 | 7 | 2 | 7 | 9 | 8 | 6 | 2 | 4 | 2 | 2 | 1 | 2 | 4 | 1 | 1 | 2 | 4 | 1 |
| ABK | 125 | 30 | 30 | 32 | 17 | 20 | 7 | 17 | 13 | 17 | 13 | 9 | 12 | 7 | 9 | 13 | 7 | 9 | 5 | 17 | 11 | 16 | 39 | 45 |
| AIA | 6 | 15 | 9 | 10 | 14 | 33 | 12 | 7 | 5 | 3 | 2 | 4 | 5 | 3 | 3 | 4 | 4 | 2 | 4 | 1 | 3 | 2 | 4 | 5 |
| AMS | 4 | 7 | 4 | 4 | 6 | 6 | 8 | 8 | 6 | 4 | 3 | 8 | 3 | 2 | 2 | 2 | 2 | 1 | 2 | 4 | 1 | 3 | 4 | 3 |
| API | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| AQU | 4 | 3 | 3 | 9 | 13 | 6 | 2 | 14 | 19 | 16 | 12 | 7 | 9 | 8 | 9 | 10 | 5 | 2 | 2 | 3 | 2 | 4 | 9 | 4 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 2 | 4 | 5 | 4 | 6 | 4 | 16 | 14 | 6 | 13 | 6 | 18 | 19 | 9 | 4 | 8 | 8 | 2 | 1 | 2 | 2 | 1 |
| ASP | 7 | 3 | 6 | 8 | 9 | 4 | 1 | 7 | 3 | 2 | 1 | 1 | 3 | 4 | 5 | 1 | 2 | 2 | 1 | 2 | 1 | 1 | 6 | 11 |
| BDV | 5 | 5 | 4 | 10 | 12 | 8 | 3 | 14 | 17 | 14 | 13 | 9 | 9 | 6 | 9 | 10 | 6 | 2 | 3 | 3 | 3 | 4 | 12 | 6 |
| BEL | 4 | 7 | 4 | 12 | 9 | 8 | 3 | 16 | 18 | 15 | 12 | 6 | 7 | 8 | 12 | 10 | 6 | 4 | 4 | 6 | 5 | 5 | 12 | 10 |
| BFE | 7 | 8 | 8 | 13 | 12 | 12 | 4 | 12 | 12 | 16 | 14 | 10 | 7 | 5 | 11 | 11 | 4 | 2 | 2 | 6 | 5 | 6 | 16 | 11 |
| BFO | ||||||||||||||||||||||||
| BLC | 41 | 71 | 60 | 46 | 50 | 102 | 32 | 28 | 15 | 17 | 29 | 17 | 37 | 38 | 59 | 55 | 35 | 32 | 53 | 59 | 20 | 67 | 44 | 58 |
| BMT | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 |
| BNG | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 8 | 7 | 13 | 12 | 14 | 14 | 8 | 9 | 7 | 2 | 4 | 8 | 6 | 7 | 7 | 9 | 10 | 14 | 10 | 12 | 9 | 11 | 10 | 6 |
| BOX | 6 | 11 | 6 | 6 | 6 | 9 | 5 | 17 | 15 | 16 | 6 | 4 | 10 | 8 | 9 | 6 | 5 | 4 | 6 | 6 | 3 | 6 | 13 | 9 |
| BRW | 55 | 118 | 47 | 79 | 117 | 65 | 43 | 46 | 22 | 23 | 9 | 13 | 92 | 115 | 72 | 56 | 35 | 20 | 19 | 46 | 22 | 31 | 59 | 94 |
| BSL | 5 | 6 | 8 | 13 | 11 | 14 | 4 | 6 | 6 | 2 | 5 | 12 | 8 | 5 | 13 | 11 | 7 | 10 | 13 | 7 | 4 | 5 | 6 | 6 |
| CBB | 45 | 96 | 31 | 31 | 28 | 88 | 31 | 24 | 20 | 23 | 32 | 21 | 36 | 21 | 27 | 56 | 42 | 57 | 84 | 122 | 33 | 143 | 129 | 68 |
| CLF | 7 | 5 | 5 | 9 | 11 | 9 | 6 | 6 | 12 | 17 | 15 | 14 | 8 | 4 | 8 | 10 | 4 | 6 | 4 | 4 | 3 | 6 | 12 | 5 |
| CMO | 25 | 41 | 24 | 25 | 52 | 33 | 33 | 33 | 22 | 5 | 4 | 5 | 32 | 55 | 53 | 17 | 10 | 8 | 15 | 31 | 10 | 18 | 26 | 31 |
| CNB | 3 | 7 | 5 | 5 | 7 | 5 | 7 | 5 | 1 | 2 | 0 | 1 | 8 | 6 | 8 | 2 | 3 | 3 | 1 | 3 | 2 | 3 | 5 | 3 |
| CSY | ||||||||||||||||||||||||
| CTA | 4 | 6 | 4 | 3 | 9 | 3 | 6 | 4 | 1 | 2 | 0 | 0 | 4 | 3 | 5 | 1 | 2 | 3 | 1 | 2 | 4 | 4 | 9 | 6 |
| CZT | 2 | 8 | 14 | 4 | 5 | 13 | 16 | 5 | 6 | 13 | 5 | 1 | 6 | 3 | 4 | 2 | 4 | 3 | 2 | 2 | 4 | 4 | 3 | 4 |
| DLR | 2 | 4 | 6 | 8 | 8 | 8 | 4 | 4 | 5 | 2 | 3 | 8 | 10 | 7 | 4 | 9 | 13 | 15 | 10 | 8 | 2 | 8 | 6 | 4 |
| DOU | 8 | 5 | 6 | 10 | 13 | 11 | 6 | 6 | 14 | 18 | 15 | 13 | 9 | 5 | 8 | 11 | 4 | 4 | 3 | 4 | 4 | 6 | 13 | 6 |
| DRV | 81 | 78 | 48 | 38 | 33 | 37 | 33 | 18 | 7 | 7 | 6 | 12 | 20 | 11 | 23 | 16 | 12 | 19 | 26 | 8 | 7 | 15 | 21 | 60 |
| EBR | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 |
| ESK | 11 | 6 | 7 | 11 | 14 | 12 | 5 | 7 | 9 | 11 | 13 | 17 | 11 | 4 | 8 | 10 | 4 | 6 | 8 | 6 | 4 | 7 | 15 | 6 |
| EUA | ||||||||||||||||||||||||
| EYR | 9 | 8 | 6 | 8 | 7 | 9 | 4 | 9 | 5 | 3 | 2 | 2 | 8 | 10 | 3 | 4 | 4 | 3 | 2 | 3 | 2 | 6 | 3 | 11 |
| FCC | 46 | 65 | 152 | 118 | 85 | 110 | 42 | 78 | 11 | 8 | 14 | 11 | 15 | 13 | 16 | 24 | 16 | 17 | 33 | 20 | 10 | 25 | 23 | 36 |
| FRD | 5 | 4 | 5 | 20 | 13 | 15 | 3 | 4 | 7 | 5 | 7 | 7 | 12 | 14 | 10 | 7 | 5 | 13 | 7 | 4 | 5 | 9 | 4 | 8 |
| FRN | 9 | 3 | 6 | 7 | 7 | 4 | 5 | 6 | 3 | 2 | 3 | 4 | 5 | 7 | 5 | 6 | 3 | 11 | 22 | 9 | 8 | 1 | 2 | 3 |
| FUR | 5 | 5 | 5 | 10 | 13 | 9 | 3 | 13 | 17 | 17 | 12 | 8 | 8 | 5 | 9 | 11 | 6 | 2 | 2 | 3 | 3 | 5 | 12 | 6 |
| GCK | ||||||||||||||||||||||||
| GDH | 39 | 27 | 39 | 34 | 33 | 60 | 21 | 23 | 16 | 49 | 51 | 36 | 79 | 57 | 36 | 30 | 41 | 31 | 55 | 34 | 40 | 34 | 27 | 59 |
| GNA | 10 | 7 | 5 | 10 | 8 | 5 | 5 | 7 | 4 | 6 | 2 | 1 | 3 | 7 | 8 | 4 | 4 | 3 | 3 | 4 | 3 | 3 | 6 | 13 |
| GUA | 8 | 5 | 5 | 3 | 5 | 14 | 5 | 2 | 4 | 3 | 0 | 1 | 1 | 1 | 2 | 1 | 2 | 4 | 2 | 2 | 6 | 4 | 6 | 7 |
| GUI | 3 | 3 | 3 | 6 | 5 | 4 | 8 | 5 | 3 | 8 | 15 | 12 | 7 | 4 | 5 | 3 | 3 | 3 | 8 | 2 | 2 | 4 | 5 | 2 |
| GZH | 1 | 1 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| HAD | 8 | 5 | 4 | 9 | 10 | 9 | 6 | 3 | 9 | 12 | 13 | 14 | 12 | 3 | 8 | 6 | 2 | 4 | 4 | 4 | 3 | 6 | 10 | 4 |
| HBK | 2 | 4 | 6 | 3 | 10 | 11 | 22 | 15 | 5 | 14 | 4 | 8 | 12 | 7 | 6 | 9 | 5 | 3 | 3 | 2 | 2 | 3 | 3 | 2 |
| HER | 2 | 4 | 6 | 3 | 6 | 3 | 13 | 16 | 7 | 3 | 6 | 12 | 11 | 11 | 2 | 8 | 5 | 3 | 2 | 2 | 2 | 2 | 2 | 2 |
| HLP | 4 | 8 | 5 | 13 | 11 | 8 | 3 | 15 | 17 | 14 | 13 | 7 | 7 | 7 | 9 | 12 | 5 | 4 | 6 | 6 | 4 | 4 | 15 | 11 |
| HON | 6 | 4 | 2 | 5 | 2 | 7 | 5 | 4 | 1 | 1 | 3 | 3 | 4 | 2 | 2 | 2 | 9 | 12 | 6 | 20 | 18 | 7 | 3 | 1 |
| HRB | 4 | 5 | 4 | 11 | 11 | 8 | 2 | 14 | 18 | 16 | 14 | 6 | 8 | 8 | 12 | 11 | 5 | 2 | 3 | 4 | 3 | 4 | 11 | 7 |
| HRN | 68 | 58 | 69 | 67 | 122 | 185 | 24 | 51 | 12 | 32 | 16 | 36 | 84 | 40 | 17 | 31 | 25 | 43 | 13 | 39 | 41 | 46 | 41 | 40 |
| HUA | 3 | 2 | 2 | 2 | 2 | 4 | 4 | 3 | 2 | 2 | 2 | 3 | 11 | 8 | 4 | 3 | 9 | 5 | 9 | 4 | 2 | 4 | 4 | 1 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 59 | 57 | 85 | 47 | 77 | 77 | 53 | 35 | 13 | 15 | 23 | 18 | 45 | 44 | 50 | 37 | 30 | 27 | 49 | 48 | 27 | 26 | 21 | 52 |
| IRT | 5 | 13 | 14 | 21 | 16 | 9 | 3 | 4 | 9 | 6 | 6 | 6 | 5 | 3 | 3 | 4 | 2 | 4 | 7 | 4 | 3 | 5 | 9 | 11 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 2 | 2 | 1 | 0 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| KDU | 12 | 3 | 10 | 7 | 7 | 5 | 2 | 2 | 2 | 3 | 1 | 0 | 2 | 2 | 4 | 1 | 2 | 3 | 1 | 2 | 1 | 6 | 8 | 17 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 1 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| KOU | 2 | 2 | 1 | 6 | 3 | 2 | 1 | 2 | 4 | 7 | 4 | 13 | 10 | 13 | 8 | 4 | 4 | 4 | 5 | 10 | 7 | 5 | 2 | 3 |
| LER | 12 | 6 | 8 | 14 | 17 | 12 | 5 | 8 | 8 | 11 | 12 | 17 | 12 | 2 | 6 | 9 | 4 | 4 | 7 | 5 | 4 | 6 | 16 | 8 |
| LRM | 11 | 7 | 5 | 9 | 8 | 4 | 11 | 4 | 3 | 5 | 1 | 1 | 3 | 5 | 4 | 2 | 3 | 2 | 3 | 3 | 2 | 3 | 7 | 12 |
| LVV | 4 | 7 | 5 | 14 | 8 | 6 | 4 | 20 | 18 | 14 | 13 | 3 | 7 | 9 | 13 | 11 | 4 | 4 | 7 | 6 | 4 | 5 | 12 | 7 |
| LYC | ||||||||||||||||||||||||
| LZH | 5 | 10 | 15 | 20 | 13 | 5 | 2 | 6 | 5 | 7 | 7 | 1 | 4 | 2 | 2 | 3 | 2 | 4 | 5 | 3 | 2 | 4 | 9 | 12 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 2 | 3 | 6 | 5 | 5 | 8 | 5 | 7 | 9 | 9 | 6 | 10 | 3 | 10 | 6 | 6 | 4 | 6 | 2 | 2 | 4 | 5 | 2 |
| MCQ | 5 | 18 | 8 | 9 | 16 | 26 | 17 | 11 | 8 | 2 | 1 | 3 | 33 | 42 | 32 | 6 | 6 | 3 | 6 | 6 | 3 | 5 | 8 | 5 |
| MEA | 10 | 16 | 23 | 21 | 30 | 42 | 22 | 20 | 12 | 4 | 7 | 7 | 10 | 14 | 10 | 14 | 9 | 11 | 25 | 21 | 9 | 11 | 12 | 18 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 1 | 2 | 2 | 2 | 0 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 |
| NAQ | 42 | 43 | 75 | 79 | 153 | 100 | 34 | 8 | 11 | 13 | 10 | 10 | 26 | 22 | 10 | 10 | 11 | 16 | 18 | 23 | 8 | 8 | 17 | 28 |
| NCK | 4 | 5 | 4 | 10 | 11 | 7 | 3 | 13 | 16 | 14 | 12 | 6 | 8 | 7 | 10 | 10 | 5 | 2 | 3 | 4 | 3 | 4 | 12 | 6 |
| NEW | ||||||||||||||||||||||||
| NGK | 6 | 7 | 6 | 12 | 11 | 11 | 4 | 13 | 14 | 15 | 15 | 10 | 7 | 5 | 10 | 12 | 6 | 2 | 2 | 4 | 3 | 6 | 14 | 8 |
| NUR | 4 | 9 | 6 | 12 | 8 | 10 | 3 | 11 | 17 | 16 | 16 | 5 | 9 | 5 | 9 | 8 | 3 | 5 | 6 | 6 | 4 | 5 | 15 | 11 |
| NVS | 6 | 15 | 6 | 11 | 22 | 23 | 5 | 7 | 2 | 4 | 7 | 9 | 6 | 5 | 4 | 6 | 4 | 5 | 9 | 7 | 3 | 7 | 13 | 4 |
| OTT | 7 | 6 | 14 | 36 | 24 | 25 | 4 | 6 | 10 | 6 | 7 | 6 | 17 | 10 | 16 | 8 | 8 | 9 | 9 | 8 | 6 | 13 | 5 | 7 |
| PAF | 6 | 6 | 14 | 11 | 9 | 15 | 14 | 10 | 6 | 1 | 2 | 6 | 4 | 3 | 5 | 3 | 5 | 2 | 2 | 5 | 5 | 6 | 5 | 4 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 4 | 10 | 17 | 13 | 7 | 5 | 4 | 4 | 9 | 5 | 4 | 1 | 3 | 1 | 2 | 2 | 2 | 3 | 3 | 1 | 2 | 4 | 14 | 13 |
| PPT | 13 | 2 | 9 | 7 | 3 | 3 | 3 | 3 | 2 | 1 | 2 | 2 | 2 | 3 | 1 | 2 | 6 | 5 | 14 | 6 | 1 | 6 | 11 | 10 |
| PST | ||||||||||||||||||||||||
| QSB | 3 | 5 | 8 | 17 | 8 | 9 | 16 | 23 | 14 | 4 | 3 | 2 | 7 | 9 | 7 | 3 | 5 | 3 | 6 | 3 | 2 | 3 | 8 | 4 |
| RES | 28 | 75 | 27 | 22 | 13 | 97 | 26 | 33 | 14 | 27 | 18 | 24 | 18 | 22 | 20 | 36 | 61 | 60 | 84 | 90 | 53 | 55 | 46 | 55 |
| SBA | 44 | 40 | 35 | 37 | 35 | 24 | 13 | 28 | 22 | 13 | 10 | 9 | 30 | 12 | 13 | 42 | 32 | 29 | 35 | 39 | 21 | 42 | 51 | 31 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 11 | 12 | 14 | 19 | 18 | 46 | 15 | 24 | 8 | 4 | 5 | 3 | 11 | 14 | 25 | 12 | 7 | 7 | 24 | 25 | 6 | 11 | 12 | 8 |
| SJG | 2 | 2 | 2 | 8 | 5 | 3 | 1 | 2 | 4 | 6 | 10 | 5 | 12 | 10 | 6 | 7 | 4 | 3 | 3 | 3 | 5 | 4 | 2 | 4 |
| SOD | 36 | 15 | 9 | 13 | 12 | 18 | 5 | 15 | 13 | 17 | 13 | 8 | 15 | 5 | 9 | 11 | 6 | 8 | 6 | 10 | 9 | 10 | 26 | 16 |
| SPT | 4 | 3 | 2 | 6 | 7 | 6 | 8 | 3 | 4 | 14 | 19 | 12 | 10 | 2 | 6 | 6 | 3 | 2 | 4 | 2 | 2 | 5 | 7 | 3 |
| STJ | 7 | 9 | 6 | 15 | 5 | 8 | 7 | 3 | 9 | 11 | 6 | 3 | 15 | 20 | 15 | 9 | 8 | 5 | 9 | 11 | 6 | 5 | 3 | 5 |
| SUA | 3 | 5 | 3 | 13 | 5 | 7 | 6 | 17 | 16 | 15 | 8 | 4 | 8 | 9 | 11 | 11 | 3 | 3 | 5 | 3 | 3 | 5 | 9 | 6 |
| TAM | 3 | 2 | 3 | 6 | 11 | 6 | 2 | 12 | 14 | 16 | 15 | 6 | 8 | 10 | 8 | 9 | 3 | 3 | 2 | 2 | 2 | 4 | 7 | 3 |
| TAN | 1 | 3 | 7 | 6 | 12 | 16 | 5 | 10 | 4 | 9 | 10 | 2 | 3 | 6 | 6 | 2 | 3 | 2 | 1 | 1 | 2 | 3 | 3 | 1 |
| TDC | ||||||||||||||||||||||||
| THL | 31 | 67 | 35 | 20 | 11 | 91 | 19 | 28 | 11 | 21 | 14 | 14 | 79 | 27 | 34 | 207 | 67 | 153 | 61 | 51 | 29 | 63 | 54 | 55 |
| THY | 4 | 5 | 4 | 12 | 12 | 7 | 3 | 14 | 18 | 16 | 14 | 6 | 9 | 8 | 11 | 11 | 5 | 2 | 3 | 4 | 3 | 4 | 12 | 7 |
| TRW | 2 | 6 | 3 | 3 | 4 | 10 | 5 | 4 | 1 | 1 | 1 | 7 | 10 | 8 | 4 | 20 | 15 | 2 | 6 | 3 | 6 | 2 | 2 | 2 |
| TSU | 2 | 4 | 4 | 4 | 9 | 5 | 18 | 18 | 7 | 6 | 7 | 7 | 10 | 10 | 2 | 4 | 9 | 4 | 2 | 2 | 2 | 2 | 3 | 2 |
| TUC | 5 | 4 | 7 | 6 | 8 | 6 | 4 | 5 | 4 | 2 | 3 | 5 | 9 | 10 | 2 | 10 | 9 | 15 | 18 | 4 | 3 | 5 | 3 | 1 |
| UPS | 4 | 8 | 7 | 14 | 9 | 9 | 3 | 10 | 13 | 17 | 12 | 10 | 7 | 4 | 10 | 10 | 4 | 4 | 5 | 6 | 4 | 5 | 15 | 12 |
| VAL | 9 | 5 | 4 | 10 | 10 | 9 | 4 | 3 | 2 | 5 | 16 | 17 | 14 | 6 | 5 | 6 | 2 | 4 | 7 | 4 | 2 | 6 | 8 | 4 |
| VIC | 11 | 5 | 10 | 14 | 9 | 11 | 9 | 9 | 2 | 3 | 4 | 4 | 5 | 10 | 9 | 12 | 6 | 8 | 22 | 11 | 5 | 3 | 2 | 1 |
| VSS | 1 | 2 | 2 | 3 | 4 | 2 | 4 | 2 | 2 | 3 | 11 | 11 | 6 | 8 | 4 | 4 | 6 | 5 | 2 | 4 | 4 | 3 | 2 | 2 |
| WNG | 7 | 7 | 7 | 12 | 14 | 11 | 4 | 9 | 12 | 20 | 13 | 11 | 8 | 4 | 11 | 10 | 4 | 3 | 4 | 5 | 4 | 6 | 16 | 9 |
| YKC | 55 | 43 | 86 | 66 | 73 | 42 | 30 | 176 | 17 | 14 | 16 | 5 | 24 | 42 | 19 | 20 | 22 | 15 | 42 | 49 | 11 | 30 | 34 | 61 |
- Date modified: