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 | 5 | 6 | 9 | 9 | 4 | 2 | 3 | 4 | 7 | 4 | 2 | 5 | 2 | 2 | 2 | 2 | 2 | ||||||
| ABG | 5 | 11 | 4 | 3 | 8 | 17 | 10 | 7 | 2 | 6 | 8 | 6 | 5 | 4 | 2 | 1 | 2 | 1 | 4 | 1 | 1 | 1 | 2 | 3 |
| ABK | 15 | 7 | 8 | 14 | 42 | 35 | 17 | 16 | 18 | 14 | 20 | 13 | 10 | 7 | 7 | 10 | 8 | 5 | 51 | 22 | 8 | 4 | 17 | 7 |
| AIA | 7 | 2 | 2 | 3 | 44 | 33 | 6 | 6 | 5 | 3 | 8 | 4 | 7 | 4 | 5 | 13 | 13 | 8 | 10 | 2 | 4 | 2 | 4 | 7 |
| AMS | 4 | 5 | 9 | 11 | 15 | 3 | 15 | 16 | 10 | 5 | 7 | 4 | 3 | 5 | 2 | 5 | 5 | 1 | 5 | 9 | 2 | 2 | 4 | 5 |
| API | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 |
| AQU | 4 | 1 | 1 | 2 | 13 | 15 | 7 | 5 | 5 | 13 | 14 | 15 | 5 | 2 | 5 | 5 | 5 | 6 | 15 | 9 | 2 | 1 | 4 | 2 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 0 | 2 | 4 | 2 | 2 | 7 | 21 | 12 | 5 | 7 | 5 | 7 | 13 | 4 | 4 | 1 | 3 | 2 | 3 | 2 | 2 | 1 |
| ASP | 7 | 10 | 24 | 23 | 7 | 5 | 5 | 6 | 6 | 4 | 4 | 3 | 2 | 1 | 3 | 6 | 3 | 4 | 12 | 8 | 2 | 5 | 12 | 10 |
| BDV | 4 | 2 | 2 | 3 | 17 | 18 | 8 | 4 | 7 | 9 | 17 | 18 | 8 | 3 | 6 | 8 | 5 | 6 | 20 | 14 | 3 | 1 | 5 | 3 |
| BEL | 5 | 3 | 3 | 4 | 17 | 20 | 10 | 7 | 10 | 14 | 17 | 12 | 6 | 7 | 9 | 10 | 4 | 6 | 21 | 14 | 3 | 2 | 6 | 3 |
| BFE | 6 | 4 | 4 | 5 | 23 | 25 | 11 | 7 | 8 | 9 | 17 | 17 | 10 | 3 | 7 | 10 | 5 | 8 | 30 | 19 | 4 | 2 | 7 | 5 |
| BFO | ||||||||||||||||||||||||
| BLC | 25 | 9 | 9 | 13 | 93 | 56 | 26 | 8 | 21 | 19 | 38 | 26 | 26 | 30 | 56 | 58 | 99 | 54 | 127 | 39 | 65 | 19 | 34 | 21 |
| BMT | 1 | 1 | 2 | 2 | 3 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 9 | 4 | 2 | 5 | 25 | 14 | 2 | 4 | 4 | 6 | 15 | 3 | 10 | 5 | 15 | 11 | 9 | 20 | 22 | 3 | 4 | 1 | 10 | 10 |
| BOX | 4 | 4 | 5 | 7 | 24 | 16 | 9 | 10 | 17 | 15 | 13 | 4 | 8 | 7 | 12 | 9 | 8 | 4 | 15 | 11 | 4 | 2 | 8 | 3 |
| BRW | 40 | 11 | 6 | 22 | 50 | 20 | 12 | 32 | 20 | 37 | 110 | 98 | 21 | 18 | 29 | 82 | 47 | 31 | 58 | 41 | 61 | 49 | 77 | 29 |
| BSL | 5 | 2 | 2 | 3 | 24 | 9 | 3 | 4 | 4 | 4 | 12 | 4 | 13 | 8 | 8 | 20 | 13 | 7 | 15 | 4 | 3 | 9 | 13 | 5 |
| CBB | 39 | 13 | 9 | 15 | 55 | 44 | 27 | 9 | 13 | 12 | 36 | 21 | 38 | 27 | 43 | 29 | 70 | 105 | 132 | 56 | 118 | 30 | 64 | 23 |
| CLF | 7 | 2 | 2 | 4 | 20 | 18 | 9 | 6 | 5 | 5 | 11 | 22 | 15 | 5 | 4 | 6 | 6 | 7 | 23 | 13 | 3 | 1 | 5 | 3 |
| CMO | 16 | 7 | 7 | 21 | 13 | 15 | 11 | 10 | 12 | 12 | 21 | 13 | 7 | 16 | 24 | 32 | 34 | 21 | 23 | 15 | 33 | 12 | 32 | 10 |
| CNB | 5 | 17 | 22 | 18 | 9 | 10 | 9 | 2 | 4 | 3 | 3 | 3 | 4 | 2 | 3 | 6 | 7 | 5 | 15 | 10 | 3 | 11 | 8 | 3 |
| CSY | ||||||||||||||||||||||||
| CTA | 9 | 26 | 15 | 12 | 6 | 8 | 5 | 3 | 4 | 5 | 3 | 2 | 2 | 2 | 3 | 5 | 3 | 4 | 11 | 7 | 2 | 17 | 10 | 6 |
| CZT | 8 | 1 | 1 | 8 | 23 | 24 | 10 | 16 | 16 | 10 | 7 | 6 | 4 | 8 | 3 | 4 | 3 | 4 | 23 | 13 | 2 | 3 | 4 | 4 |
| DLR | 9 | 2 | 2 | 3 | 16 | 7 | 1 | 2 | 2 | 3 | 9 | 2 | 7 | 11 | 12 | 10 | 18 | 13 | 13 | 3 | 5 | 5 | 11 | 9 |
| DOU | 7 | 2 | 2 | 4 | 22 | 20 | 10 | 6 | 6 | 6 | 13 | 21 | 16 | 4 | 4 | 9 | 6 | 7 | 25 | 15 | 3 | 2 | 6 | 4 |
| DRV | 79 | 37 | 24 | 48 | 48 | 35 | 27 | 32 | 19 | 14 | 19 | 9 | 11 | 10 | 8 | 11 | 18 | 20 | 51 | 36 | 18 | 35 | 82 | 45 |
| EBR | 0 | 0 | 0 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 1 |
| ESK | 11 | 3 | 3 | 5 | 26 | 23 | 10 | 7 | 8 | 6 | 14 | 15 | 15 | 10 | 9 | 7 | 6 | 4 | 31 | 16 | 4 | 2 | 7 | 6 |
| EUA | ||||||||||||||||||||||||
| EYR | 21 | 13 | 6 | 4 | 14 | 5 | 5 | 4 | 4 | 5 | 5 | 4 | 6 | 4 | 5 | 8 | 6 | 6 | 10 | 8 | 7 | 11 | 7 | 11 |
| FCC | 14 | 6 | 4 | 12 | 193 | 60 | 13 | 9 | 20 | 14 | 49 | 13 | 23 | 24 | 26 | 27 | 52 | 19 | 65 | 18 | 31 | 9 | 17 | 11 |
| FRD | 4 | 2 | 1 | 2 | 26 | 10 | 3 | 5 | 5 | 4 | 13 | 6 | 10 | 6 | 7 | 16 | 18 | 13 | 10 | 1 | 6 | 10 | 8 | 4 |
| FRN | 11 | 9 | 3 | 5 | 11 | 8 | 1 | 2 | 3 | 4 | 8 | 2 | 5 | 3 | 11 | 11 | 6 | 12 | 33 | 9 | 1 | 7 | 4 | 4 |
| FUR | 4 | 2 | 2 | 3 | 17 | 18 | 8 | 5 | 5 | 11 | 16 | 18 | 9 | 2 | 5 | 7 | 6 | 7 | 21 | 14 | 2 | 1 | 4 | 3 |
| GCK | ||||||||||||||||||||||||
| GDH | 29 | 22 | 7 | 18 | 120 | 61 | 46 | 33 | 61 | 63 | 144 | 46 | 71 | 43 | 69 | 60 | 51 | 53 | 88 | 36 | 27 | 13 | 28 | 22 |
| GNA | 14 | 4 | 6 | 19 | 19 | 5 | 10 | 7 | 5 | 5 | 4 | 2 | 3 | 2 | 5 | 14 | 4 | 5 | 21 | 15 | 3 | 4 | 9 | 10 |
| GUA | 5 | 11 | 12 | 4 | 6 | 9 | 9 | 6 | 3 | 3 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 2 | 4 | 3 | 7 | 6 | 6 | 5 |
| GUI | 2 | 1 | 1 | 2 | 10 | 6 | 2 | 5 | 6 | 4 | 10 | 12 | 7 | 7 | 4 | 3 | 7 | 4 | 13 | 3 | 2 | 1 | 2 | 2 |
| GZH | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 |
| HAD | 8 | 2 | 2 | 4 | 21 | 17 | 8 | 7 | 6 | 5 | 11 | 16 | 15 | 8 | 5 | 6 | 6 | 4 | 25 | 12 | 3 | 2 | 5 | 4 |
| HBK | 4 | 1 | 1 | 2 | 7 | 20 | 21 | 8 | 19 | 28 | 14 | 4 | 4 | 6 | 6 | 9 | 5 | 3 | 9 | 5 | 2 | 1 | 2 | 1 |
| HER | 4 | 1 | 1 | 2 | 8 | 10 | 15 | 14 | 8 | 24 | 23 | 19 | 6 | 5 | 5 | 7 | 5 | 4 | 9 | 6 | 2 | 1 | 2 | 1 |
| HLP | 7 | 3 | 3 | 4 | 21 | 21 | 9 | 5 | 13 | 16 | 17 | 15 | 7 | 7 | 10 | 5 | 4 | 6 | 25 | 16 | 4 | 2 | 8 | 3 |
| HON | 12 | 9 | 8 | 3 | 5 | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 3 | 2 | 9 | 22 | 12 | 3 | 19 | 25 | 17 | 6 |
| HRB | 4 | 2 | 2 | 3 | 15 | 19 | 8 | 4 | 10 | 14 | 17 | 13 | 6 | 5 | 7 | 8 | 4 | 6 | 19 | 13 | 3 | 1 | 5 | 3 |
| HRN | 69 | 23 | 23 | 49 | 85 | 56 | 61 | 62 | 73 | 47 | 60 | 18 | 48 | 34 | 44 | 39 | 25 | 39 | 159 | 136 | 17 | 25 | 27 | 50 |
| HUA | 3 | 1 | 1 | 2 | 8 | 6 | 2 | 3 | 1 | 3 | 4 | 3 | 4 | 8 | 7 | 6 | 10 | 6 | 12 | 4 | 3 | 3 | 2 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 32 | 20 | 25 | 14 | 134 | 59 | 37 | 38 | 43 | 61 | 116 | 49 | 47 | 43 | 62 | 61 | 68 | 51 | 63 | 47 | 31 | 11 | 24 | 28 |
| IRT | 14 | 2 | 5 | 16 | 24 | 10 | 13 | 4 | 6 | 8 | 7 | 6 | 6 | 3 | 6 | 11 | 6 | 2 | 10 | 11 | 4 | 2 | 7 | 6 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 |
| KDU | 6 | 12 | 25 | 17 | 5 | 3 | 5 | 4 | 3 | 5 | 4 | 2 | 1 | 1 | 2 | 4 | 2 | 3 | 9 | 5 | 1 | 4 | 12 | 9 |
| KMH | ||||||||||||||||||||||||
| KNY | 0 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 |
| KOU | 1 | 1 | 1 | 2 | 2 | 5 | 1 | 3 | 2 | 5 | 9 | 12 | 9 | 3 | 9 | 13 | 6 | 3 | 8 | 2 | ||||
| LER | 11 | 2 | 3 | 5 | 26 | 27 | 11 | 8 | 8 | 9 | 14 | 11 | 15 | 6 | 7 | 8 | 6 | 3 | 35 | 23 | 4 | 2 | 7 | 7 |
| LRM | 17 | 6 | 7 | 25 | 20 | 4 | 5 | 7 | 5 | 6 | 5 | 2 | 2 | 2 | 4 | 9 | 8 | 4 | 12 | 6 | 2 | 4 | 5 | 16 |
| LVV | 4 | 2 | 3 | 4 | 16 | 18 | 7 | 8 | 12 | 17 | 16 | 9 | 5 | 6 | 11 | 11 | 4 | 6 | 19 | 12 | 3 | 2 | 5 | 3 |
| LYC | ||||||||||||||||||||||||
| LZH | 14 | 4 | 11 | 19 | 20 | 14 | 5 | 6 | 7 | 9 | 5 | 1 | 2 | 3 | 4 | 5 | ||||||||
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 1 | 1 | 3 | 9 | 3 | 4 | 4 | 11 | 2 | 4 | 8 | 8 | 8 | 5 | 2 | 10 | 7 | 9 | 5 | 2 | 2 | 2 | 2 |
| MCQ | 9 | 11 | 10 | 24 | 23 | 19 | 7 | 9 | 3 | 4 | 12 | 11 | 11 | 3 | 5 | 19 | 10 | 11 | 18 | 7 | 6 | 18 | 19 | 7 |
| MEA | 14 | 8 | 4 | 11 | 21 | 16 | 4 | 6 | 10 | 11 | 20 | 7 | 12 | 7 | 9 | 9 | 29 | 10 | 39 | 12 | 13 | 5 | 8 | 4 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 1 |
| NAQ | 27 | 9 | 10 | 6 | 176 | 97 | 16 | 9 | 33 | 18 | 51 | 13 | 26 | 17 | 13 | 18 | 17 | 16 | 36 | 9 | 14 | 6 | 12 | 25 |
| NCK | 5 | 2 | 2 | 3 | 16 | 18 | 8 | 4 | 10 | 12 | 18 | 14 | 6 | 4 | 7 | 8 | 4 | 6 | 20 | 13 | 3 | 2 | 5 | 3 |
| NEW | ||||||||||||||||||||||||
| NGK | 6 | 3 | 2 | 4 | 20 | 22 | 9 | 5 | 7 | 12 | 16 | 18 | 9 | 4 | 7 | 8 | 5 | 8 | 26 | 17 | 3 | 2 | 6 | 4 |
| NUR | 6 | 3 | 5 | 6 | 26 | 22 | 9 | 6 | 11 | 12 | 14 | 13 | 5 | 4 | 10 | 9 | 4 | 4 | 28 | 15 | 5 | 2 | 9 | 3 |
| NVS | 9 | 6 | 7 | 7 | 27 | 12 | 16 | 15 | 7 | 7 | 9 | 9 | 8 | 6 | 8 | 10 | 16 | 5 | 11 | 7 | 5 | 4 | 8 | 6 |
| OTT | 4 | 2 | 2 | 3 | 41 | 17 | 6 | 7 | 10 | 7 | 19 | 9 | 12 | 7 | 13 | 19 | 17 | 13 | 9 | 4 | 8 | 7 | 9 | 6 |
| PAF | 4 | 4 | 8 | 9 | 26 | 14 | 14 | 18 | 10 | 5 | 11 | 5 | 3 | 6 | 5 | 7 | 3 | 3 | 17 | 21 | 4 | 2 | 4 | 7 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 10 | 2 | 11 | 18 | 14 | 7 | 2 | 5 | 5 | 5 | 6 | 2 | 2 | 2 | 3 | 4 | 3 | 2 | 6 | 3 | ||||
| PPT | 4 | 1 | 1 | 5 | 5 | 3 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 3 | 3 | 11 | 14 | 4 | 2 | 9 | 7 | 6 |
| PST | ||||||||||||||||||||||||
| QSB | 3 | 1 | 1 | 7 | 9 | 14 | 3 | 14 | 24 | 13 | 6 | 2 | 5 | 5 | 12 | 2 | 5 | 4 | 9 | 5 | 2 | 2 | 4 | 2 |
| RES | 26 | 17 | 20 | 19 | 64 | 46 | 20 | 16 | 17 | 20 | 30 | 16 | 19 | 21 | 26 | 55 | 44 | 93 | 125 | 105 | 57 | 36 | 39 | 15 |
| SBA | 83 | 25 | 29 | 53 | 36 | 35 | 23 | 21 | 21 | 12 | 32 | 15 | 19 | 29 | 32 | 38 | 31 | 37 | 38 | 30 | 57 | 31 | 77 | 57 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 11 | 11 | 12 | 17 | 11 | 13 | 8 | 6 | 9 | 10 | 12 | 7 | 8 | 9 | 12 | 15 | 24 | 15 | 32 | 9 | 22 | 9 | 16 | 4 |
| SJG | 3 | 1 | 1 | 1 | 6 | 2 | 2 | 2 | 2 | 3 | 9 | 7 | 4 | 6 | 3 | 12 | 16 | 10 | 3 | 9 | 11 | 6 | 2 | 3 |
| SOD | 6 | 5 | 6 | 9 | 35 | 26 | 15 | 13 | 15 | 13 | 17 | 11 | 7 | 4 | 7 | 9 | 7 | 5 | 32 | 14 | 8 | 3 | 12 | 6 |
| SPT | 3 | 1 | 1 | 2 | 15 | 9 | 6 | 8 | 7 | 4 | 8 | 16 | 14 | 6 | 4 | 1 | 4 | 7 | 16 | 6 | 2 | 1 | 2 | 3 |
| STJ | 3 | 3 | 2 | 3 | 23 | 11 | 6 | 6 | 10 | 6 | 20 | 8 | 9 | 4 | 12 | 17 | 15 | 7 | 16 | 9 | 9 | 3 | 4 | 7 |
| SUA | ||||||||||||||||||||||||
| TAM | 2 | 1 | 1 | 2 | 11 | 6 | 6 | 3 | 4 | 9 | 16 | 10 | 4 | 4 | 7 | 7 | 4 | 2 | 7 | 4 | 3 | 1 | 2 | 2 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 43 | 25 | 14 | 40 | 40 | 37 | 18 | 15 | 24 | 25 | 36 | 20 | 24 | 23 | 48 | 85 | 88 | 66 | 70 | 36 | 24 | 32 | 29 | 24 |
| THY | 5 | 2 | 2 | 3 | 15 | 18 | 7 | 4 | 10 | 13 | 17 | 13 | 6 | 5 | 7 | 8 | 4 | 6 | 19 | 12 | 3 | 1 | 5 | 3 |
| TRW | 4 | 2 | 1 | 3 | 15 | 12 | 2 | 4 | 2 | 2 | 2 | 2 | 2 | 3 | ||||||||||
| TSU | 3 | 1 | 1 | 2 | 4 | 12 | 22 | 14 | 12 | 24 | 17 | 11 | 6 | 3 | 2 | 10 | 7 | 4 | 7 | 3 | 1 | 2 | 1 | 1 |
| TUC | 10 | 4 | 1 | 4 | 15 | 8 | 1 | 2 | 3 | 4 | 9 | 2 | 6 | 7 | 17 | 6 | 11 | 26 | 21 | 2 | 3 | 3 | 8 | 10 |
| UPS | 7 | 3 | 4 | 5 | 25 | 24 | 10 | 7 | 10 | 10 | 16 | 15 | 9 | 4 | 8 | 9 | 5 | 4 | 31 | 18 | 5 | 2 | 8 | 4 |
| VAL | 7 | 2 | 2 | 4 | 22 | 16 | 7 | 6 | 10 | 5 | 9 | 9 | 16 | 11 | 6 | 5 | 4 | 2 | 22 | 9 | 3 | 2 | 4 | 4 |
| VIC | 11 | 10 | 8 | 10 | 7 | 10 | 3 | 4 | 6 | 7 | 10 | 4 | 6 | 5 | 5 | 10 | 13 | 6 | 26 | 10 | 9 | 5 | 7 | 3 |
| VSS | 2 | 2 | 1 | 2 | 7 | 5 | 2 | 4 | 1 | 7 | 18 | 13 | 3 | 13 | 14 | 3 | 4 | 3 | 2 | 11 | 6 | 2 | 3 | 3 |
| WNG | 7 | 3 | 3 | 4 | 22 | 24 | 9 | 6 | 8 | 9 | 15 | 20 | 12 | 3 | 6 | 7 | 5 | 7 | 29 | 18 | 3 | 1 | 7 | 5 |
| YKC | 8 | 9 | 7 | 21 | 33 | 60 | 38 | 29 | 20 | 20 | 21 | 12 | 25 | 15 | 25 | 20 | 54 | 27 | 68 | 27 | 37 | 16 | 30 | 11 |
- Date modified: