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 | 5 | 3 | 7 | 11 | 8 | 9 | 3 | 10 | 10 | 3 | 3 | 2 | 7 | 5 | 1 | 6 | 3 | 3 | 1 | 3 | 2 | 3 | 4 | 2 |
| ABG | 5 | 5 | 2 | 7 | 13 | 19 | 13 | 4 | 8 | 10 | 9 | 4 | 2 | 5 | 2 | 1 | 3 | 2 | 1 | 2 | 2 | 2 | 2 | 2 |
| ABK | 166 | 50 | 19 | 18 | 12 | 14 | 20 | 13 | 11 | 8 | 9 | 7 | 6 | 4 | 8 | 4 | 8 | 14 | 10 | 23 | 14 | 53 | 82 | 23 |
| AIA | 14 | 10 | 9 | 6 | 5 | 10 | 13 | 7 | 6 | 12 | 10 | 5 | 3 | 3 | 3 | 4 | 6 | 5 | 4 | 3 | 4 | 7 | 7 | 2 |
| AMS | 6 | 8 | 2 | 5 | 7 | 5 | 7 | 4 | 7 | 8 | 5 | 11 | 2 | 2 | 2 | 1 | 6 | 8 | 3 | 6 | 4 | 2 | 6 | 3 |
| API | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 0 | 0 |
| AQU | 4 | 2 | 2 | 7 | 8 | 2 | 5 | 9 | 12 | 12 | 11 | 8 | 3 | 4 | 5 | 6 | 8 | 6 | 1 | 5 | 3 | 6 | 5 | 2 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 1 | 1 | 2 | 1 | 5 | 4 | 6 | 21 | 16 | 6 | 7 | 7 | 14 | 2 | 13 | 6 | 2 | 5 | 4 | 1 | 1 | 2 | 1 |
| ASP | 3 | 2 | 11 | 7 | 10 | 5 | 4 | 10 | 10 | 2 | 2 | 1 | 3 | 2 | 2 | 1 | 3 | 4 | 4 | 3 | 1 | 6 | 10 | 19 |
| BDV | 7 | 2 | 4 | 9 | 4 | 3 | 5 | 10 | 14 | 13 | 9 | 9 | 2 | 5 | 6 | 5 | 4 | 7 | 1 | 6 | 5 | 8 | 9 | 3 |
| BEL | 11 | 7 | 7 | 7 | 3 | 4 | 7 | 9 | 19 | 13 | 9 | 8 | 3 | 8 | 8 | 5 | 6 | 7 | 3 | 9 | 7 | 10 | 11 | 3 |
| BFE | 13 | 4 | 6 | 11 | 4 | 4 | 10 | 11 | 16 | 11 | 7 | 7 | 3 | 6 | 5 | 3 | 6 | 11 | 3 | 6 | 8 | 11 | 17 | 3 |
| BFO | ||||||||||||||||||||||||
| BLC | 22 | 31 | 16 | 35 | 16 | 31 | 29 | 23 | 16 | 42 | 23 | 29 | 38 | 25 | 23 | 25 | 26 | 27 | 21 | 24 | 68 | 91 | 31 | 18 |
| BMT | 1 | 1 | 2 | 2 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 4 | 5 | 4 | 4 | 9 | 12 | 11 | 6 | 3 | 5 | 6 | 7 | 6 | 7 | 6 | 8 | 15 | 17 | 10 | 3 | 9 | 3 | 8 | 10 |
| BOX | 18 | 17 | 6 | 4 | 3 | 6 | 9 | 12 | 16 | 13 | 9 | 2 | 11 | 9 | 10 | 4 | 7 | 7 | 7 | 11 | 6 | 14 | 15 | 6 |
| BRW | 30 | 42 | 49 | 56 | 47 | 50 | 66 | 43 | 30 | 44 | 82 | 64 | 51 | 71 | 55 | 54 | 53 | 56 | 79 | 33 | 14 | 35 | 32 | 25 |
| BSL | 5 | 5 | 3 | 4 | 6 | 8 | 6 | 4 | 3 | 4 | 10 | 10 | 7 | 13 | 7 | 22 | 20 | 13 | 5 | 5 | 10 | 5 | 12 | 8 |
| CBB | 33 | 23 | 15 | 21 | 23 | 33 | 31 | 31 | 14 | 16 | 17 | 16 | 38 | 28 | 16 | 37 | 21 | 44 | 46 | 49 | 72 | 108 | 60 | 57 |
| CLF | 7 | 4 | 3 | 7 | 4 | 9 | 7 | 8 | 9 | 12 | 11 | 18 | 2 | 5 | 4 | 5 | 8 | 9 | 2 | 6 | 5 | 6 | 8 | 3 |
| CMO | 17 | 14 | 12 | 20 | 29 | 18 | 22 | 16 | 13 | 37 | 22 | 21 | 10 | 18 | 8 | 9 | 13 | 14 | 14 | 22 | 10 | 26 | 15 | 10 |
| CNB | 8 | 8 | 12 | 3 | 2 | 8 | 7 | 6 | 3 | 6 | 3 | 2 | 4 | 4 | 5 | 3 | 8 | 7 | 2 | 2 | 2 | 5 | 9 | 6 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 10 | 11 | 3 | 3 | 4 | 6 | 10 | 4 | 3 | 2 | 1 | 2 | 2 | 3 | 1 | 3 | 4 | 4 | 1 | 3 | 6 | 13 | 12 |
| CZT | 12 | 7 | 4 | 3 | 4 | 6 | 7 | 5 | 8 | 12 | 4 | 6 | 9 | 4 | 4 | 2 | 3 | 6 | 2 | 5 | 3 | 10 | 11 | 8 |
| DLR | 2 | 3 | 2 | 2 | 5 | 6 | 4 | 3 | 2 | 2 | 5 | 6 | 7 | 7 | 7 | 13 | 19 | 9 | 5 | 5 | 6 | 6 | 8 | 9 |
| DOU | 7 | 4 | 3 | 8 | 5 | 7 | 8 | 9 | 9 | 11 | 10 | 16 | 3 | 4 | 4 | 5 | 8 | 10 | 1 | 6 | 5 | 7 | 9 | 3 |
| DRV | 16 | 22 | 30 | 34 | 24 | 10 | 14 | 9 | 9 | 19 | 26 | 7 | 9 | 11 | 8 | 9 | 23 | 36 | 8 | 8 | 11 | 16 | 29 | 50 |
| EBR | 1 | 1 | 0 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 0 | 1 | 1 | 1 | 2 | 2 | 0 | 1 | 0 | 1 | 1 | 0 |
| ESK | 13 | 7 | 4 | 9 | 7 | 10 | 9 | 7 | 3 | 9 | 11 | 18 | 10 | 4 | 4 | 6 | 7 | 9 | 1 | 8 | 6 | 7 | 11 | 4 |
| EUA | ||||||||||||||||||||||||
| EYR | 16 | 10 | 6 | 8 | 6 | 10 | 6 | 2 | 3 | 13 | 7 | 5 | 3 | 4 | 4 | 5 | 6 | 4 | 3 | 3 | 6 | 3 | 5 | 5 |
| FCC | 48 | 40 | 19 | 64 | 42 | 129 | 77 | 70 | 11 | 69 | 74 | 22 | 9 | 11 | 11 | 21 | 22 | 22 | 10 | 12 | 33 | 10 | 17 | 22 |
| FRD | 4 | 4 | 3 | 5 | 5 | 9 | 5 | 2 | 2 | 5 | 14 | 16 | 6 | 5 | 10 | 21 | 20 | 17 | 11 | 3 | 5 | 10 | 10 | 3 |
| FRN | 6 | 5 | 2 | 3 | 7 | 6 | 5 | 3 | 3 | 7 | 2 | 2 | 5 | 5 | 10 | 7 | 5 | 19 | 8 | 10 | 7 | 7 | 4 | 3 |
| FUR | 6 | 2 | 4 | 9 | 5 | 2 | 6 | 10 | 11 | 13 | 10 | 10 | 2 | 3 | 6 | 7 | 5 | 7 | 1 | 6 | 4 | 7 | 9 | 2 |
| GCK | ||||||||||||||||||||||||
| GDH | 18 | 26 | 11 | 14 | 22 | 49 | 36 | 40 | 27 | 46 | 65 | 50 | 62 | 39 | 33 | 43 | 36 | 34 | 20 | 43 | 46 | 33 | 37 | 10 |
| GNA | 4 | 9 | 8 | 5 | 8 | 6 | 9 | 6 | 10 | 5 | 4 | 2 | 5 | 2 | 2 | 3 | 6 | 9 | 6 | 8 | 3 | 6 | 11 | 10 |
| GUA | 14 | 8 | 1 | 8 | 6 | 8 | 8 | 3 | 6 | 2 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 2 | 3 | 1 | 12 | 6 | 17 | 15 |
| GUI | 4 | 2 | 2 | 3 | 4 | 6 | 8 | 5 | 9 | 14 | 15 | 15 | 7 | 5 | 4 | 3 | 5 | 9 | 8 | 5 | 2 | 3 | 2 | 1 |
| GZH | 1 | 1 | 1 | 2 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| HAD | 10 | 5 | 3 | 7 | 5 | 11 | 6 | 4 | 4 | 9 | 13 | 19 | 10 | 3 | 3 | 6 | 5 | 9 | 2 | 6 | 4 | 5 | 7 | 3 |
| HBK | 5 | 2 | 2 | 2 | 5 | 3 | 13 | 10 | 2 | 14 | 7 | 9 | 9 | 1 | 11 | 10 | 2 | 2 | 2 | 2 | 1 | 3 | 6 | 4 |
| HER | 7 | 3 | 2 | 1 | 3 | 3 | 14 | 10 | 4 | 9 | 15 | 10 | 7 | 2 | 6 | 11 | 2 | 2 | 1 | 2 | 1 | 2 | 7 | 4 |
| HLP | 17 | 8 | 8 | 8 | 4 | 3 | 7 | 9 | 18 | 12 | 8 | 8 | 5 | 10 | 8 | 3 | 7 | 8 | 3 | 8 | 7 | 11 | 13 | 4 |
| HON | 9 | 6 | 4 | 1 | 2 | 4 | 4 | 3 | 2 | 3 | 1 | 3 | 2 | 2 | 2 | 7 | 15 | 9 | 6 | 17 | 9 | 14 | 8 | 2 |
| HRB | 7 | 3 | 5 | 9 | 3 | 3 | 4 | 9 | 17 | 13 | 8 | 8 | 3 | 8 | 5 | 5 | 6 | 6 | 2 | 7 | 4 | 8 | 9 | 2 |
| HRN | 80 | 51 | 50 | 107 | 63 | 31 | 59 | 77 | 45 | 43 | 34 | 32 | 42 | 25 | 40 | 25 | 30 | 21 | 35 | 38 | 21 | 34 | 38 | 50 |
| HUA | 2 | 3 | 2 | 1 | 1 | 2 | 3 | 3 | 4 | 3 | 3 | 12 | 3 | 5 | 3 | 3 | 2 | 3 | 9 | 10 | 10 | 3 | 3 | 3 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 39 | 37 | 25 | 21 | 27 | 42 | 64 | 24 | 26 | 46 | 40 | 42 | 52 | 42 | 28 | 34 | 20 | 45 | 32 | 46 | 37 | 76 | 54 | 14 |
| IRT | 9 | 3 | 9 | 18 | 12 | 14 | 8 | 3 | 1 | 5 | 5 | 4 | 3 | 2 | 2 | 3 | 7 | 6 | 1 | 3 | 6 | 10 | 8 | 11 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| KDU | 8 | 3 | 10 | 7 | 13 | 7 | 4 | 7 | 9 | 3 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 2 | 3 | 2 | 1 | 4 | 11 | 21 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 | 1 |
| KOU | 2 | 2 | 1 | 2 | 2 | 4 | 2 | 1 | 6 | 11 | 6 | 8 | 15 | 19 | 14 | 13 | 6 | 7 | 4 | 16 | 12 | 10 | 2 | 1 |
| LER | 13 | 9 | 4 | 11 | 8 | 6 | 11 | 8 | 3 | 7 | 9 | 14 | 8 | 2 | 4 | 2 | 6 | 9 | 2 | 6 | 8 | 7 | 17 | 3 |
| LRM | 9 | 9 | 9 | 4 | 9 | 9 | 10 | 6 | 10 | 7 | 4 | 2 | 4 | 1 | 2 | 2 | 7 | 4 | 6 | 4 | 3 | 5 | 9 | 12 |
| LVV | 10 | 7 | 8 | 8 | 4 | 4 | 8 | 11 | 18 | 14 | 8 | 6 | 4 | 7 | 10 | 7 | 7 | 8 | 6 | 8 | 6 | 10 | 10 | 2 |
| LYC | ||||||||||||||||||||||||
| LZH | 6 | 8 | 12 | 14 | 13 | 7 | 2 | 1 | 3 | 4 | 5 | 2 | 2 | 1 | 1 | 3 | 4 | 3 | 2 | 2 | 3 | 5 | 8 | 16 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 1 | 1 | 2 | 3 | 6 | 6 | 3 | 8 | 15 | 9 | 12 | 2 | 4 | 4 | 4 | 10 | 3 | 1 | 4 | 2 | 2 | 2 | 1 |
| MCQ | 14 | 10 | 3 | 7 | 9 | 16 | 17 | 7 | 4 | 20 | 9 | 9 | 11 | 17 | 10 | 10 | 7 | 11 | 3 | 4 | 3 | 5 | 7 | 6 |
| MEA | 6 | 7 | 10 | 12 | 13 | 45 | 27 | 15 | 4 | 23 | 7 | 5 | 8 | 12 | 8 | 6 | 12 | 19 | 13 | 11 | 4 | 11 | 9 | 10 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 |
| NAQ | 145 | 101 | 50 | 26 | 43 | 51 | 31 | 45 | 8 | 9 | 12 | 9 | 23 | 16 | 13 | 10 | 11 | 10 | 7 | 13 | 12 | 25 | 47 | 33 |
| NCK | 7 | 2 | 4 | 8 | 4 | 3 | 4 | 9 | 15 | 11 | 8 | 8 | 4 | 6 | 4 | 5 | 6 | 5 | 2 | 6 | 4 | 7 | 8 | 2 |
| NEW | ||||||||||||||||||||||||
| NGK | 9 | 3 | 5 | 10 | 3 | 5 | 5 | 10 | 14 | 11 | 9 | 9 | 3 | 7 | 5 | 3 | 5 | 9 | 2 | 6 | 6 | 9 | 12 | 2 |
| NUR | 26 | 16 | 9 | 7 | 5 | 5 | 10 | 9 | 17 | 15 | 8 | 3 | 7 | 6 | 7 | 4 | 8 | 10 | 6 | 11 | 8 | 16 | 19 | 4 |
| NVS | 8 | 9 | 4 | 10 | 9 | 16 | 12 | 10 | 5 | 3 | 5 | 9 | 8 | 4 | 4 | 4 | 12 | 7 | 4 | 4 | 6 | 9 | 8 | 11 |
| OTT | 9 | 5 | 7 | 10 | 8 | 13 | 7 | 3 | 3 | 8 | 20 | 14 | 7 | 10 | 14 | 25 | 21 | 14 | 6 | 6 | 10 | 12 | 12 | 2 |
| PAF | 18 | 17 | 4 | 3 | 4 | 8 | 7 | 5 | 2 | 7 | 3 | 10 | 4 | 3 | 3 | 2 | 4 | 15 | 4 | 14 | 7 | 14 | 20 | 5 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 4 | 7 | 13 | 13 | 10 | 1 | 5 | 3 | 3 | 5 | 3 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 2 | 1 | 2 | 5 | 13 | 11 |
| PPT | 7 | 5 | 6 | 2 | 1 | 4 | 3 | 2 | 1 | 2 | 2 | 3 | 2 | 1 | 1 | 2 | 4 | 4 | 7 | 7 | 3 | 3 | 6 | 10 |
| PST | ||||||||||||||||||||||||
| QSB | 7 | 4 | 8 | 9 | 1 | 6 | 9 | 11 | 17 | 7 | 4 | 1 | 9 | 7 | 5 | 2 | 3 | 5 | 2 | 6 | 2 | 5 | 5 | 2 |
| RES | 19 | 30 | 12 | 16 | 28 | 9 | 11 | 24 | 16 | 11 | 13 | 12 | 24 | 20 | 19 | 29 | 19 | 46 | 41 | 83 | 56 | 29 | 32 | 29 |
| SBA | 19 | 36 | 14 | 12 | 20 | 29 | 37 | 26 | 8 | 19 | 32 | 11 | 17 | 9 | 12 | 14 | 23 | 29 | 15 | 18 | 20 | 15 | 33 | 30 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 3 | 6 | 9 | 4 | 14 | 28 | 34 | 11 | 5 | 17 | 10 | 4 | 11 | 13 | 9 | 6 | 9 | 15 | 6 | 22 | 8 | 16 | 7 | 8 |
| SJG | 2 | 3 | 1 | 3 | 1 | 4 | 2 | 2 | 3 | 4 | 13 | 10 | 7 | 12 | 13 | 15 | 11 | 8 | 4 | 3 | 7 | 9 | 5 | 2 |
| SOD | 74 | 37 | 11 | 11 | 8 | 10 | 15 | 12 | 12 | 10 | 9 | 5 | 8 | 5 | 9 | 4 | 7 | 13 | 8 | 22 | 13 | 40 | 46 | 10 |
| SPT | 5 | 3 | 2 | 4 | 4 | 12 | 6 | 2 | 9 | 14 | 15 | 17 | 4 | 3 | 1 | 4 | 8 | 8 | 2 | 5 | 2 | 4 | 3 | 1 |
| STJ | 10 | 7 | 5 | 4 | 8 | 13 | 12 | 3 | 7 | 5 | 8 | 3 | 17 | 16 | 18 | 16 | 6 | 4 | 6 | 6 | 3 | 11 | 5 | 4 |
| SUA | 6 | 5 | 6 | 7 | 2 | 3 | 6 | 12 | 19 | 13 | 2 | 7 | 5 | 8 | 8 | 5 | 5 | 5 | 2 | 7 | 3 | 5 | 9 | 2 |
| TAM | 2 | 2 | 1 | 3 | 7 | 13 | 5 | 11 | 16 | 9 | 6 | 18 | 3 | 6 | 3 | 10 | 5 | 5 | 2 | 5 | 2 | 4 | 4 | 1 |
| TAN | 2 | 2 | 4 | 9 | 10 | 8 | 8 | 7 | 2 | 12 | 10 | 9 | 4 | 8 | 7 | 2 | 1 | 3 | 1 | 1 | 1 | 2 | 3 | 2 |
| TDC | ||||||||||||||||||||||||
| THL | 31 | 17 | 10 | 16 | 29 | 28 | 19 | 26 | 19 | 18 | 9 | 59 | 22 | 36 | 28 | 40 | 35 | 72 | 29 | 32 | 68 | 13 | 35 | 26 |
| THY | 7 | 3 | 5 | 9 | 4 | 2 | 4 | 9 | 17 | 13 | 8 | 9 | 3 | 7 | 6 | 6 | 7 | 5 | 2 | 7 | 4 | 7 | 8 | 2 |
| TRW | 4 | 3 | 3 | 2 | 2 | 4 | 5 | 2 | 4 | 5 | 3 | 3 | 8 | 9 | 2 | 10 | 12 | 6 | 6 | 5 | 3 | 3 | 3 | 2 |
| TSU | 6 | 3 | 1 | 1 | 3 | 6 | 16 | 13 | 3 | 11 | 7 | 4 | 11 | 7 | 2 | 12 | 5 | 2 | 2 | 2 | 2 | 1 | 5 | 3 |
| TUC | 4 | 1 | 2 | 2 | 6 | 7 | 4 | 3 | 2 | 4 | 3 | 3 | 6 | 5 | 7 | 2 | 11 | 22 | 5 | 1 | 8 | 4 | 2 | 6 |
| UPS | 26 | 10 | 8 | 9 | 5 | 3 | 9 | 9 | 17 | 13 | 7 | 7 | 7 | 6 | 6 | 2 | 7 | 10 | 4 | 9 | 8 | 13 | 19 | 4 |
| VAL | 14 | 7 | 3 | 7 | 7 | 9 | 7 | 3 | 2 | 11 | 12 | 18 | 12 | 5 | 1 | 4 | 6 | 7 | 2 | 7 | 3 | 4 | 7 | 3 |
| VIC | 5 | 6 | 6 | 6 | 8 | 12 | 13 | 4 | 3 | 14 | 6 | 3 | 8 | 9 | 10 | 5 | 9 | 10 | 9 | 16 | 7 | 9 | 4 | 6 |
| VSS | 3 | 2 | 2 | 2 | 2 | 4 | 3 | 2 | 6 | 8 | 13 | 15 | 11 | 4 | 2 | 2 | 6 | 10 | 2 | 2 | 2 | 3 | 3 | 2 |
| WNG | 11 | 2 | 4 | 11 | 4 | 3 | 8 | 11 | 12 | 9 | 11 | 10 | 3 | 5 | 5 | 2 | 5 | 10 | 2 | 6 | 7 | 9 | 13 | 3 |
| YKC | 47 | 37 | 38 | 51 | 63 | 159 | 112 | 49 | 11 | 87 | 85 | 32 | 30 | 23 | 24 | 14 | 15 | 28 | 21 | 18 | 26 | 10 | 19 | 19 |
- Date modified: