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 | 1 | 2 | 7 | 4 | 8 | 4 | 5 | 4 | 7 | 10 | 1 | 4 | 5 | 4 | 3 | 1 | 4 | 2 | 4 | 3 | 3 | 2 | 5 |
| ABG | 8 | 11 | 5 | 6 | 9 | 16 | 21 | 14 | 4 | 14 | 8 | 6 | 5 | 2 | 2 | 3 | 2 | 3 | 1 | 2 | 3 | 2 | 2 | 4 |
| ABK | 8 | 12 | 9 | 8 | 25 | 6 | 10 | 7 | 19 | 11 | 15 | 13 | 7 | 10 | 8 | 6 | 11 | 9 | 8 | 32 | 40 | 20 | 18 | 96 |
| AIA | 8 | 3 | 19 | 10 | 14 | 4 | 14 | 11 | 4 | 5 | 3 | 2 | 2 | 2 | 2 | 10 | 4 | 4 | 4 | 5 | 7 | 5 | 3 | 8 |
| AMS | 3 | 3 | 5 | 9 | 8 | 4 | 11 | 11 | 7 | 3 | 4 | 8 | 3 | 2 | 5 | 4 | 4 | 5 | 2 | 10 | 11 | 6 | 5 | 12 |
| API | 2 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 | 1 | 1 |
| AQU | 3 | 3 | 8 | 5 | 9 | 6 | 6 | 7 | 5 | 7 | 14 | 20 | 11 | 6 | 5 | 8 | 8 | 8 | 4 | 10 | 3 | 3 | 4 | 9 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 6 | 14 | 16 | 14 | 2 | 7 | 10 | 11 | 5 | 1 | 1 | 4 | 2 | 2 | 2 | 1 | 1 |
| ASP | 4 | 5 | 13 | 10 | 6 | 9 | 2 | 7 | 7 | 3 | 2 | 2 | 2 | 2 | 4 | 3 | 4 | 3 | 2 | 7 | 4 | 5 | 11 | 5 |
| BDV | 3 | 5 | 10 | 7 | 8 | 4 | 8 | 3 | 9 | 7 | 14 | 19 | 7 | 4 | 6 | 9 | 8 | 9 | 5 | 11 | 4 | 3 | 4 | 10 |
| BEL | 4 | 5 | 9 | 5 | 10 | 7 | 5 | 5 | 13 | 10 | 18 | 15 | 2 | 3 | 7 | 12 | 7 | 7 | 4 | 16 | 6 | 4 | 7 | 9 |
| BFE | 5 | 6 | 14 | 12 | 12 | 3 | 7 | 4 | 9 | 7 | 14 | 17 | 4 | 3 | 5 | 7 | 9 | 9 | 6 | 18 | 9 | 7 | 6 | 14 |
| BFO | ||||||||||||||||||||||||
| BLC | 32 | 32 | 186 | 230 | 41 | 28 | 35 | 28 | 27 | 32 | 21 | 23 | 35 | 37 | 32 | 37 | 60 | 32 | 39 | 59 | 43 | 87 | 51 | 77 |
| BMT | 1 | 2 | 3 | 2 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 2 | 1 |
| BNG | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 3 | 5 | 20 | 16 | 6 | 4 | 11 | 5 | 3 | 2 | 3 | 5 | 7 | 13 | 6 | 10 | 30 | 23 | 8 | 2 | 5 | 12 | 3 | 8 |
| BOX | 2 | 6 | 6 | 5 | 10 | 3 | 3 | 4 | 15 | 20 | 18 | 6 | 6 | 8 | 8 | 8 | 4 | 4 | 5 | 23 | 12 | 6 | 10 | 18 |
| BRW | 19 | 25 | 39 | 32 | 16 | 27 | 29 | 38 | 34 | 32 | 125 | 43 | 67 | 59 | 59 | 66 | 94 | 68 | 38 | 34 | 66 | 41 | 56 | 32 |
| BSL | 2 | 3 | 6 | 6 | 4 | 2 | 4 | 5 | 5 | 2 | 5 | 11 | 10 | 8 | 15 | 15 | 20 | 11 | 5 | 3 | 7 | 12 | 8 | 4 |
| CBB | 49 | 30 | 75 | 59 | 25 | 14 | 31 | 25 | 20 | 40 | 10 | 26 | 20 | 31 | 41 | 29 | 98 | 48 | 48 | 58 | 48 | 84 | 69 | 74 |
| CLF | 5 | 4 | 13 | 9 | 9 | 4 | 7 | 9 | 4 | 9 | 12 | 18 | 13 | 10 | 5 | 5 | 10 | 10 | 8 | 12 | 7 | 4 | 6 | 17 |
| CMO | 6 | 11 | 15 | 12 | 10 | 10 | 16 | 28 | 15 | 13 | 18 | 12 | 26 | 12 | 19 | 20 | 15 | 11 | 13 | 26 | 35 | 15 | 25 | 16 |
| CNB | 6 | 12 | 16 | 10 | 2 | 2 | 8 | 7 | 2 | 4 | 4 | 2 | 3 | 2 | 8 | 4 | 7 | 5 | 3 | 7 | 5 | 7 | 14 | 4 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 13 | 8 | 11 | 8 | 4 | 6 | 10 | 3 | 4 | 2 | 1 | 1 | 2 | 5 | 3 | 4 | 3 | 2 | 5 | 3 | 8 | 16 | 2 |
| CZT | 4 | 3 | 12 | 11 | 11 | 4 | 6 | 8 | 7 | 8 | 4 | 4 | 4 | 5 | 5 | 3 | 3 | 3 | 3 | 14 | 13 | 3 | 2 | 11 |
| DLR | 2 | 4 | 8 | 8 | 3 | 2 | 4 | 2 | 3 | 1 | 2 | 4 | 11 | 20 | 7 | 24 | 25 | 15 | 3 | 3 | 6 | 10 | 4 | 4 |
| DOU | 5 | 5 | 13 | 9 | 11 | 3 | 7 | 7 | 4 | 9 | 12 | 21 | 12 | 9 | 5 | 7 | 10 | 9 | 8 | 13 | 7 | 4 | 5 | 18 |
| DRV | 24 | 41 | 47 | 38 | 37 | 19 | 19 | 11 | 15 | 11 | 22 | 21 | 24 | 19 | 24 | 16 | 36 | 17 | 14 | 35 | 25 | 31 | 52 | 42 |
| EBR | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 0 | 0 | 2 |
| ESK | 6 | 6 | 16 | 12 | 12 | 3 | 6 | 7 | 6 | 9 | 7 | 15 | 16 | 10 | 7 | 3 | 10 | 7 | 9 | 14 | 11 | 4 | 9 | 26 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 12 | 6 | 6 | 4 | 4 | 8 | 5 | 3 | 4 | 4 | 3 | 5 | 2 | 8 | 6 | 5 | 5 | 3 | 4 | 6 | 8 | 6 | 6 |
| FCC | 11 | 8 | 73 | 105 | 50 | 31 | 139 | 74 | 23 | 17 | 11 | 13 | 12 | 15 | 9 | 17 | 32 | 21 | 14 | 12 | 21 | 11 | 24 | 31 |
| FRD | 2 | 2 | 4 | 4 | 4 | 2 | 8 | 10 | 7 | 2 | 10 | 12 | 3 | 10 | 16 | 17 | 16 | 6 | 2 | 3 | 14 | 9 | 5 | 3 |
| FRN | 5 | 4 | 15 | 9 | 5 | 2 | 11 | 7 | 1 | 1 | 3 | 4 | 5 | 9 | 13 | 13 | 12 | 23 | 24 | 13 | 1 | 2 | 5 | 6 |
| FUR | 4 | 5 | 10 | 8 | 9 | 5 | 9 | 3 | 7 | 7 | 14 | 20 | 10 | 6 | 6 | 8 | 9 | 10 | 5 | 12 | 4 | 4 | 5 | 12 |
| GCK | ||||||||||||||||||||||||
| GDH | 42 | 70 | 85 | 51 | 27 | 19 | 60 | 31 | 94 | 76 | 45 | 30 | 53 | 52 | 54 | 27 | 71 | 57 | 34 | 33 | 51 | 35 | 57 | 28 |
| GNA | 15 | 5 | 12 | 20 | 5 | 3 | 4 | 2 | 10 | 9 | 4 | 3 | 4 | 3 | 3 | 4 | 5 | 5 | 5 | 18 | 6 | 10 | 5 | 6 |
| GUA | 8 | 9 | 2 | 5 | 9 | 13 | 4 | 2 | 5 | 2 | 2 | 1 | 2 | 1 | 2 | 2 | 3 | 1 | 1 | 4 | 5 | 2 | 7 | 9 |
| GUI | 3 | 2 | 6 | 5 | 3 | 1 | 7 | 12 | 4 | 3 | 9 | 12 | 14 | 10 | 15 | 4 | 10 | 12 | 13 | 11 | 2 | 3 | 1 | 7 |
| GZH | 0 | 1 | 2 | 2 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 |
| HAD | 5 | 4 | 14 | 10 | 9 | 4 | 5 | 8 | 5 | 7 | 9 | 12 | 16 | 12 | 6 | 1 | 9 | 10 | 9 | 12 | 8 | 4 | 5 | 20 |
| HBK | 2 | 1 | 5 | 7 | 1 | 6 | 5 | 4 | 3 | 9 | 3 | 7 | 8 | 3 | 8 | 6 | 3 | 3 | 2 | 5 | 3 | 4 | 2 | 3 |
| HER | 3 | 1 | 6 | 8 | 3 | 2 | 7 | 7 | 6 | 5 | 9 | 10 | 7 | 3 | 6 | 5 | 3 | 2 | 1 | 4 | 2 | 5 | 1 | 5 |
| HLP | 5 | 6 | 9 | 6 | 11 | 7 | 5 | 4 | 12 | 8 | 17 | 15 | 3 | 5 | 7 | 10 | 8 | 6 | 4 | 17 | 7 | 6 | 12 | 13 |
| HON | 12 | 11 | 8 | 3 | 6 | 1 | 2 | 3 | 1 | 1 | 3 | 1 | 3 | 2 | 3 | 4 | 11 | 13 | 2 | 11 | 15 | 14 | 12 | 3 |
| HRB | 3 | 4 | 9 | 6 | 8 | 6 | 5 | 4 | 10 | 8 | 17 | 18 | 5 | 2 | 7 | 11 | 6 | 8 | 4 | 12 | 5 | 3 | 5 | 9 |
| HRN | 61 | 48 | 30 | 56 | 91 | 46 | 57 | 37 | 47 | 22 | 67 | 37 | 32 | 59 | 60 | 21 | 37 | 25 | 12 | 36 | 45 | 76 | 30 | 64 |
| HUA | 2 | 1 | 2 | 4 | 3 | 1 | 2 | 1 | 3 | 3 | 7 | 6 | 4 | 6 | 10 | 6 | 6 | 3 | 8 | 11 | 1 | 3 | 3 | 7 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 67 | 43 | 227 | 274 | 116 | 24 | 35 | 39 | 59 | 58 | 22 | 17 | 19 | 35 | 47 | 15 | 63 | 48 | 42 | 62 | 77 | 57 | 46 | 58 |
| IRT | 10 | 5 | 15 | 18 | 14 | 6 | 6 | 4 | 5 | 9 | 6 | 7 | 3 | 4 | 3 | 4 | 6 | 4 | 5 | 6 | 4 | 3 | 12 | 12 |
| IZN | ||||||||||||||||||||||||
| KAK | 2 | 2 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 2 |
| KDU | 6 | 6 | 11 | 8 | 10 | 12 | 3 | 7 | 8 | 4 | 1 | 2 | 1 | 1 | 3 | 2 | 3 | 2 | 1 | 4 | 3 | 4 | 13 | 7 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 3 | 2 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 2 |
| KOU | 1 | 2 | 2 | 4 | 1 | 1 | 2 | 4 | 4 | 3 | 3 | 2 | 7 | 12 | 12 | 8 | 4 | 3 | 3 | 10 | 18 | 3 | 3 | 2 |
| LER | 6 | 6 | 16 | 13 | 15 | 4 | 6 | 4 | 5 | 6 | 8 | 16 | 12 | 9 | 6 | 3 | 9 | 6 | 6 | 13 | 12 | 7 | 7 | 27 |
| LRM | 17 | 8 | 13 | 13 | 9 | 8 | 6 | 3 | 10 | 12 | 4 | 1 | 3 | 2 | 3 | 4 | 4 | 3 | 2 | 10 | 5 | 7 | 4 | 5 |
| LVV | 4 | 5 | 8 | 5 | 9 | 7 | 5 | 4 | 12 | 10 | 21 | 12 | 2 | 4 | 10 | 12 | 5 | 6 | 4 | 14 | 5 | 3 | 6 | 9 |
| LYC | ||||||||||||||||||||||||
| LZH | 15 | 6 | 15 | 22 | 18 | 9 | 3 | 7 | 7 | 6 | 5 | 2 | 2 | 3 | 2 | 3 | 4 | 3 | 2 | 4 | 3 | 2 | 16 | 10 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 3 | 4 | 3 | 2 | 2 | 7 | 12 | 4 | 11 | 13 | 17 | 5 | 5 | 7 | 6 | 7 | 13 | 12 | 6 | 2 | 3 | 2 | 5 |
| MCQ | 7 | 10 | 9 | 8 | 6 | 4 | 8 | 6 | 4 | 11 | 14 | 7 | 23 | 6 | 18 | 19 | 10 | 12 | 5 | 9 | 8 | 14 | 17 | 11 |
| MEA | 5 | 8 | 40 | 31 | 14 | 11 | 37 | 19 | 4 | 4 | 9 | 9 | 11 | 14 | 6 | 6 | 17 | 16 | 20 | 19 | 8 | 15 | 14 | 9 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 2 |
| NAQ | 24 | 10 | 102 | 87 | 17 | 13 | 9 | 15 | 19 | 6 | 16 | 8 | 21 | 18 | 17 | 18 | 8 | 13 | 11 | 11 | 26 | 24 | 20 | 34 |
| NCK | 3 | 4 | 9 | 6 | 8 | 5 | 5 | 3 | 8 | 8 | 14 | 17 | 5 | 3 | 6 | 9 | 6 | 7 | 4 | 11 | 4 | 3 | 5 | 9 |
| NEW | 4 | 7 | 29 | 20 | 9 | 5 | 24 | 15 | 2 | 2 | 5 | 6 | 8 | 10 | 7 | 5 | 9 | 19 | 21 | 14 | 6 | 6 | 4 | 6 |
| NGK | 5 | 6 | 12 | 9 | 10 | 5 | 7 | 4 | 7 | 9 | 14 | 20 | 5 | 4 | 6 | 7 | 9 | 10 | 5 | 14 | 6 | 3 | 6 | 12 |
| NUR | 4 | 6 | 7 | 6 | 11 | 8 | 6 | 4 | 10 | 13 | 14 | 12 | 2 | 5 | 7 | 9 | 8 | 2 | 4 | 23 | 11 | 4 | 9 | 19 |
| NVS | 6 | 8 | 5 | 10 | 11 | 12 | 19 | 7 | 5 | 7 | 4 | 8 | 8 | 6 | 5 | 5 | 5 | 3 | 4 | 11 | 9 | 6 | 11 | 14 |
| OTT | 5 | 3 | 11 | 8 | 9 | 3 | 15 | 16 | 10 | 3 | 9 | 9 | 7 | 12 | 18 | 21 | 20 | 2 | 4 | 5 | 15 | 10 | 8 | 5 |
| PAF | 5 | 4 | 10 | 11 | 13 | 3 | 13 | 4 | 6 | 4 | 3 | 4 | 5 | 4 | 6 | 4 | 6 | 3 | 7 | 30 | 28 | 6 | 6 | 22 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 6 | 9 | 14 | 21 | 18 | 3 | 5 | 7 | 8 | 3 | 2 | 1 | 2 | 2 | 2 | 3 | 3 | 2 | 2 | 5 | 3 | 2 | 18 | 8 |
| PPT | 9 | 2 | 9 | 7 | 2 | 3 | 3 | 1 | 1 | 1 | 3 | 2 | 2 | 2 | 4 | 2 | 3 | 13 | 17 | 13 | 7 | 9 | 11 | 15 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 3 | 2 | 6 | 12 | 9 | 3 | 11 | 18 | 13 | 15 | 6 | 4 | 10 | 6 | 7 | 2 | 5 | 2 | 8 | 3 | 3 | 4 | 7 |
| RES | 23 | 40 | 60 | 54 | 30 | 21 | 13 | 12 | 16 | 45 | 24 | 26 | 14 | 32 | 39 | 90 | 146 | 104 | 59 | 109 | 49 | 51 | 19 | 37 |
| SBA | 21 | 18 | 24 | 31 | 19 | 13 | 40 | 24 | 23 | 18 | 10 | 12 | 13 | 36 | 27 | 28 | 23 | 14 | 34 | 45 | 32 | 36 | 24 | 35 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 7 | 7 | 22 | 14 | 7 | 6 | 23 | 23 | 6 | 4 | 13 | 5 | 16 | 15 | 14 | 11 | 6 | 9 | 16 | 29 | 28 | 11 | 9 | 9 |
| SJG | 2 | 1 | 1 | 3 | 1 | 1 | 3 | 4 | 4 | 6 | 13 | 2 | 7 | 3 | 13 | 15 | 11 | 6 | 2 | 6 | 10 | 5 | 2 | 4 |
| SOD | 5 | 11 | 6 | 8 | 16 | 5 | 8 | 5 | 16 | 13 | 12 | 8 | 5 | 10 | 10 | 6 | 9 | 6 | 7 | 41 | 22 | 7 | 12 | 38 |
| SPT | 3 | 3 | 9 | 6 | 4 | 5 | 6 | 9 | 4 | 6 | 11 | 14 | 13 | 13 | 6 | 2 | 11 | 9 | 10 | 9 | 4 | 3 | 2 | 12 |
| STJ | 7 | 2 | 7 | 14 | 5 | 2 | 8 | 11 | 14 | 4 | 8 | 7 | 7 | 10 | 16 | 20 | 10 | 9 | 5 | 11 | 20 | 7 | 4 | 3 |
| SUA | 3 | 4 | 6 | 4 | 9 | 9 | 3 | 2 | 9 | 15 | 21 | 10 | 2 | 4 | 10 | 11 | 4 | 5 | 4 | 10 | 3 | 3 | 4 | 4 |
| TAM | 2 | 3 | 6 | 2 | 4 | 7 | 3 | 3 | 6 | 6 | 13 | 11 | 7 | 4 | 5 | 4 | 9 | 11 | 4 | 5 | 2 | 3 | 2 | 7 |
| TAN | 1 | 1 | 4 | 4 | 9 | 8 | 2 | 3 | 6 | 11 | 6 | 2 | 2 | 4 | 8 | 1 | 2 | 3 | 2 | 5 | 4 | 1 | 1 | 3 |
| TDC | ||||||||||||||||||||||||
| THL | 15 | 35 | 22 | 14 | 27 | 28 | 30 | 9 | 23 | 24 | 19 | 63 | 40 | 67 | 52 | 30 | 78 | 44 | 53 | 45 | 27 | 15 | 22 | 54 |
| THY | 3 | 4 | 9 | 6 | 8 | 7 | 6 | 4 | 9 | 9 | 16 | 18 | 7 | 3 | 7 | 11 | 6 | 8 | 4 | 12 | 5 | 3 | 6 | 9 |
| TRW | 3 | 1 | 5 | 5 | 5 | 1 | 4 | 2 | 2 | 3 | 2 | 2 | 11 | 9 | 3 | 18 | 15 | 6 | 2 | 7 | 8 | 4 | 1 | 4 |
| TSU | 2 | 1 | 3 | 5 | 1 | 4 | 8 | 7 | 4 | 7 | 2 | 13 | 7 | 3 | 3 | 6 | 5 | 2 | 2 | 4 | 2 | 5 | 1 | 3 |
| TUC | 4 | 5 | 12 | 9 | 4 | 2 | 7 | 4 | 3 | 1 | 2 | 4 | 7 | 18 | 15 | 8 | 32 | 26 | 12 | 3 | 8 | 6 | 4 | 8 |
| UPS | 4 | 6 | 9 | 5 | 12 | 7 | 4 | 4 | 10 | 9 | 13 | 15 | 2 | 3 | 5 | 7 | 9 | 5 | 4 | 19 | 9 | 3 | 8 | 12 |
| VAL | 6 | 4 | 14 | 11 | 9 | 3 | 7 | 7 | 5 | 5 | 6 | 13 | 13 | 17 | 6 | 2 | 7 | 6 | 9 | 13 | 8 | 4 | 6 | 24 |
| VIC | 5 | 8 | 27 | 14 | 9 | 3 | 22 | 15 | 1 | 2 | 6 | 6 | 9 | 11 | 8 | 10 | 5 | 13 | 26 | 26 | 7 | 4 | 5 | 4 |
| VSS | 1 | 1 | 2 | 4 | 3 | 1 | 3 | 2 | 3 | 10 | 15 | 16 | 8 | 9 | 5 | 4 | 8 | 5 | 2 | 4 | 3 | 5 | 2 | 5 |
| WNG | 5 | 6 | 13 | 11 | 12 | 3 | 7 | 4 | 6 | 7 | 16 | 19 | 6 | 5 | 5 | 5 | 10 | 9 | 5 | 16 | 8 | 4 | 7 | 15 |
| YKC | 13 | 24 | 75 | 35 | 22 | 76 | 158 | 84 | 26 | 25 | 23 | 12 | 20 | 28 | 22 | 16 | 28 | 20 | 19 | 26 | 26 | 25 | 31 | 38 |
- Date modified: