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 | 3 | 2 | 7 | 13 | 4 | 10 | 9 | 13 | 4 | 4 | 9 | 4 | 3 | 3 | 2 | 2 | 4 | 3 | 2 | 2 | 2 | 2 | 3 | 1 |
| ABG | 8 | 8 | 6 | 12 | 19 | 15 | 11 | 6 | 3 | 1 | 7 | 12 | 6 | 3 | 1 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| ABK | 65 | 38 | 15 | 26 | 28 | 31 | 12 | 7 | 13 | 12 | 11 | 9 | 18 | 13 | 5 | 6 | 29 | 9 | 6 | 7 | 6 | 9 | 8 | 21 |
| AIA | 5 | 7 | 11 | 19 | 21 | 21 | 18 | 7 | 5 | 2 | 2 | 5 | 4 | 17 | 4 | 14 | 4 | 3 | 3 | 3 | 3 | 2 | 3 | 2 |
| AMS | 10 | 8 | 5 | 8 | 9 | 6 | 4 | 6 | 5 | 1 | 4 | 3 | 3 | 5 | 4 | 5 | 9 | 4 | 2 | 2 | 2 | 2 | 2 | 2 |
| API | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| AQU | 8 | 7 | 5 | 2 | 6 | 12 | 5 | 2 | 6 | 14 | 14 | 12 | 6 | 9 | 2 | 8 | 12 | 3 | 1 | 2 | 2 | 4 | 4 | 4 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 3 | 2 | 1 | 4 | 4 | 4 | 4 | 16 | 15 | 8 | 4 | 2 | 15 | 14 | 4 | 3 | 4 | 2 | 2 | 1 | 1 | 2 | 1 |
| ASP | 3 | 8 | 18 | 7 | 13 | 7 | 4 | 9 | 6 | 2 | 2 | 8 | 5 | 10 | 2 | 4 | 10 | 1 | 2 | 1 | 1 | 2 | 12 | 12 |
| BDV | 11 | 10 | 6 | 4 | 4 | 13 | 5 | 3 | 6 | 14 | 12 | 14 | 6 | 11 | 3 | 6 | 15 | 4 | 2 | 3 | 2 | 5 | 5 | 5 |
| BEL | 13 | 12 | 5 | 5 | 6 | 15 | 5 | 6 | 11 | 16 | 17 | 9 | 4 | 13 | 6 | 8 | 16 | 5 | 3 | 3 | 2 | 5 | 6 | 6 |
| BFE | 16 | 14 | 9 | 7 | 6 | 17 | 4 | 6 | 9 | 11 | 10 | 14 | 5 | 13 | 4 | 5 | 19 | 5 | 3 | 4 | 2 | 7 | 7 | 8 |
| BFO | ||||||||||||||||||||||||
| BLC | 80 | 58 | 75 | 316 | 32 | 40 | 48 | 31 | 17 | 12 | 17 | 13 | 41 | 71 | 48 | 32 | 34 | 22 | 46 | 18 | 15 | 35 | 32 | 30 |
| BMT | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 3 | 3 | 8 | 15 | 6 | 16 | 11 | 10 | 4 | 4 | 4 | 9 | 9 | 17 | 9 | 9 | 24 | 17 | 5 | 1 | 3 | 6 | 7 | 5 |
| BOX | 19 | 16 | 4 | 6 | 13 | 16 | 3 | 9 | 17 | 22 | 12 | 5 | 7 | 10 | 12 | 12 | 16 | 8 | 4 | 3 | 3 | 4 | 5 | 7 |
| BRW | 72 | 42 | 51 | 61 | 122 | 96 | 52 | 30 | 13 | 20 | 62 | 319 | 237 | 208 | 147 | 43 | 36 | 20 | 26 | 23 | 23 | 39 | 46 | 59 |
| BSL | 10 | 4 | 6 | 13 | 2 | 7 | 6 | 11 | 3 | 4 | 5 | 4 | 11 | 13 | 10 | 11 | 11 | 3 | 2 | 4 | 6 | 5 | 4 | 3 |
| CBB | 32 | 53 | 66 | 59 | 25 | 29 | 38 | 18 | 10 | 12 | 19 | 46 | 45 | 58 | 41 | 37 | 77 | 54 | 39 | 44 | 36 | 70 | 33 | 49 |
| CLF | 10 | 9 | 8 | 6 | 6 | 13 | 4 | 3 | 3 | 10 | 16 | 11 | 9 | 5 | 3 | 5 | 13 | 3 | 4 | 3 | 2 | 6 | 5 | 6 |
| CMO | 24 | 24 | 18 | 47 | 15 | 17 | 30 | 38 | 7 | 7 | 13 | 37 | 31 | 60 | 17 | 13 | 13 | 10 | 20 | 14 | 14 | 18 | 20 | 23 |
| CNB | 7 | 13 | 13 | 7 | 13 | 7 | 11 | 3 | 2 | 2 | 2 | 14 | 6 | 21 | 3 | 6 | 14 | 3 | 2 | 2 | 4 | 11 | 10 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 18 | 15 | 2 | 16 | 3 | 11 | 7 | 2 | 2 | 1 | 8 | 3 | 11 | 2 | 4 | 9 | 2 | 1 | 1 | 2 | 12 | 13 | 8 |
| CZT | 14 | 13 | 9 | 6 | 6 | 17 | 7 | 4 | 8 | 9 | 4 | 4 | 3 | 11 | 6 | 4 | 11 | 5 | 2 | 2 | 1 | 1 | 3 | 3 |
| DLR | 4 | 1 | 4 | 4 | 3 | 7 | 4 | 6 | 3 | 3 | 3 | 4 | 11 | 7 | 8 | 13 | 20 | 13 | 3 | 2 | 6 | 8 | 6 | 3 |
| DOU | 12 | 10 | 9 | 6 | 7 | 14 | 3 | 3 | 4 | 11 | 14 | 13 | 10 | 8 | 2 | 6 | 15 | 3 | 3 | 3 | 2 | 6 | 6 | 6 |
| DRV | 104 | 90 | 59 | 32 | 48 | 54 | 13 | 9 | 17 | 12 | 10 | 47 | 23 | 58 | 19 | 17 | 52 | 17 | 7 | 8 | 9 | 20 | 28 | 58 |
| EBR | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 0 | 1 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
| ESK | 11 | 13 | 13 | 8 | 10 | 16 | 4 | 3 | 3 | 7 | 12 | 11 | 15 | 6 | 5 | 5 | 15 | 3 | 6 | 3 | 2 | 6 | 7 | 9 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 10 | 4 | 13 | 5 | 7 | 7 | 8 | 3 | 2 | 3 | 8 | 5 | 16 | 3 | 5 | 7 | 3 | 4 | 9 | 9 | 6 | 3 | 7 |
| FCC | 18 | 37 | 68 | 303 | 64 | 70 | 62 | 46 | 9 | 3 | 10 | 17 | 31 | 68 | 21 | 21 | 21 | 19 | 21 | 11 | 5 | 11 | 13 | 12 |
| FRD | 10 | 5 | 6 | 20 | 3 | 7 | 6 | 10 | 4 | 6 | 8 | 3 | 7 | 16 | 9 | 9 | 9 | 5 | 2 | 2 | 7 | 6 | 4 | 3 |
| FRN | 7 | 5 | 5 | 11 | 2 | 8 | 3 | 5 | 3 | 3 | 3 | 6 | 4 | 17 | 7 | 5 | 17 | 15 | 14 | 2 | 1 | 3 | 3 | 6 |
| FUR | 10 | 10 | 7 | 4 | 5 | 12 | 5 | 2 | 5 | 15 | 12 | 14 | 8 | 10 | 3 | 7 | 14 | 3 | 2 | 2 | 2 | 5 | 5 | 5 |
| GCK | ||||||||||||||||||||||||
| GDH | 92 | 40 | 16 | 64 | 61 | 50 | 34 | 29 | 28 | 23 | 32 | 34 | 59 | 120 | 40 | 41 | 36 | 34 | 44 | 38 | 8 | 29 | 21 | 25 |
| GNA | 13 | 8 | 9 | 11 | 22 | 9 | 2 | 3 | 9 | 6 | 3 | 8 | 9 | 17 | 3 | 6 | 17 | 3 | 3 | 3 | 2 | 2 | 2 | 6 |
| GUA | 9 | 9 | 6 | 2 | 11 | 15 | 6 | 1 | 3 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 1 | 4 | 9 | 3 | 15 | 12 |
| GUI | 3 | 4 | 2 | 5 | 3 | 5 | 4 | 3 | 4 | 3 | 13 | 19 | 15 | 3 | 4 | 3 | 12 | 8 | 6 | 2 | 2 | 3 | 3 | 3 |
| GZH | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| HAD | 9 | 9 | 9 | 7 | 8 | 13 | 2 | 2 | 3 | 7 | 14 | 9 | 15 | 5 | 4 | 4 | 12 | 3 | 4 | 2 | 1 | 5 | 5 | 6 |
| HBK | 3 | 6 | 5 | 4 | 7 | 5 | 11 | 13 | 5 | 3 | 5 | 8 | 7 | 5 | 6 | 5 | 5 | 2 | 2 | 1 | 1 | 1 | 1 | 2 |
| HER | 3 | 4 | 5 | 4 | 6 | 4 | 6 | 11 | 5 | 3 | 5 | 15 | 7 | 4 | 2 | 4 | 5 | 2 | 1 | 1 | 1 | 1 | 1 | 3 |
| HLP | 12 | 15 | 6 | 6 | 8 | 16 | 6 | 5 | 11 | 16 | 19 | 7 | 6 | 15 | 5 | 8 | 16 | 4 | 3 | 4 | 3 | 5 | 6 | 8 |
| HON | 7 | 4 | 2 | 6 | 3 | 2 | 3 | 2 | 1 | 2 | 1 | 3 | 3 | 3 | 1 | 5 | 11 | 5 | 11 | 14 | 15 | 14 | 9 | 12 |
| HRB | 10 | 10 | 5 | 4 | 4 | 14 | 5 | 5 | 10 | 12 | 16 | 13 | 5 | 13 | 4 | 7 | 14 | 4 | 2 | 2 | 2 | 4 | 5 | 5 |
| HRN | 76 | 59 | 66 | 34 | 149 | 108 | 63 | 18 | 30 | 20 | 33 | 35 | 63 | 32 | 49 | 41 | 86 | 27 | 20 | 21 | 27 | 16 | 29 | 36 |
| HUA | 1 | 2 | 1 | 4 | 5 | 4 | 5 | 2 | 2 | 5 | 6 | 6 | 6 | 13 | 4 | 4 | 6 | 3 | 5 | 9 | 2 | 1 | 3 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 134 | 56 | 33 | 101 | 45 | 75 | 34 | 17 | 21 | 12 | 25 | 37 | 57 | 121 | 36 | 54 | 61 | 22 | 31 | 28 | 13 | 25 | 27 | 29 |
| IRT | 5 | 14 | 7 | 18 | 13 | 22 | 4 | 5 | 1 | 13 | 10 | 9 | 6 | 9 | 4 | 4 | 7 | 5 | 4 | 1 | 2 | 5 | 7 | 6 |
| IZN | ||||||||||||||||||||||||
| KAK | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| KDU | 6 | 6 | 15 | 10 | 11 | 9 | 3 | 4 | 6 | 3 | 2 | 5 | 3 | 7 | 2 | 3 | 6 | 1 | 1 | 1 | 1 | 2 | 12 | 14 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| KOU | 1 | 3 | 1 | 3 | 2 | 4 | 2 | 2 | 6 | 9 | 4 | 6 | 5 | 11 | 16 | 16 | 2 | 5 | 5 | 6 | 9 | 3 | 1 | 1 |
| LER | 13 | 17 | 15 | 7 | 10 | 16 | 4 | 3 | 5 | 6 | 9 | 13 | 13 | 6 | 5 | 4 | 20 | 6 | 5 | 3 | 2 | 7 | 7 | 9 |
| LRM | 14 | 10 | 9 | 11 | 24 | 9 | 3 | 2 | 6 | 6 | 4 | 5 | 6 | 8 | 5 | 4 | 6 | 1 | 2 | 2 | 1 | 2 | 3 | 7 |
| LVV | 10 | 11 | 4 | 4 | 7 | 14 | 7 | 7 | 13 | 15 | 20 | 5 | 4 | 12 | 7 | 11 | 13 | 6 | 5 | 3 | 3 | 5 | 3 | 5 |
| LYC | ||||||||||||||||||||||||
| LZH | 2 | 13 | 13 | 20 | 18 | 10 | 3 | 6 | 7 | 9 | 10 | 7 | 3 | 6 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 2 | 8 | 9 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 3 | 2 | 4 | 2 | 5 | 2 | 2 | 9 | 6 | 14 | 11 | 9 | 13 | 11 | 2 | 13 | 6 | 2 | 2 | 2 | 3 | 2 | 1 |
| MCQ | 13 | 12 | 12 | 20 | 25 | 17 | 11 | 11 | 4 | 4 | 11 | 34 | 51 | 78 | 19 | 11 | 10 | 9 | 8 | 6 | 7 | 9 | 5 | 4 |
| MEA | 12 | 3 | 11 | 77 | 14 | 20 | 28 | 27 | 6 | 4 | 4 | 24 | 13 | 53 | 8 | 12 | 19 | 9 | 18 | 6 | 6 | 6 | 4 | 8 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 2 | 2 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 2 |
| NAQ | 58 | 36 | 104 | 81 | 80 | 67 | 44 | 12 | 10 | 11 | 10 | 26 | 16 | 29 | 10 | 17 | 13 | 13 | 14 | 8 | 7 | 9 | 9 | 14 |
| NCK | 8 | 9 | 5 | 3 | 3 | 13 | 4 | 4 | 8 | 11 | 13 | 12 | 5 | 12 | 3 | 7 | 12 | 4 | 2 | 2 | 2 | 4 | 5 | 5 |
| NEW | 3 | 3 | 7 | 34 | 7 | 13 | 9 | 13 | 5 | 4 | 3 | 13 | 7 | 32 | 5 | 8 | 18 | 9 | 16 | 4 | 4 | 4 | 4 | 4 |
| NGK | 12 | 12 | 7 | 4 | 5 | 14 | 5 | 4 | 8 | 13 | 11 | 15 | 6 | 13 | 3 | 6 | 16 | 5 | 2 | 3 | 2 | 6 | 6 | 7 |
| NUR | 18 | 21 | 5 | 7 | 14 | 19 | 7 | 6 | 11 | 17 | 16 | 5 | 7 | 12 | 6 | 7 | 20 | 8 | 3 | 4 | 2 | 5 | 6 | 9 |
| NVS | 8 | 10 | 10 | 10 | 20 | 11 | 8 | 7 | 9 | 4 | 8 | 12 | 9 | 6 | 4 | 8 | 5 | 4 | 5 | 4 | 4 | 4 | 6 | 6 |
| OTT | 14 | 10 | 9 | 38 | 5 | 12 | 8 | 15 | 6 | 7 | 9 | 6 | 9 | 19 | 11 | 10 | 10 | 7 | 2 | 6 | 8 | 7 | 5 | 3 |
| PAF | 23 | 17 | 6 | 5 | 18 | 15 | 3 | 5 | 4 | 2 | 5 | 6 | 5 | 12 | 6 | 6 | 20 | 5 | 2 | 1 | 1 | 3 | 5 | 6 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 10 | 18 | 15 | 20 | 7 | 4 | 3 | 10 | 10 | 11 | 6 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 2 | 15 | 10 |
| PPT | 9 | 2 | 7 | 8 | 2 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 3 | 2 | 1 | 1 | 3 | 5 | 7 | 8 | 2 | 2 | 8 | 14 |
| PST | ||||||||||||||||||||||||
| QSB | 6 | 4 | 4 | 8 | 4 | 10 | 4 | 17 | 18 | 16 | 7 | 5 | 4 | 5 | 6 | 8 | 5 | 4 | 3 | 1 | 2 | 2 | 3 | 2 |
| RES | 63 | 43 | 41 | 20 | 26 | 27 | 44 | 16 | 11 | 14 | 18 | 56 | 28 | 59 | 48 | 83 | 124 | 101 | 73 | 95 | 16 | 35 | 33 | 59 |
| SBA | 67 | 28 | 26 | 71 | 39 | 27 | 22 | 36 | 23 | 16 | 13 | 17 | 40 | 42 | 33 | 42 | 23 | 24 | 23 | 17 | 15 | 30 | 18 | 26 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 7 | 2 | 7 | 45 | 7 | 10 | 24 | 25 | 6 | 2 | 3 | 9 | 10 | 34 | 8 | 8 | 12 | 9 | 22 | 10 | 11 | 6 | 7 | 6 |
| SJG | 2 | 3 | 2 | 7 | 1 | 2 | 2 | 4 | 4 | 9 | 10 | 4 | 4 | 12 | 8 | 13 | 8 | 3 | 6 | 7 | 5 | 2 | 1 | 1 |
| SOD | 24 | 30 | 8 | 12 | 24 | 23 | 9 | 5 | 14 | 15 | 14 | 8 | 13 | 14 | 5 | 5 | 28 | 9 | 5 | 5 | 3 | 5 | 7 | 14 |
| SPT | 6 | 6 | 4 | 5 | 5 | 11 | 2 | 3 | 2 | 11 | 14 | 9 | 10 | 3 | 2 | 3 | 9 | 3 | 4 | 2 | 1 | 4 | 3 | 3 |
| STJ | 12 | 7 | 7 | 15 | 12 | 7 | 6 | 7 | 12 | 9 | 5 | 12 | 9 | 24 | 13 | 15 | 8 | 7 | 12 | 7 | 7 | 3 | 3 | 2 |
| SUA | 8 | 8 | 3 | 4 | 5 | 12 | 3 | 8 | 13 | 21 | 16 | 2 | 4 | 10 | 5 | 12 | 9 | 4 | 2 | 2 | 1 | 3 | 4 | 4 |
| TAM | 4 | 4 | 2 | 5 | 4 | 18 | 10 | 1 | 8 | 20 | 16 | 4 | 3 | 12 | 3 | 2 | 4 | 2 | 2 | 2 | 1 | 6 | 3 | 2 |
| TAN | 4 | 5 | 5 | 9 | 7 | 18 | 16 | 2 | 8 | 12 | 9 | 7 | 3 | 6 | 6 | 2 | 4 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| TDC | ||||||||||||||||||||||||
| THL | 79 | 42 | 19 | 37 | 45 | 34 | 54 | 21 | 21 | 15 | 13 | 37 | 41 | 95 | 75 | 80 | 98 | 34 | 52 | 20 | 16 | 31 | 19 | 41 |
| THY | 9 | 9 | 5 | 4 | 4 | 14 | 5 | 5 | 9 | 13 | 15 | 13 | 6 | 13 | 4 | 8 | 13 | 4 | 2 | 2 | 2 | 4 | 4 | 5 |
| TRW | 3 | 3 | 5 | 6 | 8 | 9 | 8 | 2 | 2 | 3 | 2 | 2 | 5 | 13 | 5 | 13 | 5 | 6 | 3 | 6 | 2 | 1 | 2 | 1 |
| TSU | 3 | 3 | 3 | 4 | 2 | 10 | 7 | 14 | 8 | 2 | 6 | 12 | 7 | 4 | 4 | 5 | 5 | 2 | 1 | 1 | 1 | 1 | 1 | 2 |
| TUC | 5 | 2 | 4 | 7 | 3 | 8 | 5 | 5 | 3 | 3 | 4 | 6 | 8 | 16 | 10 | 11 | 23 | 17 | 8 | 2 | 2 | 5 | 6 | 4 |
| UPS | 16 | 20 | 6 | 7 | 10 | 19 | 6 | 6 | 9 | 13 | 15 | 7 | 7 | 14 | 2 | 4 | 19 | 6 | 3 | 3 | 2 | 5 | 6 | 9 |
| VAL | 9 | 8 | 8 | 7 | 11 | 10 | 4 | 3 | 2 | 6 | 9 | 9 | 17 | 3 | 5 | 2 | 13 | 3 | 7 | 2 | 2 | 5 | 5 | 6 |
| VIC | 2 | 4 | 8 | 31 | 6 | 10 | 6 | 11 | 4 | 3 | 3 | 11 | 5 | 30 | 4 | 6 | 13 | 8 | 21 | 5 | 5 | 5 | 1 | 4 |
| VSS | 2 | 4 | 1 | 3 | 8 | 8 | 4 | 2 | 6 | 9 | 9 | 11 | 5 | 5 | 4 | 3 | 5 | 3 | 5 | 3 | 2 | 1 | 2 | 1 |
| WNG | 13 | 14 | 10 | 6 | 5 | 16 | 4 | 3 | 6 | 11 | 9 | 16 | 8 | 11 | 2 | 6 | 16 | 4 | 2 | 3 | 2 | 6 | 6 | 8 |
| YKC | 66 | 50 | 30 | 90 | 41 | 67 | 155 | 154 | 39 | 15 | 11 | 63 | 111 | 179 | 43 | 17 | 27 | 20 | 25 | 15 | 15 | 20 | 18 | 25 |
- Date modified: