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 | 6 | 4 | 12 | 5 | 14 | 7 | 5 | 10 | 7 | 7 | 2 | 4 | 8 | 14 | 6 | 9 | 3 | 3 | 2 | 3 | 3 | 5 | 4 | 7 |
| ABG | 7 | 9 | 4 | 9 | 17 | 15 | 12 | 4 | 9 | 8 | 8 | 6 | 3 | 1 | 5 | 1 | 2 | 1 | 1 | 3 | 1 | 4 | 3 | 7 |
| ABK | 42 | 21 | 33 | 38 | 38 | 17 | 32 | 20 | 32 | 12 | 13 | 13 | 13 | 14 | 9 | 8 | 6 | 19 | 40 | 17 | 130 | 156 | 32 | 104 |
| AIA | 14 | 3 | 14 | 22 | 26 | 23 | 36 | 12 | 19 | 9 | 4 | 5 | 3 | 7 | 4 | 8 | 5 | 5 | 4 | 2 | 6 | 43 | 10 | 11 |
| AMS | 9 | 7 | 10 | 9 | 12 | 5 | 15 | 6 | 13 | 4 | 5 | 9 | 4 | 8 | 6 | 1 | 1 | 13 | 11 | 4 | 12 | 11 | 5 | 12 |
| API | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 2 | 1 |
| AQU | 3 | 4 | 7 | 8 | 6 | 6 | 10 | 7 | 14 | 8 | 16 | 12 | 5 | 12 | 11 | 9 | 4 | 6 | 4 | 5 | 14 | 10 | 4 | 6 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 5 | 2 | 2 | 5 | 5 | 9 | 20 | 18 | 9 | 4 | 6 | 13 | 14 | 15 | 1 | 3 | 3 | 4 | 2 | 4 | 2 | 3 |
| ASP | 4 | 10 | 11 | 12 | 6 | 4 | 16 | 4 | 4 | 3 | 3 | 2 | 3 | 6 | 4 | 2 | 2 | 4 | 7 | 4 | 6 | 8 | 14 | 11 |
| BDV | 6 | 5 | 8 | 10 | 5 | 6 | 12 | 5 | 14 | 6 | 16 | 16 | 7 | 12 | 9 | 8 | 4 | 10 | 7 | 5 | 19 | 15 | 5 | 8 |
| BEL | 8 | 6 | 10 | 13 | 11 | 7 | 13 | 7 | 15 | 5 | 15 | 13 | 9 | 11 | 8 | 8 | 3 | 12 | 10 | 5 | 20 | 18 | 6 | 8 |
| BFE | 13 | 8 | 12 | 15 | 10 | 8 | 16 | 7 | 19 | 7 | 15 | 16 | 9 | 9 | 9 | 8 | 3 | 13 | 12 | 8 | 27 | 29 | 7 | 14 |
| BFO | ||||||||||||||||||||||||
| BLC | 40 | 41 | 58 | 67 | 58 | 45 | 66 | 65 | 63 | 44 | 31 | 29 | 28 | 55 | 43 | 47 | 48 | 48 | 67 | 65 | 65 | 66 | 107 | 78 |
| BMT | 1 | 2 | 3 | 3 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 2 | 2 | 2 |
| BNG | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 |
| BOU | 9 | 6 | 14 | 18 | 24 | 10 | 20 | 24 | 7 | 10 | 4 | 7 | 7 | 10 | 10 | 13 | 19 | 12 | 3 | 4 | 3 | 13 | 6 | 6 |
| BOX | 7 | 12 | 16 | 13 | 21 | 7 | 19 | 8 | 21 | 6 | 7 | 6 | 17 | 13 | 3 | 5 | 2 | 18 | 19 | 4 | 20 | 21 | 10 | 8 |
| BRW | 44 | 48 | 80 | 75 | 76 | 59 | 192 | 195 | 73 | 91 | 88 | 36 | 33 | 185 | 76 | 28 | 23 | 33 | 30 | 47 | 22 | 92 | 83 | 65 |
| BSL | 6 | 5 | 11 | 13 | 11 | 4 | 4 | 8 | 7 | 9 | 5 | 12 | 9 | 14 | 9 | 13 | 3 | 4 | 2 | 3 | 3 | 9 | 2 | 7 |
| CBB | 73 | 42 | 71 | 61 | 57 | 32 | 91 | 97 | 39 | 39 | 23 | 39 | 26 | 41 | 52 | 41 | 56 | 66 | 127 | 97 | 65 | 116 | 124 | 61 |
| CLF | 6 | 6 | 9 | 9 | 11 | 8 | 11 | 5 | 12 | 8 | 16 | 20 | 8 | 7 | 12 | 10 | 8 | 12 | 5 | 7 | 22 | 17 | 6 | 8 |
| CMO | 11 | 18 | 36 | 33 | 10 | 16 | 122 | 150 | 26 | 33 | 26 | 20 | 25 | 35 | 62 | 8 | 9 | 26 | 14 | 15 | 12 | 39 | 37 | 27 |
| CNB | 4 | 10 | 13 | 9 | 5 | 6 | 28 | 21 | 5 | 6 | 4 | 2 | 6 | 14 | 10 | 2 | 3 | 6 | 9 | 6 | 6 | 7 | 12 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 8 | 13 | 8 | 9 | 4 | 5 | 19 | 10 | 2 | 3 | 3 | 2 | 2 | 5 | 4 | 1 | 2 | 3 | 7 | 4 | 6 | 8 | 15 | 5 |
| CZT | 12 | 2 | 8 | 13 | 18 | 21 | 10 | 5 | 15 | 4 | 4 | 6 | 4 | 3 | 7 | 2 | 1 | 6 | 9 | 4 | 18 | 25 | 6 | 14 |
| DLR | 6 | 6 | 9 | 11 | 9 | 5 | 7 | 10 | 5 | 6 | 3 | 5 | 7 | 4 | 5 | 14 | 11 | 11 | 4 | 2 | 3 | 12 | 2 | 4 |
| DOU | 8 | 5 | 9 | 10 | 11 | 7 | 12 | 5 | 13 | 7 | 18 | 21 | 9 | 9 | 13 | 9 | 6 | 11 | 6 | 6 | 24 | 21 | 6 | 9 |
| DRV | 43 | 49 | 88 | 55 | 27 | 24 | 38 | 75 | 39 | 23 | 16 | 25 | 19 | 41 | 49 | 10 | 19 | 23 | 15 | 27 | 35 | 25 | 66 | 47 |
| EBR | 0 | 0 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 3 | 3 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 1 |
| ESK | 10 | 8 | 13 | 14 | 20 | 6 | 12 | 5 | 16 | 7 | 14 | 16 | 13 | 6 | 11 | 8 | 6 | 15 | 5 | 9 | 33 | 25 | 9 | 11 |
| EUA | ||||||||||||||||||||||||
| EYR | 16 | 9 | 9 | 6 | 10 | 7 | 32 | 32 | 4 | 6 | 7 | 3 | 6 | 16 | 7 | 2 | 3 | 4 | 5 | 5 | 9 | 5 | 8 | 12 |
| FCC | 24 | 14 | 21 | 79 | 136 | 98 | 73 | 67 | 50 | 19 | 23 | 22 | 14 | 15 | 27 | 21 | 27 | 21 | 23 | 18 | 23 | 53 | 27 | 32 |
| FRD | 5 | 4 | 12 | 10 | 8 | 3 | 3 | 5 | 10 | 9 | 8 | 13 | 9 | 19 | 9 | 9 | 4 | 2 | 2 | 3 | 3 | 11 | 3 | 5 |
| FRN | 8 | 5 | 7 | 8 | 11 | 7 | 16 | 19 | 4 | 5 | 3 | 4 | 3 | 8 | 15 | 6 | 15 | 18 | 11 | 4 | 6 | 9 | 6 | 6 |
| FUR | 5 | 5 | 7 | 9 | 8 | 6 | 11 | 4 | 14 | 8 | 18 | 17 | 7 | 11 | 11 | 8 | 5 | 10 | 6 | 5 | 20 | 16 | 5 | 8 |
| GCK | ||||||||||||||||||||||||
| GDH | 45 | 24 | 35 | 30 | 33 | 20 | 71 | 34 | 86 | 127 | 103 | 102 | 76 | 51 | 71 | 23 | 35 | 58 | 34 | 37 | 35 | 46 | 50 | 38 |
| GNA | 13 | 8 | 13 | 17 | 16 | 8 | 24 | 13 | 7 | 6 | 4 | 3 | 10 | 21 | 3 | 2 | 2 | 8 | 13 | 7 | 15 | 18 | 13 | 12 |
| GUA | 10 | 7 | 3 | 8 | 9 | 7 | 9 | 7 | 4 | 2 | 1 | 1 | 1 | 3 | 1 | 1 | 2 | 1 | 2 | 3 | 7 | 4 | 11 | 12 |
| GUI | 2 | 3 | 7 | 5 | 7 | 2 | 3 | 3 | 13 | 13 | 14 | 8 | 8 | 4 | 7 | 10 | 5 | 13 | 5 | 5 | 8 | 4 | 4 | 2 |
| GZH | 1 | 1 | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 2 |
| HAD | 5 | 6 | 8 | 9 | 16 | 7 | 11 | 4 | 12 | 6 | 15 | 17 | 11 | 5 | 8 | 11 | 5 | 11 | 4 | 6 | 26 | 20 | 9 | 8 |
| HBK | 6 | 2 | 7 | 5 | 6 | 15 | 11 | 15 | 10 | 12 | 10 | 10 | 12 | 6 | 12 | 7 | 3 | 4 | 4 | 4 | 6 | 8 | 3 | 4 |
| HER | 6 | 2 | 7 | 5 | 9 | 4 | 5 | 18 | 7 | 3 | 11 | 17 | 9 | 6 | 8 | 7 | 4 | 3 | 4 | 4 | 8 | 9 | 2 | 4 |
| HLP | 11 | 9 | 13 | 14 | 12 | 7 | 13 | 6 | 13 | 10 | 16 | 14 | 11 | 12 | 8 | 7 | 4 | 16 | 10 | 7 | 21 | 21 | 7 | 10 |
| HON | 10 | 5 | 3 | 3 | 4 | 2 | 4 | 3 | 1 | 2 | 2 | 3 | 3 | 1 | 2 | 1 | 12 | 10 | 7 | 4 | 21 | 20 | 6 | 6 |
| HRB | 6 | 6 | 8 | 12 | 6 | 4 | 11 | 6 | 15 | 6 | 14 | 12 | 6 | 12 | 11 | 7 | 3 | 9 | 7 | 5 | 17 | 14 | 6 | 8 |
| HRN | 62 | 44 | 119 | 54 | 225 | 122 | 116 | 62 | 102 | 54 | 43 | 50 | 64 | 67 | 31 | 25 | 42 | 34 | 96 | 69 | 33 | 113 | 39 | 57 |
| HUA | 6 | 3 | 3 | 3 | 5 | 5 | 8 | 3 | 5 | 2 | 6 | 5 | 9 | 12 | 7 | 3 | 11 | 2 | 10 | 4 | 3 | 5 | 4 | 8 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 80 | 49 | 54 | 64 | 205 | 56 | 90 | 47 | 66 | 76 | 89 | 61 | 58 | 43 | 67 | 37 | 37 | 52 | 35 | 95 | 114 | 124 | 63 | 57 |
| IRT | 6 | 4 | 18 | 22 | 24 | 3 | 5 | 7 | 9 | 6 | 11 | 2 | 15 | 8 | 5 | 3 | 3 | 6 | 8 | 4 | 8 | 22 | 12 | 11 |
| IZN | ||||||||||||||||||||||||
| KAK | 2 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
| KDU | 5 | 10 | 6 | 9 | 9 | 5 | 12 | 3 | 3 | 3 | 2 | 1 | 3 | 3 | 2 | 1 | 2 | 2 | 5 | 3 | 4 | 8 | 15 | 13 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
| KOU | 5 | 2 | 6 | 2 | 5 | 3 | 5 | 5 | 3 | 9 | 6 | 8 | 9 | 8 | 10 | 3 | 8 | 4 | 8 | 4 | 7 | 3 | 2 | 4 |
| LER | 17 | 8 | 11 | 17 | 19 | 6 | 15 | 5 | 20 | 7 | 12 | 14 | 13 | 5 | 9 | 6 | 4 | 12 | 7 | 9 | 41 | 34 | 10 | 15 |
| LRM | 17 | 8 | 12 | 18 | 8 | 7 | 14 | 8 | 5 | 6 | 4 | 2 | 11 | 18 | 3 | 2 | 2 | 4 | 7 | 5 | 8 | 15 | 9 | 8 |
| LVV | 6 | 6 | 9 | 13 | 10 | 8 | 14 | 7 | 15 | 7 | 13 | 10 | 12 | 11 | 6 | 7 | 5 | 11 | 9 | 5 | 16 | 15 | 6 | 9 |
| LYC | ||||||||||||||||||||||||
| LZH | 5 | 8 | 15 | 21 | 17 | 6 | 4 | 10 | 10 | 8 | 5 | 3 | 2 | 5 | 6 | 1 | 2 | 2 | 2 | 6 | 5 | 8 | 13 | 20 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 2 | 8 | 4 | 4 | 3 | 4 | 9 | 17 | 14 | 16 | 5 | 4 | 6 | 10 | 15 | 8 | 11 | 2 | 7 | 7 | 3 | 3 | 3 |
| MCQ | 10 | 6 | 13 | 20 | 10 | 12 | 94 | 110 | 6 | 25 | 16 | 10 | 48 | 59 | 35 | 8 | 4 | 4 | 10 | 11 | 9 | 11 | 22 | 13 |
| MEA | 9 | 12 | 23 | 23 | 38 | 25 | 85 | 67 | 19 | 22 | 7 | 6 | 10 | 24 | 23 | 8 | 19 | 21 | 9 | 8 | 8 | 18 | 17 | 12 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| NAQ | 57 | 33 | 46 | 84 | 159 | 49 | 61 | 25 | 32 | 34 | 23 | 20 | 32 | 27 | 13 | 8 | 8 | 17 | 13 | 13 | 47 | 56 | 19 | 39 |
| NCK | 5 | 5 | 7 | 10 | 4 | 4 | 11 | 6 | 14 | 6 | 13 | 12 | 7 | 10 | 10 | 7 | 3 | 9 | 6 | 5 | 15 | 14 | 6 | 7 |
| NEW | 9 | 10 | 12 | 12 | 21 | 14 | 41 | 42 | 7 | 11 | 4 | 5 | 6 | 16 | 16 | 4 | 16 | 24 | 10 | 5 | 8 | 10 | 6 | 8 |
| NGK | 9 | 6 | 9 | 12 | 7 | 5 | 14 | 5 | 16 | 5 | 15 | 18 | 8 | 12 | 11 | 8 | 4 | 12 | 9 | 7 | 23 | 21 | 6 | 11 |
| NUR | 12 | 11 | 14 | 13 | 20 | 10 | 16 | 7 | 20 | 7 | 14 | 9 | 13 | 12 | 6 | 7 | 2 | 16 | 16 | 6 | 30 | 29 | 9 | 10 |
| NVS | 5 | 7 | 12 | 21 | 27 | 6 | 12 | 5 | 7 | 8 | 10 | 7 | 11 | 12 | 8 | 2 | 4 | 8 | 9 | 8 | 7 | 19 | 11 | 16 |
| OTT | 6 | 4 | 17 | 12 | 18 | 8 | 7 | 7 | 15 | 13 | 10 | 15 | 12 | 22 | 12 | 10 | 4 | 3 | 3 | 5 | 6 | 17 | 6 | 8 |
| PAF | 20 | 8 | 9 | 15 | 19 | 12 | 19 | 9 | 19 | 4 | 9 | 6 | 4 | 4 | 9 | 2 | 2 | 21 | 26 | 5 | 36 | 27 | 10 | 24 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 9 | 9 | 16 | 18 | 12 | 2 | 6 | 12 | 9 | 5 | 2 | 4 | 3 | 4 | 3 | 1 | 2 | 2 | 2 | 5 | 4 | 5 | 15 | 21 |
| PPT | 6 | 4 | 11 | 5 | 4 | 2 | 3 | 3 | 2 | 2 | 3 | 3 | 2 | 5 | 2 | 2 | 3 | 10 | 10 | 3 | 12 | 6 | 5 | 4 |
| PST | ||||||||||||||||||||||||
| QSB | 4 | 4 | 17 | 10 | 13 | 7 | 12 | 14 | 13 | 5 | 6 | 4 | 11 | 16 | 2 | 1 | 2 | 6 | 4 | 3 | 7 | 9 | 5 | 6 |
| RES | 27 | 34 | 65 | 39 | 45 | 37 | 78 | 47 | 21 | 39 | 13 | 20 | 17 | 30 | 48 | 41 | 96 | 158 | 85 | 94 | 46 | 61 | 83 | 73 |
| SBA | 23 | 32 | 31 | 36 | 27 | 31 | 29 | 37 | 67 | 22 | 28 | 34 | 37 | 46 | 45 | 23 | 22 | 52 | 31 | 40 | 35 | 64 | 110 | 49 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 7 | 13 | 12 | 6 | 14 | 12 | 82 | 85 | 9 | 11 | 10 | 6 | 10 | 28 | 26 | 4 | 8 | 22 | 9 | 13 | 13 | 24 | 16 | 8 |
| SJG | 4 | 3 | 6 | 2 | 5 | 3 | 4 | 3 | 4 | 3 | 11 | 4 | 13 | 11 | 6 | 8 | 7 | 2 | 3 | 2 | 4 | 7 | 4 | 4 |
| SOD | 48 | 18 | 23 | 18 | 30 | 9 | 27 | 14 | 23 | 10 | 11 | 11 | 15 | 13 | 7 | 5 | 6 | 19 | 36 | 10 | 68 | 90 | 19 | 39 |
| SPT | 2 | 3 | 6 | 6 | 7 | 8 | 5 | 3 | 8 | 13 | 16 | 15 | 6 | 4 | 7 | 12 | 6 | 8 | 2 | 6 | 15 | 10 | 5 | 4 |
| STJ | 10 | 3 | 12 | 12 | 30 | 8 | 11 | 12 | 12 | 5 | 10 | 10 | 18 | 19 | 11 | 12 | 9 | 7 | 7 | 5 | 8 | 28 | 5 | 8 |
| SUA | 4 | 5 | 10 | 13 | 7 | 3 | 16 | 9 | 13 | 7 | 12 | 9 | 11 | 14 | 7 | 7 | 3 | 9 | 6 | 3 | 12 | 11 | 5 | 8 |
| TAM | 2 | 3 | 8 | 5 | 3 | 7 | 9 | 8 | 6 | 8 | 13 | 11 | 7 | 11 | 11 | 12 | 3 | 6 | 6 | 5 | 10 | 6 | 4 | 4 |
| TAN | 6 | 1 | 7 | 5 | 14 | 17 | 2 | 7 | 13 | 6 | 5 | 5 | 2 | 2 | 9 | 1 | 1 | 4 | 3 | 2 | 4 | 5 | 2 | 6 |
| TDC | ||||||||||||||||||||||||
| THL | 31 | 20 | 69 | 17 | 23 | 35 | 72 | 21 | 33 | 23 | 32 | 69 | 79 | 72 | 120 | 125 | 103 | 82 | 30 | 54 | 58 | 33 | 51 | 72 |
| THY | 5 | 6 | 8 | 12 | 5 | 4 | 11 | 7 | 15 | 7 | 14 | 12 | 7 | 12 | 11 | 8 | 3 | 9 | 7 | 5 | 16 | 14 | 6 | 8 |
| TRW | 7 | 1 | 4 | 7 | 10 | 8 | 15 | 6 | 7 | 5 | 3 | 6 | 7 | 4 | 5 | 12 | 8 | 6 | 4 | 6 | 3 | 17 | 5 | 6 |
| TSU | 5 | 2 | 7 | 5 | 5 | 5 | 11 | 19 | 6 | 10 | 8 | 9 | 15 | 10 | 8 | 8 | 8 | 3 | 4 | 4 | 4 | 6 | 3 | 3 |
| TUC | 6 | 4 | 9 | 11 | 11 | 6 | 12 | 15 | 5 | 6 | 3 | 5 | 6 | 5 | 10 | 17 | 15 | 8 | 6 | 7 | 2 | 15 | 5 | 5 |
| UPS | 15 | 9 | 13 | 14 | 18 | 11 | 16 | 6 | 20 | 7 | 12 | 14 | 10 | 8 | 9 | 6 | 4 | 15 | 13 | 6 | 29 | 30 | 8 | 10 |
| VAL | 4 | 6 | 7 | 9 | 19 | 5 | 9 | 4 | 12 | 6 | 11 | 14 | 13 | 10 | 6 | 9 | 4 | 10 | 4 | 7 | 28 | 20 | 10 | 9 |
| VIC | 8 | 11 | 9 | 8 | 14 | 11 | 40 | 42 | 6 | 10 | 4 | 4 | 5 | 16 | 17 | 4 | 11 | 21 | 12 | 12 | 7 | 11 | 6 | 6 |
| VSS | 4 | 2 | 3 | 4 | 4 | 5 | 8 | 4 | 5 | 5 | 18 | 14 | 6 | 6 | 3 | 8 | 5 | 7 | 9 | 3 | 2 | 9 | 3 | 5 |
| WNG | 11 | 7 | 11 | 13 | 9 | 6 | 13 | 5 | 16 | 5 | 16 | 17 | 8 | 8 | 12 | 9 | 4 | 13 | 9 | 7 | 24 | 26 | 6 | 12 |
| YKC | 17 | 10 | 41 | 60 | 51 | 53 | 95 | 96 | 72 | 69 | 32 | 26 | 24 | 80 | 71 | 12 | 32 | 28 | 18 | 33 | 16 | 60 | 46 | 27 |
- Date modified: