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 | 4 | 7 | 16 | 6 | 6 | 4 | 11 | 12 | 10 | 2 | 8 | 7 | 5 | 6 | 10 | 2 | 2 | 9 | 3 | 3 | 2 | 5 | 3 |
| ABG | 13 | 8 | 2 | 6 | 14 | 21 | 13 | 6 | 7 | 2 | 12 | 12 | 7 | 5 | 2 | 2 | 1 | 2 | 5 | 2 | 2 | 3 | 4 | 3 |
| ABK | 23 | 29 | 25 | 23 | 29 | 64 | 39 | 33 | 29 | 17 | 26 | 19 | 15 | 17 | 10 | 12 | 9 | 6 | 15 | 69 | 35 | 43 | 140 | 51 |
| AIA | 6 | 37 | 37 | 6 | 13 | 14 | 26 | 14 | 12 | 7 | 12 | 6 | 4 | 10 | 8 | 9 | 5 | 4 | 8 | 3 | 6 | 11 | 51 | 33 |
| AMS | 6 | 7 | 14 | 7 | 7 | 5 | 11 | 12 | 5 | 3 | 5 | 9 | 6 | 2 | 3 | 2 | 1 | 1 | 12 | 8 | 5 | 15 | 28 | 17 |
| API | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 2 | 1 | 0 | 1 | 1 |
| AQU | 2 | 5 | 9 | 6 | 7 | 12 | 6 | 6 | 10 | 14 | 16 | 6 | 5 | 6 | 3 | 6 | 8 | 6 | 12 | 7 | 8 | 3 | 12 | 10 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 2 | 2 | 3 | 4 | 4 | 8 | 15 | 13 | 3 | 8 | 2 | 8 | 8 | 8 | 4 | 3 | 2 | 1 | 3 | 1 | 5 | 2 |
| ASP | 3 | 12 | 8 | 8 | 4 | 4 | 7 | 6 | 5 | 2 | 5 | 2 | 8 | 2 | 2 | 2 | 1 | 1 | 5 | 7 | 5 | 6 | 12 | 14 |
| BDV | 3 | 7 | 13 | 9 | 9 | 15 | 10 | 11 | 13 | 9 | 14 | 10 | 4 | 4 | 5 | 4 | 11 | 6 | 15 | 12 | 11 | 6 | 18 | 15 |
| BEL | 4 | 10 | 15 | 11 | 13 | 15 | 9 | 11 | 14 | 15 | 14 | 6 | 3 | 5 | 4 | 4 | 10 | 6 | 16 | 15 | 13 | 10 | 21 | 19 |
| BFE | 6 | 12 | 20 | 12 | 14 | 21 | 13 | 14 | 14 | 12 | 14 | 14 | 4 | 5 | 4 | 4 | 11 | 8 | 16 | 22 | 16 | 13 | 29 | 25 |
| BFO | ||||||||||||||||||||||||
| BLC | 28 | 35 | 33 | 17 | 55 | 31 | 72 | 106 | 49 | 17 | 58 | 21 | 29 | 29 | 37 | 107 | 22 | 55 | 116 | 72 | 104 | 78 | 52 | 84 |
| BMT | 1 | 3 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | |||||||||||||||
| BOU | 5 | 4 | 9 | 4 | 24 | 14 | 22 | 23 | 8 | 7 | 11 | 12 | 8 | 14 | 11 | 20 | 16 | 14 | 25 | 3 | 5 | 6 | 15 | 6 |
| BOX | 5 | 11 | 17 | 12 | 16 | 17 | 16 | 19 | 16 | 18 | 11 | 14 | 13 | 5 | 6 | 5 | 6 | 5 | 24 | 18 | 17 | 19 | 24 | 30 |
| BRW | 33 | 48 | 49 | 35 | 71 | 63 | 61 | 95 | 161 | 81 | 161 | 156 | 208 | 37 | 19 | 52 | 28 | 27 | 53 | 51 | 74 | 94 | 34 | 93 |
| BSL | 2 | 7 | 5 | 2 | 10 | 3 | 19 | 19 | 8 | 6 | 7 | 6 | 8 | 13 | 5 | 23 | 22 | 15 | 4 | 13 | 13 | 5 | 11 | 6 |
| CBB | 41 | 58 | 42 | 28 | 38 | 40 | 38 | 47 | 37 | 59 | 91 | 35 | 59 | 37 | 52 | 48 | 30 | 97 | 147 | 123 | 146 | 100 | 111 | 54 |
| CLF | 3 | 7 | 13 | 8 | 8 | 16 | 12 | 10 | 9 | 10 | 17 | 11 | 10 | 5 | 3 | 9 | 10 | 9 | 16 | 11 | 10 | 6 | 17 | 11 |
| CMO | 12 | 17 | 15 | 11 | 26 | 32 | 61 | 49 | 37 | 67 | 53 | 56 | 100 | 40 | 10 | 26 | 13 | 15 | 37 | 15 | 41 | 34 | 17 | 29 |
| CNB | 3 | 11 | 9 | 7 | 5 | 6 | 11 | 4 | 6 | 3 | 8 | 7 | 10 | 6 | 3 | 5 | 1 | 2 | 7 | 8 | 5 | 9 | 13 | 8 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 12 | 8 | 7 | 3 | 5 | 9 | 5 | 6 | 2 | 5 | 2 | 7 | 4 | 1 | 3 | 1 | 1 | 5 | 7 | 8 | 9 | 18 | 8 |
| CZT | 7 | 18 | 17 | 4 | 6 | 13 | 14 | 12 | 7 | 5 | 5 | 7 | 7 | 5 | 3 | 4 | 2 | 2 | 4 | 17 | 3 | 14 | 35 | 28 |
| DLR | 1 | 3 | 5 | 2 | 11 | 5 | 12 | 14 | 5 | 5 | 5 | 8 | 3 | 12 | 6 | 11 | 15 | 18 | 20 | 2 | 9 | 6 | 11 | 6 |
| DOU | 3 | 7 | 14 | 8 | 9 | 16 | 12 | 11 | 9 | 9 | 15 | 11 | 10 | 5 | 4 | 8 | 10 | 10 | 16 | 13 | 12 | 6 | 19 | 13 |
| DRV | 55 | 78 | 80 | 29 | 52 | 68 | 49 | 33 | 44 | 23 | 36 | 54 | 40 | 17 | 19 | 34 | 17 | 7 | 32 | 29 | 26 | 57 | 67 | 45 |
| EBR | 0 | 0 | 1 | 1 | 1 | 3 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 0 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 1 | 1 |
| ESK | 5 | 10 | 19 | 9 | 9 | 17 | 15 | 13 | 11 | 13 | 15 | 14 | 12 | 9 | 7 | 13 | 7 | 8 | 20 | 15 | 11 | 8 | 22 | 15 |
| EUA | ||||||||||||||||||||||||
| EYR | 12 | 5 | 4 | 5 | 9 | 5 | 25 | 3 | 9 | 5 | 8 | 9 | 10 | 4 | 3 | 5 | 4 | 3 | 4 | 4 | 6 | 10 | 9 | 12 |
| FCC | 16 | 48 | 27 | 14 | 135 | 145 | 51 | 123 | 61 | 70 | 27 | 44 | 17 | 28 | 21 | 51 | 16 | 21 | 70 | 26 | 55 | 41 | 35 | 28 |
| FRD | 1 | 11 | 7 | 3 | 7 | 9 | 23 | 22 | 7 | 9 | 6 | 8 | 7 | 9 | 9 | 23 | 11 | 4 | 6 | 10 | 11 | 7 | 11 | 8 |
| FRN | 4 | 3 | 5 | 3 | 15 | 11 | 11 | 6 | 7 | 3 | 5 | 7 | 11 | 12 | 11 | 12 | 5 | 12 | 30 | 4 | 2 | 6 | 2 | 9 |
| FUR | 3 | 7 | 13 | 9 | 9 | 15 | 9 | 10 | 12 | 9 | 16 | 11 | 5 | 4 | 4 | 5 | 10 | 8 | 15 | 12 | 11 | 6 | 16 | 13 |
| GCK | ||||||||||||||||||||||||
| GDH | 31 | 24 | 45 | 39 | 59 | 50 | 76 | 35 | 80 | 86 | 178 | 140 | 55 | 85 | 33 | 78 | 15 | 49 | 59 | 65 | 59 | 65 | 273 | 53 |
| GNA | 15 | 7 | 6 | 20 | 9 | 9 | 13 | 5 | 11 | 5 | 7 | 2 | 14 | 4 | 3 | 4 | 2 | 3 | 10 | 17 | 9 | 9 | 14 | 13 |
| GUA | 11 | 4 | 3 | 5 | 7 | 4 | 9 | 2 | 5 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 6 | 11 | 16 | 7 | 14 |
| GUI | 2 | 4 | 4 | 4 | 4 | 8 | 10 | 3 | 8 | 11 | 19 | 12 | 11 | 4 | 2 | 10 | 12 | 9 | 10 | 3 | 4 | 6 | 6 | 2 |
| GZH | 0 | 2 | 2 | 2 | 1 | 0 | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 |
| HAD | 2 | 7 | 13 | 7 | 8 | 16 | 11 | 9 | 9 | 12 | 12 | 12 | 12 | 9 | 4 | 9 | 9 | 8 | 15 | 12 | 8 | 10 | 14 | 9 |
| HBK | 3 | 7 | 6 | 4 | 5 | 10 | 8 | 6 | 8 | 8 | 4 | 7 | 8 | 2 | 11 | 10 | 4 | 2 | 5 | 7 | 2 | 3 | 9 | 10 |
| HER | 3 | 7 | 7 | 3 | 6 | 6 | 6 | 5 | 6 | 7 | 11 | 9 | 2 | 2 | 4 | 9 | 5 | 2 | 5 | 7 | 3 | 5 | 9 | 11 |
| HLP | 6 | 12 | 18 | 14 | 15 | 17 | 12 | 14 | 14 | 12 | 20 | 6 | 3 | 8 | 4 | 8 | 8 | 5 | 21 | 16 | 14 | 12 | 27 | 19 |
| HON | 2 | 3 | 5 | 2 | 4 | 2 | 6 | 4 | 2 | 2 | 3 | 2 | 1 | 3 | 3 | 5 | 12 | 7 | 13 | 9 | 9 | 10 | 14 | 6 |
| HRB | 3 | 8 | 13 | 10 | 10 | 15 | 9 | 11 | 16 | 12 | 14 | 7 | 2 | 5 | 5 | 4 | 10 | 5 | 15 | 11 | 11 | 6 | 17 | 15 |
| HRN | 62 | 54 | 56 | 94 | 103 | 166 | 144 | 106 | 120 | 76 | 103 | 102 | 42 | 29 | 46 | 71 | 22 | 17 | 74 | 46 | 46 | 67 | 127 | 67 |
| HUA | 2 | 3 | 6 | 2 | 2 | 2 | 2 | 4 | 4 | 4 | 4 | 6 | 7 | 12 | 4 | 6 | 13 | 6 | 12 | 10 | 3 | 8 | 8 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 36 | 102 | 179 | 45 | 62 | 38 | 56 | 54 | 96 | 121 | 132 | 62 | 66 | 76 | 51 | 84 | 29 | 112 | 186 | 46 | 73 | 58 | 245 | 77 |
| IRT | 11 | 14 | 17 | 19 | 23 | 13 | 6 | 5 | 18 | 9 | 8 | 3 | 10 | 11 | 3 | 4 | 3 | 2 | 12 | 11 | 8 | 7 | 5 | 6 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| KDU | 3 | 9 | 3 | 5 | 6 | 2 | 3 | 1 | 4 | 2 | 4 | 1 | 5 | 1 | 1 | 2 | 1 | 1 | 4 | 5 | 4 | 10 | 13 | 17 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 3 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| KOU | 1 | 3 | 3 | 2 | 2 | 4 | 3 | 6 | 6 | 6 | 5 | 11 | 11 | 15 | 8 | 8 | 3 | 7 | 12 | 9 | 6 | 2 | 5 | 3 |
| LER | 4 | 12 | 20 | 10 | 9 | 16 | 13 | 12 | 13 | 12 | 10 | 17 | 10 | 8 | 6 | 9 | 7 | 6 | 15 | 22 | 13 | 12 | 27 | 21 |
| LRM | 17 | 6 | 6 | 13 | 12 | 8 | 8 | 4 | 8 | 5 | 4 | 6 | 9 | 3 | 3 | 4 | 2 | 3 | 6 | 6 | 8 | 7 | 17 | 12 |
| LVV | 6 | 8 | 14 | 9 | 10 | 14 | 9 | 10 | 15 | 17 | 16 | 5 | 3 | 7 | 5 | 7 | 8 | 6 | 16 | 12 | 12 | 9 | 18 | 16 |
| LYC | ||||||||||||||||||||||||
| LZH | 12 | 11 | 18 | 22 | 20 | 13 | 6 | 5 | 16 | 9 | 9 | 4 | 6 | 5 | 2 | 3 | 2 | 3 | 8 | 8 | 4 | 6 | 8 | 11 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 4 | 3 | 4 | 6 | 8 | 7 | 3 | 14 | 15 | 11 | 6 | 11 | 7 | 6 | 13 | 13 | 5 | 5 | 2 | 4 | 5 | 7 | 4 |
| MCQ | 5 | 8 | 10 | 6 | 15 | 11 | 38 | 15 | 14 | 21 | 39 | 27 | 65 | 22 | 6 | 13 | 3 | 6 | 11 | 6 | 22 | 21 | 23 | 17 |
| MEA | 11 | 9 | 14 | 8 | 42 | 37 | 62 | 42 | 17 | 12 | 15 | 29 | 23 | 19 | 9 | 23 | 15 | 18 | 36 | 11 | 18 | 13 | 15 | 13 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| NAQ | 18 | 112 | 48 | 17 | 38 | 36 | 48 | 18 | 39 | 29 | 34 | 45 | 16 | 27 | 11 | 18 | 8 | 14 | 35 | 22 | 22 | 19 | 103 | 75 |
| NCK | 3 | 7 | 12 | 8 | 10 | 14 | 9 | 11 | 14 | 10 | 13 | 7 | 2 | 5 | 5 | 5 | 9 | 5 | 14 | 10 | 10 | 6 | 16 | 13 |
| NEW | 5 | 5 | 8 | 5 | 28 | 24 | 27 | 11 | 11 | 3 | 9 | 14 | 19 | 15 | 10 | 16 | 9 | 18 | 34 | 5 | 5 | 4 | 5 | 11 |
| NGK | 4 | 10 | 16 | 10 | 12 | 17 | 11 | 12 | 14 | 8 | 18 | 11 | 4 | 5 | 5 | 5 | 11 | 7 | 17 | 15 | 14 | 8 | 22 | 18 |
| NUR | 9 | 13 | 20 | 13 | 13 | 21 | 15 | 19 | 14 | 12 | 14 | 8 | 6 | 6 | 5 | 7 | 7 | 4 | 22 | 25 | 22 | 17 | 33 | 31 |
| NVS | 8 | 13 | 6 | 9 | 24 | 19 | 17 | 9 | 10 | 7 | 11 | 10 | 13 | 7 | 5 | 7 | 6 | 5 | 15 | 14 | 8 | 17 | 13 | 13 |
| OTT | 2 | 19 | 16 | 4 | 17 | 16 | 35 | 31 | 13 | 12 | 12 | 10 | 9 | 15 | 9 | 25 | 10 | 6 | 11 | 9 | 14 | 11 | 20 | 10 |
| PAF | 7 | 19 | 22 | 11 | 9 | 14 | 15 | 8 | 9 | 4 | 10 | 12 | 9 | 6 | 4 | 5 | 3 | 3 | 20 | 28 | 7 | 25 | 56 | 32 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 9 | 15 | 25 | 22 | 15 | 3 | 8 | 8 | 15 | 10 | 3 | 6 | 4 | 3 | 1 | 3 | 1 | 2 | 5 | 6 | 4 | 4 | 15 | 10 |
| PPT | 5 | 7 | 5 | 5 | 2 | 2 | 3 | 3 | 3 | 4 | 2 | 2 | 3 | 2 | 1 | 2 | 2 | 8 | 13 | 5 | 9 | 7 | 3 | 13 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 3 | 11 | 11 | 7 | 5 | 8 | 21 | 21 | 12 | 5 | 12 | 9 | 5 | 4 | 4 | 2 | 4 | 13 | 3 | 6 | 6 | 7 | 10 |
| RES | 47 | 53 | 29 | 35 | 53 | 46 | 43 | 33 | 43 | 24 | 82 | 42 | 53 | 16 | 19 | 122 | 63 | 191 | 151 | 121 | 91 | 101 | 85 | 36 |
| SBA | 20 | 33 | 26 | 34 | 38 | 35 | 94 | 40 | 50 | 30 | 48 | 54 | 25 | 31 | 30 | 47 | 27 | 45 | 28 | 34 | 73 | 92 | 114 | 63 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 4 | 4 | 13 | 4 | 18 | 24 | 78 | 31 | 17 | 12 | 21 | 26 | 44 | 18 | 7 | 15 | 9 | 15 | 38 | 11 | 24 | 12 | 8 | 9 |
| SJG | 1 | 5 | 1 | 2 | 3 | 5 | 6 | 9 | 3 | 9 | 11 | 6 | 11 | 16 | 13 | 8 | 4 | 1 | 5 | 10 | 9 | 4 | 3 | 5 |
| SOD | 12 | 20 | 23 | 16 | 23 | 37 | 27 | 24 | 21 | 16 | 19 | 12 | 7 | 12 | 6 | 12 | 6 | 4 | 19 | 46 | 34 | 22 | 40 | 39 |
| SPT | 2 | 3 | 7 | 5 | 5 | 13 | 8 | 4 | 8 | 10 | 13 | 9 | 7 | 5 | 3 | 6 | 8 | 7 | 10 | 6 | 5 | 8 | 7 | 3 |
| STJ | 4 | 24 | 13 | 5 | 6 | 15 | 7 | 13 | 10 | 12 | 14 | 17 | 8 | 13 | 16 | 13 | 6 | 6 | 14 | 9 | 9 | 14 | 17 | 18 |
| SUA | 2 | 6 | 12 | 13 | 8 | 13 | 7 | 11 | 16 | 18 | 15 | 5 | 5 | 7 | 6 | 4 | 6 | 4 | 14 | 10 | 8 | 5 | 13 | 12 |
| TAM | 2 | 2 | 5 | 5 | 5 | 14 | 12 | 7 | 8 | 6 | 10 | 3 | 2 | 5 | 2 | 8 | 5 | 4 | 7 | 4 | 5 | 4 | 6 | 3 |
| TAN | 3 | 6 | 3 | 5 | 6 | 12 | 5 | 6 | 7 | 3 | 5 | 6 | 2 | 6 | 8 | 2 | 1 | 1 | 3 | 5 | 1 | 3 | 10 | 8 |
| TDC | ||||||||||||||||||||||||
| THL | 33 | 41 | 16 | 29 | 74 | 41 | 61 | 37 | 37 | 22 | 52 | 48 | 30 | 85 | 125 | 230 | 88 | 99 | 56 | 48 | 42 | 80 | 100 | 39 |
| THY | 3 | 7 | 12 | 10 | 9 | 15 | 9 | 11 | 15 | 12 | 14 | 6 | 2 | 5 | 5 | 5 | 9 | 5 | 16 | 10 | 10 | 6 | 17 | 14 |
| TRW | 3 | 11 | 13 | 2 | 3 | 4 | 9 | 3 | 5 | 3 | 4 | 6 | 10 | 8 | 13 | 16 | 14 | 5 | 12 | 8 | 7 | 6 | 19 | 11 |
| TSU | 2 | 4 | 4 | 3 | 6 | 4 | 6 | 7 | 5 | 6 | 7 | 7 | 6 | 4 | 5 | 10 | 7 | 3 | 5 | 6 | 3 | 3 | 5 | 5 |
| TUC | 3 | 2 | 5 | 3 | 14 | 9 | 10 | 11 | 5 | 5 | 6 | 7 | 8 | 12 | 11 | 11 | 12 | 13 | 19 | 8 | 5 | 4 | 9 | 10 |
| UPS | 8 | 13 | 21 | 12 | 13 | 20 | 13 | 16 | 13 | 11 | 15 | 7 | 3 | 7 | 4 | 7 | 9 | 6 | 19 | 23 | 19 | 15 | 35 | 31 |
| VAL | 2 | 7 | 13 | 6 | 7 | 14 | 10 | 8 | 9 | 10 | 11 | 10 | 18 | 10 | 5 | 10 | 5 | 6 | 14 | 14 | 7 | 15 | 10 | 5 |
| VIC | 3 | 4 | 8 | 4 | 21 | 20 | 29 | 8 | 10 | 3 | 7 | 13 | 21 | 15 | 10 | 13 | 9 | 15 | 35 | 7 | 6 | 4 | 4 | 8 |
| VSS | 1 | 4 | 6 | 2 | 3 | 4 | 4 | 5 | 7 | 9 | 16 | 10 | 3 | 7 | 14 | 3 | 2 | 3 | 5 | 2 | 5 | 3 | 8 | 3 |
| WNG | 5 | 10 | 19 | 10 | 12 | 18 | 13 | 14 | 12 | 10 | 17 | 11 | 6 | 5 | 4 | 6 | 11 | 8 | 17 | 17 | 14 | 10 | 26 | 20 |
| YKC | 18 | 44 | 48 | 17 | 41 | 46 | 320 | 141 | 100 | 38 | 66 | 51 | 39 | 24 | 14 | 35 | 19 | 21 | 52 | 25 | 95 | 57 | 61 | 54 |
- Date modified: