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 | 2 | 6 | 11 | 16 | 34 | 36 | 35 | 12 | 24 | 43 | 36 | 14 | 6 | 7 | 3 | 7 | 6 | 11 | 9 | 14 | 15 | 10 | 11 |
| ABG | 4 | 10 | 7 | 17 | 10 | 10 | 14 | 13 | 20 | 12 | 7 | 6 | 8 | 6 | 5 | 7 | 8 | 7 | 8 | 8 | 14 | 10 | 10 | 10 |
| ABK | 14 | 9 | 21 | 28 | 30 | 14 | 16 | 21 | 19 | 23 | 10 | 30 | 11 | 43 | 31 | 17 | 46 | 42 | 50 | 66 | 217 | 189 | 121 | 129 |
| AIA | 5 | 3 | 8 | 13 | 18 | 5 | 7 | 4 | 12 | 13 | 5 | 7 | 4 | 5 | 9 | 3 | 7 | 5 | 8 | 7 | 4 | 9 | 14 | 10 |
| AMS | 2 | 4 | 6 | 3 | 3 | 7 | 11 | 5 | 7 | 9 | 3 | 3 | 3 | 3 | 3 | 6 | 4 | 6 | 10 | 13 | 8 | 13 | 6 | 10 |
| API | 5 | 7 | 8 | 7 | 6 | 3 | 5 | 4 | 9 | 6 | 4 | 2 | 5 | 3 | 3 | 5 | 4 | 4 | 5 | 4 | 6 | 5 | 8 | 4 |
| AQU | 1 | 2 | 3 | 3 | 2 | 6 | 7 | 7 | 4 | 6 | 4 | 11 | 7 | 6 | 1 | 3 | 5 | 4 | 12 | 9 | 15 | 16 | 11 | 15 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 3 | 7 | 7 | 4 | 2 | 10 | 4 | 2 | 5 | 3 | 2 | 4 | 3 | 3 | 3 | 7 | 7 | 10 | 8 | 8 | 4 | 7 | 11 |
| ASP | 4 | 3 | 2 | 6 | 8 | 5 | 8 | 7 | 7 | 6 | 6 | 4 | 4 | 3 | 5 | 3 | 4 | 3 | 15 | 11 | 3 | 4 | 6 | 12 |
| BDV | 2 | 2 | 2 | 2 | 3 | 6 | 7 | 11 | 6 | 7 | 4 | 6 | 7 | 5 | 3 | 5 | 7 | 4 | 13 | 8 | 15 | 19 | 14 | 15 |
| BEL | 4 | 4 | 3 | 4 | 4 | 10 | 7 | 10 | 8 | 7 | 6 | 8 | 10 | 8 | 8 | 9 | 11 | 7 | 16 | 11 | 15 | 22 | 19 | 13 |
| BFE | 4 | 3 | 6 | 5 | 4 | 8 | 9 | 11 | 9 | 8 | 8 | 8 | 8 | 11 | 13 | 8 | 19 | 9 | 20 | 17 | 16 | 29 | 27 | 12 |
| BFO | ||||||||||||||||||||||||
| BLC | 48 | 32 | 35 | 45 | 40 | 42 | 25 | 25 | 121 | 191 | 74 | 67 | 33 | 65 | 57 | 45 | 44 | 44 | 43 | 47 | 126 | 76 | 70 | 107 |
| BMT | 11 | 8 | 4 | 7 | 19 | 16 | 14 | 11 | 14 | 14 | 7 | 5 | 5 | 5 | 4 | 4 | 7 | 6 | 9 | 15 | 4 | 4 | 8 | 14 |
| BNG | 1 | 2 | 6 | 6 | 6 | 4 | 20 | 9 | 12 | 7 | 8 | 14 | 9 | 12 | 5 | 4 | 6 | 5 | 13 | 10 | 14 | 13 | 11 | 12 |
| BOU | 4 | 3 | 4 | 6 | 5 | 4 | 11 | 15 | 18 | 21 | 7 | 4 | 5 | 4 | 12 | 6 | 7 | 4 | 10 | 14 | 7 | 12 | 7 | 13 |
| BOX | 4 | 4 | 9 | 9 | 5 | 11 | 10 | 8 | 10 | 12 | 11 | 15 | 8 | 15 | 16 | 10 | 18 | 9 | 19 | 15 | 9 | 15 | 15 | 17 |
| BRW | 46 | 29 | 47 | 80 | 114 | 104 | 75 | 40 | 426 | 253 | 112 | 59 | 45 | 70 | 80 | 128 | 104 | 217 | 248 | 421 | 58 | 75 | 56 | 53 |
| BSL | 3 | 2 | 3 | 9 | 9 | 4 | 11 | 9 | 11 | 15 | 6 | 4 | 3 | 12 | 11 | 11 | 8 | 2 | 5 | 7 | 8 | 7 | 7 | 9 |
| CBB | 25 | 24 | 43 | 49 | 29 | 34 | 33 | 25 | 44 | 41 | 52 | 47 | 32 | 28 | 94 | 70 | 57 | 148 | 146 | 72 | 48 | 119 | 63 | 49 |
| CLF | 2 | 2 | 3 | 3 | 3 | 5 | 9 | 9 | 5 | 7 | 4 | 5 | 5 | 6 | 3 | 5 | 9 | 5 | 13 | 7 | 18 | 17 | 13 | 19 |
| CMO | 21 | 18 | 27 | 37 | 38 | 40 | 35 | 56 | 148 | 71 | 71 | 50 | 24 | 69 | 71 | 57 | 22 | 25 | 18 | 47 | 25 | 21 | 22 | 46 |
| CNB | 5 | 2 | 4 | 11 | 15 | 8 | 11 | 9 | 10 | 12 | 8 | 4 | 5 | 5 | 6 | 6 | 2 | 4 | 14 | 13 | 3 | 8 | 4 | 9 |
| CSY | ||||||||||||||||||||||||
| CTA | 1 | 4 | 2 | 4 | 9 | 11 | 6 | 9 | 10 | 7 | 6 | 4 | 4 | 3 | 5 | 3 | 4 | 3 | 13 | 10 | 4 | 4 | 4 | 11 |
| CZT | 4 | 2 | 5 | 8 | 4 | 5 | 6 | 11 | 6 | 9 | 2 | 4 | 4 | 3 | 2 | 3 | 2 | 6 | 15 | 13 | 23 | 26 | 14 | 11 |
| DLR | 2 | 2 | 3 | 8 | 6 | 3 | 11 | 11 | 12 | 18 | 6 | 3 | 8 | 4 | 10 | 2 | 5 | 2 | 4 | 8 | 5 | 8 | 7 | 9 |
| DOU | 2 | 2 | 3 | 5 | 3 | 7 | 9 | 10 | 7 | 8 | 5 | 6 | 6 | 6 | 5 | 7 | 11 | 6 | 14 | 8 | 19 | 20 | 16 | 21 |
| DRV | 37 | 29 | 27 | 27 | 26 | 41 | 24 | 11 | 40 | 40 | 21 | 15 | 10 | 9 | 8 | 25 | 17 | 8 | 50 | 79 | 33 | 43 | 26 | 36 |
| EBR | 2 | 2 | 4 | 3 | 9 | 8 | 12 | 12 | 9 | 9 | 6 | 13 | 9 | 10 | 4 | 9 | 8 | 6 | 18 | 16 | 19 | 15 | 13 | 18 |
| ESK | 3 | 3 | 4 | 8 | 7 | 8 | 11 | 12 | 8 | 15 | 9 | 7 | 8 | 12 | 12 | 8 | 22 | 9 | 20 | 19 | 26 | 28 | 22 | 21 |
| EUA | ||||||||||||||||||||||||
| EYR | 4 | 2 | 3 | 5 | 15 | 6 | 9 | 4 | 14 | 7 | 7 | 3 | 6 | 3 | 4 | 7 | 4 | 3 | 6 | 9 | 11 | 14 | 5 | 5 |
| FCC | 24 | 18 | 21 | 102 | 146 | 75 | 27 | 214 | 106 | 162 | 78 | 57 | 88 | 43 | 18 | 16 | 28 | 25 | 25 | 30 | 102 | 43 | 62 | 86 |
| FRD | 3 | 2 | 5 | 10 | 15 | 4 | 10 | 7 | 8 | 7 | 5 | 6 | 5 | 12 | 16 | 14 | 15 | 7 | 4 | 9 | 9 | 14 | 12 | 12 |
| FRN | 6 | 6 | 3 | 4 | 7 | 5 | 10 | 14 | 15 | 17 | 5 | 4 | 8 | 5 | 4 | 3 | 10 | 6 | 5 | 10 | 3 | 6 | 6 | 9 |
| FUR | 2 | 2 | 2 | 3 | 2 | 6 | 7 | 11 | 5 | 7 | 5 | 6 | 5 | 6 | 3 | 4 | 8 | 5 | 13 | 8 | 16 | 19 | 14 | 15 |
| GCK | ||||||||||||||||||||||||
| GDH | 24 | 10 | 22 | 31 | 22 | 34 | 29 | 21 | 71 | 129 | 70 | 59 | 48 | 33 | 76 | 59 | 166 | 244 | 58 | 34 | 50 | 69 | 64 | 31 |
| GNA | 4 | 9 | 10 | 10 | 9 | 2 | 9 | 3 | 3 | 5 | 4 | 4 | 3 | 3 | 3 | 3 | 4 | 2 | 17 | 13 | 2 | 4 | 8 | 3 |
| GUA | 16 | 3 | 6 | 14 | 14 | 18 | 10 | 13 | 12 | 8 | 4 | 3 | 4 | 4 | 2 | 3 | 4 | 1 | 7 | 6 | 6 | 9 | 21 | 11 |
| GUI | 2 | 3 | 7 | 5 | 5 | 4 | 11 | 6 | 8 | 10 | 3 | 2 | 8 | 7 | 4 | 8 | 11 | 9 | 17 | 8 | 13 | 7 | 8 | 15 |
| GZH | 8 | 10 | 14 | 8 | 10 | 5 | 12 | 23 | 18 | 10 | 5 | 4 | 4 | 5 | 2 | 3 | 6 | 3 | 8 | 9 | 3 | 5 | 3 | 9 |
| HAD | 2 | 3 | 4 | 4 | 4 | 5 | 9 | 11 | 6 | 10 | 6 | 4 | 5 | 6 | 6 | 7 | 14 | 6 | 16 | 11 | 21 | 19 | 15 | 20 |
| HBK | 1 | 2 | 8 | 8 | 4 | 4 | 8 | 7 | 7 | 4 | 13 | 12 | 3 | 4 | 2 | 8 | 5 | 5 | 13 | 10 | 17 | 15 | 10 | 11 |
| HER | 1 | 2 | 7 | 8 | 3 | 5 | 6 | 14 | 6 | 4 | 2 | 7 | 2 | 2 | 1 | 6 | 4 | 4 | 12 | 8 | 16 | 11 | 8 | 11 |
| HLP | 3 | 3 | 3 | 4 | 4 | 12 | 9 | 12 | 9 | 7 | 7 | 10 | 5 | 10 | 11 | 8 | 17 | 8 | 17 | 11 | 15 | 26 | 26 | 11 |
| HON | 7 | 4 | 2 | 3 | 6 | 2 | 6 | 4 | 7 | 7 | 3 | 2 | 5 | 4 | 2 | 3 | 2 | 3 | 3 | 4 | 8 | 8 | 11 | 4 |
| HRB | 2 | 2 | 2 | 2 | 4 | 6 | 7 | 12 | 6 | 10 | 7 | 8 | 6 | 7 | 3 | 5 | 8 | 5 | 13 | 9 | 15 | 19 | 15 | 14 |
| HRN | 30 | 16 | 36 | 48 | 51 | 30 | 27 | 28 | 33 | 80 | 47 | 66 | 31 | 42 | 90 | 20 | 40 | 34 | 60 | 29 | 54 | 38 | 26 | 31 |
| HUA | 2 | 2 | 5 | 8 | 9 | 2 | 8 | 5 | 5 | 6 | 4 | 10 | 45 | 47 | 42 | 14 | 7 | 41 | 46 | 37 | 7 | 14 | 8 | 11 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 133 | 32 | 82 | 364 | 210 | 76 | 43 | 55 | 117 | 133 | 52 | 86 | 47 | 35 | 30 | 31 | 84 | 91 | 89 | 156 | 72 | 105 | 130 | 62 |
| IRT | 8 | 14 | 10 | 8 | 10 | 22 | 12 | 11 | 8 | 21 | 6 | 7 | 6 | 7 | 5 | 5 | 5 | 6 | 9 | 20 | 3 | 6 | 10 | 9 |
| IZN | ||||||||||||||||||||||||
| KAK | 5 | 6 | 15 | 12 | 11 | 5 | 9 | 14 | 13 | 9 | 5 | 3 | 5 | 4 | 3 | 2 | 5 | 3 | 7 | 10 | 2 | 7 | 2 | 2 |
| KDU | 4 | 7 | 3 | 6 | 6 | 8 | 8 | 18 | 11 | 4 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 2 | 12 | 9 | 3 | 6 | 8 | 4 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 6 | 17 | 12 | 13 | 3 | 9 | 18 | 18 | 11 | 6 | 4 | 5 | 4 | 3 | 3 | 5 | 4 | 7 | 10 | 2 | 9 | 4 | 6 |
| KOU | 1 | 1 | 6 | 7 | 7 | 2 | 7 | 3 | 4 | 7 | 3 | 5 | 18 | 12 | 6 | 3 | 9 | 11 | 20 | 1 | 4 | 7 | 6 | 9 |
| LER | 3 | 2 | 6 | 7 | 12 | 8 | 9 | 14 | 9 | 9 | 9 | 8 | 9 | 15 | 16 | 6 | 28 | 13 | 17 | 23 | 15 | 37 | 26 | 13 |
| LRM | 2 | 5 | 5 | 8 | 10 | 2 | 8 | 9 | 4 | 7 | 5 | 4 | 3 | 3 | 3 | 3 | 5 | 2 | 16 | 13 | 4 | 4 | 9 | 3 |
| LVV | 2 | 3 | 3 | 4 | 5 | 8 | 6 | 12 | 9 | 10 | 5 | 10 | 9 | 9 | 6 | 6 | 10 | 8 | 14 | 8 | 15 | 18 | 17 | 13 |
| LYC | ||||||||||||||||||||||||
| LZH | 8 | 7 | 1 | 8 | 19 | 11 | 15 | 13 | 17 | 12 | 5 | 4 | 5 | 5 | 3 | 4 | 7 | 5 | 7 | 13 | 4 | 6 | 4 | 14 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 2 | 7 | 5 | 4 | 3 | 10 | 4 | 12 | 15 | 15 | 8 | 4 | 12 | 11 | 8 | 9 | 7 | 14 | 8 | 11 | 6 | 8 | 14 |
| MCQ | 11 | 8 | 8 | 14 | 13 | 14 | 20 | 16 | 78 | 57 | 42 | 25 | 17 | 28 | 52 | 35 | 6 | 7 | 17 | 24 | 8 | 14 | 13 | 24 |
| MEA | 7 | 9 | 13 | 12 | 12 | 5 | 14 | 27 | 76 | 50 | 15 | 15 | 12 | 14 | 13 | 12 | 24 | 11 | 17 | 26 | 18 | 22 | 26 | 42 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 8 | 7 | 17 | 12 | 12 | 9 | 12 | 12 | 12 | 13 | 7 | 5 | 5 | 5 | 4 | 3 | 7 | 6 | 9 | 13 | 4 | 9 | 6 | 6 |
| NAQ | 69 | 74 | 172 | 117 | 200 | 32 | 31 | 56 | 35 | 73 | 12 | 14 | 12 | 16 | 14 | 11 | 50 | 18 | 49 | 72 | 110 | 57 | 118 | 92 |
| NCK | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 10 | 6 | 9 | 5 | 6 | 5 | 6 | 3 | 4 | 7 | 5 | 12 | 9 | 14 | 17 | 13 | 13 |
| NEW | 4 | 6 | 7 | 8 | 11 | 5 | 14 | 18 | 28 | 16 | 9 | 8 | 8 | 6 | 13 | 10 | 16 | 7 | 11 | 22 | 9 | 12 | 13 | 24 |
| NGK | 3 | 3 | 2 | 3 | 4 | 7 | 7 | 10 | 8 | 6 | 5 | 8 | 7 | 6 | 7 | 6 | 13 | 7 | 16 | 10 | 17 | 25 | 22 | 13 |
| NUR | 3 | 3 | 8 | 8 | 6 | 10 | 9 | 13 | 12 | 10 | 9 | 14 | 9 | 19 | 19 | 11 | 24 | 9 | 22 | 16 | 9 | 21 | 23 | 11 |
| NVS | 4 | 9 | 12 | 14 | 7 | 6 | 12 | 17 | 5 | 14 | 6 | 6 | 7 | 7 | 7 | 5 | 11 | 8 | 10 | 17 | 4 | 6 | 5 | 9 |
| OTT | 5 | 3 | 5 | 10 | 17 | 6 | 11 | 15 | 8 | 10 | 6 | 6 | 6 | 14 | 15 | 4 | 16 | 15 | 7 | 15 | 19 | 19 | 17 | 21 |
| PAF | 4 | 3 | 6 | 7 | 5 | 7 | 8 | 11 | 8 | 11 | 4 | 4 | 5 | 4 | 5 | 5 | 3 | 7 | 28 | 23 | 11 | 24 | 17 | 12 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 8 | 10 | 10 | 9 | 12 | 6 | 12 | 23 | 21 | 9 | 5 | 4 | 4 | 4 | 3 | 4 | 6 | 4 | 8 | 9 | 4 | 7 | 5 | 7 |
| PPT | 1 | 2 | 2 | 3 | 4 | 4 | 5 | 5 | 8 | 7 | 2 | 1 | 4 | 4 | 3 | 6 | 6 | 7 | 3 | 6 | 6 | 10 | 9 | 10 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 2 | 3 | 7 | 5 | 7 | 15 | 6 | 5 | 9 | 5 | 5 | 5 | 9 | 6 | 5 | 8 | 5 | 13 | 11 | 16 | 18 | 14 | 14 |
| RES | 53 | 12 | 21 | 32 | 29 | 20 | 49 | 18 | 55 | 35 | 74 | 68 | 24 | 84 | 108 | 55 | 287 | 176 | 133 | 115 | 47 | 43 | 53 | 38 |
| SBA | 24 | 24 | 10 | 20 | 39 | 30 | 17 | 23 | 75 | 67 | 22 | 33 | 13 | 22 | 29 | 13 | 47 | 30 | 26 | 30 | 20 | 27 | 38 | 48 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 8 | 6 | 14 | 10 | 11 | 9 | 15 | 16 | 47 | 19 | 15 | 8 | 8 | 6 | 12 | 4 | 19 | 13 | 9 | 25 | 5 | 8 | 15 | 21 |
| SJG | 1 | 1 | 5 | 6 | 7 | 2 | 6 | 3 | 3 | 5 | 2 | 4 | 16 | 7 | 2 | 2 | 5 | 5 | 12 | 2 | 2 | 8 | 4 | 6 |
| SOD | 5 | 5 | 17 | 18 | 18 | 13 | 12 | 17 | 16 | 25 | 10 | 27 | 11 | 36 | 27 | 17 | 37 | 24 | 38 | 54 | 169 | 114 | 102 | 121 |
| SPT | 1 | 2 | 5 | 3 | 3 | 5 | 9 | 8 | 3 | 8 | 3 | 8 | 8 | 4 | 2 | 3 | 6 | 4 | 16 | 9 | 17 | 13 | 11 | 18 |
| STJ | 7 | 20 | 18 | 6 | 19 | 21 | 20 | 11 | 17 | |||||||||||||||
| SUA | 2 | 3 | 3 | 3 | 6 | 6 | 7 | 13 | 5 | 13 | 11 | 9 | 2 | 9 | 5 | 4 | 7 | 5 | 12 | 6 | 15 | 18 | 17 | 12 |
| TAM | 1 | 2 | 6 | 5 | 4 | 4 | 11 | 3 | 10 | 9 | 4 | 2 | 6 | 6 | 7 | 7 | 13 | 6 | 14 | 11 | 15 | 12 | 11 | 15 |
| TAN | 1 | 2 | 6 | 7 | 4 | 7 | 17 | 4 | 11 | 13 | 13 | 9 | 2 | 3 | 2 | 5 | 4 | 6 | 10 | 9 | 14 | 15 | 7 | 7 |
| TDC | ||||||||||||||||||||||||
| THL | 53 | 23 | 20 | 20 | 13 | 23 | 37 | 17 | 39 | 33 | 77 | 68 | 41 | 58 | 72 | 46 | 75 | 41 | 39 | 79 | 56 | 17 | 35 | 21 |
| THY | 2 | 2 | 3 | 3 | 3 | 5 | 7 | 11 | 6 | 11 | 7 | 7 | 5 | 7 | 3 | 5 | 7 | 5 | 13 | 10 | 16 | 19 | 15 | 15 |
| TRW | 3 | 3 | 6 | 10 | 10 | 2 | 8 | 6 | 5 | 11 | 2 | 6 | 9 | 6 | 5 | 5 | 9 | 7 | 10 | 8 | 5 | 4 | 8 | 8 |
| TSU | 1 | 3 | 7 | 8 | 3 | 5 | 12 | 5 | 6 | 4 | 13 | 10 | 4 | 6 | 4 | 7 | 7 | 5 | 13 | 11 | 16 | 13 | 11 | 12 |
| TUC | 4 | 3 | 3 | 7 | 5 | 4 | 11 | 13 | 14 | 19 | 6 | 3 | 9 | 7 | 7 | 5 | 8 | 3 | 4 | 6 | 6 | 7 | 5 | 9 |
| UPS | 2 | 3 | 5 | 6 | 7 | 9 | 7 | 13 | 11 | 7 | 7 | 11 | 12 | 16 | 16 | 9 | 22 | 9 | 19 | 14 | 11 | 27 | 26 | 9 |
| VAL | 2 | 3 | 4 | 5 | 3 | 5 | 9 | 10 | 5 | 10 | 6 | 5 | 4 | 6 | 4 | 7 | 17 | 7 | 14 | 12 | 22 | 15 | 14 | 20 |
| VIC | 4 | 5 | 6 | 6 | 10 | 5 | 12 | 14 | 19 | 13 | 5 | 7 | 9 | 3 | 9 | 9 | 16 | 5 | 8 | 19 | 8 | 9 | 12 | 18 |
| VSS | 2 | 2 | 8 | 9 | 8 | 2 | 9 | 4 | 5 | 7 | 5 | 5 | 12 | 14 | 13 | 13 | 15 | 13 | 17 | 6 | 8 | 3 | 7 | 10 |
| WNG | 3 | 3 | 3 | 4 | 6 | 9 | 8 | 11 | 9 | 8 | 6 | 8 | 6 | 8 | 10 | 7 | 17 | 8 | 18 | 16 | 18 | 30 | 28 | 13 |
| YKC | 15 | 18 | 35 | 20 | 27 | 34 | 32 | 427 | 210 | 236 | 74 | 53 | 61 | 83 | 59 | 50 | 33 | 17 | 22 | 37 | 41 | 50 | 62 | 78 |
- Date modified: