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 | 8 | 4 | 8 | 12 | 11 | 41 | 51 | 26 | 9 | 20 | 31 | 27 | 18 | 5 | 8 | 12 | 2 | 4 | 13 | 3 | 6 | 10 | 11 | 3 |
| ABG | 6 | 8 | 4 | 7 | 12 | 14 | 10 | 6 | 17 | 5 | 5 | 8 | 12 | 10 | 4 | 5 | 4 | 6 | 11 | 7 | 4 | 10 | 11 | 5 |
| ABK | 165 | 34 | 37 | 31 | 66 | 51 | 18 | 16 | 8 | 22 | 32 | 29 | 21 | 34 | 40 | 11 | 19 | 26 | 57 | 80 | 105 | 106 | 140 | 128 |
| AIA | 13 | 9 | 11 | 8 | 31 | 20 | 14 | 5 | 2 | 5 | 8 | 4 | 8 | 14 | 17 | 3 | 12 | 9 | 5 | 6 | 4 | 4 | 7 | 8 |
| AMS | 9 | 8 | 3 | 3 | 15 | 4 | 6 | 7 | 6 | 5 | 8 | 9 | 4 | 4 | 3 | 4 | 4 | 5 | 7 | 4 | 6 | 7 | 6 | 2 |
| API | 3 | 13 | 15 | 16 | 5 | 2 | 6 | 2 | 2 | 3 | 5 | 4 | 3 | 8 | 5 | 3 | 3 | 6 | 2 | 9 | 3 | 10 | 13 | 4 |
| AQU | 12 | 4 | 4 | 4 | 2 | 8 | 2 | 4 | 8 | 8 | 15 | 10 | 5 | 12 | 5 | 4 | 2 | 5 | 9 | 3 | 6 | 11 | 10 | 5 |
| ARS | ||||||||||||||||||||||||
| ASC | 5 | 3 | 3 | 2 | 9 | 6 | 4 | 2 | 2 | 8 | 10 | 10 | 4 | 3 | 5 | 8 | 9 | 13 | 15 | 2 | 4 | 7 | 9 | 4 |
| ASP | 11 | 8 | 5 | 11 | 18 | 7 | 1 | 2 | 2 | 5 | 6 | 5 | 6 | 10 | 17 | 8 | 2 | 6 | 7 | 6 | 7 | 4 | 15 | 12 |
| BDV | 14 | 5 | 5 | 4 | 3 | 9 | 3 | 7 | 5 | 7 | 10 | 7 | 5 | 7 | 7 | 4 | 4 | 7 | 11 | 4 | 8 | 13 | 9 | 7 |
| BEL | 12 | 6 | 7 | 6 | 5 | 10 | 5 | 6 | 5 | 7 | 11 | 13 | 6 | 6 | 10 | 6 | 6 | 11 | 16 | 7 | 7 | 14 | 6 | 7 |
| BFE | 16 | 9 | 7 | 7 | 7 | 12 | 5 | 7 | 11 | 11 | 13 | 17 | 13 | 8 | 15 | 8 | 9 | 14 | 19 | 7 | 10 | 21 | 8 | 7 |
| BFO | ||||||||||||||||||||||||
| BLC | 38 | 40 | 37 | 19 | 499 | 432 | 55 | 18 | 38 | 52 | 58 | 29 | 100 | 62 | 89 | 56 | 62 | 69 | 43 | 57 | 45 | 20 | 126 | 39 |
| BMT | 5 | 6 | 5 | 4 | 13 | 23 | 13 | 4 | 13 | 9 | 8 | 7 | 4 | 6 | 9 | 8 | 2 | 6 | 13 | 4 | 6 | 6 | 10 | 8 |
| BNG | 9 | 3 | 2 | 3 | 5 | 10 | 6 | 17 | 16 | 7 | 8 | 11 | 11 | 13 | 8 | 7 | 3 | 4 | 14 | 3 | 5 | 10 | 11 | 4 |
| BOU | 6 | 6 | 9 | 6 | 22 | 26 | 10 | 3 | 6 | 3 | 8 | 5 | 8 | 5 | 12 | 4 | 6 | 7 | 3 | 6 | 12 | 3 | 13 | 6 |
| BOX | 6 | 8 | 7 | 10 | 13 | 12 | 3 | 10 | 10 | 13 | 22 | 21 | 10 | 11 | 12 | 10 | 8 | 10 | 18 | 12 | 8 | 5 | 9 | 4 |
| BRW | 51 | 70 | 123 | 125 | 59 | 74 | 91 | 39 | 51 | 82 | 31 | 18 | 36 | 334 | 123 | 231 | 92 | 124 | 212 | 100 | 116 | 44 | 37 | 25 |
| BSL | 6 | 7 | 9 | 5 | 26 | 10 | 12 | 4 | 4 | 2 | 7 | 4 | 16 | 6 | 6 | 14 | 11 | 7 | 11 | 7 | 13 | 4 | 10 | 5 |
| CBB | 51 | 44 | 38 | 20 | 56 | 76 | 15 | 9 | 35 | 21 | 33 | 33 | 63 | 32 | 74 | 91 | 73 | 85 | 86 | 94 | 207 | 33 | 135 | 97 |
| CLF | 17 | 5 | 5 | 4 | 3 | 10 | 4 | 3 | 6 | 5 | 9 | 10 | 4 | 7 | 5 | 4 | 5 | 7 | 13 | 4 | 9 | 11 | 12 | 6 |
| CMO | 65 | 74 | 98 | 65 | 76 | 69 | 45 | 20 | 50 | 38 | 62 | 39 | 108 | 174 | 135 | 142 | 48 | 27 | 27 | 22 | 22 | 22 | 37 | 19 |
| CNB | 10 | 6 | 7 | 6 | 15 | 5 | 7 | 3 | 3 | 5 | 7 | 6 | 6 | 20 | 20 | 10 | 4 | 4 | 8 | 6 | 10 | 4 | 4 | 4 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 9 | 6 | 17 | 20 | 6 | 5 | 2 | 2 | 4 | 6 | 5 | 5 | 13 | 16 | 7 | 2 | 4 | 7 | 5 | 4 | 9 | 15 | 8 |
| CZT | 5 | 4 | 5 | 4 | 14 | 12 | 7 | 12 | 16 | 11 | 4 | 8 | 6 | 3 | 4 | 3 | 4 | 4 | 5 | 8 | 7 | 9 | 3 | 6 |
| DLR | 5 | 5 | 7 | 4 | 25 | 15 | 11 | 3 | 5 | 2 | 8 | 6 | 8 | 8 | 5 | 10 | 10 | 5 | 12 | 4 | 12 | 4 | 10 | 4 |
| DOU | 17 | 7 | 7 | 5 | 4 | 11 | 5 | 6 | 6 | 5 | 11 | 10 | 5 | 8 | 6 | 5 | 7 | 8 | 13 | 5 | 10 | 13 | 13 | 7 |
| DRV | 85 | 172 | 138 | 98 | 59 | 83 | 18 | 8 | 15 | 12 | 15 | 10 | 13 | 74 | 33 | 23 | 22 | 35 | 41 | 27 | 55 | 20 | 87 | 51 |
| EBR | 15 | 4 | 5 | 5 | 12 | 18 | 9 | 13 | 14 | 9 | 8 | 18 | 6 | 12 | 8 | 11 | 8 | 9 | 13 | 14 | 8 | 11 | 13 | 5 |
| ESK | 21 | 10 | 10 | 8 | 10 | 18 | 6 | 3 | 11 | 8 | 14 | 12 | 10 | 10 | 15 | 12 | 13 | 17 | 22 | 7 | 15 | 12 | 14 | 9 |
| EUA | ||||||||||||||||||||||||
| EYR | 15 | 13 | 16 | 10 | 20 | 7 | 13 | 3 | 7 | 6 | 10 | 6 | 5 | 19 | 13 | 9 | 4 | 5 | 9 | 6 | 16 | 7 | 7 | 5 |
| FCC | 33 | 50 | 53 | 252 | 334 | 330 | 103 | 78 | 94 | 88 | 62 | 39 | 39 | 44 | 32 | 23 | 22 | 28 | 15 | 48 | 63 | 22 | 121 | 52 |
| FRD | 6 | 7 | 10 | 7 | 27 | 6 | 12 | 5 | 2 | 2 | 8 | 5 | 14 | 8 | 4 | 16 | 15 | 8 | 9 | 10 | 18 | 5 | 10 | 6 |
| FRN | 6 | 6 | 6 | 4 | 22 | 21 | 4 | 3 | 7 | 2 | 7 | 6 | 5 | 4 | 8 | 2 | 4 | 5 | 5 | 4 | 10 | 3 | 10 | 5 |
| FUR | 14 | 5 | 5 | 4 | 3 | 10 | 3 | 5 | 6 | 7 | 12 | 7 | 5 | 7 | 6 | 4 | 5 | 7 | 11 | 4 | 7 | 13 | 9 | 6 |
| GCK | ||||||||||||||||||||||||
| GDH | 53 | 88 | 32 | 21 | 30 | 27 | 25 | 21 | 23 | 81 | 73 | 38 | 37 | 55 | 37 | 53 | 62 | 88 | 59 | 27 | 58 | 29 | 32 | 54 |
| GNA | 3 | 4 | 7 | 6 | 8 | 6 | 2 | 1 | 2 | 5 | 5 | 4 | 6 | 7 | 13 | 8 | 2 | 7 | 7 | 5 | 5 | 2 | 8 | 2 |
| GUA | 12 | 7 | 11 | 15 | 10 | 3 | 5 | 3 | 5 | 4 | 5 | 4 | 4 | 7 | 9 | 3 | 1 | 4 | 7 | 3 | 5 | 1 | 21 | 19 |
| GUI | 11 | 4 | 4 | 3 | 6 | 6 | 3 | 4 | 5 | 10 | 8 | 6 | 3 | 3 | 7 | 10 | 5 | 8 | 11 | 3 | 5 | 8 | 12 | 4 |
| GZH | 7 | 11 | 8 | 3 | 6 | 3 | 3 | 3 | 9 | 6 | 5 | 4 | 3 | 3 | 6 | 5 | 1 | 4 | 8 | 4 | 3 | 3 | 8 | 7 |
| HAD | 19 | 6 | 7 | 5 | 4 | 13 | 5 | 2 | 8 | 5 | 7 | 6 | 4 | 5 | 9 | 6 | 10 | 11 | 17 | 5 | 11 | 10 | 12 | 7 |
| HBK | 9 | 6 | 3 | 4 | 5 | 12 | 3 | 2 | 4 | 4 | 5 | 6 | 7 | 9 | 4 | 3 | 4 | 4 | 12 | 4 | 7 | 12 | 10 | 4 |
| HER | 8 | 4 | 3 | 4 | 3 | 9 | 7 | 4 | 3 | 9 | 13 | 6 | 3 | 7 | 2 | 2 | 3 | 3 | 10 | 3 | 5 | 12 | 10 | 4 |
| HLP | 12 | 8 | 5 | 6 | 6 | 10 | 4 | 7 | 8 | 9 | 15 | 16 | 7 | 7 | 11 | 8 | 8 | 13 | 16 | 7 | 10 | 19 | 10 | 6 |
| HON | 3 | 6 | 6 | 9 | 5 | 4 | 6 | 2 | 3 | 3 | 5 | 5 | 3 | 8 | 5 | 4 | 4 | 2 | 9 | 2 | 14 | 4 | 13 | 4 |
| HRB | 13 | 5 | 5 | 5 | 3 | 8 | 4 | 6 | 4 | 11 | 9 | 7 | 6 | 7 | 6 | 5 | 4 | 8 | 11 | 4 | 7 | 13 | 9 | 6 |
| HRN | 62 | 53 | 43 | 69 | 40 | 87 | 42 | 43 | 43 | 33 | 106 | 80 | 58 | 46 | 69 | 21 | 50 | 47 | 43 | 40 | 72 | 31 | 33 | 15 |
| HUA | 3 | 7 | 5 | 4 | 24 | 4 | 11 | 5 | 3 | 6 | 3 | 7 | 21 | 33 | 27 | 27 | 16 | 41 | 70 | 10 | 20 | 8 | 12 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 35 | 54 | 37 | 26 | 167 | 236 | 117 | 24 | 51 | 51 | 89 | 46 | 47 | 35 | 31 | 31 | 106 | 147 | 105 | 92 | 52 | 24 | 62 | 101 |
| IRT | 7 | 8 | 10 | 14 | 6 | 16 | 30 | 6 | 5 | 7 | 10 | 8 | 7 | 6 | 5 | 10 | 4 | 7 | 14 | 6 | 7 | 3 | 7 | 3 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 6 | 10 | 6 | 3 | 6 | 4 | 7 | 8 | 3 | 5 | 5 | 4 | 5 | 8 | 6 | 1 | 3 | 8 | 4 | 5 | 3 | 5 | 8 |
| KDU | 9 | 8 | 5 | 15 | 21 | 6 | 2 | 2 | 1 | 4 | 5 | 4 | 5 | 7 | 12 | 5 | 1 | 5 | 6 | 5 | 4 | 6 | 14 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 5 | 7 | 5 | 4 | 9 | 4 | 5 | 11 | 5 | 5 | 6 | 4 | 4 | 9 | 7 | 1 | 4 | 9 | 4 | 6 | 4 | 4 | 8 |
| KOU | 3 | 5 | 3 | 3 | 17 | 4 | 8 | 2 | 1 | 7 | 12 | 14 | 17 | 8 | 6 | 9 | 5 | 10 | 19 | 7 | 7 | 3 | 8 | 3 |
| LER | 15 | 9 | 6 | 8 | 21 | 23 | 9 | 6 | 12 | 9 | 13 | 9 | 7 | 14 | 19 | 11 | 12 | 16 | 15 | 6 | 15 | 12 | 8 | 10 |
| LRM | 5 | 5 | 4 | 6 | 10 | 4 | 3 | 6 | 6 | 6 | 6 | 5 | 7 | 8 | 14 | 8 | 2 | 6 | 9 | 6 | 4 | 2 | 11 | 6 |
| LVV | 12 | 5 | 6 | 6 | 6 | 9 | 6 | 5 | 4 | 7 | 10 | 11 | 6 | 7 | 8 | 8 | 4 | 8 | 13 | 6 | 6 | 13 | 8 | 6 |
| LYC | ||||||||||||||||||||||||
| LZH | 3 | 4 | 4 | 5 | 6 | 22 | 18 | 2 | 11 | 9 | 9 | 6 | 4 | 5 | 7 | 6 | 2 | 6 | 12 | 4 | 6 | 3 | 11 | 5 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 8 | 5 | 4 | 3 | 8 | 6 | 5 | 3 | 15 | 22 | 21 | 8 | 9 | 17 | 15 | 10 | 3 | 5 | 14 | 3 | 5 | 6 | 10 | 4 |
| MCQ | 16 | 26 | 49 | 41 | 51 | 31 | 29 | 12 | 18 | 21 | 17 | 12 | 49 | 105 | 106 | 116 | 50 | 25 | 17 | 8 | 17 | 9 | 12 | 5 |
| MEA | 20 | 36 | 32 | 16 | 44 | 30 | 9 | 10 | 18 | 17 | 13 | 7 | 20 | 18 | 19 | 11 | 9 | 11 | 14 | 9 | 20 | 11 | 37 | 18 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 4 | 8 | 16 | 8 | 5 | 5 | 4 | 3 | 8 | 4 | 7 | 6 | 5 | 5 | 12 | 11 | 2 | 4 | 11 | 6 | 6 | 3 | 6 | 14 |
| NAQ | 49 | 92 | 40 | 107 | 239 | 200 | 135 | 20 | 21 | 29 | 19 | 26 | 12 | 13 | 34 | 43 | 48 | 72 | 40 | 43 | 73 | 41 | 46 | 99 |
| NCK | 12 | 5 | 5 | 4 | 3 | 7 | 4 | 5 | 4 | 10 | 10 | 7 | 6 | 7 | 5 | 4 | 4 | 7 | 10 | 4 | 7 | 12 | 8 | 6 |
| NEW | 12 | 14 | 17 | 9 | 38 | 36 | 6 | 5 | 9 | 4 | 9 | 7 | 12 | 4 | 6 | 6 | 6 | 11 | 9 | 5 | 11 | 5 | 22 | 11 |
| NGK | 16 | 7 | 6 | 6 | 5 | 11 | 4 | 7 | 6 | 6 | 11 | 12 | 4 | 6 | 8 | 7 | 6 | 10 | 15 | 6 | 9 | 17 | 7 | 7 |
| NUR | 8 | 8 | 5 | 10 | 13 | 15 | 3 | 13 | 13 | 13 | 19 | 19 | 12 | 14 | 16 | 9 | 8 | 12 | 17 | 13 | 8 | 12 | 10 | 5 |
| NVS | 7 | 4 | 8 | 2 | 11 | 8 | 14 | 8 | 6 | 7 | 14 | 10 | 7 | 6 | 7 | 7 | 6 | 4 | 12 | 7 | 6 | 6 | 8 | 2 |
| OTT | 9 | 9 | 11 | 9 | 44 | 22 | 9 | 4 | 4 | 4 | 10 | 10 | 15 | 9 | 9 | 7 | 21 | 23 | 12 | 14 | 27 | 6 | 15 | 11 |
| PAF | 23 | 7 | 6 | 9 | 20 | 7 | 4 | 11 | 9 | 6 | 11 | 9 | 5 | 6 | 6 | 7 | 8 | 5 | 10 | 14 | 12 | 26 | 6 | 3 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 8 | 14 | 13 | 5 | 5 | 4 | 2 | 6 | 10 | 6 | 7 | 5 | 5 | 4 | 7 | 6 | 1 | 5 | 11 | 5 | 5 | 3 | 12 | 8 |
| PPT | 7 | 6 | 3 | 5 | 6 | 6 | 3 | 2 | 3 | 2 | 4 | 3 | 2 | 8 | 3 | 5 | 8 | 8 | 4 | 11 | 4 | 3 | 7 | 8 |
| PST | ||||||||||||||||||||||||
| QSB | 12 | 7 | 5 | 6 | 4 | 7 | 4 | 6 | 13 | 19 | 7 | 5 | 11 | 19 | 7 | 4 | 5 | 5 | 13 | 5 | 6 | 10 | 13 | 6 |
| RES | 24 | 57 | 49 | 35 | 51 | 62 | 40 | 13 | 25 | 34 | 32 | 44 | 46 | 44 | 33 | 43 | 80 | 123 | 115 | 38 | 164 | 50 | 87 | 46 |
| SBA | 34 | 66 | 66 | 32 | 58 | 60 | 52 | 10 | 26 | 13 | 24 | 33 | 17 | 53 | 29 | 32 | 55 | 66 | 60 | 22 | 36 | 12 | 47 | 31 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 16 | 28 | 28 | 12 | 24 | 26 | 13 | 6 | 24 | 7 | 9 | 9 | 17 | 7 | 8 | 8 | 8 | 11 | 11 | 9 | 8 | 10 | 19 | 10 |
| SJG | 2 | 3 | 4 | 2 | 16 | 4 | 9 | 2 | 1 | 1 | 3 | 9 | 9 | 11 | 6 | 3 | 4 | 4 | 15 | 10 | 14 | 3 | 7 | 3 |
| SOD | 103 | 22 | 20 | 21 | 49 | 33 | 11 | 16 | 10 | 22 | 31 | 27 | 18 | 28 | 27 | 11 | 11 | 20 | 35 | 60 | 76 | 57 | 65 | 59 |
| SPT | 15 | 5 | 5 | 4 | 3 | 7 | 2 | 2 | 7 | 5 | 6 | 17 | 8 | 9 | 6 | 4 | 3 | 6 | 11 | 5 | 7 | 10 | 13 | 4 |
| STJ | 5 | 9 | 8 | 7 | 12 | 10 | 3 | 3 | 3 | 7 | 11 | 16 | 11 | 7 | 6 | 15 | 20 | 23 | 15 | 9 | 26 | 6 | 10 | 4 |
| SUA | ||||||||||||||||||||||||
| TAM | 11 | 5 | 4 | 3 | 5 | 5 | 1 | 14 | 20 | 19 | 4 | 7 | 9 | 11 | 13 | 13 | 4 | 5 | 11 | 2 | 5 | 10 | 12 | 4 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 16 | 35 | 39 | 21 | 21 | 32 | 27 | 17 | 17 | 36 | 20 | 29 | 43 | 73 | 43 | 60 | 41 | 62 | 82 | 24 | 74 | 29 | 25 | 27 |
| THY | 13 | 6 | 5 | 5 | 4 | 8 | 4 | 6 | 3 | 13 | 11 | 7 | 7 | 9 | 6 | 5 | 4 | 7 | 11 | 4 | 7 | 13 | 9 | 6 |
| TRW | 4 | 5 | 8 | 5 | 23 | 7 | 12 | 4 | 1 | 4 | 4 | 6 | 7 | 8 | 9 | 3 | 13 | 4 | 11 | 3 | 3 | 4 | 8 | 8 |
| TSU | 11 | 5 | 4 | 4 | 7 | 12 | 2 | 3 | 4 | 6 | 4 | 8 | 7 | 9 | 5 | 2 | 6 | 4 | 12 | 4 | 6 | 12 | 11 | 5 |
| TUC | 5 | 5 | 7 | 4 | 20 | 19 | 8 | 3 | 6 | 2 | 7 | 6 | 5 | 3 | 10 | 4 | 6 | 4 | 8 | 4 | 10 | 2 | 11 | 5 |
| UPS | 9 | 7 | 4 | 8 | 10 | 13 | 4 | 9 | 11 | 14 | 14 | 15 | 10 | 13 | 16 | 7 | 9 | 11 | 15 | 10 | 10 | 20 | 13 | 6 |
| VAL | 18 | 5 | 6 | 4 | 5 | 10 | 5 | 2 | 6 | 5 | 8 | 8 | 4 | 4 | 10 | 8 | 9 | 11 | 16 | 4 | 11 | 8 | 13 | 5 |
| VIC | 12 | 12 | 14 | 7 | 32 | 31 | 6 | 4 | 11 | 3 | 7 | 7 | 11 | 4 | 5 | 5 | 6 | 11 | 5 | 4 | 7 | 4 | 17 | 8 |
| VSS | 5 | 5 | 5 | 3 | 16 | 5 | 8 | 2 | 2 | 7 | 8 | 12 | 13 | 10 | 6 | 11 | 10 | 19 | 23 | 3 | 3 | 5 | 9 | 6 |
| WNG | 17 | 8 | 7 | 6 | 7 | 15 | 5 | 8 | 10 | 10 | 11 | 15 | 8 | 7 | 12 | 8 | 8 | 13 | 18 | 7 | 11 | 19 | 8 | 8 |
| YKC | 51 | 82 | 63 | 91 | 183 | 171 | 125 | 29 | 203 | 88 | 45 | 47 | 76 | 125 | 88 | 63 | 50 | 23 | 23 | 15 | 36 | 32 | 118 | 39 |
- Date modified: