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 | 4 | 4 | 9 | 3 | 3 | 7 | 6 | 8 | 6 | 8 | 4 | 6 | 10 | 7 | 16 | 5 | 2 | 2 | 4 | 5 | 4 | 1 | 4 |
| ABG | 1 | 13 | 9 | 5 | 5 | 13 | 19 | 18 | 5 | 11 | 9 | 6 | 12 | 3 | 4 | 9 | 2 | 1 | 3 | 3 | 1 | 2 | 4 | 2 |
| ABK | 20 | 19 | 22 | 33 | 18 | 9 | 26 | 18 | 32 | 31 | 46 | 21 | 14 | 14 | 24 | 13 | 8 | 9 | 8 | 7 | 20 | 14 | 17 | 14 |
| AIA | 9 | 4 | 5 | 3 | 13 | 19 | 14 | 12 | 12 | 35 | 39 | 22 | 8 | 4 | 21 | 10 | 18 | 9 | 10 | 9 | 4 | 3 | 6 | 9 |
| AMS | 3 | 5 | 7 | 9 | 8 | 5 | 20 | 11 | 8 | 23 | 12 | 17 | 5 | 5 | 12 | 12 | 3 | 2 | 3 | 3 | 1 | 3 | 5 | 3 |
| API | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| AQU | 3 | 5 | 4 | 5 | 4 | 8 | 9 | 8 | 7 | 20 | 13 | 14 | 6 | 9 | 7 | 4 | 9 | 3 | 3 | 4 | 7 | 5 | 2 | 3 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 3 | 2 | 3 | 2 | 1 | 3 | 3 | 9 | 10 | 6 | 6 | 3 | 3 | 7 | 7 | 10 | 4 | 3 | 3 | 2 | 4 | 2 | 1 |
| ASP | 3 | 10 | 15 | 13 | 6 | 12 | 7 | 13 | 7 | 4 | 10 | 5 | 5 | 5 | 15 | 15 | 8 | 3 | 5 | 3 | 4 | 2 | 14 | 13 |
| BDV | 4 | 7 | 6 | 7 | 5 | 8 | 5 | 8 | 10 | 24 | 15 | 11 | 9 | 10 | 11 | 4 | 9 | 5 | 3 | 4 | 8 | 5 | 3 | 3 |
| BEL | 6 | 8 | 8 | 9 | 6 | 9 | 5 | 7 | 12 | 30 | 14 | 9 | 6 | 14 | 13 | 5 | 10 | 4 | 4 | 5 | 8 | 6 | 4 | 3 |
| BFE | 9 | 10 | 11 | 12 | 9 | 6 | 8 | 12 | 13 | 29 | 12 | 7 | 13 | 11 | 13 | 6 | 8 | 6 | 5 | 5 | 9 | 6 | 6 | 6 |
| BFO | ||||||||||||||||||||||||
| BLC | 36 | 24 | 26 | 19 | 29 | 32 | 10 | 38 | 49 | 33 | 192 | 112 | 78 | 73 | 141 | 90 | 46 | 55 | 43 | 60 | 92 | 47 | 39 | 24 |
| BMT | 1 | 1 | 3 | 3 | 2 | 0 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 1 | 0 | 2 | 1 | 1 |
| BNG | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| BOU | 8 | 6 | 3 | 6 | 13 | 16 | 3 | 11 | 21 | 10 | 25 | 23 | 6 | 11 | 25 | 9 | 23 | 13 | 8 | 6 | 6 | 5 | 10 | 9 |
| BOX | 5 | 10 | 7 | 17 | 9 | 7 | 12 | 5 | 14 | 35 | 15 | 9 | 9 | 16 | 18 | 16 | 11 | 4 | 4 | 5 | 10 | 8 | 7 | 6 |
| BRW | 50 | 52 | 28 | 61 | 42 | 32 | 23 | 90 | 209 | 163 | 109 | 142 | 57 | 67 | 416 | 116 | 89 | 52 | 46 | 51 | 65 | 47 | 42 | 47 |
| BSL | 3 | 5 | 1 | 3 | 8 | 9 | 3 | 6 | 19 | 10 | 30 | 35 | 11 | 7 | 24 | 7 | 15 | 5 | 11 | 9 | 4 | 9 | 14 | 6 |
| CBB | 46 | 37 | 25 | 15 | 20 | 35 | 11 | 46 | 32 | 25 | 133 | 68 | 43 | 27 | 89 | 109 | 69 | 80 | 76 | 66 | 119 | 34 | 73 | 50 |
| CLF | 3 | 7 | 6 | 8 | 6 | 3 | 5 | 12 | 7 | 21 | 9 | 14 | 18 | 9 | 10 | 8 | 8 | 5 | 4 | 5 | 9 | 6 | 4 | 4 |
| CMO | 26 | 9 | 10 | 14 | 13 | 14 | 18 | 134 | 92 | 55 | 246 | 126 | 31 | 34 | 287 | 116 | 32 | 29 | 28 | 28 | 34 | 20 | 17 | 21 |
| CNB | 5 | 17 | 16 | 15 | 7 | 3 | 6 | 9 | 6 | 4 | 24 | 14 | 5 | 5 | 20 | 24 | 11 | 4 | 6 | 4 | 6 | 7 | 11 | 4 |
| CSY | ||||||||||||||||||||||||
| CTA | 10 | 16 | 4 | 10 | 13 | 5 | 5 | 12 | 6 | 3 | 13 | 5 | 4 | 3 | 12 | 16 | 9 | 3 | 5 | 3 | 5 | 10 | 16 | 6 |
| CZT | 4 | 2 | 3 | 7 | 6 | 4 | 7 | 11 | 11 | 26 | 7 | 16 | 3 | 8 | 11 | 15 | 6 | 4 | 3 | 2 | 4 | 2 | 5 | 6 |
| DLR | 3 | 4 | 2 | 4 | 7 | 5 | 2 | 4 | 12 | 6 | 13 | 14 | 7 | 14 | 19 | 8 | 18 | 5 | 4 | 10 | 6 | 6 | 11 | 6 |
| DOU | 5 | 8 | 7 | 8 | 6 | 4 | 5 | 12 | 7 | 23 | 10 | 14 | 17 | 10 | 12 | 7 | 9 | 4 | 3 | 4 | 10 | 7 | 4 | 4 |
| DRV | 48 | 112 | 75 | 47 | 31 | 27 | 38 | 15 | 52 | 55 | 30 | 62 | 13 | 12 | 68 | 66 | 27 | 33 | 12 | 20 | 34 | 17 | 51 | 80 |
| EBR | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 |
| ESK | 4 | 9 | 9 | 10 | 7 | 2 | 5 | 12 | 9 | 16 | 14 | 15 | 19 | 6 | 11 | 10 | 8 | 6 | 4 | 6 | 9 | 8 | 6 | 5 |
| EUA | ||||||||||||||||||||||||
| EYR | 19 | 14 | 7 | 6 | 11 | 7 | 5 | 13 | 13 | 6 | 54 | 39 | 5 | 6 | 18 | 11 | 9 | 4 | 7 | 10 | 12 | 6 | 4 | 14 |
| FCC | 21 | 13 | 12 | 11 | 37 | 186 | 52 | 55 | 93 | 36 | 89 | 137 | 22 | 47 | 61 | 38 | 31 | 32 | 20 | 19 | 29 | 20 | 21 | 12 |
| FRD | 3 | 3 | 3 | 2 | 5 | 15 | 2 | 5 | 16 | 14 | 39 | 48 | 10 | 6 | 25 | 7 | 20 | 8 | 6 | 4 | 9 | 8 | 12 | 3 |
| FRN | 12 | 3 | 2 | 6 | 6 | 13 | 2 | 7 | 8 | 7 | 16 | 12 | 4 | 11 | 13 | 17 | 14 | 15 | 16 | 11 | 4 | 4 | 4 | 6 |
| FUR | 4 | 6 | 6 | 7 | 5 | 7 | 6 | 10 | 8 | 22 | 13 | 12 | 11 | 9 | 10 | 5 | 8 | 5 | 3 | 4 | 8 | 5 | 3 | 3 |
| GCK | ||||||||||||||||||||||||
| GDH | 51 | 30 | 21 | 16 | 28 | 19 | 62 | 60 | 47 | 93 | 139 | 56 | 123 | 119 | 132 | 136 | 102 | 54 | 47 | 32 | 47 | 19 | 43 | 33 |
| GNA | 11 | 7 | 11 | 21 | 13 | 9 | 13 | 6 | 11 | 9 | 9 | 12 | 8 | 10 | 33 | 16 | 11 | 5 | 9 | 4 | 6 | 4 | 12 | 12 |
| GUA | 14 | 10 | 11 | 11 | 16 | 16 | 11 | 3 | 8 | 3 | 4 | 4 | 2 | 2 | 2 | 6 | 5 | 2 | 2 | 5 | 6 | 4 | 6 | 4 |
| GUI | 2 | 3 | 3 | 4 | 5 | 2 | 3 | 10 | 6 | 7 | 7 | 12 | 17 | 11 | 6 | 12 | 7 | 6 | 6 | 2 | 6 | 5 | 3 | 2 |
| GZH | 1 | 0 | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 |
| HAD | 4 | 6 | 7 | 7 | 6 | 2 | 4 | 12 | 7 | 9 | 11 | 14 | 19 | 6 | 8 | 10 | 6 | 4 | 3 | 4 | 8 | 6 | 4 | 4 |
| HBK | 4 | 3 | 3 | 5 | 5 | 12 | 15 | 3 | 9 | 18 | 17 | 8 | 7 | 3 | 8 | 13 | 5 | 4 | 3 | 2 | 3 | 3 | 2 | 3 |
| HER | 5 | 2 | 2 | 5 | 2 | 4 | 11 | 6 | 4 | 9 | 24 | 7 | 10 | 5 | 8 | 14 | 4 | 5 | 3 | 1 | 3 | 4 | 2 | 2 |
| HLP | 6 | 9 | 8 | 10 | 6 | 7 | 7 | 7 | 14 | 35 | 13 | 12 | 6 | 15 | 14 | 5 | 13 | 8 | 5 | 6 | 13 | 8 | 4 | 5 |
| HON | 5 | 8 | 3 | 2 | 4 | 3 | 2 | 3 | 3 | 5 | 15 | 11 | 2 | 3 | 10 | 5 | 16 | 13 | 10 | 9 | 22 | 16 | 10 | 3 |
| HRB | 4 | 7 | 6 | 7 | 5 | 10 | 5 | 6 | 11 | 27 | 14 | 12 | 7 | 12 | 10 | 4 | 10 | 5 | 3 | 4 | 8 | 5 | 3 | 3 |
| HRN | 40 | 57 | 48 | 91 | 59 | 36 | 76 | 74 | 142 | 139 | 207 | 96 | 54 | 71 | 82 | 35 | 54 | 15 | 41 | 20 | 28 | 36 | 87 | 47 |
| HUA | 1 | 2 | 1 | 2 | 3 | 2 | 5 | 5 | 7 | 5 | 8 | 4 | 8 | 3 | 6 | 12 | 12 | 7 | 7 | 5 | 3 | 5 | 3 | 8 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 36 | 27 | 24 | 30 | 26 | 33 | 39 | 47 | 58 | 85 | 183 | 106 | 65 | 80 | 99 | 84 | 123 | 54 | 73 | 95 | 95 | 37 | 42 | 31 |
| IRT | 6 | 5 | 22 | 16 | 20 | 19 | 9 | 8 | 7 | 17 | 6 | 9 | 10 | 8 | 25 | 13 | 3 | 3 | 5 | 5 | 4 | 8 | 7 | 10 |
| IZN | ||||||||||||||||||||||||
| KAK | 2 | 3 | 2 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 |
| KDU | 4 | 15 | 13 | 6 | 6 | 13 | 10 | 11 | 8 | 3 | 7 | 5 | 4 | 4 | 10 | 11 | 6 | 2 | 4 | 2 | 4 | 2 | 14 | 13 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 |
| KOU | 1 | 1 | 2 | 2 | 3 | 2 | 3 | 4 | 6 | 6 | 15 | 11 | 4 | 5 | 16 | 11 | 7 | 12 | 12 | 11 | 2 | 10 | 2 | 2 |
| LER | 5 | 9 | 11 | 10 | 7 | 2 | 9 | 12 | 9 | 20 | 14 | 8 | 19 | 6 | 11 | 10 | 6 | 4 | 3 | 4 | 7 | 10 | 8 | 7 |
| LRM | 15 | 6 | 15 | 20 | 10 | 8 | 15 | 8 | 15 | 9 | 9 | 16 | 8 | 7 | 23 | 7 | 7 | 4 | 6 | 3 | 5 | 3 | 8 | 15 |
| LVV | 4 | 7 | 7 | 7 | 6 | 11 | 5 | 4 | 11 | 30 | 12 | 6 | 5 | 13 | 14 | 5 | 9 | 6 | 4 | 4 | 9 | 5 | 3 | 5 |
| LYC | ||||||||||||||||||||||||
| LZH | 11 | 5 | 15 | 27 | 27 | 13 | 2 | 3 | 9 | 21 | 7 | 5 | 6 | 5 | 12 | 7 | 3 | 3 | 5 | 4 | 3 | 4 | 8 | 9 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 3 | 4 | 5 | 4 | 2 | 3 | 7 | 3 | 10 | 14 | 7 | 6 | 5 | 9 | 6 | 10 | 7 | 8 | 3 | 6 | 5 | 4 | 3 |
| MCQ | 10 | 14 | 12 | 20 | 15 | 4 | 10 | 24 | 38 | 6 | 107 | 68 | 12 | 42 | 221 | 59 | 21 | 8 | 10 | 8 | 10 | 9 | 9 | 11 |
| MEA | 21 | 7 | 5 | 9 | 10 | 51 | 11 | 45 | 45 | 29 | 87 | 104 | 18 | 10 | 57 | 27 | 24 | 19 | 15 | 16 | 12 | 9 | 11 | 7 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 |
| NAQ | 28 | 27 | 16 | 25 | 27 | 25 | 41 | 31 | 26 | 49 | 66 | 30 | 23 | 28 | 25 | 30 | 20 | 17 | 14 | 20 | 22 | 15 | 21 | 11 |
| NCK | 4 | 6 | 6 | 6 | 5 | 8 | 5 | 6 | 10 | 25 | 12 | 11 | 6 | 11 | 9 | 3 | 9 | 5 | 3 | 5 | 8 | 5 | 3 | 3 |
| NEW | ||||||||||||||||||||||||
| NGK | 6 | 8 | 8 | 9 | 7 | 7 | 5 | 10 | 11 | 27 | 11 | 10 | 12 | 10 | 13 | 4 | 9 | 6 | 4 | 4 | 9 | 6 | 5 | 4 |
| NUR | 7 | 10 | 10 | 12 | 7 | 7 | 11 | 7 | 16 | 30 | 13 | 6 | 5 | 13 | 18 | 10 | 11 | 4 | 5 | 5 | 12 | 7 | 6 | 5 |
| NVS | 5 | 8 | 11 | 12 | 17 | 10 | 19 | 12 | 8 | 10 | 13 | 16 | 15 | 10 | 25 | 21 | 7 | 3 | 5 | 6 | 5 | 7 | 5 | 11 |
| OTT | 3 | 5 | 4 | 3 | 8 | 30 | 5 | 9 | 23 | 23 | 60 | 64 | 12 | 11 | 31 | 15 | 23 | 6 | 8 | 8 | 11 | 6 | 13 | 6 |
| PAF | 5 | 5 | 6 | 14 | 10 | 4 | 17 | 6 | 8 | 30 | 17 | 19 | 7 | 7 | 23 | 14 | 8 | 3 | 3 | 4 | 6 | 8 | 8 | 6 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 8 | 7 | 21 | 29 | 19 | 3 | 3 | 6 | 11 | 17 | 4 | 5 | 3 | 3 | 6 | 3 | 4 | 3 | 2 | |||||
| PPT | 5 | 6 | 7 | 3 | 3 | 3 | 2 | 2 | 4 | 4 | 4 | 5 | 2 | 2 | 6 | 3 | 3 | 18 | 13 | 2 | 8 | 19 | 13 | 4 |
| PST | ||||||||||||||||||||||||
| QSB | 3 | 4 | 3 | 8 | 8 | 11 | 6 | 12 | 19 | 24 | 15 | 5 | 5 | 15 | 13 | 9 | 7 | 3 | 3 | 4 | 6 | 5 | 2 | 4 |
| RES | 32 | 35 | 20 | 30 | 22 | 14 | 27 | 50 | 32 | 29 | 154 | 60 | 42 | 27 | 115 | 132 | 108 | 162 | 157 | 93 | 72 | 43 | 35 | 49 |
| SBA | 62 | 67 | 48 | 38 | 23 | 38 | 23 | 18 | 60 | 44 | 48 | 100 | 41 | 20 | 40 | 19 | 46 | 38 | 35 | 52 | 73 | 20 | 69 | 90 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 13 | 9 | 9 | 11 | 7 | 17 | 8 | 21 | 63 | 16 | 86 | 61 | 11 | 10 | 79 | 45 | 25 | 19 | 17 | 21 | 24 | 6 | 7 | 5 |
| SJG | 1 | 2 | 2 | 2 | 2 | 4 | 2 | 3 | 7 | 6 | 19 | 18 | 6 | 6 | 9 | 8 | 17 | 9 | 2 | 7 | 14 | 6 | 4 | 3 |
| SOD | 11 | 16 | 15 | 22 | 15 | 6 | 21 | 11 | 23 | 33 | 23 | 13 | 10 | 12 | 24 | 11 | 9 | 6 | 8 | 5 | 18 | 11 | 10 | 9 |
| SPT | 3 | 4 | 3 | 5 | 4 | 3 | 4 | 10 | 5 | 10 | 9 | 15 | 14 | 6 | 9 | 10 | 5 | 5 | 3 | 3 | 7 | 5 | 3 | 2 |
| STJ | 5 | 2 | 2 | 6 | 16 | 10 | 6 | 7 | 12 | 27 | 52 | 31 | 13 | 12 | 16 | 10 | 17 | 5 | 4 | 10 | 16 | 6 | 8 | 4 |
| SUA | ||||||||||||||||||||||||
| TAM | 2 | 4 | 3 | 5 | 4 | 6 | 6 | 8 | 5 | 12 | 9 | 11 | 4 | 4 | 4 | 7 | 7 | 2 | 5 | 2 | 6 | 5 | 2 | 3 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 57 | 33 | 18 | 28 | 27 | 21 | 44 | 58 | 28 | 62 | 144 | 78 | 41 | 33 | 99 | 227 | 219 | 104 | 94 | 55 | 61 | 47 | 29 | 39 |
| THY | 4 | 7 | 5 | 7 | 4 | 10 | 6 | 6 | 11 | 27 | 14 | 12 | 7 | 12 | 10 | 4 | 10 | 4 | 4 | 5 | 8 | 5 | 3 | 3 |
| TRW | 3 | 2 | 2 | 2 | 5 | 5 | 7 | 5 | 6 | 14 | 15 | 10 | 12 | 4 | 10 | 20 | 20 | 9 | 13 | 11 | 7 | 5 | 4 | 4 |
| TSU | 4 | 3 | 2 | 5 | 4 | 5 | 15 | 10 | 3 | 11 | 24 | 7 | 10 | 2 | 7 | 10 | 5 | 5 | 4 | 2 | 4 | 4 | 2 | 2 |
| TUC | 6 | 5 | 2 | 5 | 7 | 9 | 2 | 6 | 11 | 7 | 12 | 11 | 4 | 16 | 12 | 6 | 20 | 12 | 9 | 7 | 5 | 3 | 11 | 8 |
| UPS | 8 | 9 | 10 | 12 | 6 | 6 | 9 | 10 | 14 | 29 | 12 | 9 | 8 | 11 | 14 | 6 | 10 | 4 | 4 | 4 | 11 | 6 | 5 | 4 |
| VAL | 5 | 5 | 6 | 6 | 6 | 2 | 4 | 10 | 8 | 8 | 12 | 8 | 19 | 11 | 10 | 12 | 4 | 4 | 3 | 4 | 8 | 6 | 4 | 4 |
| VIC | 15 | 8 | 3 | 7 | 7 | 24 | 5 | 15 | 21 | 11 | 36 | 24 | 7 | 8 | 35 | 22 | 14 | 15 | 14 | 11 | 11 | 2 | 7 | 3 |
| VSS | 1 | 3 | 1 | 3 | 4 | 3 | 6 | 4 | 6 | 10 | 10 | 8 | 5 | 16 | 12 | 9 | 8 | 4 | 4 | 3 | 3 | 5 | 3 | 2 |
| WNG | 7 | 9 | 9 | 10 | 7 | 6 | 5 | |||||||||||||||||
| YKC | 15 | 18 | 13 | 26 | 28 | 40 | 23 | 45 | 158 | 65 | 241 | 181 | 49 | 45 | 116 | 46 | 47 | 36 | 32 | 29 | 41 | 32 | 16 | 14 |
- Date modified: