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 | 7 | 9 | 6 | 0 | 15 | 3 | 2 | 9 | 8 | 4 | 5 | 6 | 10 | 2 | 3 | 6 | 4 | 5 | 4 | 2 | 4 | 3 | 7 |
| ABG | 5 | 17 | 5 | 9 | 21 | 24 | 12 | 2 | 11 | 7 | 9 | 7 | 4 | 6 | 2 | 4 | 3 | 2 | 1 | 5 | 2 | 1 | 2 | 6 |
| ABK | 22 | 77 | 211 | 134 | 69 | 21 | 26 | 27 | 58 | 25 | 11 | 12 | 16 | 18 | 11 | 10 | 15 | 11 | 34 | 36 | 20 | 34 | 30 | 141 |
| AIA | 5 | 12 | 62 | 34 | 18 | 32 | 30 | 24 | 16 | 23 | 5 | 10 | 7 | 7 | 14 | 14 | 7 | 3 | 3 | 5 | 4 | 5 | 7 | 97 |
| AMS | 5 | 5 | 41 | 14 | 11 | 7 | 9 | 9 | 6 | 6 | 8 | 11 | 4 | 6 | 2 | 4 | 12 | 9 | 14 | 5 | 5 | 3 | 5 | 31 |
| API | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 |
| AQU | 4 | 12 | 17 | 6 | 10 | 4 | 9 | 7 | 15 | 17 | 16 | 14 | 9 | 9 | 9 | 8 | 4 | 5 | 15 | 10 | 3 | 5 | 4 | 12 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 6 | 3 | 3 | 6 | 3 | 7 | 6 | 13 | 18 | 4 | 6 | 8 | 2 | 6 | 9 | 8 | 6 | 2 | 3 | 2 | 2 | 1 | 4 |
| ASP | 6 | 9 | 15 | 6 | 5 | 9 | 7 | 7 | 12 | 5 | 10 | 11 | 2 | 3 | 3 | 4 | 12 | 3 | 5 | 5 | 3 | 2 | 8 | 8 |
| BDV | 5 | 15 | 25 | 10 | 11 | 6 | 12 | 8 | 18 | 18 | 15 | 14 | 9 | 11 | 8 | 8 | 4 | 6 | 21 | 15 | 2 | 5 | 5 | 18 |
| BEL | 5 | 19 | 21 | 12 | 11 | 8 | 11 | 13 | 23 | 17 | 12 | 9 | 5 | 10 | 9 | 7 | 6 | 5 | 25 | 15 | 3 | 6 | 4 | 19 |
| BFE | 9 | 18 | 44 | 13 | 12 | 10 | 14 | 11 | 27 | 20 | 14 | 12 | 10 | 13 | 7 | 5 | 6 | 9 | 31 | 23 | 4 | 6 | 9 | 28 |
| BFO | ||||||||||||||||||||||||
| BLC | 19 | 90 | 145 | 83 | 69 | 29 | 27 | 31 | 59 | 60 | 53 | 43 | 35 | 36 | 43 | 60 | 97 | 36 | 35 | 68 | 48 | 54 | 67 | 53 |
| BMT | 0 | 2 | 4 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| BNG | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| BOU | 3 | 14 | 27 | 18 | 12 | 15 | 12 | 6 | 9 | 11 | 10 | 19 | 11 | 12 | 10 | 21 | 26 | 13 | 6 | 1 | 3 | 4 | 2 | 10 |
| BOX | 9 | 27 | 15 | 10 | 10 | 6 | 9 | 15 | 24 | 3 | 8 | 5 | 7 | 7 | 6 | 7 | 6 | 33 | 9 | 4 | 9 | 5 | 23 | |
| BRW | 33 | 159 | 98 | 126 | 120 | 123 | 79 | 71 | 72 | 154 | 99 | 217 | 36 | 69 | 60 | 63 | 101 | 74 | 33 | 35 | 66 | 58 | 31 | 38 |
| BSL | 6 | 9 | 14 | 14 | 7 | 6 | 5 | 8 | 8 | 10 | 5 | 16 | 13 | 11 | 24 | 19 | 20 | 5 | 5 | 5 | 4 | 3 | 2 | 12 |
| CBB | 32 | 119 | 88 | 33 | 49 | 36 | 35 | 27 | 30 | 36 | 66 | 43 | 41 | 53 | 38 | 54 | 66 | 40 | 53 | 66 | 84 | 70 | 63 | 45 |
| CLF | 7 | 14 | 33 | 6 | 11 | 6 | 11 | 6 | 17 | 21 | 15 | 16 | 16 | 9 | 11 | 9 | 5 | 10 | 19 | 15 | 3 | 5 | 7 | 20 |
| CMO | 11 | 56 | 57 | 41 | 45 | 171 | 37 | 57 | 84 | 147 | 182 | 102 | 17 | 29 | 18 | 21 | 34 | 19 | 33 | 21 | 17 | 22 | 12 | 11 |
| CNB | 5 | 13 | 13 | 8 | 7 | 2 | 14 | 16 | 8 | 15 | 19 | 23 | 6 | 5 | 6 | 7 | 18 | 7 | 4 | 5 | 5 | 7 | 7 | 6 |
| CSY | ||||||||||||||||||||||||
| CTA | 8 | 9 | 3 | 4 | 9 | 11 | 9 | 20 | 8 | 9 | 10 | 13 | 3 | 3 | 3 | 4 | 12 | 4 | 3 | 4 | 3 | 6 | 9 | 6 |
| CZT | 3 | 7 | 39 | 15 | 7 | 14 | 8 | 7 | 10 | 4 | 3 | 6 | 7 | 10 | 3 | 9 | 9 | 2 | 19 | 12 | 5 | 8 | 6 | 63 |
| DLR | 2 | 9 | 12 | 8 | 5 | 6 | 5 | 5 | 7 | 6 | 5 | 9 | 15 | 12 | 15 | 21 | 25 | 10 | 3 | 1 | 4 | 4 | 2 | 5 |
| DOU | 9 | 14 | 37 | 8 | 11 | 6 | 12 | 7 | 19 | 22 | 16 | 15 | 16 | 10 | 11 | 7 | 4 | 9 | 21 | 18 | 3 | 5 | 7 | 22 |
| DRV | 19 | 137 | 72 | 53 | 43 | 18 | 25 | 26 | 29 | 44 | 30 | 46 | 30 | 36 | 15 | 22 | 38 | 21 | 30 | 28 | 45 | 18 | 37 | 24 |
| EBR | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 2 | 0 | 1 | 1 | 1 |
| ESK | 12 | 13 | 56 | 10 | 9 | 7 | 12 | 7 | 25 | 22 | 17 | 19 | 15 | 12 | 12 | 11 | 6 | 10 | 27 | 18 | 5 | 7 | 11 | 28 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 13 | 11 | 7 | 11 | 13 | 12 | 11 | 18 | 25 | 17 | 16 | 11 | 8 | 7 | 11 | 15 | 4 | 3 | 6 | 6 | 7 | 4 | 4 |
| FCC | 13 | 21 | 185 | 171 | 123 | 70 | 28 | 41 | 105 | 83 | 31 | 15 | 21 | 33 | 24 | 22 | 45 | 15 | 11 | 26 | 14 | 15 | 30 | 53 |
| FRD | 4 | 9 | 24 | 22 | 7 | 6 | 9 | 11 | 8 | 12 | 6 | 10 | 8 | 19 | 24 | 18 | 8 | 2 | 2 | 7 | 3 | 4 | 5 | 23 |
| FRN | 2 | 5 | 14 | 11 | 7 | 4 | 5 | 2 | 6 | 5 | 6 | 11 | 7 | 16 | 10 | 13 | 26 | 18 | 17 | 3 | 4 | 5 | 4 | 4 |
| FUR | 6 | 14 | 27 | 8 | 11 | 4 | 10 | 6 | 18 | 19 | 17 | 15 | 10 | 9 | 10 | 7 | 4 | 7 | 20 | 15 | 3 | 5 | 6 | 18 |
| GCK | ||||||||||||||||||||||||
| GDH | 30 | 71 | 140 | 114 | 34 | 45 | 44 | 53 | 125 | 73 | 83 | 78 | 94 | 116 | 55 | 59 | 71 | 31 | 32 | 32 | 23 | 31 | 39 | 84 |
| GNA | 4 | 20 | 26 | 9 | 7 | 3 | 11 | 7 | 12 | 7 | 11 | 13 | 4 | 6 | 6 | 8 | 17 | 7 | 16 | 11 | 7 | 4 | 7 | 10 |
| GUA | 12 | 14 | 2 | 2 | 2 | 7 | 6 | 3 | 6 | 2 | 2 | 4 | 2 | 1 | 2 | 3 | 7 | 1 | 2 | 3 | 5 | 16 | 20 | 11 |
| GUI | 3 | 8 | 12 | 3 | 7 | 5 | 6 | 7 | 3 | 12 | 16 | 20 | 19 | 3 | 8 | 6 | 10 | 12 | 12 | 8 | 4 | 3 | 4 | 5 |
| GZH | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 1 | 1 | 1 |
| HAD | 10 | 10 | 40 | 9 | 9 | 7 | 9 | 5 | 17 | 21 | 17 | 18 | 15 | 7 | 10 | 7 | 5 | 9 | 20 | 15 | 5 | 5 | 7 | 20 |
| HBK | 3 | 6 | 9 | 8 | 10 | 16 | 15 | 7 | 6 | 5 | 7 | 3 | 10 | 4 | 5 | 3 | 6 | 2 | 5 | 6 | 3 | 3 | 2 | 20 |
| HER | 4 | 5 | 7 | 9 | 6 | 8 | 9 | 6 | 7 | 6 | 11 | 10 | 6 | 4 | 4 | 2 | 5 | 3 | 5 | 5 | 3 | 3 | 1 | 19 |
| HLP | 7 | 23 | 25 | 10 | 10 | 8 | 12 | 12 | 24 | 19 | 12 | 10 | 9 | 12 | 12 | 9 | 5 | 5 | 27 | 15 | 4 | 7 | 6 | 24 |
| HON | 6 | 11 | 5 | 3 | 3 | 9 | 1 | 1 | 3 | 8 | 7 | 2 | 5 | 6 | 3 | 6 | 9 | 8 | 4 | 10 | 14 | 11 | 3 | 2 |
| HRB | 4 | 16 | 21 | 9 | 11 | 7 | 10 | 9 | 21 | 17 | 15 | 12 | 7 | 12 | 8 | 8 | 5 | 5 | 21 | 13 | 3 | 5 | 4 | 17 |
| HRN | 67 | 120 | 173 | 171 | 221 | 138 | 96 | 97 | 92 | 94 | 43 | 40 | 33 | 65 | 24 | 77 | 58 | 16 | 90 | 79 | 47 | 75 | 30 | 102 |
| HUA | 1 | 2 | 9 | 7 | 5 | 4 | 8 | 4 | 5 | 2 | 8 | 6 | 5 | 6 | 7 | 8 | 13 | 5 | 3 | 3 | 3 | 2 | 7 | 13 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 32 | 72 | 180 | 241 | 96 | 47 | 30 | 39 | 166 | 61 | 60 | 32 | 58 | 72 | 55 | 78 | 119 | 33 | 36 | 45 | 41 | 37 | 27 | 158 |
| IRT | ||||||||||||||||||||||||
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 2 | 3 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 2 |
| KDU | 4 | 4 | 4 | 4 | 3 | 9 | 7 | 4 | 9 | 4 | 6 | 7 | 1 | 2 | 2 | 3 | 9 | 2 | 3 | 3 | 2 | 1 | 8 | 7 |
| KMH | ||||||||||||||||||||||||
| KNY | 0 | 2 | 3 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| KOU | 1 | 5 | 8 | 8 | 7 | 2 | 7 | 5 | 8 | 9 | 10 | 15 | 9 | 15 | 16 | 10 | 6 | 9 | 16 | 8 | 6 | 2 | 2 | 4 |
| LER | 18 | 11 | 74 | 21 | 12 | 4 | 13 | 10 | 30 | 19 | 14 | 13 | 13 | 8 | 9 | 7 | 5 | 9 | 31 | 24 | 3 | 8 | 13 | 28 |
| LRM | 9 | 16 | 21 | 7 | 5 | 3 | 13 | 5 | 6 | 12 | 8 | 9 | 6 | 7 | 3 | 4 | 11 | 4 | 7 | 7 | 4 | 3 | 5 | 9 |
| LVV | 4 | 16 | 17 | 9 | 9 | 8 | 8 | 13 | 20 | 16 | 10 | 8 | 5 | 11 | 8 | 7 | 6 | 6 | 22 | 12 | 4 | 7 | 4 | 17 |
| LYC | ||||||||||||||||||||||||
| LZH | 2 | 10 | 7 | 4 | 2 | 5 | 4 | 5 | 9 | 2 | 7 | 10 | 4 | 4 | 13 | 6 | ||||||||
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 8 | 6 | 3 | 6 | 5 | 7 | 6 | 5 | 13 | 19 | 11 | 11 | 8 | 8 | 7 | 7 | 8 | 7 | 7 | 3 | 4 | 4 | 3 |
| MCQ | 15 | 37 | 20 | 27 | 27 | 30 | 26 | 31 | 61 | 45 | 88 | 114 | 19 | 18 | 14 | 27 | 25 | 10 | 8 | 8 | 18 | 10 | 11 | 13 |
| MEA | 7 | 30 | 65 | 81 | 37 | 52 | 32 | 24 | 48 | 50 | 36 | 42 | 8 | 23 | 14 | 21 | 23 | 12 | 18 | 11 | 7 | 6 | 7 | 10 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 1 | 3 | 4 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 2 | 2 | 1 | 0 | 2 |
| NAQ | 38 | 18 | 311 | 192 | 138 | 86 | 30 | 42 | 35 | 43 | 22 | 30 | 19 | 30 | 20 | 22 | 28 | 6 | 12 | 14 | 12 | 14 | 48 | 144 |
| NCK | 4 | 15 | 20 | 8 | 10 | 6 | 10 | 8 | 18 | 16 | 13 | 12 | 7 | 11 | 8 | 8 | 5 | 5 | 19 | 12 | 3 | 5 | 4 | 16 |
| NEW | 7 | 11 | 25 | 25 | 19 | 14 | 9 | 8 | 12 | 12 | 16 | 24 | 9 | 14 | 10 | 13 | 20 | 13 | 14 | 4 | 4 | 2 | 4 | 7 |
| NGK | 7 | 17 | 34 | 12 | 11 | 7 | 12 | 10 | 21 | 20 | 15 | 14 | 11 | 12 | 10 | 6 | 5 | 7 | 25 | 20 | 3 | 5 | 7 | 23 |
| NUR | 11 | 29 | 22 | 18 | 9 | 11 | 12 | 15 | 29 | 16 | 10 | 9 | 5 | 13 | 8 | 5 | 5 | 3 | 37 | 21 | 4 | 11 | 6 | 26 |
| NVS | 7 | 14 | 35 | 13 | 8 | 19 | 10 | 10 | 7 | 13 | 16 | 14 | 7 | 5 | 6 | 10 | 19 | 12 | 11 | 21 | 4 | 6 | 7 | 8 |
| OTT | 7 | 11 | 59 | 40 | 13 | 14 | 22 | 15 | 12 | 19 | 10 | 10 | 9 | 23 | 26 | 25 | 16 | 6 | 6 | 8 | 4 | 6 | 6 | 44 |
| PAF | 16 | 17 | 69 | 34 | 8 | 5 | 8 | 7 | 13 | 12 | 10 | 13 | 9 | 12 | 5 | 11 | 18 | 7 | 34 | 20 | 10 | 10 | 12 | 72 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 6 | 9 | 14 | 15 | 12 | 3 | 4 | 3 | 10 | 9 | 3 | 3 | 1 | 5 | 3 | 3 | 9 | 2 | 4 | 6 | 3 | 4 | 11 | 7 |
| PPT | 11 | 3 | 11 | 6 | 6 | 2 | 2 | 1 | 4 | 7 | 7 | 3 | 5 | 6 | 2 | 2 | 5 | 13 | 15 | 9 | 3 | 4 | 15 | 8 |
| PST | ||||||||||||||||||||||||
| QSB | 3 | 12 | 6 | 4 | 10 | 4 | 3 | 13 | 18 | 18 | 8 | 5 | 5 | 9 | 4 | 4 | 6 | 5 | 11 | 2 | 3 | 4 | 2 | 7 |
| RES | 15 | 173 | 103 | 73 | 36 | 33 | 28 | 24 | 38 | 36 | 58 | 28 | 30 | 26 | 31 | 70 | 175 | 86 | 31 | 62 | 67 | 21 | 29 | 95 |
| SBA | 33 | 86 | 38 | 62 | 32 | 10 | 15 | 18 | 27 | 51 | 24 | 37 | 64 | 67 | 54 | 55 | 19 | 11 | 19 | 38 | 35 | 18 | 19 | 73 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 5 | 15 | 19 | 25 | 34 | 37 | 17 | 31 | 44 | 29 | 11 | 29 | 5 | 19 | 16 | 13 | 11 | 13 | 28 | 15 | 7 | 10 | 5 | 6 |
| SJG | 1 | 5 | 8 | 11 | 5 | 2 | 6 | 5 | 6 | 5 | 14 | 5 | 4 | 18 | 18 | 15 | 8 | 3 | 8 | 5 | 3 | 2 | 5 | 5 |
| SOD | 19 | 67 | 116 | 91 | 27 | 21 | 18 | 21 | 42 | 16 | 10 | 13 | 9 | 17 | 11 | 8 | 9 | 8 | 51 | 36 | 20 | 18 | 16 | 54 |
| SPT | 6 | 9 | 20 | 3 | 7 | 4 | 7 | 5 | 8 | 18 | 14 | 16 | 17 | 6 | 8 | 6 | 7 | 9 | 11 | 10 | 3 | 3 | 5 | 9 |
| STJ | 10 | 8 | 35 | 26 | 12 | 22 | 8 | 9 | 20 | 11 | 12 | 11 | 5 | 19 | 14 | 20 | 12 | 5 | 14 | 5 | 5 | 7 | 5 | 33 |
| SUA | 6 | 13 | 13 | 6 | 11 | 8 | 6 | 13 | 18 | 17 | 12 | 4 | 3 | 8 | 7 | 6 | 6 | 4 | 18 | 8 | 2 | 4 | 3 | 12 |
| TAM | 3 | 11 | 10 | 5 | 6 | 5 | 12 | 4 | 17 | 20 | 14 | 8 | 6 | 5 | 11 | 8 | 5 | 4 | 7 | 6 | 2 | 5 | 3 | 5 |
| TAN | 1 | 5 | 14 | 5 | 10 | 19 | 10 | 12 | 12 | 5 | 4 | 7 | 4 | 8 | 5 | 4 | 5 | 1 | 4 | 4 | 2 | 2 | 2 | 18 |
| TDC | ||||||||||||||||||||||||
| THL | 21 | 129 | 80 | 82 | 43 | 25 | 28 | 18 | 41 | 47 | 24 | 37 | 76 | 117 | 78 | 122 | 58 | 32 | 21 | 33 | 34 | 35 | 46 | 103 |
| THY | 4 | 15 | 20 | 9 | 11 | 7 | 10 | 9 | 19 | 17 | 14 | 13 | 8 | 12 | 9 | 8 | 5 | 5 | 20 | 12 | 3 | 5 | 4 | 17 |
| TRW | ||||||||||||||||||||||||
| TSU | 4 | 5 | 6 | 6 | 9 | 5 | 12 | 12 | 9 | 4 | 6 | 3 | 7 | 10 | 3 | 3 | 7 | 2 | 4 | 4 | 2 | 2 | 2 | 9 |
| TUC | 3 | 9 | 14 | 10 | 7 | 6 | 6 | 3 | 7 | 6 | 6 | 9 | 10 | 17 | 7 | 18 | 28 | 18 | 9 | 3 | 4 | 8 | 2 | 5 |
| UPS | 7 | 24 | 36 | 15 | 9 | 11 | 12 | 13 | 29 | 16 | 11 | 10 | 9 | 14 | 8 | 5 | 4 | 4 | 33 | 22 | 4 | 8 | 8 | 23 |
| VAL | 11 | 8 | 43 | 15 | 8 | 7 | 9 | 4 | 18 | 16 | 17 | 15 | 17 | 4 | 9 | 7 | 4 | 8 | 22 | 15 | 4 | 5 | 8 | 19 |
| VIC | 4 | 7 | 19 | 20 | 18 | 10 | 6 | 8 | 12 | 9 | 14 | 21 | 8 | 14 | 13 | 10 | 17 | 14 | 16 | 8 | 4 | 4 | 3 | 4 |
| VSS | 1 | 2 | 10 | 7 | 7 | 4 | 11 | 6 | 6 | 8 | 15 | 17 | 6 | 5 | 6 | 5 | 6 | 7 | 10 | 3 | 2 | 3 | 2 | 13 |
| WNG | 8 | 17 | 41 | 11 | 12 | 8 | 12 | 9 | 22 | 20 | 15 | 15 | 12 | 12 | 10 | 8 | 5 | 8 | 27 | 20 | 3 | 5 | 9 | 26 |
| YKC | 12 | 30 | 86 | 95 | 163 | 98 | 43 | 24 | 70 | 130 | 75 | 59 | 26 | 35 | 21 | 38 | 53 | 12 | 33 | 19 | 15 | 17 | 20 | 64 |
- Date modified: