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 | 3 | 3 | 6 | 11 | 41 | 50 | 26 | 22 | 38 | 25 | 18 | 12 | 10 | 7 | 3 | 6 | 6 | 3 | 4 | 4 | 16 | 13 | 4 |
| ABG | 6 | 8 | 11 | 20 | 11 | 9 | 7 | 20 | 8 | 10 | 10 | 14 | 11 | 9 | 8 | 15 | 10 | 9 | 8 | 4 | 6 | 14 | 13 | 7 |
| ABK | 104 | 10 | 21 | 15 | 16 | 25 | 43 | 37 | 34 | 14 | 19 | 27 | 82 | 28 | 63 | 35 | 55 | 32 | 55 | 84 | 93 | 257 | 151 | 75 |
| AIA | 9 | 3 | 6 | 9 | 11 | 20 | 5 | 12 | 18 | 12 | 2 | 6 | 12 | 10 | 8 | 17 | 9 | 6 | 5 | 16 | 5 | 17 | 13 | 8 |
| AMS | 5 | 7 | 10 | 3 | 13 | 23 | 4 | 16 | 8 | 5 | 4 | 2 | 6 | 4 | 10 | 27 | 11 | 7 | 14 | 11 | 3 | 10 | 7 | 2 |
| API | 5 | 5 | 8 | 9 | 20 | 12 | 4 | 10 | 13 | 3 | 3 | 3 | 11 | 8 | 3 | 5 | 10 | 2 | 3 | 14 | 10 | 10 | 10 | 7 |
| AQU | 6 | 3 | 2 | 3 | 4 | 7 | 3 | 16 | 10 | 10 | 15 | 8 | 12 | 16 | 8 | 5 | 8 | 4 | 6 | 7 | 5 | 15 | 14 | 6 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 1 | 2 | 1 | 5 | 5 | 3 | 6 | 10 | 2 | 6 | 11 | 4 | 13 | 12 | 12 | 3 | 5 | 7 | 8 | 3 | 2 | 5 | 2 |
| ASP | 11 | 2 | 7 | 13 | 19 | 16 | 7 | 15 | 16 | 3 | 2 | 9 | 18 | 12 | 14 | 15 | 11 | 8 | 7 | 5 | 3 | 2 | 6 | 9 |
| BDV | 7 | 4 | 2 | 4 | 4 | 7 | 6 | 16 | 8 | 3 | 3 | 4 | 5 | 6 | 6 | 3 | 14 | 5 | 7 | 7 | 5 | 16 | 17 | 7 |
| BEL | 9 | 3 | 5 | 4 | 6 | 6 | 7 | 19 | 13 | 8 | 6 | 7 | 8 | 8 | 9 | 8 | 13 | 7 | 10 | 6 | 7 | 20 | 22 | 10 |
| BFE | 12 | 5 | 4 | 5 | 6 | 9 | 7 | 24 | 8 | 11 | 10 | 10 | 16 | 7 | 13 | 7 | 19 | 13 | 12 | 10 | 7 | 23 | 23 | 12 |
| BFO | ||||||||||||||||||||||||
| BLC | 56 | 21 | 21 | 20 | 43 | 113 | 26 | 53 | 140 | 30 | 16 | 30 | 74 | 140 | 39 | 46 | 79 | 93 | 48 | 87 | 87 | 146 | 74 | 72 |
| BMT | 6 | 7 | 6 | 8 | 4 | 8 | 14 | 24 | 8 | 7 | 4 | 4 | 9 | 9 | 16 | 20 | 11 | 11 | 9 | 9 | 2 | 8 | 3 | 4 |
| BNG | 2 | 2 | 2 | 2 | 4 | 9 | 17 | 10 | 23 | 5 | 9 | 11 | 18 | 21 | 7 | 4 | 6 | 6 | 6 | 7 | 3 | 11 | 11 | 3 |
| BOU | 8 | 6 | 5 | 10 | 10 | 12 | 12 | 33 | 25 | 5 | 7 | 5 | 8 | 7 | 17 | 22 | 7 | 11 | 4 | 16 | 5 | 10 | 12 | 9 |
| BOX | 8 | 4 | 6 | 4 | 13 | 9 | 6 | 27 | 13 | 6 | 8 | 11 | 20 | 16 | 16 | 18 | 14 | 11 | 19 | 9 | 7 | 29 | 24 | 10 |
| BRW | 35 | 42 | 88 | 87 | 74 | 87 | 138 | 205 | 572 | 136 | 34 | 36 | 283 | 137 | 123 | 113 | 136 | 91 | 116 | 109 | 77 | 72 | 52 | 43 |
| BSL | 8 | 3 | 3 | 9 | 7 | 10 | 10 | 20 | 14 | 6 | 5 | 3 | 13 | 7 | 7 | 5 | 10 | 4 | 13 | 12 | 4 | 12 | 7 | 6 |
| CBB | 48 | 25 | 24 | 31 | 20 | 56 | 21 | 47 | 47 | 18 | 10 | 32 | 20 | 75 | 45 | 86 | 99 | 109 | 205 | 120 | 71 | 104 | 78 | 80 |
| CLF | 8 | 4 | 2 | 4 | 5 | 9 | 3 | 13 | 7 | 4 | 4 | 3 | 5 | 5 | 5 | 3 | 13 | 6 | 8 | 10 | 6 | 13 | 14 | 6 |
| CMO | 19 | 25 | 41 | 47 | 32 | 116 | 82 | 281 | 271 | 130 | 80 | 159 | 331 | 189 | 267 | 75 | 73 | 75 | 27 | 35 | 33 | 36 | 26 | 22 |
| CNB | 11 | 7 | 7 | 9 | 16 | 10 | 10 | 18 | 17 | 4 | 2 | 9 | 27 | 13 | 14 | 11 | 12 | 7 | 2 | 4 | 8 | 12 | 8 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 6 | 2 | 9 | 13 | 19 | 14 | 8 | 13 | 10 | 3 | 2 | 8 | 20 | 13 | 13 | 13 | 11 | 7 | 4 | 3 | 4 | 4 | 3 | 3 |
| CZT | 2 | 3 | 2 | 2 | 4 | 6 | 8 | 27 | 5 | 2 | 2 | 3 | 4 | 5 | 12 | 5 | 10 | 7 | 13 | 7 | 11 | 26 | 18 | 8 |
| DLR | 10 | 5 | 3 | 9 | 8 | 11 | 10 | 27 | 19 | 6 | 5 | 4 | 7 | 12 | 7 | 3 | 8 | 3 | 12 | 14 | 4 | 10 | 7 | 5 |
| DOU | 9 | 4 | 4 | 5 | 5 | 10 | 5 | 14 | 8 | 6 | 9 | 4 | 6 | 6 | 7 | 5 | 19 | 7 | 10 | 12 | 6 | 14 | 16 | 6 |
| DRV | 120 | 65 | 86 | 73 | 30 | 69 | 40 | 46 | 33 | 27 | 15 | 15 | 57 | 22 | 17 | 14 | 27 | 20 | 29 | 39 | 36 | 21 | 42 | 18 |
| EBR | 6 | 3 | 2 | 4 | 5 | 20 | 4 | 19 | 15 | 8 | 12 | 12 | 5 | 13 | 16 | 12 | 15 | 12 | 8 | 17 | 8 | 12 | 13 | 5 |
| ESK | 10 | 5 | 5 | 6 | 8 | 13 | 7 | 19 | 11 | 11 | 14 | 6 | 12 | 12 | 15 | 9 | 30 | 12 | 14 | 14 | 7 | 19 | 21 | 7 |
| EUA | ||||||||||||||||||||||||
| EYR | 8 | 8 | 8 | 7 | 14 | 12 | 8 | 19 | 15 | 11 | 5 | 7 | 30 | 16 | 5 | 3 | 13 | 5 | 8 | 4 | 14 | 14 | 6 | 9 |
| FCC | 64 | 14 | 35 | 18 | 291 | 237 | 107 | 199 | 188 | 70 | 47 | 146 | 92 | 93 | 201 | 33 | 52 | 17 | 37 | 60 | 46 | 78 | 49 | 66 |
| FRD | 7 | 3 | 4 | 9 | 6 | 13 | 8 | 5 | 10 | 7 | 5 | 5 | 15 | 5 | 8 | 7 | 6 | 4 | 5 | 17 | 8 | 15 | 10 | 8 |
| FRN | 6 | 5 | 4 | 8 | 6 | 9 | 12 | 42 | 33 | 5 | 7 | 5 | 8 | 7 | 10 | 19 | 9 | 4 | 6 | 14 | 4 | 8 | 7 | 7 |
| FUR | 7 | 4 | 2 | 4 | 4 | 8 | 5 | 15 | 7 | 3 | 2 | 4 | 5 | 7 | 5 | 3 | 12 | 5 | 7 | 8 | 5 | 15 | 16 | 7 |
| GCK | ||||||||||||||||||||||||
| GDH | 25 | 14 | 18 | 17 | 22 | 25 | 16 | 33 | 55 | 37 | 46 | 50 | 54 | 47 | 178 | 34 | 84 | 69 | 65 | 24 | 27 | 31 | 51 | 28 |
| GNA | 6 | 9 | 3 | 3 | 17 | 17 | 6 | 12 | 16 | 3 | 2 | 7 | 11 | 11 | 14 | 15 | 9 | 8 | 10 | 7 | 2 | 4 | 5 | 5 |
| GUA | 15 | 3 | 8 | 14 | 21 | 16 | 4 | 11 | 3 | 1 | 1 | 6 | 13 | 10 | 9 | 11 | 9 | 7 | 4 | 2 | 5 | 13 | 21 | 21 |
| GUI | 3 | 2 | 2 | 3 | 6 | 8 | 4 | 3 | 17 | 10 | 14 | 10 | 8 | 13 | 10 | 12 | 7 | 11 | 14 | 8 | 5 | 5 | 7 | 3 |
| GZH | 5 | 7 | 11 | 8 | 9 | 12 | 4 | 16 | 6 | 3 | 4 | 5 | 7 | 8 | 11 | 16 | 7 | 9 | 7 | 5 | 1 | 8 | 3 | 4 |
| HAD | 8 | 4 | 2 | 5 | 6 | 11 | 4 | 14 | 9 | 9 | 12 | 6 | 6 | 9 | 10 | 7 | 19 | 6 | 10 | 11 | 6 | 15 | 16 | 5 |
| HBK | 2 | 2 | 3 | 2 | 3 | 4 | 5 | 16 | 5 | 4 | 3 | 11 | 13 | 8 | 11 | 6 | 6 | 6 | 5 | 7 | 5 | 15 | 10 | 4 |
| HER | 2 | 1 | 3 | 2 | 4 | 3 | 9 | 14 | 4 | 9 | 18 | 9 | 7 | 3 | 13 | 7 | 5 | 5 | 5 | 8 | 4 | 13 | 8 | 3 |
| HLP | 10 | 5 | 4 | 4 | 8 | 6 | 7 | 21 | 9 | 10 | 7 | 9 | 13 | 10 | 11 | 12 | 15 | 8 | 13 | 10 | 7 | 17 | 18 | 11 |
| HON | 3 | 1 | 6 | 6 | 7 | 9 | 5 | 14 | 16 | 3 | 4 | 1 | 9 | 5 | 5 | 1 | 13 | 6 | 8 | 9 | 7 | 4 | 5 | 3 |
| HRB | 7 | 4 | 3 | 4 | 5 | 6 | 7 | 15 | 12 | 4 | 3 | 4 | 8 | 8 | 6 | 4 | 11 | 5 | 7 | 6 | 6 | 17 | 18 | 8 |
| HRN | 25 | 28 | 57 | 32 | 33 | 77 | 80 | 93 | 88 | 51 | 76 | 61 | 56 | 35 | 60 | 115 | 133 | 29 | 39 | 38 | 38 | 69 | 48 | 48 |
| HUA | 2 | 1 | 5 | 6 | 7 | 8 | 7 | 13 | 5 | 6 | 3 | 15 | 31 | 13 | 25 | 16 | 21 | 49 | 34 | 25 | 10 | 13 | 10 | 6 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 69 | 11 | 19 | 12 | 42 | 75 | 58 | 47 | 141 | 87 | 67 | 110 | 49 | 25 | 153 | 46 | 80 | 31 | 74 | 51 | 64 | 88 | 42 | 33 |
| IRT | 7 | 12 | 7 | 5 | 6 | 6 | 23 | 21 | 15 | 4 | 3 | 5 | 5 | 6 | 13 | 20 | 13 | 9 | 10 | 11 | 3 | 2 | 2 | 1 |
| IZN | ||||||||||||||||||||||||
| KAK | 5 | 4 | 11 | 9 | 2 | 7 | 5 | 17 | 6 | 2 | 2 | 3 | 13 | 10 | 10 | 12 | 8 | 10 | 6 | 3 | 2 | 2 | 7 | 12 |
| KDU | 9 | 5 | 4 | 11 | 20 | 12 | 5 | 19 | 10 | 3 | 1 | 7 | 14 | 12 | 13 | 15 | 10 | 7 | 6 | 4 | 2 | 5 | 5 | 6 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 2 | 9 | 7 | 5 | 6 | 7 | 20 | 5 | 1 | 1 | 4 | 12 | 10 | 12 | 15 | 8 | 10 | 7 | 4 | 3 | 3 | 7 | 5 |
| KOU | 3 | 1 | 3 | 4 | 5 | 6 | 4 | 5 | 8 | 5 | 8 | 14 | 9 | 5 | 2 | 8 | 6 | 12 | 20 | 3 | 4 | 9 | 4 | 3 |
| LER | 9 | 6 | 6 | 4 | 8 | 10 | 6 | 23 | 9 | 10 | 10 | 4 | 15 | 12 | 14 | 11 | 36 | 11 | 11 | 10 | 5 | 19 | 19 | 7 |
| LRM | 13 | 8 | 6 | 11 | 13 | 14 | 5 | 14 | 14 | 3 | 2 | 7 | 13 | 10 | 14 | 18 | 10 | 8 | 10 | 7 | 2 | 6 | 4 | 4 |
| LVV | 9 | 5 | 7 | 5 | 9 | 6 | 8 | 16 | 13 | 7 | 4 | 5 | 7 | 10 | 6 | 7 | 15 | 6 | 10 | 7 | 9 | 19 | 19 | 11 |
| LYC | ||||||||||||||||||||||||
| LZH | 3 | 4 | 3 | 5 | 4 | 8 | 13 | 22 | 7 | 5 | 6 | 5 | 6 | 8 | 14 | 20 | 9 | 10 | 8 | 9 | 2 | 10 | 4 | 4 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 1 | 3 | 2 | 6 | 6 | 5 | 6 | 34 | 19 | 16 | 6 | 12 | 26 | 24 | 20 | 4 | 4 | 12 | 6 | 3 | 4 | 7 | 3 |
| MCQ | 8 | 11 | 22 | 28 | 23 | 46 | 16 | 105 | 109 | 71 | 52 | 81 | 301 | 111 | 203 | 43 | 61 | 44 | 36 | 35 | 16 | 18 | 9 | 11 |
| MEA | 20 | 10 | 15 | 15 | 22 | 65 | 28 | 138 | 90 | 23 | 16 | 24 | 64 | 78 | 30 | 25 | 24 | 16 | 19 | 24 | 20 | 23 | 31 | 25 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 7 | 4 | 11 | 11 | 5 | 8 | 8 | 26 | 13 | 2 | 2 | 4 | 17 | 10 | 14 | 13 | 9 | 12 | 8 | 4 | 3 | 4 | 7 | 11 |
| NAQ | 48 | 14 | 29 | 61 | 182 | 89 | 170 | 92 | 118 | 33 | 20 | 18 | 19 | 12 | 23 | 40 | 101 | 39 | 55 | 35 | 34 | 56 | 55 | 80 |
| NCK | 7 | 3 | 2 | 4 | 4 | 6 | 6 | 13 | 10 | 4 | 4 | 4 | 8 | 7 | 5 | 3 | 11 | 4 | 7 | 7 | 6 | 15 | 16 | 7 |
| NEW | 12 | 7 | 9 | 12 | 10 | 16 | 18 | 50 | 37 | 6 | 6 | 8 | 15 | 9 | 9 | 28 | 22 | 7 | 15 | 21 | 7 | 13 | 19 | 15 |
| NGK | 10 | 4 | 3 | 4 | 6 | 9 | 7 | 18 | 9 | 8 | 10 | 6 | 9 | 8 | 8 | 7 | 17 | 8 | 10 | 9 | 6 | 19 | 21 | 10 |
| NUR | 9 | 5 | 5 | 3 | 9 | 6 | 7 | 29 | 8 | 8 | 7 | 12 | 28 | 14 | 17 | 12 | 15 | 13 | 14 | 7 | 7 | 23 | 22 | 11 |
| NVS | 9 | 5 | 9 | 16 | 13 | 6 | 15 | 18 | 24 | 5 | 4 | 7 | 5 | 10 | 11 | 24 | 7 | 8 | 11 | 14 | 4 | 7 | 7 | 5 |
| OTT | 7 | 4 | 5 | 10 | 11 | 16 | 9 | 20 | 24 | 4 | 2 | 5 | 14 | 6 | 10 | 7 | 12 | 13 | 9 | 25 | 11 | 18 | 16 | 10 |
| PAF | 14 | 5 | 7 | 4 | 12 | 21 | 15 | 20 | 6 | 5 | 14 | 7 | 6 | 5 | 14 | 28 | 30 | 9 | 27 | 23 | 11 | 28 | 24 | 4 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 3 | 11 | 18 | 9 | 11 | 14 | 4 | 20 | 9 | 5 | 5 | 6 | 9 | 10 | 14 | 20 | 9 | 12 | 9 | 7 | 2 | 10 | 4 | 5 |
| PPT | 6 | 2 | 6 | 7 | 10 | 10 | 4 | 19 | 18 | 2 | 4 | 2 | 8 | 3 | 4 | 1 | 14 | 2 | 2 | 14 | 11 | 6 | 8 | 12 |
| PST | ||||||||||||||||||||||||
| QSB | 5 | 3 | 3 | 4 | 8 | 7 | 10 | 13 | 23 | 9 | 4 | 11 | 15 | 18 | 7 | 8 | 11 | 6 | 6 | 5 | 7 | 20 | 21 | 7 |
| RES | 69 | 22 | 20 | 29 | 31 | 28 | 35 | 35 | 24 | 31 | 27 | 10 | 39 | 34 | 40 | 22 | 43 | 30 | 55 | 86 | 59 | 39 | 18 | 48 |
| SBA | 15 | 26 | 47 | 40 | 50 | 35 | 36 | 29 | 34 | 31 | 13 | 25 | 63 | 55 | 52 | 25 | 66 | 47 | 43 | 39 | 24 | 13 | 43 | 29 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 15 | 13 | 17 | 15 | 13 | 14 | 15 | 49 | 74 | 14 | 11 | 21 | 70 | 44 | 32 | 18 | 24 | 5 | 6 | 13 | 8 | 17 | 14 | 18 |
| SJG | 3 | 2 | 2 | 5 | 5 | 5 | 4 | 8 | 5 | 7 | 2 | 5 | 3 | 8 | 2 | 3 | 11 | 5 | 19 | 5 | 4 | 7 | 3 | 3 |
| SOD | 44 | 9 | 14 | 11 | 12 | 17 | 26 | 35 | 23 | 9 | 20 | 24 | 65 | 23 | 53 | 28 | 38 | 14 | 48 | 52 | 46 | 236 | 97 | 45 |
| SPT | 6 | 3 | 2 | 3 | 5 | 9 | 3 | 9 | 8 | 8 | 8 | 13 | 3 | 11 | 7 | 8 | 4 | 5 | 8 | 10 | 5 | 10 | 12 | 4 |
| STJ | 9 | 2 | 3 | 8 | 12 | 12 | 6 | 19 | 35 | 9 | 9 | 13 | 18 | 6 | 15 | 7 | 23 | 14 | 13 | 18 | 9 | 13 | 11 | 5 |
| SUA | ||||||||||||||||||||||||
| TAM | 4 | 2 | 2 | 3 | 5 | 7 | 8 | 6 | 32 | 10 | 3 | 5 | 17 | 21 | 15 | 13 | 5 | 2 | 7 | 8 | 4 | 9 | 11 | 4 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 25 | 15 | 23 | 14 | 14 | 19 | 28 | 37 | 23 | 24 | 15 | 42 | 57 | 13 | 31 | 32 | 76 | 55 | 53 | 35 | 36 | 28 | 31 | 38 |
| THY | 7 | 4 | 3 | 4 | 5 | 7 | 6 | 15 | 12 | 6 | 6 | 6 | 11 | 9 | 6 | 4 | 13 | 5 | 8 | 7 | 6 | 17 | 18 | 8 |
| TRW | 5 | 3 | 4 | 5 | 6 | 9 | 4 | 7 | 7 | 10 | 4 | 2 | 15 | 8 | 4 | 5 | 13 | 9 | 11 | 12 | 5 | 12 | 6 | 4 |
| TSU | 2 | 2 | 3 | 2 | 4 | 8 | 6 | 16 | 8 | 4 | 3 | 5 | 12 | 13 | 4 | 4 | 10 | 7 | 6 | 10 | 4 | 11 | 10 | 3 |
| TUC | 9 | 6 | 4 | 8 | 8 | 10 | 11 | 34 | 27 | 5 | 6 | 4 | 7 | 7 | 15 | 12 | 6 | 1 | 8 | 13 | 5 | 8 | 9 | 5 |
| UPS | 9 | 4 | 5 | 4 | 6 | 5 | 6 | 26 | 6 | 8 | 6 | 10 | 22 | 10 | 14 | 4 | 26 | 11 | 11 | 7 | 6 | 15 | 19 | 10 |
| VAL | 8 | 5 | 3 | 4 | 5 | 10 | 4 | 13 | 8 | 7 | 13 | 8 | 6 | 10 | 10 | 7 | 20 | 5 | 10 | 9 | 5 | 9 | 13 | 4 |
| VIC | 11 | 8 | 9 | 10 | 9 | 11 | 16 | 52 | 49 | 5 | 6 | 7 | 14 | 8 | 8 | 24 | 20 | 4 | 10 | 17 | 5 | 11 | 14 | 13 |
| VSS | 4 | 2 | 3 | 3 | 4 | 6 | 4 | 2 | 10 | 4 | 5 | 10 | 6 | 7 | 4 | 14 | 3 | 19 | 20 | 4 | 3 | 4 | 5 | 4 |
| WNG | 12 | 4 | 4 | 5 | 7 | 9 | 7 | 20 | 9 | 10 | 12 | 6 | 13 | 8 | 11 | 7 | 19 | 10 | 12 | 10 | 7 | 20 | 23 | 12 |
| YKC | 39 | 25 | 45 | 29 | 133 | 255 | 92 | 817 | 627 | 110 | 43 | 96 | 162 | 221 | 232 | 149 | 48 | 40 | 37 | 65 | 61 | 37 | 52 | 37 |
- Date modified: