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 | 6 | 5 | 5 | 4 | 34 | 36 | 19 | 18 | 23 | 22 | 13 | 14 | 14 | 19 | 8 | 8 | 4 | 4 | 5 | 6 | 4 | 5 | 11 | |
| ABG | 18 | 11 | 14 | 12 | 8 | 12 | 13 | 5 | 18 | 24 | 11 | 18 | 8 | 8 | 20 | 14 | 7 | 5 | 9 | 9 | 11 | 7 | 6 | 11 |
| ABK | 191 | 101 | 78 | 75 | 22 | 48 | 17 | 29 | 22 | 27 | 47 | 35 | 65 | 24 | 78 | 45 | 30 | 30 | 103 | 37 | 76 | 54 | 103 | 112 |
| AIA | 9 | 32 | 26 | 10 | 5 | 11 | 9 | 4 | 5 | 9 | 12 | 18 | 6 | 8 | 15 | 8 | 5 | 4 | 8 | 5 | 6 | 9 | 13 | 14 |
| AMS | 11 | 3 | 6 | 8 | 5 | 4 | 6 | 6 | 11 | 12 | 14 | 6 | 10 | 5 | 13 | 9 | 8 | 4 | 8 | 7 | 10 | 3 | 3 | 5 |
| API | 3 | 7 | 8 | 8 | 11 | 14 | 2 | 3 | 7 | 8 | 11 | 13 | 3 | 3 | 12 | 4 | 3 | 3 | 4 | 7 | 6 | 7 | 5 | 4 |
| AQU | 8 | 8 | 6 | 4 | 5 | 5 | 6 | 3 | 10 | 6 | 18 | 7 | 7 | 8 | 20 | 9 | 9 | 4 | 3 | 9 | 6 | 5 | 3 | 15 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 11 | 2 | 3 | 4 | 10 | 4 | 5 | 7 | 7 | 6 | 3 | 4 | 1 | 8 | 4 | 15 | 8 | 8 | 4 | 6 | 5 | 7 | 13 |
| ASP | 4 | 6 | 9 | 7 | 20 | 10 | 5 | 2 | 11 | 13 | 3 | 27 | 13 | 5 | 15 | 10 | 8 | 3 | 6 | 6 | 4 | 9 | 5 | 6 |
| BDV | 7 | 8 | 8 | 5 | 6 | 6 | 6 | 7 | 12 | 10 | 18 | 10 | 8 | 6 | 18 | 17 | 6 | 4 | 7 | 10 | 6 | 4 | 4 | 16 |
| BEL | 9 | 11 | 11 | 8 | 7 | 5 | 7 | 11 | 13 | 15 | 21 | 11 | 15 | 6 | 19 | 17 | 7 | 5 | 11 | 11 | 9 | 6 | 7 | 16 |
| BFE | 8 | 17 | 13 | 10 | 7 | 6 | 7 | 9 | 17 | 22 | 19 | 17 | 20 | 8 | 24 | 24 | 5 | 7 | 18 | 14 | 11 | 7 | 10 | 18 |
| BFO | ||||||||||||||||||||||||
| BLC | 40 | 55 | 283 | 215 | 48 | 157 | 78 | 7 | 17 | 104 | 211 | 79 | 61 | 116 | 94 | 113 | 34 | 75 | 84 | 51 | 38 | 71 | 114 | 108 |
| BMT | 7 | 3 | 8 | 12 | 5 | 20 | 17 | 4 | 20 | 27 | 5 | 23 | 13 | 3 | 9 | 6 | 5 | 4 | 7 | 5 | 4 | 3 | 11 | 8 |
| BNG | 5 | 6 | 3 | 3 | 3 | 8 | 10 | 13 | 4 | 10 | 3 | 10 | 7 | 8 | 15 | 5 | 9 | 3 | 6 | 6 | 7 | 4 | 6 | 14 |
| BOU | 9 | 15 | 13 | 12 | 4 | 17 | 8 | 5 | 10 | 13 | 14 | 9 | 7 | 7 | 6 | 5 | 5 | 4 | 15 | 6 | 9 | 12 | 7 | 10 |
| BOX | 8 | 17 | 7 | 15 | 9 | 7 | 7 | 15 | 18 | 23 | 29 | 20 | 31 | 9 | 27 | 12 | 7 | 6 | 16 | 11 | 8 | 5 | 10 | 9 |
| BRW | 86 | 136 | 123 | 180 | 100 | 128 | 27 | 74 | 44 | 326 | 423 | 169 | 155 | 180 | 526 | 287 | 362 | 519 | 298 | 195 | 166 | 57 | 30 | 62 |
| BSL | 4 | 15 | 11 | 7 | 7 | 18 | 6 | 5 | 6 | 14 | 5 | 8 | 6 | 8 | 8 | 4 | 6 | 5 | 11 | 10 | 8 | 9 | 5 | 8 |
| CBB | 42 | 49 | 29 | 41 | 27 | 75 | 34 | 12 | 42 | 62 | 90 | 68 | 37 | 52 | 99 | 198 | 170 | 128 | 270 | 53 | 53 | 106 | 66 | 46 |
| CLF | 7 | 8 | 9 | 4 | 5 | 7 | 7 | 4 | 12 | 12 | 12 | 10 | 9 | 5 | 18 | 16 | 4 | 4 | 7 | 10 | 6 | 4 | 4 | 17 |
| CMO | 49 | 109 | 42 | 84 | 41 | 96 | 26 | 30 | 43 | 223 | 319 | 239 | 164 | 81 | 113 | 47 | 30 | 78 | 53 | 22 | 23 | 24 | 19 | 41 |
| CNB | 5 | 14 | 8 | 10 | 8 | 20 | 13 | 3 | 14 | 12 | 15 | 30 | 9 | 8 | 24 | 18 | 8 | 5 | 9 | 8 | 8 | 3 | 8 | 13 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 8 | 6 | 8 | 16 | 14 | 6 | 1 | 13 | 12 | 7 | 27 | 10 | 5 | 18 | 11 | 7 | 3 | 7 | 6 | 5 | 9 | 5 | 11 |
| CZT | 6 | 6 | 5 | 6 | 9 | 7 | 4 | 6 | 13 | 9 | 6 | 3 | 9 | 2 | 17 | 11 | 9 | 5 | 9 | 5 | 12 | 5 | 6 | 18 |
| DLR | ||||||||||||||||||||||||
| DOU | 7 | 10 | 10 | 5 | 7 | 8 | 8 | 6 | 14 | 13 | 15 | 9 | 13 | 6 | 21 | 20 | 5 | 6 | 7 | 12 | 7 | 5 | 5 | 18 |
| DRV | 20 | 53 | 45 | 36 | 26 | 77 | 44 | 14 | 23 | 38 | 21 | 89 | 42 | 16 | 96 | 70 | 43 | 28 | 44 | 44 | 44 | 35 | 36 | 32 |
| EBR | 7 | 9 | 8 | 3 | 14 | 16 | 8 | 11 | 17 | 8 | 15 | 19 | 13 | 9 | 28 | 17 | 8 | 9 | 8 | 15 | 9 | 6 | 4 | 17 |
| ESK | 6 | 18 | 18 | 8 | 8 | 10 | 7 | 4 | 20 | 21 | 14 | 12 | 23 | 9 | 25 | 34 | 9 | 11 | 16 | 16 | 11 | 7 | 11 | 21 |
| EUA | ||||||||||||||||||||||||
| EYR | 8 | 10 | 18 | 10 | 7 | 26 | 5 | 5 | 10 | 27 | 31 | 19 | 6 | 9 | 22 | 14 | 7 | 5 | 7 | 7 | 12 | 8 | 14 | 13 |
| FCC | 91 | 102 | 156 | 115 | 110 | 182 | 51 | 38 | 219 | 318 | 131 | 150 | 66 | 32 | 23 | 28 | 29 | 25 | 29 | 89 | 57 | 46 | 88 | 45 |
| FRD | 4 | 26 | 19 | 7 | 10 | 18 | 5 | 4 | 4 | 15 | 10 | 17 | 5 | 10 | 8 | 6 | 6 | 6 | 12 | 11 | 13 | 12 | 6 | 11 |
| FRN | 5 | 11 | 11 | 9 | 6 | 18 | 7 | 4 | 9 | 6 | 20 | 7 | 7 | 3 | 5 | 4 | 5 | 8 | 8 | 4 | 7 | 12 | 3 | 7 |
| FUR | 7 | 8 | 8 | 5 | 6 | 6 | 6 | 6 | 12 | 10 | 17 | 9 | 8 | 6 | 18 | 17 | 6 | 4 | 6 | 10 | 6 | 5 | 4 | 16 |
| GCK | ||||||||||||||||||||||||
| GDH | 24 | 60 | 26 | 46 | 22 | 43 | 16 | 46 | 38 | 74 | 206 | 187 | 54 | 46 | 57 | 65 | 181 | 53 | 151 | 70 | 32 | 33 | 86 | 184 |
| GNA | 3 | 7 | 13 | 4 | 12 | 5 | 5 | 2 | 5 | 13 | 8 | 20 | 15 | 3 | 10 | 8 | 7 | 5 | 4 | 4 | 3 | 4 | 4 | 6 |
| GUA | 13 | 10 | 6 | 9 | 21 | 4 | 5 | 8 | 14 | 13 | 5 | 18 | 5 | 4 | 9 | 6 | 3 | 2 | 4 | 3 | 4 | 13 | 11 | 16 |
| GUI | 5 | 10 | 4 | 3 | 6 | 9 | 4 | 3 | 4 | 3 | 17 | 7 | 7 | 3 | 16 | 3 | 14 | 13 | 6 | 5 | 6 | 6 | 5 | 15 |
| GZH | 4 | 12 | 17 | 13 | 9 | 7 | 4 | 7 | 21 | 26 | 2 | 18 | 8 | 3 | 6 | 5 | 4 | 2 | 4 | 4 | 2 | 5 | 3 | 5 |
| HAD | 7 | 10 | 13 | 5 | 6 | 8 | 8 | 3 | 14 | 13 | 9 | 4 | 18 | 5 | 19 | 24 | 6 | 6 | 11 | 13 | 8 | 6 | 7 | 19 |
| HBK | 4 | 8 | 4 | 4 | 5 | 8 | 10 | 6 | 12 | 16 | 4 | 12 | 5 | 5 | 14 | 10 | 5 | 5 | 6 | 6 | 9 | 6 | 8 | 16 |
| HER | 3 | 8 | 3 | 3 | 4 | 7 | 9 | 3 | 9 | 12 | 5 | 12 | 4 | 2 | 10 | 8 | 4 | 5 | 6 | 5 | 8 | 5 | 8 | 15 |
| HLP | 7 | 15 | 9 | 10 | 8 | 7 | 6 | 10 | 17 | 19 | 22 | 14 | 15 | 7 | 26 | 20 | 5 | 6 | 14 | 11 | 10 | 6 | 8 | 17 |
| HON | 3 | 6 | 4 | 5 | 9 | 13 | 2 | 3 | 5 | 6 | 12 | 9 | 3 | 3 | 11 | 3 | 2 | 2 | 4 | 5 | 5 | 12 | 4 | 5 |
| HRB | 8 | 9 | 8 | 6 | 7 | 6 | 5 | 7 | 12 | 8 | 18 | 9 | 8 | 6 | 19 | 15 | 7 | 4 | 6 | 10 | 6 | 5 | 4 | 16 |
| HRN | 77 | 57 | 40 | 100 | 127 | 225 | 51 | 41 | 56 | 94 | 253 | 77 | 41 | 140 | 135 | 37 | 82 | 111 | 260 | 63 | 97 | 120 | 43 | 42 |
| HUA | 3 | 18 | 14 | 6 | 6 | 23 | 5 | 3 | 6 | 7 | 4 | 10 | 19 | 37 | 29 | 35 | 14 | 25 | 38 | 20 | 18 | 6 | 7 | 8 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 52 | 244 | 400 | 214 | 41 | 120 | 89 | 42 | 63 | 165 | 104 | 161 | 38 | 38 | 45 | 87 | 136 | 96 | 178 | 66 | 101 | 45 | 212 | 198 |
| IRT | 12 | 8 | 15 | 3 | 3 | 20 | 17 | 7 | 10 | 22 | 9 | 17 | 19 | 6 | 15 | 5 | 9 | 4 | 11 | 9 | 6 | 5 | 9 | 3 |
| IZN | ||||||||||||||||||||||||
| KAK | 6 | 12 | 11 | 10 | 2 | 9 | 4 | 11 | 17 | 16 | 3 | 20 | 7 | 3 | 6 | 5 | 4 | 3 | 5 | 4 | 5 | 6 | 5 | 3 |
| KDU | 4 | 9 | 6 | 7 | 14 | 6 | 3 | 7 | 11 | 13 | 2 | 22 | 10 | 4 | 12 | 7 | 5 | 2 | 4 | 5 | 3 | 9 | 5 | 2 |
| KMH | ||||||||||||||||||||||||
| KNY | 6 | 11 | 10 | 17 | 3 | 9 | 3 | 11 | 21 | 19 | 2 | 20 | 8 | 3 | 7 | 6 | 4 | 3 | 5 | 4 | 4 | 4 | 6 | 6 |
| KOU | 2 | 15 | 6 | 4 | 6 | 14 | 1 | 2 | 4 | 4 | 8 | 5 | 11 | 6 | 5 | 4 | 13 | 14 | 8 | 6 | 4 | 2 | 5 | 10 |
| LER | 7 | 24 | 16 | 13 | 5 | 6 | 3 | 9 | 18 | 24 | 12 | 13 | 27 | 12 | 23 | 33 | 10 | 7 | 24 | 9 | 13 | 8 | 14 | 15 |
| LRM | 3 | 5 | 11 | 8 | 15 | 5 | 3 | 3 | 10 | 10 | 6 | 21 | 13 | 4 | 11 | 8 | 7 | 5 | 4 | 5 | 4 | 4 | 5 | 10 |
| LVV | 11 | 8 | 6 | 6 | 7 | 8 | 7 | 8 | 14 | 10 | 19 | 7 | 13 | 6 | 18 | 18 | 8 | 5 | 8 | 9 | 4 | 4 | 5 | 15 |
| LYC | ||||||||||||||||||||||||
| LZH | 7 | 4 | 9 | 6 | 4 | 20 | 18 | 4 | 17 | 27 | 4 | 18 | 10 | 3 | 8 | 4 | 5 | 3 | 6 | 5 | 3 | 5 | 6 | 4 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 11 | 2 | 3 | 6 | 10 | 2 | 6 | 12 | 15 | 13 | 6 | 9 | 10 | 18 | 4 | 9 | 6 | 3 | 6 | 6 | 4 | 7 | 13 |
| MCQ | 22 | 43 | 40 | 74 | 26 | 55 | 17 | 13 | 21 | 82 | 178 | 177 | 147 | 66 | 77 | 53 | 31 | 47 | 35 | 24 | 10 | 7 | 21 | 12 |
| MEA | 47 | 52 | 34 | 39 | 14 | 57 | 10 | 4 | 12 | 79 | 43 | 22 | 16 | 10 | 14 | 10 | 5 | 11 | 23 | 15 | 13 | 34 | 13 | 35 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 9 | 10 | 13 | 15 | 10 | 9 | 9 | 7 | 17 | 18 | 7 | 25 | 13 | 4 | 9 | 7 | 6 | 5 | 5 | 6 | 9 | 11 | 7 | 4 |
| NAQ | 97 | 283 | 133 | 128 | 89 | 163 | 25 | 25 | 55 | 45 | 86 | 28 | 19 | 23 | 16 | 79 | 42 | 60 | 49 | 64 | 93 | 21 | 208 | 175 |
| NCK | 7 | 8 | 7 | 5 | 6 | 6 | 5 | 6 | 11 | 8 | 16 | 9 | 7 | 6 | 17 | 14 | 7 | 4 | 5 | 9 | 6 | 5 | 4 | 15 |
| NEW | 16 | 28 | 17 | 20 | 12 | 15 | 10 | 6 | 13 | 16 | 22 | 8 | 8 | 9 | 5 | 6 | 8 | 8 | 16 | 13 | 9 | 18 | 11 | 22 |
| NGK | 7 | 11 | 11 | 8 | 7 | 6 | 7 | 7 | 16 | 16 | 18 | 12 | 13 | 5 | 22 | 22 | 6 | 5 | 12 | 13 | 8 | 6 | 7 | 18 |
| NUR | 9 | 19 | 8 | 15 | 6 | 6 | 7 | 14 | 18 | 22 | 25 | 24 | 33 | 10 | 27 | 17 | 5 | 7 | 23 | 9 | 10 | 5 | 11 | 9 |
| NVS | 7 | 8 | 14 | 5 | 12 | 10 | 13 | 8 | 12 | 14 | 12 | 20 | 4 | 14 | 4 | 8 | 4 | 10 | 7 | 6 | 7 | 5 | 5 | |
| OTT | 9 | 34 | 29 | 8 | 15 | 22 | 3 | 4 | 12 | 18 | 20 | 13 | 8 | 16 | 11 | 7 | 10 | 12 | 15 | 22 | 15 | 17 | 7 | 16 |
| PAF | 6 | 11 | 6 | 13 | 7 | 6 | 6 | 6 | 13 | 15 | 11 | 6 | 12 | 5 | 23 | 14 | 10 | 10 | 22 | 6 | 21 | 5 | 6 | 9 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 15 | 15 | 12 | 9 | 9 | 5 | 6 | 20 | 27 | 3 | 19 | 9 | 3 | 6 | 6 | 3 | 2 | 4 | 5 | 2 | 5 | 4 | 7 |
| PPT | 2 | 6 | 5 | 4 | 6 | 16 | 3 | 2 | 3 | 5 | 12 | 6 | 3 | 1 | 8 | 2 | 3 | 3 | 3 | 8 | 4 | 4 | 9 | 7 |
| PST | ||||||||||||||||||||||||
| QSB | 10 | 11 | 8 | 5 | 13 | 5 | 6 | 13 | 6 | 10 | 10 | 5 | 8 | 9 | 23 | 11 | 7 | 5 | 4 | 9 | 6 | 6 | 4 | 15 |
| RES | 48 | 41 | 52 | 46 | 20 | 98 | 47 | 15 | 55 | 51 | 72 | 94 | 38 | 48 | 76 | 78 | 73 | 46 | 57 | 87 | 38 | 69 | 34 | 41 |
| SBA | 33 | 96 | 36 | 74 | 44 | 67 | 30 | 24 | 40 | 55 | 111 | 73 | 38 | 35 | 58 | 50 | 32 | 39 | 49 | 17 | 27 | 59 | 34 | 40 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 12 | 47 | 24 | 32 | 16 | 57 | 6 | 7 | 15 | 36 | 23 | 9 | 16 | 17 | 13 | 5 | 11 | 12 | 15 | 13 | 6 | 12 | 9 | 24 |
| SJG | 2 | 15 | 6 | 4 | 6 | 12 | 1 | 2 | 4 | 5 | 4 | 4 | 12 | 7 | 3 | 2 | 9 | 15 | 10 | 3 | 3 | 4 | 4 | 8 |
| SOD | 90 | 59 | 32 | 51 | 14 | 26 | 13 | 22 | 24 | 26 | 41 | 33 | 59 | 18 | 41 | 26 | 13 | 26 | 66 | 52 | 50 | 30 | 47 | 77 |
| SPT | 7 | 9 | 7 | 4 | 5 | 9 | 6 | 3 | 11 | 8 | 13 | 9 | 11 | 3 | 17 | 8 | 13 | 6 | 4 | 9 | 7 | 5 | 4 | 16 |
| STJ | 8 | 21 | 13 | 6 | 14 | 16 | 3 | 3 | 9 | 8 | 14 | 19 | 6 | 14 | 6 | 17 | 14 | 16 | 9 | 21 | 14 | 9 | 7 | 11 |
| SUA | 9 | 10 | 9 | 5 | 8 | 4 | 3 | 5 | 7 | 9 | 19 | 5 | 9 | 5 | 22 | 11 | 8 | 5 | 5 | 9 | 5 | 5 | 3 | 14 |
| TAM | 6 | 9 | 4 | 3 | 5 | 7 | 4 | 7 | 5 | 5 | 11 | 3 | 6 | 10 | 23 | 5 | 14 | 5 | 6 | 6 | 7 | 5 | 6 | 15 |
| TAN | 5 | 5 | 4 | 11 | 5 | 4 | 4 | 11 | 13 | 19 | 5 | 4 | 4 | 6 | 10 | 7 | 6 | 3 | 5 | 4 | 8 | 5 | 5 | 12 |
| TDC | ||||||||||||||||||||||||
| THL | 32 | 41 | 44 | 53 | 12 | 65 | 34 | 16 | 54 | 42 | 77 | 88 | 21 | 42 | 91 | 49 | 45 | 44 | 45 | 40 | 43 | 35 | 37 | 38 |
| THY | 7 | 10 | 8 | 6 | 7 | 6 | 6 | 6 | 12 | 10 | 18 | 9 | 8 | 7 | 20 | 16 | 8 | 5 | 5 | 10 | 6 | 5 | 4 | 16 |
| TRW | 2 | 21 | 13 | 5 | 3 | 16 | 5 | 3 | 4 | 6 | 6 | 8 | 5 | 5 | 14 | 4 | 4 | 4 | 4 | 5 | 5 | 9 | 9 | 10 |
| TSU | 3 | 9 | 3 | 4 | 3 | 11 | 7 | 4 | 13 | 16 | 5 | 10 | 7 | 7 | 13 | 8 | 4 | 3 | 7 | 6 | 8 | 5 | 8 | 15 |
| TUC | 5 | 11 | 9 | 9 | 5 | 18 | 8 | 5 | 8 | 7 | 15 | 8 | 9 | 5 | 5 | 3 | 5 | 4 | 10 | 4 | 9 | 8 | 6 | 4 |
| UPS | 5 | 17 | 8 | 13 | 5 | 5 | 5 | 10 | 16 | 21 | 17 | 22 | 27 | 9 | 24 | 22 | 6 | 7 | 23 | 8 | 10 | 6 | 11 | 11 |
| VAL | 6 | 9 | 13 | 5 | 7 | 7 | 7 | 3 | 14 | 15 | 6 | 3 | 14 | 4 | 14 | 26 | 7 | 8 | 11 | 11 | 7 | 5 | 6 | 17 |
| VIC | 12 | 26 | 18 | 19 | 12 | 21 | 8 | 5 | 12 | 14 | 27 | 8 | 7 | 9 | 8 | 5 | 8 | 5 | 12 | 13 | 6 | 15 | 9 | 18 |
| VSS | 3 | 18 | 7 | 4 | 5 | 16 | 2 | 3 | 4 | 5 | 8 | 2 | 16 | 7 | 14 | 13 | 17 | 14 | 6 | 5 | 5 | 7 | 9 | 12 |
| WNG | 8 | 16 | 14 | 9 | 8 | 7 | 8 | 8 | 16 | 21 | 18 | 13 | 18 | 7 | 24 | 26 | 6 | 6 | 16 | 14 | 11 | 7 | 9 | 21 |
| YKC | 84 | 129 | 65 | 103 | 90 | 185 | 94 | 16 | 320 | 281 | 409 | 86 | 48 | 103 | 107 | 111 | 75 | 42 | 61 | 38 | 22 | 68 | 53 | 39 |
- Date modified: