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 | 5 | 3 | 2 | 7 | 16 | 49 | 18 | 21 | 50 | 32 | 28 | 18 | 14 | 4 | 17 | 8 | 7 | 3 | 8 | 8 | 29 | 17 | 7 | 17 |
| ABG | 8 | 7 | 7 | 22 | 17 | 20 | 24 | 14 | 17 | 9 | 11 | 7 | 5 | 4 | 5 | 13 | 6 | 6 | 9 | 7 | 18 | 13 | 10 | 11 |
| ABK | 113 | 29 | 11 | 34 | 20 | 88 | 30 | 39 | 81 | 67 | 76 | 67 | 22 | 49 | 65 | 64 | 42 | 26 | 58 | 195 | 362 | 205 | 66 | 229 |
| AIA | 31 | 9 | 3 | 13 | 25 | 31 | 26 | 16 | 7 | 9 | 7 | 16 | 9 | 9 | 15 | 12 | 12 | 9 | 8 | 9 | 25 | 23 | 8 | 27 |
| AMS | 6 | 9 | 6 | 5 | 19 | 17 | 16 | 7 | 6 | 17 | 6 | 7 | 12 | 7 | 5 | 20 | 10 | 5 | 7 | 4 | 6 | 6 | 4 | 13 |
| API | 6 | 5 | 9 | 14 | 15 | 21 | 17 | 9 | 10 | 10 | 9 | 3 | 3 | 4 | 5 | 9 | 4 | 3 | 6 | 7 | 6 | 14 | 14 | 6 |
| AQU | 5 | 3 | 1 | 7 | 9 | 10 | 26 | 6 | 6 | 10 | 12 | 9 | 5 | 5 | 12 | 11 | 6 | 4 | 7 | 11 | 30 | 23 | 9 | 17 |
| ARS | ||||||||||||||||||||||||
| ASC | 4 | 4 | 1 | 5 | 6 | 5 | 15 | 13 | 9 | 5 | 19 | 6 | 8 | 6 | 6 | 9 | 4 | 9 | 8 | 3 | 8 | 5 | 7 | 15 |
| ASP | 4 | 3 | 4 | 10 | 26 | 13 | 18 | 7 | 8 | 18 | 7 | 8 | 12 | 6 | 11 | 19 | 7 | 5 | 3 | 3 | 6 | 13 | 5 | 4 |
| BDV | 6 | 3 | 2 | 8 | 11 | 10 | 29 | 4 | 7 | 12 | 5 | 12 | 9 | 5 | 9 | 15 | 9 | 5 | 10 | 14 | 37 | 27 | 10 | 16 |
| BEL | 9 | 5 | 4 | 8 | 15 | 6 | 30 | 8 | 12 | 14 | 6 | 13 | 13 | 10 | 8 | 20 | 12 | 9 | 11 | 15 | 48 | 25 | 13 | 14 |
| BFE | 14 | 6 | 4 | 9 | 19 | 11 | 33 | 8 | 13 | 14 | 7 | 21 | 17 | 13 | 11 | 25 | 19 | 10 | 15 | 19 | 49 | 22 | 16 | 19 |
| BFO | ||||||||||||||||||||||||
| BLC | 42 | 16 | 14 | 28 | 83 | 551 | 142 | 90 | 39 | 56 | 37 | 86 | 103 | 92 | 99 | 121 | 94 | 79 | 55 | 101 | 110 | 79 | 54 | 90 |
| BMT | 8 | 8 | 4 | 5 | 10 | 13 | 8 | 4 | 16 | 11 | 10 | 8 | 13 | 8 | 6 | 16 | 7 | 5 | 7 | 4 | 7 | 3 | 5 | 5 |
| BNG | 4 | 4 | 2 | 5 | 4 | 14 | 15 | 8 | 9 | 10 | 13 | 10 | 2 | 7 | 16 | 11 | 7 | 3 | 10 | 6 | 25 | 15 | 7 | 20 |
| BOU | 14 | 8 | 3 | 6 | 7 | 28 | 8 | 11 | 19 | 17 | 8 | 5 | 6 | 11 | 15 | 14 | 8 | 7 | 4 | 9 | 15 | 18 | 15 | 17 |
| BOX | 11 | 5 | 2 | 5 | 19 | 19 | 22 | 8 | 23 | 23 | 23 | 20 | 18 | 14 | 33 | 15 | 6 | 12 | 13 | 46 | 21 | 15 | 13 | |
| BRW | 60 | 48 | 43 | 198 | 99 | 92 | 140 | 64 | 178 | 410 | 76 | 147 | 167 | 46 | 84 | 138 | 202 | 301 | 236 | 177 | 178 | 83 | 82 | 82 |
| BSL | 13 | 5 | 3 | 10 | 18 | 22 | 4 | 16 | 10 | 9 | 11 | 9 | 6 | 15 | 6 | 17 | 7 | 5 | 4 | 8 | 15 | 16 | 9 | 13 |
| CBB | 60 | 24 | 29 | 32 | 21 | 93 | 44 | 38 | 38 | 37 | 27 | 57 | 38 | 47 | 81 | 61 | 224 | 121 | 195 | 252 | 176 | 131 | 146 | 72 |
| CLF | 7 | 3 | 2 | 8 | 11 | 18 | 27 | 5 | 8 | 6 | 6 | 11 | 14 | 7 | 13 | 12 | 11 | 6 | 10 | 14 | 29 | 25 | 12 | 23 |
| CMO | 54 | 33 | 21 | 82 | 93 | 131 | 256 | 437 | 491 | 513 | 300 | 131 | 146 | 83 | 129 | 285 | 42 | 64 | 74 | 35 | 29 | 40 | 52 | 63 |
| CNB | 6 | 3 | 4 | 10 | 23 | 7 | 10 | 9 | 22 | 27 | 7 | 10 | 13 | 7 | 10 | 17 | 9 | 10 | 4 | 2 | 11 | 15 | 11 | 10 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 12 | 3 | 12 | 25 | 12 | 17 | 5 | 11 | 16 | 7 | 8 | 10 | 6 | 9 | 17 | 7 | 7 | 4 | 2 | 9 | 16 | 5 | 4 |
| CZT | 7 | 5 | 2 | 2 | 12 | 13 | 7 | 6 | 14 | 11 | 7 | 8 | 14 | 10 | 10 | 20 | 6 | 8 | 4 | 9 | 35 | 10 | 5 | 9 |
| DLR | 12 | 6 | 4 | 9 | 13 | 26 | 5 | 12 | 12 | 11 | 10 | 8 | 4 | 9 | 7 | 15 | 8 | 6 | 4 | 7 | 14 | 15 | 6 | 14 |
| DOU | 10 | 4 | 4 | 8 | 12 | 17 | 33 | 7 | 9 | 8 | 5 | 16 | 12 | 9 | 10 | 14 | 13 | 6 | 11 | 17 | 33 | 29 | 14 | 26 |
| DRV | 93 | 98 | 47 | 74 | 52 | 82 | 23 | 36 | 87 | 29 | 18 | 24 | 18 | 22 | 34 | 43 | 41 | 43 | 41 | 30 | 47 | 95 | 84 | 110 |
| EBR | 6 | 3 | 2 | 9 | 18 | 23 | 26 | 5 | 15 | 12 | 8 | 12 | 7 | 9 | 15 | 13 | 12 | 10 | 10 | 22 | 27 | 24 | 11 | 21 |
| ESK | 14 | 6 | 3 | 10 | 19 | 27 | 44 | 15 | 15 | 10 | 9 | 22 | 18 | 17 | 13 | 22 | 26 | 10 | 19 | 26 | 39 | 28 | 20 | 36 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 12 | 4 | 10 | 27 | 7 | 17 | 26 | 33 | 24 | 16 | 12 | 6 | 5 | 6 | 14 | 8 | 9 | 7 | 7 | 17 | 8 | 8 | 11 |
| FCC | 84 | 57 | 14 | 25 | 619 | 210 | 213 | 115 | 115 | 115 | 100 | 108 | 153 | 69 | 63 | 77 | 32 | 33 | 31 | 122 | 90 | 71 | 72 | 87 |
| FRD | 14 | 4 | 4 | 9 | 24 | 22 | 6 | 24 | 11 | 8 | 7 | 14 | 9 | 14 | 9 | 14 | 14 | 8 | 9 | 14 | 19 | 13 | 13 | 17 |
| FRN | 10 | 9 | 2 | 5 | 10 | 25 | 9 | 23 | 16 | 16 | 10 | 6 | 4 | 3 | 12 | 8 | 6 | 5 | 4 | 7 | 13 | 12 | 9 | 11 |
| FUR | 6 | 3 | 2 | 7 | 11 | 12 | 28 | 4 | 7 | 11 | 5 | 12 | 11 | 5 | 10 | 14 | 8 | 5 | 9 | 13 | 34 | 26 | 11 | 18 |
| GCK | ||||||||||||||||||||||||
| GDH | 28 | 20 | 10 | 42 | 104 | 107 | 67 | 47 | 47 | 84 | 85 | 136 | 156 | 86 | 49 | 130 | 147 | 115 | 151 | 36 | 121 | 91 | 24 | 101 |
| GNA | 2 | 6 | 11 | 11 | 20 | 8 | 8 | 4 | 12 | 19 | 8 | 9 | 11 | 5 | 12 | 18 | 7 | 4 | 4 | 5 | 6 | 7 | 5 | 6 |
| GUA | 19 | 8 | 14 | 15 | 28 | 23 | 30 | 13 | 6 | 11 | 6 | 4 | 8 | 6 | 5 | 14 | 4 | 4 | 4 | 2 | 4 | 7 | 15 | 12 |
| GUI | 3 | 3 | 1 | 7 | 4 | 13 | 20 | 7 | 3 | 8 | 20 | 6 | 3 | 6 | 7 | 10 | 6 | 10 | 6 | 5 | 10 | 6 | 9 | 17 |
| GZH | 7 | 15 | 9 | 12 | 14 | 14 | 24 | 13 | 12 | 6 | 6 | 6 | 8 | 7 | 5 | 13 | 6 | 2 | 5 | 2 | 7 | 2 | 3 | 3 |
| HAD | 9 | 4 | 2 | 10 | 15 | 25 | 31 | 6 | 9 | 6 | 7 | 14 | 11 | 8 | 9 | 14 | 16 | 7 | 14 | 18 | 26 | 24 | 13 | 28 |
| HBK | 4 | 5 | 3 | 3 | 6 | 10 | 19 | 5 | 8 | 11 | 9 | 24 | 8 | 7 | 5 | 16 | 6 | 5 | 9 | 8 | 29 | 14 | 9 | 19 |
| HER | 3 | 4 | 2 | 2 | 6 | 10 | 15 | 3 | 10 | 7 | 5 | 17 | 3 | 5 | 4 | 14 | 8 | 5 | 8 | 8 | 24 | 12 | 8 | 18 |
| HLP | 10 | 6 | 3 | 7 | 14 | 5 | 31 | 7 | 11 | 14 | 10 | 19 | 18 | 13 | 13 | 24 | 14 | 10 | 12 | 16 | 48 | 20 | 14 | 17 |
| HON | 3 | 2 | 5 | 11 | 14 | 17 | 13 | 11 | 8 | 11 | 10 | 2 | 3 | 4 | 2 | 9 | 3 | 6 | 3 | 6 | 9 | 9 | 8 | 5 |
| HRB | 7 | 4 | 2 | 7 | 11 | 8 | 29 | 4 | 9 | 14 | 7 | 11 | 8 | 5 | 11 | 16 | 8 | 5 | 9 | 14 | 37 | 26 | 11 | 15 |
| HRN | 46 | 27 | 46 | 71 | 126 | 61 | 87 | 118 | 128 | 156 | 95 | 151 | 58 | 52 | 85 | 78 | 57 | 35 | 76 | 61 | 392 | 212 | 27 | 32 |
| HUA | 10 | 4 | 4 | 14 | 18 | 20 | 4 | 11 | 7 | 6 | 11 | 17 | 27 | 55 | 44 | 33 | 42 | 41 | 34 | 27 | 32 | 12 | 10 | 10 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 35 | 27 | 12 | 44 | 410 | 449 | 150 | 110 | 90 | 64 | 145 | 138 | 168 | 148 | 61 | 91 | 78 | 66 | 110 | 90 | 126 | 58 | 63 | 91 |
| IRT | 5 | 12 | 17 | 11 | 16 | 11 | 15 | 13 | 9 | 19 | 9 | 13 | 15 | 10 | 12 | 22 | 9 | 7 | 9 | 7 | 4 | 4 | 4 | 8 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 9 | 15 | 12 | 14 | 12 | 15 | 12 | 10 | 8 | 6 | 6 | 9 | 7 | 6 | 13 | 6 | 4 | 4 | 2 | 5 | 6 | 6 | 9 |
| KDU | 4 | 11 | 8 | 8 | 25 | 18 | 24 | 11 | 7 | 16 | 6 | 6 | 10 | 6 | 8 | 17 | 6 | 5 | 2 | 1 | 6 | 12 | 6 | 4 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 9 | 11 | 12 | 15 | 10 | 15 | 12 | 12 | 8 | 6 | 6 | 10 | 7 | 6 | 14 | 6 | 3 | 5 | 2 | 6 | 5 | 5 | 7 |
| KOU | 6 | 3 | 2 | 9 | 13 | 8 | 9 | 14 | 3 | 3 | 15 | 8 | 16 | 18 | 6 | 7 | 3 | 11 | 12 | 15 | 12 | 5 | 6 | 7 |
| LER | 14 | 4 | 3 | 6 | 19 | 15 | 40 | 15 | 13 | 16 | 8 | 20 | 16 | 17 | 17 | 23 | 24 | 15 | 25 | 21 | 41 | 28 | 17 | 19 |
| LRM | 5 | 3 | 11 | 8 | 18 | 21 | 19 | 8 | 9 | 20 | 9 | 8 | 12 | 6 | 9 | 17 | 6 | 4 | 3 | 3 | 10 | 4 | 8 | 4 |
| LVV | 8 | 4 | 3 | 7 | 12 | 6 | 28 | 5 | 11 | 12 | 8 | 10 | 9 | 6 | 12 | 20 | 10 | 9 | 10 | 13 | 38 | 26 | 10 | 14 |
| LYC | ||||||||||||||||||||||||
| LZH | 4 | 4 | 5 | 7 | 13 | 11 | 9 | 3 | 13 | 14 | 11 | 8 | 11 | 9 | 4 | 15 | 7 | 5 | 6 | 3 | 8 | 5 | 6 | 3 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 3 | 2 | 7 | 9 | 5 | 18 | 5 | 4 | 15 | 28 | 11 | 6 | 6 | 15 | 9 | 5 | 4 | 10 | 6 | 10 | 7 | 8 | 16 |
| MCQ | 22 | 26 | 18 | 58 | 42 | 108 | 53 | 320 | 601 | 169 | 197 | 334 | 108 | 57 | 120 | 244 | 70 | 38 | 30 | 27 | 25 | 23 | 13 | 18 |
| MEA | 42 | 11 | 9 | 23 | 65 | 58 | 245 | 393 | 420 | 102 | 121 | 77 | 33 | 25 | 25 | 34 | 21 | 22 | 24 | 25 | 18 | 35 | 52 | 52 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 6 | 13 | 15 | 13 | 20 | 14 | 10 | 10 | 14 | 13 | 7 | 8 | 12 | 9 | 8 | 16 | 6 | 4 | 6 | 4 | 5 | 7 | 14 | 14 |
| NAQ | 147 | 92 | 18 | 132 | 298 | 178 | 246 | 361 | 206 | 220 | 46 | 42 | 52 | 35 | 47 | 46 | 66 | 59 | 109 | 133 | 133 | 62 | 43 | 104 |
| NCK | 6 | 4 | 2 | 6 | 9 | 8 | 27 | 4 | 8 | 13 | 7 | 11 | 8 | 5 | 11 | 15 | 7 | 5 | 8 | 12 | 34 | 23 | 11 | 15 |
| NEW | 24 | 14 | 4 | 7 | 25 | 32 | 35 | 35 | 25 | 21 | 8 | 6 | 9 | 9 | 17 | 15 | 14 | 9 | 10 | 14 | 11 | 21 | 25 | 29 |
| NGK | 9 | 5 | 2 | 8 | 15 | 11 | 32 | 6 | 9 | 11 | 7 | 15 | 14 | 8 | 8 | 22 | 12 | 8 | 13 | 17 | 45 | 27 | 14 | 19 |
| NUR | 13 | 5 | 3 | 4 | 18 | 20 | 27 | 7 | 20 | 23 | 17 | 24 | 20 | 21 | 17 | 30 | 18 | 8 | 14 | 10 | 47 | 20 | 14 | 15 |
| NVS | 8 | 3 | 8 | 16 | 22 | 10 | 8 | 15 | 16 | 23 | 15 | 13 | 11 | 8 | 6 | 18 | 9 | 7 | 7 | 7 | 8 | 7 | 6 | 6 |
| OTT | 19 | 5 | 4 | 10 | 21 | 32 | 20 | 30 | 32 | 14 | 9 | 13 | 9 | 18 | 16 | 18 | 11 | 16 | 21 | 28 | 27 | 11 | 23 | 29 |
| PAF | 16 | 10 | 4 | 9 | 16 | 32 | 14 | 4 | 14 | 22 | 13 | 10 | 14 | 11 | 12 | 34 | 20 | 7 | 17 | 22 | 37 | 24 | 6 | 34 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 7 | 21 | 13 | 17 | 20 | 17 | 30 | 16 | 13 | 10 | 10 | 7 | 9 | 7 | 5 | 16 | 8 | 3 | 7 | 3 | 10 | 3 | 4 | 4 |
| PPT | 5 | 2 | 2 | 9 | 13 | 19 | 14 | 12 | 10 | 7 | 9 | 2 | 2 | 4 | 4 | 9 | 9 | 3 | 10 | 7 | 7 | 11 | 3 | 15 |
| PST | ||||||||||||||||||||||||
| QSB | 8 | 4 | 2 | 6 | 16 | 6 | 25 | 5 | 8 | 24 | 12 | 12 | 4 | 6 | 15 | 18 | 7 | 7 | 8 | 11 | 36 | 26 | 12 | 17 |
| RES | 34 | 24 | 23 | 54 | 68 | 51 | 20 | 25 | 59 | 31 | 44 | 79 | 28 | 54 | 56 | 41 | 46 | 115 | 102 | 93 | 83 | 40 | 75 | 36 |
| SBA | 45 | 31 | 29 | 54 | 66 | 40 | 24 | 52 | 83 | 51 | 24 | 45 | 26 | 35 | 49 | 55 | 61 | 59 | 50 | 52 | 52 | 50 | 57 | 49 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 26 | 13 | 8 | 20 | 39 | 36 | 40 | 133 | 159 | 63 | 34 | 48 | 19 | 13 | 23 | 24 | 14 | 9 | 24 | 13 | 12 | 17 | 23 | 33 |
| SJG | 7 | 3 | 2 | 6 | 11 | 10 | 6 | 14 | 3 | 4 | 5 | 8 | 2 | 9 | 6 | 8 | 11 | 2 | 4 | 11 | 15 | 5 | 5 | 4 |
| SOD | 97 | 12 | 7 | 27 | 20 | 61 | 23 | 24 | 68 | 55 | 69 | 56 | 27 | 41 | 42 | 60 | 40 | 21 | 25 | 185 | 215 | 150 | 43 | 149 |
| SPT | 6 | 3 | 1 | 8 | 8 | 18 | 26 | 2 | 7 | 5 | 5 | 10 | 10 | 5 | 12 | 11 | 9 | 5 | 6 | 10 | 22 | 18 | 10 | 21 |
| STJ | 12 | 4 | 3 | 11 | 12 | 13 | 14 | 23 | 9 | 18 | 9 | 18 | 16 | 13 | 8 | 10 | 19 | 13 | 26 | 23 | 34 | 8 | 14 | 17 |
| SUA | ||||||||||||||||||||||||
| TAM | 4 | 3 | 1 | 6 | 4 | 10 | 22 | 8 | 11 | 17 | 12 | 10 | 4 | 2 | 16 | 11 | 8 | 5 | 6 | 8 | 24 | 15 | 9 | 20 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 36 | 22 | 19 | 65 | 36 | 64 | 26 | 35 | 32 | 40 | 21 | 23 | 34 | 53 | 74 | 59 | 147 | 115 | 90 | 72 | 18 | 22 | 50 | 20 |
| THY | 7 | 4 | 2 | 7 | 10 | 9 | 29 | 5 | 9 | 15 | 8 | 13 | 8 | 6 | 13 | 17 | 8 | 6 | 9 | 14 | 37 | 25 | 12 | 17 |
| TRW | 11 | 6 | 3 | 10 | 18 | 15 | 6 | 13 | 4 | 3 | 9 | 10 | 10 | 6 | 6 | 13 | 14 | 6 | 7 | 7 | 13 | 11 | 8 | 9 |
| TSU | 4 | 5 | 2 | 4 | 5 | 11 | 22 | 4 | 7 | 10 | 14 | 20 | 14 | 3 | 6 | 15 | 9 | 4 | 9 | 8 | 26 | 15 | 10 | 22 |
| TUC | 11 | 10 | 3 | 8 | 6 | 26 | 7 | 14 | 13 | 14 | 10 | 6 | 5 | 5 | 11 | 12 | 8 | 4 | 3 | 7 | 16 | 15 | 8 | 14 |
| UPS | 11 | 5 | 3 | 4 | 15 | 14 | 32 | 8 | 12 | 20 | 10 | 21 | 18 | 18 | 13 | 25 | 16 | 8 | 14 | 10 | 43 | 19 | 13 | 9 |
| VAL | 9 | 4 | 1 | 9 | 16 | 27 | 32 | 8 | 8 | 5 | 7 | 14 | 10 | 8 | 6 | 11 | 17 | 7 | 16 | 15 | 20 | 21 | 12 | 28 |
| VIC | 19 | 15 | 3 | 6 | 28 | 27 | 28 | 38 | 20 | 20 | 3 | 7 | 6 | 5 | 13 | 11 | 10 | 7 | 13 | 12 | 9 | 17 | 17 | 22 |
| VSS | 6 | 5 | 2 | 8 | 14 | 7 | 9 | 12 | 4 | 2 | 12 | 6 | 7 | 21 | 13 | 7 | 7 | 17 | 14 | 9 | 9 | 3 | 9 | 14 |
| WNG | 14 | 6 | 3 | 9 | 17 | 13 | 34 | 7 | 12 | 12 | 8 | 18 | 17 | 11 | 8 | 24 | 17 | 9 | 15 | 20 | 51 | 26 | 18 | 22 |
| YKC | 87 | 42 | 19 | 70 | 383 | 181 | 334 | 171 | 124 | 98 | 55 | 112 | 111 | 56 | 30 | 165 | 52 | 67 | 58 | 55 | 50 | 58 | 95 | 70 |
- Date modified: