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 | 35 | 19 | 18 | 23 | 22 | 13 | 14 | 14 | 19 | 8 | 8 | 4 | 4 | 5 | 6 | 4 | 5 | 11 | |
| ABG | 18 | 11 | 13 | 12 | 8 | 12 | 13 | 4 | 18 | 24 | 11 | 18 | 8 | 8 | 20 | 14 | 7 | 5 | 9 | 9 | 11 | 7 | 6 | 11 |
| ABK | 183 | 98 | 75 | 74 | 22 | 45 | 18 | 29 | 23 | 26 | 47 | 34 | 64 | 24 | 77 | 45 | 29 | 29 | 101 | 41 | 74 | 53 | 102 | 111 |
| AIA | 9 | 26 | 30 | 12 | 6 | 16 | 11 | 4 | 6 | 8 | 9 | 15 | 5 | 7 | 13 | 8 | 5 | 4 | 6 | 5 | 8 | 7 | 10 | 9 |
| AMS | 5 | 5 | 4 | 11 | 6 | 3 | 4 | 12 | 14 | 18 | 13 | 18 | 9 | 3 | 3 | 2 | 6 | 4 | 6 | 5 | 5 | 2 | 5 | 7 |
| 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 | 19 | 10 | 9 | 4 | 3 | 9 | 6 | 5 | 3 | 15 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 10 | 2 | 2 | 4 | 10 | 3 | 5 | 3 | 4 | 7 | 2 | 5 | 1 | 13 | 9 | 16 | 8 | 9 | 5 | 5 | 5 | 6 | 13 |
| ASP | 4 | 6 | 10 | 7 | 19 | 10 | 6 | 2 | 12 | 14 | 4 | 26 | 13 | 5 | 14 | 9 | 8 | 3 | 6 | 6 | 3 | 9 | 4 | 7 |
| BDV | 8 | 8 | 8 | 5 | 5 | 6 | 6 | 7 | 12 | 11 | 17 | 10 | 8 | 6 | 17 | 17 | 6 | 4 | 7 | 10 | 6 | 4 | 4 | 16 |
| BEL | 9 | 11 | 11 | 8 | 7 | 5 | 7 | 11 | 14 | 16 | 20 | 10 | 14 | 6 | 18 | 18 | 7 | 4 | 11 | 11 | 9 | 6 | 7 | 15 |
| BFE | 8 | 17 | 13 | 10 | 7 | 6 | 7 | 9 | 17 | 22 | 19 | 17 | 20 | 8 | 23 | 24 | 5 | 7 | 19 | 14 | 11 | 7 | 10 | 18 |
| BFO | ||||||||||||||||||||||||
| BLC | 40 | 50 | 276 | 213 | 48 | 154 | 73 | 8 | 18 | 103 | 206 | 80 | 61 | 118 | 94 | 115 | 34 | 74 | 86 | 49 | 38 | 70 | 114 | 108 |
| BMT | 7 | 3 | 8 | 12 | 5 | 20 | 17 | 4 | 20 | 27 | 5 | 23 | 13 | 3 | 9 | 5 | 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 | 8 | 15 | 10 | 11 | 4 | 17 | 8 | 5 | 9 | 16 | 8 | 8 | 8 | 4 | 5 | 5 | 7 | 5 | 15 | 7 | 9 | 12 | 6 | 11 |
| BOX | 7 | 15 | 7 | 13 | 9 | 6 | 8 | 17 | 18 | 21 | 27 | 19 | 32 | 8 | 24 | 12 | 7 | 6 | 15 | 10 | 7 | 5 | 10 | 7 |
| BRW | 99 | 135 | 118 | 177 | 102 | 104 | 32 | 63 | 38 | 354 | 492 | 134 | 134 | 181 | 493 | 231 | 278 | 373 | 268 | 185 | 143 | 49 | 28 | 73 |
| 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 | 48 | 61 | 27 | 45 | 28 | 89 | 38 | 11 | 40 | 57 | 106 | 54 | 33 | 51 | 89 | 197 | 168 | 127 | 287 | 57 | 55 | 106 | 69 | 47 |
| CLF | 7 | 8 | 9 | 4 | 5 | 8 | 7 | 4 | 12 | 12 | 13 | 10 | 9 | 5 | 19 | 16 | 4 | 4 | 7 | 10 | 6 | 4 | 4 | 17 |
| CMO | 57 | 113 | 36 | 86 | 41 | 96 | 35 | 30 | 36 | 247 | 318 | 254 | 170 | 69 | 127 | 65 | 29 | 78 | 55 | 23 | 15 | 28 | 23 | 46 |
| CNB | 5 | 10 | 10 | 10 | 8 | 20 | 11 | 3 | 15 | 13 | 11 | 30 | 11 | 8 | 22 | 16 | 9 | 3 | 9 | 8 | 7 | 2 | 10 | 14 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 9 | 6 | 8 | 15 | 14 | 6 | 2 | 14 | 12 | 6 | 26 | 10 | 5 | 17 | 10 | 7 | 2 | 6 | 6 | 4 | 7 | 6 | 12 |
| CZT | 8 | 6 | 7 | 14 | 5 | 3 | 6 | 6 | 16 | 23 | 7 | 16 | 11 | 3 | 10 | 6 | 7 | 4 | 10 | 6 | 9 | 2 | 7 | 8 |
| 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 | 24 | 64 | 52 | 37 | 28 | 79 | 48 | 14 | 21 | 35 | 20 | 87 | 42 | 16 | 92 | 69 | 39 | 28 | 44 | 41 | 42 | 31 | 32 | 33 |
| 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 | 5 | 17 | 18 | 8 | 9 | 12 | 7 | 4 | 20 | 20 | 15 | 12 | 25 | 9 | 26 | 35 | 9 | 11 | 17 | 16 | 11 | 7 | 11 | 21 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 13 | 16 | 11 | 8 | 24 | 7 | 6 | 16 | 23 | 28 | 28 | 6 | 10 | 26 | 19 | 7 | 5 | 9 | 7 | 15 | 10 | 14 | 9 |
| FCC | 91 | 101 | 158 | 116 | 110 | 181 | 51 | 38 | 217 | 319 | 132 | 151 | 66 | 32 | 23 | 28 | 28 | 25 | 29 | 88 | 57 | 46 | 88 | 45 |
| FRD | 3 | 23 | 17 | 6 | 9 | 17 | 5 | 5 | 4 | 15 | 7 | 19 | 6 | 10 | 9 | 9 | 8 | 7 | 12 | 11 | 11 | 10 | 6 | 10 |
| FRN | 3 | 12 | 10 | 9 | 5 | 17 | 8 | 4 | 9 | 6 | 16 | 7 | 10 | 4 | 3 | 3 | 6 | 11 | 6 | 4 | 7 | 10 | 3 | 6 |
| 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 | 28 | 43 | 26 | 45 | 23 | 30 | 32 | 70 | 56 | 99 | 212 | 231 | 74 | 53 | 50 | 97 | 154 | 41 | 91 | 43 | 38 | 43 | 83 | 189 |
| GNA | 3 | 6 | 13 | 4 | 12 | 4 | 5 | 2 | 5 | 13 | 7 | 21 | 15 | 3 | 11 | 8 | 7 | 5 | 4 | 4 | 3 | 4 | 4 | 7 |
| GUA | 12 | 10 | 6 | 8 | 21 | 4 | 4 | 8 | 14 | 13 | 5 | 18 | 5 | 4 | 9 | 6 | 3 | 2 | 4 | 3 | 4 | 13 | 10 | 15 |
| GUI | 5 | 11 | 4 | 4 | 6 | 10 | 4 | 3 | 4 | 4 | 19 | 9 | 11 | 2 | 16 | 4 | 15 | 15 | 7 | 5 | 6 | 6 | 5 | 15 |
| GZH | 3 | 11 | 14 | 10 | 8 | 7 | 3 | 6 | 17 | 22 | 2 | 16 | 7 | 2 | 5 | 5 | 3 | 2 | 4 | 3 | 2 | 4 | 3 | 4 |
| HAD | 7 | 9 | 13 | 5 | 7 | 9 | 8 | 3 | 15 | 13 | 10 | 5 | 19 | 5 | 19 | 23 | 6 | 6 | 12 | 13 | 8 | 6 | 7 | 19 |
| HBK | 4 | 6 | 4 | 4 | 4 | 9 | 14 | 8 | 12 | 20 | 6 | 11 | 4 | 5 | 13 | 11 | 6 | 5 | 5 | 5 | 9 | 6 | 6 | 14 |
| HER | 3 | 4 | 4 | 4 | 4 | 6 | 12 | 6 | 10 | 16 | 5 | 11 | 4 | 2 | 10 | 10 | 4 | 4 | 5 | 5 | 8 | 5 | 6 | 13 |
| HLP | 7 | 15 | 9 | 10 | 7 | 6 | 6 | 10 | 17 | 18 | 21 | 14 | 14 | 7 | 25 | 20 | 4 | 6 | 14 | 11 | 10 | 6 | 8 | 16 |
| HON | 3 | 6 | 3 | 4 | 9 | 13 | 2 | 3 | 4 | 6 | 12 | 8 | 4 | 2 | 11 | 3 | 4 | 1 | 5 | 5 | 6 | 10 | 2 | 4 |
| HRB | 8 | 9 | 8 | 6 | 7 | 6 | 5 | 7 | 12 | 9 | 17 | 9 | 8 | 5 | 18 | 16 | 7 | 4 | 6 | 10 | 6 | 5 | 4 | 15 |
| HRN | 79 | 54 | 41 | 95 | 119 | 211 | 50 | 38 | 59 | 93 | 248 | 77 | 40 | 139 | 135 | 39 | 84 | 107 | 263 | 62 | 94 | 118 | 45 | 45 |
| 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 | 43 | 121 | 312 | 149 | 47 | 95 | 89 | 44 | 56 | 165 | 122 | 172 | 54 | 50 | 61 | 52 | 112 | 62 | 107 | 70 | 86 | 44 | 79 | 198 |
| IRT | 12 | 9 | 15 | 3 | 3 | 20 | 17 | 7 | 9 | 22 | 9 | 17 | 19 | 6 | 15 | 4 | 9 | 4 | 10 | 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 | 4 | 3 |
| KDU | 4 | 9 | 6 | 7 | 13 | 7 | 3 | 7 | 11 | 14 | 2 | 21 | 10 | 3 | 11 | 7 | 5 | 2 | 4 | 4 | 2 | 10 | 4 | 3 |
| 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 | 15 | 2 | 2 | 4 | 5 | 8 | 5 | 15 | 11 | 3 | 6 | 11 | 14 | 11 | 6 | 5 | 1 | 5 | 9 |
| LER | 7 | 24 | 17 | 13 | 6 | 7 | 3 | 9 | 18 | 23 | 13 | 14 | 28 | 12 | 24 | 33 | 10 | 7 | 24 | 10 | 13 | 8 | 14 | 15 |
| LRM | 3 | 5 | 11 | 7 | 15 | 5 | 3 | 3 | 9 | 10 | 6 | 21 | 13 | 4 | 11 | 8 | 7 | 5 | 4 | 5 | 4 | 4 | 5 | 9 |
| LVV | 11 | 8 | 6 | 6 | 7 | 8 | 8 | 8 | 15 | 11 | 17 | 7 | 13 | 6 | 17 | 18 | 8 | 5 | 8 | 9 | 4 | 4 | 5 | 14 |
| LYC | ||||||||||||||||||||||||
| LZH | 7 | 4 | 9 | 7 | 3 | 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 | 11 | 2 | 5 | 13 | 17 | 14 | 3 | 8 | 10 | 21 | 6 | 11 | 8 | 4 | 6 | 5 | 4 | 7 | 13 |
| MCQ | 18 | 44 | 37 | 75 | 28 | 44 | 20 | 14 | 14 | 75 | 182 | 180 | 149 | 70 | 83 | 49 | 28 | 52 | 38 | 25 | 8 | 10 | 19 | 12 |
| MEA | 48 | 55 | 29 | 40 | 11 | 74 | 10 | 4 | 14 | 99 | 55 | 23 | 20 | 11 | 18 | 12 | 7 | 9 | 22 | 14 | 15 | 35 | 14 | 39 |
| 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 | 108 | 304 | 130 | 129 | 91 | 188 | 24 | 27 | 56 | 39 | 93 | 25 | 21 | 16 | 16 | 72 | 44 | 61 | 57 | 66 | 97 | 21 | 194 | 153 |
| NCK | 7 | 8 | 7 | 5 | 6 | 6 | 5 | 6 | 11 | 8 | 15 | 8 | 7 | 5 | 17 | 14 | 6 | 4 | 5 | 9 | 6 | 5 | 3 | 14 |
| NEW | 14 | 28 | 16 | 19 | 8 | 16 | 11 | 5 | 13 | 21 | 13 | 7 | 11 | 4 | 7 | 4 | 9 | 7 | 16 | 13 | 9 | 16 | 10 | 23 |
| NGK | 8 | 11 | 11 | 8 | 6 | 6 | 7 | 7 | 16 | 16 | 17 | 11 | 13 | 5 | 21 | 22 | 6 | 5 | 12 | 13 | 8 | 6 | 7 | 18 |
| NUR | 9 | 19 | 8 | 14 | 6 | 4 | 7 | 14 | 18 | 22 | 24 | 23 | 33 | 9 | 26 | 17 | 5 | 7 | 23 | 8 | 8 | 5 | 11 | 8 |
| NVS | 5 | 7 | 13 | 3 | 13 | 10 | 12 | 7 | 12 | 15 | 14 | 20 | 4 | 14 | 4 | 7 | 4 | 10 | 7 | 6 | 6 | 5 | 5 | |
| OTT | 7 | 27 | 26 | 7 | 13 | 20 | 4 | 5 | 8 | 21 | 14 | 16 | 9 | 13 | 15 | 10 | 12 | 13 | 15 | 21 | 16 | 16 | 8 | 15 |
| PAF | 7 | 8 | 6 | 17 | 10 | 7 | 9 | 11 | 10 | 22 | 16 | 23 | 10 | 6 | 5 | 5 | 11 | 10 | 27 | 6 | 14 | 6 | 13 | 20 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 15 | 15 | 13 | 9 | 9 | 4 | 6 | 20 | 28 | 3 | 19 | 9 | 3 | 6 | 5 | 3 | 2 | 4 | 5 | 2 | 5 | 4 | 6 |
| PPT | 2 | 7 | 4 | 3 | 6 | 16 | 3 | 2 | 3 | 6 | 12 | 7 | 4 | 1 | 9 | 2 | 3 | 2 | 4 | 7 | 4 | 2 | 8 | 5 |
| PST | ||||||||||||||||||||||||
| QSB | 10 | 10 | 8 | 4 | 12 | 5 | 5 | 11 | 5 | 10 | 10 | 6 | 8 | 9 | 22 | 11 | 7 | 5 | 4 | 9 | 5 | 5 | 4 | 15 |
| RES | 28 | 75 | 32 | 65 | 19 | 43 | 53 | 32 | 46 | 38 | 80 | 105 | 29 | 27 | 79 | 24 | 74 | 38 | 74 | 49 | 36 | 66 | 41 | 47 |
| SBA | 29 | 80 | 32 | 53 | 34 | 40 | 37 | 26 | 26 | 55 | 96 | 77 | 39 | 31 | 79 | 45 | 26 | 35 | 63 | 24 | 31 | 45 | 22 | 30 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 13 | 47 | 20 | 31 | 14 | 50 | 13 | 7 | 13 | 37 | 19 | 13 | 22 | 7 | 12 | 13 | 6 | 13 | 15 | 15 | 6 | 12 | 10 | 24 |
| SJG | 2 | 14 | 6 | 4 | 5 | 12 | 2 | 2 | 3 | 6 | 3 | 6 | 13 | 9 | 3 | 4 | 7 | 13 | 10 | 3 | 3 | 3 | 3 | 7 |
| SOD | 87 | 55 | 30 | 48 | 14 | 23 | 14 | 22 | 25 | 25 | 40 | 32 | 59 | 18 | 41 | 27 | 12 | 26 | 64 | 52 | 45 | 30 | 46 | 79 |
| SPT | 7 | 9 | 7 | 4 | 6 | 9 | 6 | 2 | 11 | 8 | 14 | 10 | 11 | 3 | 17 | 7 | 13 | 6 | 5 | 9 | 6 | 5 | 4 | 16 |
| STJ | 6 | 25 | 18 | 6 | 12 | 18 | 3 | 4 | 9 | 10 | 13 | 22 | 7 | 9 | 8 | 21 | 16 | 16 | 13 | 22 | 16 | 9 | 7 | 12 |
| SUA | 10 | 10 | 9 | 4 | 8 | 4 | 4 | 5 | 7 | 8 | 19 | 5 | 9 | 5 | 21 | 11 | 7 | 5 | 5 | 9 | 5 | 5 | 3 | 13 |
| TAM | 5 | 9 | 4 | 3 | 5 | 7 | 4 | 6 | 5 | 5 | 12 | 3 | 6 | 10 | 23 | 5 | 14 | 5 | 6 | 6 | 7 | 5 | 6 | 15 |
| TAN | 4 | 4 | 4 | 9 | 4 | 5 | 7 | 10 | 14 | 22 | 3 | 4 | 4 | 5 | 9 | 7 | 6 | 3 | 4 | 4 | 8 | 5 | 4 | 11 |
| TDC | ||||||||||||||||||||||||
| THL | 33 | 64 | 16 | 46 | 25 | 73 | 28 | 44 | 49 | 29 | 42 | 98 | 50 | 36 | 50 | 62 | 43 | 37 | 65 | 49 | 34 | 45 | 67 | 76 |
| THY | 8 | 10 | 8 | 6 | 7 | 6 | 6 | 6 | 12 | 9 | 17 | 9 | 8 | 7 | 20 | 16 | 7 | 5 | 5 | 9 | 6 | 5 | 4 | 16 |
| TRW | 2 | 20 | 13 | 5 | 4 | 16 | 5 | 3 | 3 | 5 | 5 | 7 | 4 | 5 | 14 | 5 | 4 | 4 | 4 | 5 | 5 | 8 | 8 | 10 |
| TSU | 3 | 8 | 3 | 3 | 4 | 11 | 9 | 5 | 13 | 17 | 4 | 10 | 6 | 7 | 13 | 8 | 3 | 3 | 7 | 6 | 8 | 5 | 7 | 15 |
| TUC | 4 | 11 | 8 | 8 | 5 | 18 | 7 | 4 | 8 | 9 | 12 | 7 | 11 | 3 | 6 | 3 | 6 | 4 | 9 | 4 | 8 | 7 | 5 | 5 |
| UPS | 5 | 17 | 7 | 13 | 5 | 4 | 5 | 10 | 16 | 21 | 16 | 22 | 27 | 9 | 24 | 22 | 6 | 6 | 23 | 8 | 10 | 6 | 11 | 10 |
| VAL | 5 | 8 | 13 | 6 | 8 | 8 | 6 | 3 | 14 | 14 | 7 | 3 | 17 | 4 | 15 | 25 | 7 | 7 | 12 | 12 | 8 | 5 | 6 | 17 |
| VIC | 10 | 26 | 14 | 19 | 9 | 16 | 10 | 5 | 14 | 11 | 18 | 6 | 10 | 3 | 4 | 3 | 10 | 7 | 10 | 13 | 6 | 13 | 8 | 17 |
| VSS | 3 | 17 | 5 | 4 | 4 | 14 | 1 | 2 | 4 | 3 | 13 | 4 | 16 | 5 | 13 | 12 | 17 | 15 | 6 | 4 | 4 | 7 | 9 | 12 |
| WNG | 8 | 16 | 14 | 9 | 8 | 6 | 8 | 8 | 16 | 21 | 18 | 13 | 18 | 7 | 24 | 26 | 6 | 6 | 16 | 14 | 10 | 7 | 9 | 21 |
| YKC | 89 | 130 | 59 | 106 | 112 | 258 | 95 | 23 | 355 | 257 | 440 | 94 | 52 | 100 | 108 | 102 | 70 | 39 | 61 | 58 | 32 | 70 | 62 | 38 |
- Date modified: