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 | 1 | 1 | 1 | 2 | 5 | 4 | 5 | 7 | 7 | 12 | 3 | 4 | 5 | 2 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 2 |
| ABG | 6 | 4 | 5 | 17 | 4 | |||||||||||||||||||
| ABK | 15 | 9 | 17 | 19 | 16 | 19 | 10 | 11 | 15 | 34 | 36 | 15 | 85 | 144 | 55 | 210 | 265 | 16 | 11 | 13 | 131 | 187 | 67 | 86 |
| AIA | 2 | 4 | 6 | 9 | 6 | 5 | 4 | 3 | 19 | 12 | 12 | 10 | 14 | 9 | 5 | 5 | 7 | 5 | 4 | 5 | 4 | 9 | 14 | 3 |
| AMS | 1 | 3 | 2 | 5 | 5 | 5 | 6 | 9 | 5 | 8 | 8 | 5 | 14 | 12 | 9 | 9 | 14 | 3 | 6 | 3 | 7 | 14 | 15 | 3 |
| API | ||||||||||||||||||||||||
| AQU | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 7 | 12 | 5 | 1 | 2 | 3 | 13 | 6 | 10 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 3 | 4 | 1 | 2 | 4 | 2 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 |
| ASP | 6 | 6 | 11 | 3 | 3 | 4 | 5 | 6 | 3 | 2 | 1 | 1 | 3 | 6 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 3 |
| BDV | 1 | 1 | 1 | 2 | 1 | 2 | 3 | 8 | 7 | 10 | 10 | 4 | 19 | 19 | 7 | 11 | 10 | 4 | 1 | 1 | 4 | 3 | 2 | 1 |
| BEL | 2 | 3 | 3 | 3 | 3 | 3 | 3 | 7 | 17 | 10 | 2 | 7 | 19 | 22 | 6 | 13 | 17 | 9 | 3 | 2 | 3 | 12 | 4 | 4 |
| BFE | 2 | 4 | 6 | 6 | 5 | 4 | 2 | 5 | 19 | 10 | 5 | 5 | 26 | 27 | 13 | 19 | 19 | 16 | 8 | 2 | 7 | 29 | 7 | 8 |
| BFO | ||||||||||||||||||||||||
| BLC | 16 | 35 | 21 | 50 | 10 | 122 | 106 | 17 | 170 | 194 | 195 | 53 | 82 | 342 | 252 | 196 | 174 | 43 | 55 | 40 | 189 | 108 | 121 | 74 |
| BMT | 1 | 3 | 3 | 6 | 4 | 4 | 2 | 4 | 2 | 1 | 2 | 1 | 2 | 2 | 3 | 1 | 0 | 1 | 1 | 1 | 1 | 3 | 4 | 1 |
| BNG | 1 | 1 | 1 | 2 | 3 | 9 | 3 | 9 | 14 | 12 | 5 | 3 | 8 | 8 | 3 | 2 | 6 | 2 | 1 | 2 | 1 | 1 | 2 | 2 |
| BOU | 4 | 3 | 3 | 3 | 1 | 6 | 3 | 1 | 14 | 9 | 7 | 5 | 9 | 7 | 3 | 4 | 4 | 4 | 2 | 2 | 8 | 7 | 6 | 4 |
| BOX | 1 | 3 | 2 | 4 | 2 | 2 | 7 | 7 | 5 | 6 | 4 | 14 | 31 | 26 | 6 | 17 | 39 | 15 | 5 | 5 | 12 | 29 | 7 | 15 |
| BRW | 10 | 15 | 20 | 21 | 24 | 53 | 20 | 8 | 65 | 128 | 78 | 37 | 199 | 189 | 135 | 55 | 179 | 160 | 45 | 53 | 28 | 65 | 52 | 31 |
| BSL | 3 | 3 | 4 | 5 | 5 | 3 | 2 | 1 | 7 | 11 | 6 | 15 | 26 | 4 | 4 | 8 | 6 | 6 | 5 | 7 | 7 | 3 | 15 | 3 |
| CBB | 22 | 32 | 39 | 38 | 16 | 35 | 40 | 21 | 110 | 86 | 85 | 26 | 92 | 327 | 60 | 60 | 280 | 112 | 154 | 138 | 139 | 108 | 162 | 130 |
| CLF | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 8 | 5 | 12 | 12 | 10 | 18 | 10 | 12 | 6 | 3 | 1 | 1 | 1 | 2 | 3 | 1 |
| CMO | 8 | 20 | 27 | 32 | 29 | 48 | 60 | 18 | 152 | 346 | 65 | 41 | 320 | 244 | 372 | 291 | 139 | 132 | 19 | 26 | 41 | 35 | 39 | 29 |
| CNB | 4 | 3 | 2 | 6 | 5 | 2 | 4 | 4 | 6 | 7 | 8 | 4 | 14 | 14 | 4 | 1 | 7 | 2 | 6 | 4 | 3 | 8 | 12 | 2 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 9 | 8 | 3 | 2 | 5 | 4 | 3 | 2 | 4 | 3 | 0 | 1 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 8 |
| CZT | 3 | 2 | 4 | 4 | 5 | 7 | 6 | 4 | 7 | 8 | 4 | 7 | 12 | 5 | 8 | 9 | 13 | 3 | 3 | 3 | 16 | 16 | 12 | 9 |
| DLR | 1 | 4 | 3 | 4 | 4 | 5 | 2 | 3 | 6 | 7 | 2 | 9 | 11 | 3 | 2 | 12 | 3 | 3 | 4 | 5 | 7 | 3 | 10 | 5 |
| DOU | 1 | 2 | 4 | 4 | 4 | 4 | 3 | 4 | 6 | 8 | 14 | 9 | 12 | 22 | 7 | 13 | 8 | 5 | 2 | 3 | 6 | 10 | 5 | 2 |
| DRV | 62 | 116 | 178 | 249 | 98 | 54 | 40 | 25 | 48 | 36 | 26 | 30 | 238 | 181 | 83 | 32 | 96 | 33 | 43 | 38 | 54 | 70 | 97 | 69 |
| EBR | 4 | 4 | 4 | 5 | 7 | 9 | 4 | 6 | 17 | 5 | 5 | 3 | 14 | 16 | 13 | 14 | 21 | 7 | 6 | 5 | 9 | 10 | 9 | 7 |
| ESK | 1 | 1 | 2 | 3 | 3 | 3 | 1 | 3 | 3 | 9 | 7 | 6 | 11 | 19 | 18 | 9 | 12 | 11 | 8 | 3 | 2 | 4 | 8 | 4 |
| EUA | ||||||||||||||||||||||||
| EYR | 2 | 4 | 4 | 8 | 4 | 3 | 2 | 3 | 12 | 24 | 6 | 8 | 13 | 7 | 12 | 5 | 5 | 7 | 4 | 8 | 4 | 6 | 4 | 4 |
| FCC | 12 | 20 | 40 | 89 | 124 | 230 | 108 | 50 | 295 | 411 | 273 | 52 | 243 | 535 | 466 | 97 | 43 | 35 | 38 | 31 | 30 | 56 | 30 | 35 |
| FRD | 1 | 2 | 1 | 2 | 2 | 5 | 2 | 2 | 2 | 11 | 4 | 5 | 2 | 5 | 2 | 2 | 5 | 2 | 5 | 5 | 9 | 7 | 4 | 4 |
| FRN | 6 | 8 | 2 | 3 | 1 | 2 | 2 | 0 | 2 | 7 | 1 | 3 | 6 | 4 | 3 | 3 | 2 | 3 | 6 | 3 | 4 | 3 | 9 | 11 |
| FUR | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 6 | 9 | 10 | 8 | 3 | 17 | 19 | 7 | 11 | 8 | 4 | 1 | 1 | 2 | 2 | 2 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 50 | 23 | 23 | 22 | 35 | 30 | 24 | 158 | 89 | 67 | 122 | 152 | 321 | 113 | 401 | 205 | 216 | 184 | 96 | 54 | 35 | 61 | 70 | 74 |
| GNA | 5 | 6 | 14 | 21 | 19 | 10 | 11 | 8 | 22 | 18 | 5 | 4 | 60 | 29 | 13 | 12 | 33 | 8 | 8 | 8 | 6 | 16 | 20 | 8 |
| GUA | 5 | 7 | 4 | 5 | 4 | 4 | 3 | 4 | 4 | 2 | 1 | 0 | 2 | 4 | 2 | 2 | 1 | 1 | 1 | 0 | 2 | 2 | 4 | 6 |
| GUI | 1 | 2 | 2 | 3 | 2 | 2 | 2 | 1 | 3 | 4 | 7 | 3 | 7 | 5 | 4 | 7 | 5 | 2 | 2 | 4 | 2 | 7 | 2 | 2 |
| GZH | 5 | 11 | 10 | 5 | 6 | 3 | 8 | 7 | 2 | 3 | 2 | 3 | 2 | 2 | 5 | 1 | 2 | 1 | 1 | 0 | 1 | 2 | 2 | 1 |
| HAD | 1 | 1 | 2 | 3 | 2 | 3 | 2 | 3 | 6 | 4 | 11 | 17 | 5 | 21 | 16 | 12 | 3 | 3 | 4 | 3 | 5 | 10 | 7 | 3 |
| HBK | 2 | 4 | 3 | 4 | 5 | 8 | 5 | 11 | 5 | 6 | 8 | 4 | 8 | 10 | 10 | 5 | 7 | 5 | 4 | 3 | 4 | 4 | 4 | 4 |
| HER | 3 | 4 | 8 | 4 | 8 | 10 | 4 | 5 | 6 | 12 | 12 | 17 | 35 | 31 | 13 | 9 | 12 | 14 | 3 | 3 | 6 | 9 | 6 | 11 |
| HLP | 2 | 3 | 3 | 4 | 3 | 4 | 3 | 5 | 16 | 9 | 6 | 13 | 24 | 25 | 6 | 18 | 20 | 14 | 4 | 3 | 3 | 16 | 5 | 8 |
| HON | 2 | 2 | 4 | 3 | 3 | 1 | 7 | 6 | 4 | 7 | 16 | 4 | 4 | 4 | ||||||||||
| HRB | 1 | 1 | 1 | 2 | 2 | 2 | 5 | 9 | 7 | 7 | 7 | 7 | 15 | 16 | 6 | 10 | 11 | 4 | 1 | 1 | 2 | 4 | 1 | 1 |
| HRN | 27 | 49 | 64 | 81 | 31 | 104 | 40 | 99 | 154 | 189 | 177 | 91 | 291 | 37 | 78 | 73 | 165 | 94 | 27 | 40 | 47 | 252 | 179 | 101 |
| HUA | 1 | 2 | 3 | 3 | 3 | 3 | 1 | 2 | 4 | 2 | 2 | 4 | 8 | 6 | 3 | 6 | 10 | 5 | 4 | 2 | 3 | 4 | 1 | 3 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 15 | 49 | 16 | 32 | 34 | 25 | 27 | 64 | 56 | 183 | 199 | 114 | 193 | 114 | 361 | 179 | 62 | 93 | 83 | 65 | 176 | 35 | 48 | 27 |
| IRT | 6 | 1 | 2 | 9 | 2 | 2 | 1 | 12 | 6 | 7 | 4 | 4 | 4 | 9 | 5 | 5 | 2 | 1 | 3 | 1 | 0 | 8 | 2 | 4 |
| IZN | ||||||||||||||||||||||||
| KAK | 8 | 5 | 10 | 7 | 10 | 3 | 5 | 7 | 12 | 12 | 13 | 5 | 10 | 13 | 13 | 5 | 3 | 3 | 2 | 2 | 5 | 5 | 7 | 9 |
| KDU | 10 | 18 | 3 | 3 | 5 | 2 | 3 | 3 | 3 | 6 | 7 | 2 | 5 | 8 | 7 | 2 | 2 | 1 | 1 | 2 | 2 | 2 | 7 | 3 |
| KMH | ||||||||||||||||||||||||
| KNY | 9 | 8 | 7 | 4 | 10 | 8 | 8 | 4 | 15 | 7 | 14 | 6 | 7 | 10 | 11 | 4 | 2 | 3 | 1 | 1 | 2 | 2 | 3 | 9 |
| KOU | 0 | 14 | 15 | 7 | 5 | 2 | 7 | 8 | 3 | 5 | ||||||||||||||
| LER | 3 | 3 | 7 | 7 | 7 | 7 | 3 | 5 | 12 | 16 | 7 | 4 | 20 | 37 | 31 | 20 | 48 | 35 | 16 | 9 | 7 | 15 | 16 | 6 |
| LRM | 7 | 9 | 22 | 27 | 4 | 5 | 10 | 9 | 9 | 28 | 14 | 5 | 19 | 30 | 19 | 11 | 15 | 3 | 4 | 5 | 5 | 5 | 14 | 11 |
| LVV | 3 | 4 | 6 | 5 | 7 | 7 | 6 | 9 | 15 | 9 | 6 | 9 | 12 | 17 | 9 | 13 | 11 | 11 | 4 | 5 | 6 | 16 | 8 | 4 |
| LYC | ||||||||||||||||||||||||
| LZH | 3 | 6 | 3 | 4 | 2 | 3 | 3 | 3 | 4 | 9 | 3 | 2 | 2 | 3 | 4 | 2 | 3 | 2 | 1 | 1 | 1 | 2 | 3 | 3 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 2 | 1 | 3 | 1 | 2 | 6 | 9 | 10 | 6 | 2 | 7 | 14 | 5 | 12 | 3 | 11 | 3 | 2 | 2 | 3 | 6 | 2 | 2 |
| MCQ | 6 | 16 | 14 | 29 | 24 | 24 | 21 | 10 | 158 | 108 | 100 | 43 | 208 | 187 | 192 | 205 | 58 | 25 | 26 | 7 | 20 | 26 | 44 | 18 |
| MEA | 6 | 17 | 16 | 20 | 10 | 70 | 42 | 13 | 413 | 312 | 188 | 19 | 238 | 117 | 105 | 52 | 79 | 20 | 9 | 11 | 15 | 11 | 30 | 29 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 1 | 3 | 5 | 3 | 1 | 4 | 2 | 4 | 4 | 1 | 1 | 8 | 7 | 4 | 2 | 2 | 2 | 1 | 1 | 2 | 4 | 10 | 5 |
| NAQ | 33 | 62 | 129 | 77 | 119 | 64 | 36 | 50 | 84 | 65 | 103 | 32 | 21 | 83 | 80 | 50 | 79 | 60 | 42 | 33 | 25 | 127 | 47 | 203 |
| NCK | 1 | 1 | 1 | 2 | 1 | 1 | 3 | 7 | 7 | 7 | 8 | 7 | 13 | 15 | 5 | 10 | 8 | 3 | 1 | 1 | 3 | 3 | 2 | 2 |
| NEW | ||||||||||||||||||||||||
| NGK | 1 | 2 | 4 | 3 | 1 | 5 | 2 | 7 | 7 | 17 | 10 | 5 | 25 | 23 | 8 | 13 | 23 | 9 | 3 | 3 | 8 | 9 | 4 | 3 |
| NUR | 1 | 3 | 4 | 3 | 3 | 6 | 5 | 10 | 9 | 6 | 8 | 15 | 36 | 34 | 12 | 49 | 79 | 25 | 5 | 8 | 20 | 39 | 10 | 23 |
| NVS | 2 | 3 | 6 | 7 | 6 | 11 | 10 | 9 | 14 | 9 | 4 | 7 | 22 | 9 | 9 | 8 | 4 | 8 | 4 | 5 | 5 | 15 | 5 | 9 |
| OTT | 3 | 2 | 4 | 9 | 3 | 10 | 9 | 5 | 10 | 32 | 20 | 4 | 7 | 6 | 6 | 5 | 11 | 7 | 6 | 6 | 16 | 15 | 13 | 9 |
| PAF | 1 | 2 | 4 | 4 | 4 | 4 | 3 | 4 | 3 | 6 | 4 | 5 | 16 | 43 | 11 | 28 | 29 | 28 | 15 | 9 | 18 | 27 | 5 | 11 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 9 | 11 | 8 | 8 | 12 | 7 | 6 | 4 | 4 | 10 | 3 | 2 | 5 | 6 | 7 | 3 | 5 | 4 | 2 | 3 | 3 | 5 | 3 | 2 |
| PPT | 4 | 2 | 8 | 3 | 4 | 6 | 1 | 2 | 10 | 7 | 3 | 4 | 4 | 4 | 4 | 1 | 6 | 10 | 3 | 5 | 13 | 14 | 5 | 4 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 1 | 1 | 4 | 2 | 4 | 8 | 13 | 5 | 6 | 3 | 7 | 10 | 9 | 3 | 4 | 10 | 2 | 2 | 1 | 2 | 3 | 3 | 3 |
| RES | 40 | 52 | 24 | 21 | 34 | 18 | 15 | 11 | 46 | 35 | 36 | 60 | 89 | 48 | 38 | 44 | 121 | 173 | 187 | 99 | 63 | 28 | 33 | 49 |
| SBA | 38 | 31 | 21 | 18 | 27 | 27 | 12 | 18 | 14 | 97 | 60 | 43 | 43 | 148 | 77 | 41 | 83 | 19 | 40 | 45 | 55 | 34 | 50 | 44 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 2 | 17 | 14 | 15 | 9 | 14 | 7 | 5 | 48 | 95 | 74 | 13 | 232 | 78 | 105 | 41 | 98 | 39 | 13 | 8 | 11 | 14 | 15 | 11 |
| SJG | 1 | 2 | 1 | 2 | 1 | 3 | 3 | 1 | 4 | 3 | 5 | 4 | 6 | 2 | 6 | 3 | 1 | 3 | 4 | 5 | 2 | 2 | 6 | 4 |
| SOD | 9 | 7 | 11 | 11 | 11 | 12 | 6 | 10 | 9 | 30 | 23 | 12 | 92 | 67 | 47 | 113 | 103 | 39 | 10 | 26 | 157 | 95 | 124 | 54 |
| SPT | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 6 | 6 | 5 | 3 | 12 | 4 | 3 | 3 | 3 | 1 | 1 | 1 | 4 | 3 | 1 |
| STJ | 6 | 9 | 9 | 30 | 16 | 16 | 9 | 11 | 15 | 26 | 6 | 22 | 19 | 31 | 17 | 18 | 19 | 25 | 13 | 12 | 24 | 21 | 18 | 15 |
| SUA | ||||||||||||||||||||||||
| TAM | 1 | 1 | 1 | 2 | 1 | 3 | 4 | 7 | 6 | 2 | 4 | 1 | 4 | 2 | 3 | 3 | 4 | 4 | 1 | 2 | 1 | 1 | 1 | 1 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 18 | 29 | 33 | 19 | 22 | 18 | 19 | 52 | 64 | 44 | 20 | 128 | 167 | 20 | 50 | 60 | 164 | 60 | 131 | 57 | 26 | 42 | 28 | 18 |
| THY | 1 | 1 | 1 | 2 | 1 | 1 | 3 | 7 | 7 | 8 | 6 | 6 | 15 | 14 | 6 | 10 | 10 | 3 | 1 | 1 | 3 | 2 | 1 | 1 |
| TRW | 1 | 2 | 2 | 2 | 2 | 3 | 1 | 1 | 4 | 3 | 1 | 1 | 4 | 2 | 3 | 8 | 2 | 2 | 5 | 4 | 4 | 4 | 2 | 3 |
| TSU | 1 | 2 | 1 | 1 | 4 | 3 | 1 | 4 | 4 | 16 | 4 | 5 | 4 | 7 | 8 | 7 | 6 | 3 | 1 | 1 | 1 | 3 | 2 | 4 |
| TUC | 5 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 3 | 2 | 2 | 3 | 7 | 6 | 6 | 2 | 3 | 2 | 3 | 8 | 3 |
| UPS | 2 | 3 | 2 | 3 | 1 | 6 | 1 | 8 | 6 | 8 | 6 | 12 | 31 | 40 | 8 | 40 | 64 | 26 | 7 | 6 | 15 | 27 | 8 | 17 |
| VAL | 2 | 4 | 7 | 9 | 4 | 7 | 3 | 5 | 5 | 11 | 7 | 24 | 10 | 8 | 28 | 6 | 12 | 5 | 4 | 3 | 12 | 24 | 12 | 5 |
| VIC | 4 | 13 | 10 | 6 | 3 | 6 | 3 | 3 | 14 | 35 | 24 | 10 | 41 | 28 | 14 | 12 | 10 | 12 | 8 | 8 | 6 | 4 | 13 | 3 |
| VSS | 1 | 3 | 2 | 3 | 3 | 3 | 2 | 1 | 7 | 4 | 2 | 11 | 5 | 8 | 5 | 8 | 4 | 7 | 3 | 9 | 4 | 6 | 2 | 5 |
| WNG | 2 | 2 | 3 | 4 | 2 | 3 | 2 | 3 | 14 | 14 | 2 | 2 | 21 | 26 | 11 | 7 | 8 | 11 | 7 | 1 | 5 | 21 | 5 | 5 |
| YKC | 13 | 15 | 16 | 63 | 61 | 143 | 91 | 43 | 334 | 461 | 156 | 37 | 326 | 619 | 667 | 460 | 400 | 115 | 31 | 30 | 40 | 63 | 32 | 26 |
- Date modified: