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 | 10 | 4 | 8 | 27 | 47 | 21 | 15 | 22 | 25 | 7 | 20 | 16 | 21 | 12 | 9 | 10 | 24 | 9 | 9 | 3 | 28 | 11 |
| ABG | 7 | 7 | 7 | 10 | 18 | 11 | 9 | 12 | 9 | 9 | 12 | 6 | 10 | 7 | 15 | 10 | 10 | 13 | 13 | 5 | 8 | 9 | 19 | 9 |
| ABK | 142 | 172 | 123 | 246 | 62 | 41 | 52 | 37 | 37 | 34 | 77 | 58 | 76 | 82 | 128 | 105 | 73 | 49 | 477 | 101 | 109 | 87 | 420 | 229 |
| AIA | 6 | 10 | 23 | 21 | 25 | 24 | 17 | 21 | 21 | 7 | 13 | 8 | 11 | 5 | 24 | 6 | 21 | 4 | 16 | 7 | 8 | 8 | 20 | 15 |
| AMS | 8 | 7 | 9 | 4 | 4 | 20 | 7 | 7 | 6 | 11 | 12 | 10 | 12 | 15 | 13 | 19 | 10 | 14 | 25 | 7 | 13 | 5 | 17 | 5 |
| API | 4 | 6 | 14 | 16 | 5 | 21 | 13 | 23 | 6 | 5 | 7 | 4 | 2 | 6 | 7 | 6 | 9 | 3 | 3 | 8 | 3 | 12 | 5 | 3 |
| AQU | 10 | 6 | 10 | 6 | 6 | 23 | 11 | 11 | 10 | 9 | 9 | 13 | 12 | 11 | 18 | 5 | 11 | 10 | 36 | 10 | 6 | 5 | 25 | 17 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 6 | 5 | 5 | 6 | 6 | 8 | 9 | 6 | 5 | 4 | 11 | 5 | 6 | 19 | 14 | 5 | 2 | 13 | 8 | 6 | 5 | 16 | 10 |
| ASP | 8 | 8 | 15 | 5 | 5 | 16 | 11 | 22 | 8 | 9 | 6 | 9 | 16 | 8 | 8 | 8 | 11 | 6 | 7 | 7 | 5 | 8 | 5 | 9 |
| BDV | 11 | 5 | 14 | 8 | 10 | 26 | 13 | 18 | 7 | 8 | 13 | 15 | 11 | 13 | 14 | 7 | 16 | 10 | 46 | 8 | 8 | 7 | 27 | 20 |
| BEL | 11 | 6 | 20 | 12 | 10 | 29 | 11 | 21 | 9 | 12 | 18 | 21 | 14 | 19 | 12 | 5 | 23 | 12 | 54 | 7 | 11 | 10 | 30 | 20 |
| BFE | 10 | 9 | 25 | 13 | 16 | 30 | 11 | 20 | 8 | 10 | 24 | 24 | 18 | 34 | 17 | 8 | 33 | 15 | 77 | 14 | 15 | 14 | 32 | 27 |
| BFO | ||||||||||||||||||||||||
| BLC | 70 | 56 | 357 | 127 | 76 | 193 | 323 | 53 | 67 | 67 | 55 | 40 | 64 | 179 | 116 | 146 | 150 | 135 | 144 | 100 | 88 | 185 | 129 | 59 |
| BMT | 16 | 7 | 7 | 11 | 16 | 13 | 10 | 14 | 6 | 10 | 15 | 13 | 14 | 11 | 5 | 16 | 7 | 11 | 11 | 7 | 4 | 4 | 4 | 5 |
| BNG | 6 | 5 | 4 | 5 | 6 | 11 | 18 | 5 | 16 | 10 | 13 | 2 | 14 | 16 | 23 | 9 | 8 | 7 | 22 | 12 | 9 | 4 | 27 | 14 |
| BOU | 18 | 7 | 25 | 32 | 9 | 37 | 28 | 20 | 11 | 8 | 7 | 4 | 10 | 10 | 17 | 7 | 31 | 7 | 11 | 10 | 10 | 20 | 21 | 7 |
| BOX | 10 | 15 | 19 | 17 | 11 | 28 | 9 | 24 | 13 | 25 | 33 | 36 | 34 | 46 | 24 | 21 | 26 | 17 | 54 | 9 | 10 | 17 | 22 | 17 |
| BRW | 82 | 95 | 144 | 128 | 123 | 554 | 235 | 689 | 316 | 96 | 502 | 631 | 185 | 95 | 338 | 417 | 571 | 249 | 380 | 165 | 112 | 99 | 58 | 102 |
| BSL | 7 | 5 | 21 | 17 | 16 | 32 | 10 | 13 | 6 | 8 | 7 | 4 | 8 | 9 | 5 | 10 | 18 | 8 | 9 | 11 | 11 | 11 | 16 | 5 |
| CBB | 51 | 35 | 54 | 94 | 21 | 81 | 82 | 47 | 37 | 41 | 47 | 29 | 59 | 53 | 85 | 162 | 200 | 185 | 223 | 160 | 236 | 102 | 39 | 56 |
| CLF | 9 | 8 | 11 | 4 | 11 | 24 | 17 | 19 | 8 | 7 | 13 | 16 | 11 | 9 | 17 | 9 | 15 | 11 | 45 | 12 | 9 | 7 | 25 | 21 |
| CMO | 68 | 102 | 154 | 52 | 88 | 497 | 143 | 359 | 268 | 74 | 292 | 139 | 170 | 165 | 317 | 229 | 140 | 74 | 52 | 29 | 33 | 16 | 45 | 52 |
| CNB | 8 | 10 | 21 | 8 | 13 | 19 | 12 | 39 | 18 | 11 | 8 | 9 | 9 | 9 | 11 | 7 | 20 | 7 | 7 | 13 | 9 | 7 | 15 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 8 | 6 | 18 | 12 | 6 | 10 | 14 | 24 | 10 | 9 | 5 | 7 | 11 | 4 | 9 | 6 | 14 | 4 | 6 | 9 | 4 | 7 | 9 | 4 |
| CZT | 11 | 7 | 7 | 8 | 11 | 26 | 5 | 25 | 7 | 17 | 15 | 10 | 9 | 10 | 19 | 7 | 14 | 5 | 50 | 9 | 10 | 7 | 35 | 18 |
| DLR | 7 | 5 | 21 | 22 | 13 | 39 | 17 | 16 | 10 | 8 | 5 | 5 | 8 | 7 | 6 | 8 | 18 | 7 | 9 | 9 | 8 | 7 | 18 | 5 |
| DOU | 10 | 7 | 13 | 4 | 12 | 27 | 17 | 23 | 10 | 8 | 16 | 16 | 14 | 14 | 16 | 11 | 20 | 14 | 52 | 14 | 10 | 8 | 26 | 24 |
| DRV | 66 | 44 | 101 | 83 | 40 | 87 | 38 | 36 | 42 | 29 | 16 | 28 | 40 | 17 | 56 | 45 | 62 | 41 | 24 | 47 | 51 | 45 | 45 | 37 |
| EBR | 8 | 7 | 9 | 6 | 13 | 24 | 16 | 16 | 11 | 16 | 10 | 15 | 5 | 15 | 24 | 14 | 18 | 17 | 36 | 11 | 11 | 8 | 25 | 20 |
| ESK | 10 | 8 | 20 | 6 | 21 | 34 | 25 | 22 | 11 | 12 | 21 | 19 | 17 | 32 | 16 | 16 | 41 | 20 | 79 | 13 | 19 | 13 | 37 | 32 |
| EUA | ||||||||||||||||||||||||
| EYR | 8 | 5 | 14 | 12 | 9 | 57 | 26 | 56 | 19 | 8 | 14 | 9 | 10 | 9 | 13 | 21 | 21 | 9 | 8 | 9 | 7 | 10 | 23 | 9 |
| FCC | 78 | 98 | 491 | 274 | 94 | 252 | 172 | 149 | 207 | 68 | 91 | 130 | 129 | 145 | 73 | 90 | 45 | 49 | 131 | 50 | 69 | 152 | 91 | 89 |
| FRD | 11 | 11 | 21 | 8 | 19 | 10 | 10 | 17 | 17 | 6 | 8 | 3 | 10 | 12 | 17 | 8 | 24 | 4 | 14 | 12 | 14 | 18 | 13 | 11 |
| FRN | 11 | 6 | 15 | 24 | 7 | 46 | 22 | 27 | 12 | 8 | 10 | 4 | 8 | 4 | 10 | 7 | 18 | 10 | 8 | 8 | 9 | 13 | 18 | 8 |
| FUR | 10 | 6 | 13 | 6 | 10 | 24 | 14 | 18 | 8 | 7 | 11 | 15 | 11 | 11 | 16 | 8 | 15 | 10 | 43 | 8 | 8 | 7 | 26 | 20 |
| GCK | ||||||||||||||||||||||||
| GDH | 108 | 112 | 54 | 80 | 75 | 67 | 55 | 42 | 54 | 79 | 118 | 37 | 70 | 63 | 168 | 273 | 157 | 77 | 214 | 76 | 41 | 28 | 300 | 136 |
| GNA | 7 | 11 | 27 | 9 | 13 | 15 | 12 | 18 | 10 | 7 | 8 | 9 | 20 | 17 | 10 | 12 | 8 | 10 | 10 | 8 | 4 | 5 | 4 | 11 |
| GUA | 11 | 7 | 19 | 17 | 9 | 7 | 12 | 16 | 5 | 6 | 4 | 7 | 8 | 4 | 5 | 7 | 8 | 3 | 5 | 5 | 3 | 9 | 11 | 19 |
| GUI | 5 | 8 | 4 | 7 | 7 | 16 | 14 | 14 | 13 | 10 | 3 | 11 | 4 | 6 | 20 | 8 | 4 | 5 | 14 | 16 | 7 | 7 | 19 | 14 |
| GZH | 5 | 9 | 6 | 5 | 12 | 9 | 7 | 9 | 4 | 13 | 11 | 9 | 12 | 7 | 3 | 13 | 5 | 9 | 5 | 5 | 3 | 3 | 6 | 3 |
| HAD | 9 | 7 | 13 | 4 | 15 | 26 | 21 | 21 | 8 | 6 | 16 | 12 | 10 | 15 | 15 | 12 | 22 | 15 | 53 | 11 | 12 | 10 | 28 | 24 |
| HBK | 5 | 8 | 5 | 5 | 9 | 14 | 5 | 13 | 2 | 7 | 14 | 4 | 11 | 7 | 12 | 5 | 11 | 5 | 25 | 10 | 10 | 5 | 28 | 14 |
| HER | 5 | 7 | 5 | 6 | 6 | 10 | 7 | 15 | 6 | 8 | 18 | 3 | 6 | 7 | 10 | 4 | 10 | 3 | 20 | 11 | 7 | 6 | 25 | 12 |
| HLP | 11 | 7 | 21 | 11 | 13 | 29 | 11 | 19 | 10 | 12 | 25 | 24 | 21 | 25 | 17 | 7 | 28 | 13 | 67 | 10 | 13 | 12 | 30 | 22 |
| HON | 6 | 6 | 12 | 12 | 6 | 24 | 14 | 25 | 9 | 5 | 7 | 3 | 2 | 6 | 6 | 7 | 3 | 4 | 4 | 5 | 3 | 5 | 9 | 4 |
| HRB | 11 | 5 | 14 | 8 | 8 | 26 | 12 | 15 | 7 | 10 | 13 | 15 | 11 | 12 | 15 | 6 | 15 | 10 | 44 | 7 | 8 | 7 | 27 | 19 |
| HRN | 24 | 69 | 58 | 63 | 134 | 165 | 289 | 189 | 102 | 82 | 88 | 89 | 77 | 37 | 214 | 65 | 66 | 64 | 203 | 218 | 43 | 36 | 236 | 231 |
| HUA | 5 | 6 | 16 | 8 | 19 | 28 | 9 | 8 | 12 | 4 | 5 | 10 | 17 | 57 | 29 | 23 | 56 | 17 | 24 | 28 | 27 | 9 | 9 | 8 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 144 | 158 | 312 | 225 | 132 | 132 | 184 | 74 | 90 | 186 | 117 | 83 | 141 | 108 | 50 | 188 | 141 | 206 | 128 | 102 | 89 | 77 | 448 | 136 |
| IRT | 9 | 24 | 28 | 9 | 17 | 16 | 28 | 26 | 11 | 11 | 20 | 17 | 13 | 19 | 7 | 17 | 10 | 15 | 22 | 14 | 4 | 3 | 6 | 6 |
| IZN | ||||||||||||||||||||||||
| KAK | 9 | 11 | 4 | 4 | 14 | 10 | 8 | 11 | 7 | 6 | 7 | 9 | 9 | 3 | 5 | 11 | 9 | 4 | 6 | 6 | 4 | 6 | 10 | 4 |
| KDU | 10 | 11 | 16 | 17 | 6 | 11 | 13 | 16 | 7 | 8 | 5 | 7 | 13 | 5 | 6 | 9 | 9 | 5 | 5 | 6 | 3 | 8 | 3 | 8 |
| KMH | ||||||||||||||||||||||||
| KNY | 8 | 16 | 5 | 4 | 8 | 9 | 9 | 11 | 7 | 7 | 7 | 9 | 10 | 4 | 4 | 11 | 8 | 6 | 7 | 6 | 3 | 6 | 5 | 5 |
| KOU | 4 | 6 | 10 | 3 | 14 | 8 | 4 | 8 | 10 | 8 | 4 | 14 | 11 | 12 | 11 | 11 | 6 | 9 | 6 | 14 | 5 | 5 | 6 | 7 |
| LER | 10 | 12 | 24 | 14 | 33 | 26 | 13 | 12 | 10 | 15 | 23 | 21 | 17 | 43 | 15 | 13 | 43 | 15 | 73 | 14 | 20 | 12 | 29 | 33 |
| LRM | 10 | 10 | 20 | 7 | 6 | 11 | 13 | 12 | 8 | 9 | 8 | 8 | 19 | 15 | 9 | 11 | 9 | 11 | 9 | 8 | 5 | 5 | 5 | 12 |
| LVV | 10 | 6 | 16 | 11 | 8 | 26 | 11 | 16 | 6 | 12 | 14 | 17 | 15 | 15 | 13 | 4 | 18 | 11 | 42 | 7 | 9 | 9 | 27 | 15 |
| LYC | ||||||||||||||||||||||||
| LZH | 14 | 5 | 10 | 7 | 15 | 11 | 8 | 11 | 5 | 9 | 15 | 9 | 13 | 10 | 4 | 15 | 5 | 12 | 8 | 5 | 4 | 4 | 9 | 5 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 7 | 4 | 6 | 7 | 12 | 11 | 9 | 18 | 20 | 9 | 8 | 12 | 9 | 15 | 8 | 5 | 6 | 9 | 10 | 6 | 5 | 18 | 12 |
| MCQ | 27 | 33 | 41 | 48 | 37 | 214 | 77 | 131 | 75 | 27 | 157 | 99 | 172 | 104 | 171 | 227 | 118 | 44 | 40 | 45 | 25 | 22 | 29 | 33 |
| MEA | 43 | 44 | 54 | 52 | 27 | 416 | 102 | 213 | 139 | 27 | 62 | 23 | 24 | 54 | 40 | 33 | 34 | 12 | 33 | 25 | 20 | 51 | 40 | 30 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 8 | 6 | 5 | 7 | 17 | 14 | 11 | 19 | 10 | 8 | 9 | 12 | 12 | 5 | 6 | 15 | 10 | 6 | 9 | 8 | 6 | 10 | 13 | 5 |
| NAQ | 120 | 138 | 293 | 161 | 95 | 131 | 126 | 236 | 112 | 54 | 30 | 35 | 25 | 50 | 30 | 120 | 113 | 53 | 169 | 74 | 83 | 90 | 258 | 101 |
| NCK | 9 | 5 | 13 | 7 | 8 | 25 | 12 | 15 | 7 | 9 | 12 | 14 | 11 | 12 | 15 | 6 | 14 | 10 | 40 | 7 | 7 | 7 | 24 | 17 |
| NEW | 28 | 21 | 29 | 41 | 13 | 49 | 30 | 25 | 15 | 9 | 11 | 5 | 13 | 14 | 14 | 9 | 24 | 15 | 17 | 17 | 15 | 31 | 19 | 16 |
| NGK | 10 | 6 | 20 | 10 | 14 | 28 | 13 | 20 | 10 | 9 | 21 | 18 | 13 | 18 | 13 | 7 | 25 | 12 | 60 | 7 | 12 | 9 | 31 | 23 |
| NUR | 11 | 17 | 25 | 22 | 13 | 27 | 10 | 21 | 10 | 16 | 32 | 36 | 30 | 51 | 28 | 18 | 33 | 13 | 73 | 15 | 12 | 21 | 21 | 23 |
| NVS | 8 | 13 | 21 | 11 | 5 | 12 | 26 | 16 | 10 | 17 | 21 | 20 | 7 | 19 | 7 | 23 | 10 | 16 | 17 | 9 | 7 | 6 | 8 | 8 |
| OTT | 19 | 15 | 39 | 28 | 17 | 34 | 30 | 35 | 34 | 6 | 14 | 4 | 14 | 17 | 23 | 14 | 32 | 12 | 22 | 16 | 23 | 33 | 20 | 21 |
| PAF | 12 | 11 | 14 | 12 | 10 | 25 | 11 | 19 | 14 | 21 | 20 | 16 | 22 | 23 | 28 | 17 | 21 | 9 | 69 | 16 | 22 | 16 | 24 | 21 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 7 | 11 | 8 | 5 | 15 | 10 | 5 | 9 | 4 | 12 | 13 | 9 | 12 | 9 | 3 | 15 | 5 | 10 | 5 | 4 | 4 | 4 | 10 | 3 |
| PPT | 4 | 5 | 3 | 12 | 7 | 28 | 15 | 20 | 5 | 4 | 8 | 3 | 3 | 7 | 4 | 7 | 4 | 2 | 5 | 7 | 4 | 3 | 14 | 2 |
| PST | ||||||||||||||||||||||||
| QSB | 10 | 6 | 12 | 5 | 6 | 22 | 20 | 8 | 25 | 13 | 15 | 5 | 13 | 17 | 23 | 9 | 16 | 15 | 35 | 9 | 9 | 6 | 32 | 17 |
| RES | 37 | 39 | 92 | 48 | 28 | 76 | 28 | 36 | 41 | 56 | 92 | 57 | 93 | 132 | 40 | 104 | 76 | 104 | 133 | 98 | 80 | 80 | 58 | 55 |
| SBA | 58 | 63 | 115 | 86 | 52 | 121 | 43 | 135 | 72 | 29 | 37 | 27 | 31 | 72 | 60 | 62 | 68 | 51 | 38 | 30 | 44 | 41 | 64 | 59 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 26 | 44 | 42 | 34 | 19 | 77 | 48 | 75 | 42 | 8 | 26 | 10 | 22 | 29 | 34 | 45 | 15 | 15 | 21 | 19 | 18 | 10 | 12 | 23 |
| SJG | 4 | 5 | 10 | 3 | 14 | 9 | 2 | 7 | 8 | 4 | 4 | 5 | 3 | 7 | 8 | 6 | 4 | 2 | 3 | 10 | 5 | 3 | 5 | 4 |
| SOD | 208 | 127 | 82 | 109 | 40 | 21 | 38 | 36 | 27 | 37 | 66 | 52 | 68 | 69 | 104 | 78 | 72 | 44 | 366 | 82 | 57 | 120 | 233 | 219 |
| SPT | 8 | 8 | 8 | 5 | 6 | 23 | 17 | 18 | 12 | 8 | 11 | 14 | 7 | 9 | 23 | 4 | 8 | 9 | 31 | 13 | 6 | 9 | 24 | 19 |
| STJ | 11 | 21 | 30 | 26 | 15 | 40 | 32 | 22 | 25 | 6 | 12 | 12 | 15 | 10 | 19 | 15 | 18 | 23 | 35 | 17 | 20 | 18 | 22 | 13 |
| SUA | 9 | 7 | 14 | 7 | 10 | 24 | 14 | 9 | 10 | 11 | 10 | 12 | 16 | 11 | 15 | 8 | 14 | 12 | 40 | 7 | 8 | 8 | 27 | 16 |
| TAM | 6 | 8 | 6 | 5 | 5 | 17 | 16 | 6 | 26 | 16 | 9 | 3 | 13 | 15 | 24 | 9 | 6 | 6 | 23 | 11 | 7 | 5 | 25 | 16 |
| TAN | 5 | 5 | 5 | 4 | 6 | 12 | 8 | 4 | 4 | 4 | 11 | 3 | 7 | 9 | 12 | 10 | 9 | 7 | 24 | 6 | 10 | 3 | 25 | 8 |
| TDC | ||||||||||||||||||||||||
| THL | 29 | 43 | 112 | 18 | 46 | 30 | 31 | 47 | 48 | 94 | 117 | 63 | 83 | 114 | 64 | 79 | 115 | 50 | 69 | 33 | 80 | 61 | 36 | 45 |
| THY | 10 | 6 | 14 | 8 | 8 | 27 | 14 | 15 | 7 | 11 | 12 | 15 | 13 | 12 | 17 | 7 | 15 | 11 | 45 | 7 | 8 | 7 | 27 | 19 |
| TRW | 4 | 5 | 15 | 4 | 18 | 23 | 7 | 11 | 14 | 4 | 5 | 6 | 7 | 6 | 13 | 7 | 11 | 3 | 6 | 8 | 5 | 4 | 10 | 9 |
| TSU | 5 | 7 | 5 | 6 | 6 | 11 | 8 | 15 | 3 | 6 | 13 | 3 | 6 | 9 | 14 | 5 | 10 | 5 | 22 | 11 | 9 | 5 | 28 | 15 |
| TUC | 10 | 6 | 19 | 24 | 10 | 40 | 21 | 23 | 12 | 8 | 8 | 5 | 8 | 7 | 14 | 11 | 21 | 5 | 9 | 11 | 6 | 6 | 20 | 7 |
| UPS | 9 | 8 | 25 | 16 | 13 | 27 | 5 | 16 | 8 | 9 | 27 | 30 | 23 | 45 | 23 | 10 | 37 | 11 | 76 | 14 | 12 | 18 | 22 | 19 |
| VAL | 8 | 7 | 12 | 4 | 16 | 28 | 22 | 19 | 7 | 5 | 17 | 10 | 10 | 14 | 10 | 13 | 21 | 16 | 50 | 14 | 11 | 11 | 27 | 23 |
| VIC | 21 | 19 | 29 | 34 | 8 | 60 | 26 | 39 | 16 | 9 | 11 | 4 | 12 | 10 | 11 | 12 | 19 | 11 | 18 | 13 | 13 | 25 | 14 | 15 |
| VSS | 4 | 7 | 11 | 4 | 15 | 13 | 5 | 9 | 11 | 5 | 8 | 9 | 8 | 13 | 13 | 10 | 12 | 7 | 5 | 9 | 7 | 5 | 13 | 10 |
| WNG | 11 | 7 | 24 | 12 | 17 | 30 | 12 | 20 | 8 | 9 | 21 | 21 | 16 | 26 | 15 | 7 | 32 | 14 | 79 | 15 | 15 | 12 | 35 | 29 |
| YKC | 61 | 106 | 107 | 191 | 86 | 415 | 161 | 331 | 223 | 93 | 172 | 106 | 106 | 165 | 255 | 95 | 232 | 109 | 111 | 31 | 40 | 111 | 193 | 99 |
- Date modified: