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 | 3 | 3 | 4 | 6 | 7 | 17 | 8 | 19 | 25 | 31 | 18 | 14 | 16 | 15 | 12 | 8 | 20 | 19 | 17 | 14 | 6 | 7 | 16 | 7 |
| ABG | 7 | 10 | 5 | 16 | 6 | 22 | 13 | 13 | 15 | 8 | 9 | 13 | 13 | 11 | 7 | 12 | 16 | 27 | 21 | 8 | 6 | 9 | 10 | 8 |
| ABK | 238 | 120 | 102 | 141 | 86 | 91 | 44 | 19 | 30 | 36 | 50 | 74 | 50 | 74 | 79 | 63 | 103 | 352 | 71 | 127 | 123 | 66 | 170 | 62 |
| AIA | 9 | 13 | 22 | 15 | 10 | 19 | 17 | 11 | 23 | 26 | 11 | 16 | 7 | 5 | 22 | 10 | 20 | 19 | 20 | 15 | 5 | 5 | 19 | 6 |
| AMS | 7 | 7 | 5 | 12 | 8 | 5 | 6 | 14 | 9 | 10 | 8 | 9 | 8 | 7 | 5 | 5 | 24 | 51 | 22 | 16 | 9 | 11 | 16 | 7 |
| API | 4 | 8 | 6 | 9 | 10 | 8 | 7 | 3 | 10 | 15 | 24 | 6 | 4 | 7 | 4 | 6 | 20 | 11 | 5 | 5 | 6 | 9 | 6 | 9 |
| AQU | 4 | 6 | 4 | 9 | 5 | 5 | 15 | 10 | 9 | 7 | 12 | 11 | 11 | 7 | 8 | 7 | 11 | 26 | 18 | 13 | 7 | 7 | 12 | 9 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 3 | 5 | 16 | 4 | 5 | 8 | 6 | 8 | 12 | 4 | 15 | 3 | 4 | 13 | 17 | 19 | 16 | 5 | 11 | 4 | 3 | 13 | 4 |
| ASP | 2 | 6 | 2 | 13 | 10 | 8 | 9 | 16 | 4 | 14 | 21 | 11 | 5 | 10 | 11 | 15 | 26 | 22 | 20 | 10 | 3 | 10 | 9 | 5 |
| BDV | 8 | 7 | 6 | 8 | 6 | 5 | 15 | 16 | 6 | 11 | 13 | 9 | 14 | 6 | 14 | 16 | 14 | 36 | 25 | 14 | 10 | 9 | 15 | 10 |
| BEL | 16 | 8 | 7 | 7 | 9 | 9 | 17 | 13 | 7 | 11 | 13 | 14 | 13 | 13 | 23 | 25 | 24 | 48 | 33 | 16 | 13 | 14 | 22 | 15 |
| BFE | 19 | 10 | 9 | 10 | 14 | 15 | 21 | 17 | 14 | 13 | 20 | 15 | 16 | 20 | 35 | 35 | 30 | 69 | 39 | 18 | 17 | 16 | 23 | 16 |
| BFO | ||||||||||||||||||||||||
| BLC | 48 | 37 | 28 | 95 | 93 | 86 | 44 | 42 | 131 | 85 | 55 | 66 | 167 | 145 | 166 | 95 | 199 | 352 | 169 | 159 | 107 | 124 | 72 | 54 |
| BMT | 7 | 5 | 3 | 8 | 8 | 24 | 17 | 11 | 9 | 15 | 11 | 9 | 9 | 8 | 14 | 14 | 12 | 26 | 25 | 14 | 5 | 9 | 3 | 13 |
| BNG | 1 | 4 | 3 | 10 | 9 | 4 | 12 | 11 | 14 | 13 | 11 | 4 | 9 | 13 | 11 | 8 | 20 | 11 | 13 | 13 | 5 | 5 | 16 | 5 |
| BOU | 14 | 11 | 5 | 19 | 27 | 14 | 22 | 26 | 26 | 13 | 15 | 13 | 8 | 11 | 22 | 19 | 32 | 37 | 27 | 24 | 15 | 15 | 13 | 11 |
| BOX | 15 | 7 | 8 | 18 | 13 | 15 | 24 | 16 | 13 | 25 | 19 | 26 | 20 | 22 | 41 | 36 | 30 | 50 | 39 | 19 | 17 | 15 | 26 | 19 |
| BRW | 54 | 63 | 86 | 132 | 172 | 208 | 163 | 125 | 199 | 153 | 366 | 300 | 161 | 135 | 126 | 112 | 854 | 706 | 862 | 310 | 129 | 206 | 78 | 119 |
| BSL | 10 | 10 | 12 | 17 | 22 | 11 | 21 | 25 | 16 | 15 | 12 | 12 | 6 | 13 | 12 | 7 | 11 | 24 | 14 | 22 | 12 | 13 | 14 | 9 |
| CBB | 35 | 40 | 54 | 47 | 49 | 46 | 35 | 31 | 45 | 69 | 35 | 64 | 79 | 57 | 95 | 71 | 64 | 508 | 583 | 311 | 183 | 105 | 200 | 62 |
| CLF | 4 | 9 | 5 | 11 | 6 | 6 | 14 | 14 | 8 | 7 | 9 | 8 | 12 | 5 | 10 | 11 | 11 | 36 | 25 | 14 | 9 | 8 | 12 | 9 |
| CMO | 41 | 65 | 56 | 79 | 95 | 119 | 87 | 129 | 176 | 365 | 236 | 193 | 153 | 109 | 156 | 183 | 303 | 206 | 105 | 71 | 31 | 49 | 48 | 56 |
| CNB | 5 | 4 | 4 | 14 | 10 | 15 | 12 | 14 | 8 | 18 | 37 | 26 | 8 | 10 | 15 | 14 | 40 | 47 | 12 | 17 | 5 | 4 | 6 | 4 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 4 | 3 | 16 | 13 | 10 | 10 | 12 | 5 | 17 | 28 | 16 | 5 | 11 | 11 | 14 | 30 | 28 | 15 | 11 | 5 | 12 | 6 | 5 |
| CZT | 14 | 9 | 6 | 10 | 9 | 8 | 12 | 19 | 6 | 6 | 6 | 10 | 5 | 6 | 7 | 9 | 22 | 24 | 15 | 19 | 5 | 12 | 23 | 5 |
| DLR | 10 | 8 | 9 | 16 | 24 | 13 | 21 | 26 | 19 | 15 | 15 | 14 | 7 | 10 | 19 | 12 | 7 | 23 | 10 | 22 | 11 | 11 | 11 | 9 |
| DOU | 4 | 11 | 5 | 11 | 7 | 8 | 15 | 16 | 7 | 8 | 11 | 8 | 16 | 9 | 16 | 16 | 14 | 45 | 30 | 15 | 11 | 10 | 15 | 10 |
| DRV | 19 | 36 | 42 | 72 | 28 | 68 | 45 | 21 | 31 | 42 | 60 | 25 | 30 | 23 | 29 | 25 | 107 | 85 | 122 | 58 | 74 | 51 | 31 | 78 |
| EBR | 3 | 8 | 5 | 13 | 12 | 12 | 13 | 11 | 12 | 5 | 6 | 18 | 9 | 9 | 14 | 8 | 9 | 25 | 21 | 25 | 10 | 8 | 12 | 8 |
| ESK | 5 | 14 | 7 | 15 | 14 | 10 | 18 | 18 | 13 | 10 | 22 | 13 | 21 | 21 | 34 | 31 | 39 | 79 | 51 | 21 | 19 | 16 | 20 | 13 |
| EUA | ||||||||||||||||||||||||
| EYR | 8 | 9 | 13 | 11 | 14 | 12 | 15 | 11 | 16 | 32 | 33 | 27 | 11 | 16 | 7 | 5 | 33 | 25 | 13 | 13 | 12 | 9 | 9 | 9 |
| FCC | 47 | 40 | 137 | 384 | 386 | 121 | 45 | 286 | 188 | 111 | 96 | 182 | 114 | 71 | 81 | 48 | 99 | 124 | 149 | 90 | 94 | 132 | 89 | 30 |
| FRD | 12 | 14 | 15 | 14 | 18 | 11 | 17 | 14 | 10 | 16 | 7 | 9 | 6 | 10 | 13 | 8 | 20 | 23 | 23 | 29 | 15 | 16 | 16 | 9 |
| FRN | 11 | 9 | 3 | 14 | 20 | 15 | 22 | 19 | 20 | 12 | 17 | 9 | 9 | 6 | 12 | 16 | 23 | 23 | 16 | 19 | 10 | 9 | 9 | 10 |
| FUR | 7 | 8 | 5 | 9 | 6 | 5 | 14 | 16 | 6 | 11 | 13 | 9 | 15 | 5 | 12 | 14 | 12 | 36 | 24 | 14 | 9 | 9 | 13 | 10 |
| GCK | ||||||||||||||||||||||||
| GDH | 33 | 49 | 33 | 29 | 36 | 70 | 60 | 56 | 34 | 94 | 55 | 63 | 85 | 90 | 57 | 144 | 138 | 270 | 129 | 111 | 36 | 45 | 94 | 25 |
| GNA | 5 | 6 | 3 | 19 | 14 | 4 | 8 | 10 | 4 | 11 | 11 | 9 | 6 | 7 | 7 | 14 | 14 | 26 | 25 | 7 | 3 | 6 | 7 | 8 |
| GUA | 7 | 8 | 8 | 16 | 18 | 6 | 9 | 7 | 8 | 9 | 18 | 8 | 5 | 9 | 6 | 11 | 17 | 12 | 10 | 6 | 4 | 6 | 14 | 16 |
| GUI | 4 | 6 | 3 | 15 | 6 | 8 | 10 | 2 | 11 | 7 | 11 | 14 | 3 | 4 | 10 | 9 | 20 | 16 | 11 | 11 | 5 | 4 | 11 | 5 |
| GZH | 4 | 7 | 7 | 9 | 6 | 14 | 10 | 13 | 14 | 15 | 8 | 7 | 6 | 8 | 8 | 12 | 8 | 22 | 20 | 8 | 4 | 8 | 6 | 7 |
| HAD | 4 | 12 | 6 | 14 | 10 | 8 | 15 | 15 | 10 | 5 | 12 | 8 | 13 | 10 | 16 | 16 | 21 | 49 | 32 | 16 | 12 | 12 | 13 | 11 |
| HBK | 4 | 5 | 6 | 13 | 12 | 5 | 8 | 5 | 5 | 12 | 10 | 5 | 12 | 7 | 4 | 4 | 22 | 10 | 12 | 14 | 5 | 5 | 18 | 4 |
| HER | 3 | 5 | 3 | 15 | 8 | 4 | 7 | 5 | 6 | 11 | 7 | 3 | 6 | 3 | 5 | 6 | 17 | 11 | 8 | 13 | 4 | 3 | 18 | 4 |
| HLP | 13 | 10 | 8 | 8 | 13 | 10 | 21 | 14 | 11 | 14 | 18 | 14 | 19 | 17 | 32 | 30 | 20 | 59 | 35 | 16 | 14 | 19 | 22 | 16 |
| HON | 10 | 9 | 5 | 10 | 7 | 8 | 10 | 3 | 8 | 12 | 22 | 6 | 6 | 7 | 4 | 5 | 18 | 14 | 15 | 6 | 7 | 5 | 6 | 10 |
| HRB | 9 | 7 | 5 | 7 | 7 | 5 | 16 | 14 | 8 | 12 | 13 | 11 | 15 | 6 | 14 | 15 | 15 | 36 | 24 | 14 | 10 | 10 | 16 | 11 |
| HRN | 56 | 41 | 59 | 39 | 133 | 214 | 163 | 39 | 80 | 76 | 125 | 92 | 121 | 72 | 99 | 36 | 101 | 424 | 166 | 101 | 69 | 54 | 180 | 64 |
| HUA | 7 | 7 | 12 | 19 | 16 | 8 | 15 | 21 | 8 | 14 | 12 | 19 | 19 | 48 | 62 | 37 | 36 | 119 | 95 | 31 | 23 | 21 | 11 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 68 | 111 | 65 | 168 | 272 | 296 | 81 | 72 | 154 | 111 | 118 | 118 | 110 | 82 | 72 | 106 | 298 | 302 | 248 | 173 | 90 | 52 | 135 | 41 |
| IRT | 9 | 15 | 12 | 14 | 7 | 32 | 21 | 14 | 12 | 18 | 10 | 17 | 17 | 11 | 18 | 17 | 18 | 37 | 32 | 18 | 6 | 11 | 8 | 13 |
| IZN | ||||||||||||||||||||||||
| KAK | 5 | 3 | 3 | 7 | 4 | 12 | 10 | 12 | 8 | 9 | 14 | 8 | 7 | 6 | 10 | 12 | 16 | 20 | 12 | 9 | 3 | 7 | 3 | 3 |
| KDU | 5 | 4 | 3 | 10 | 11 | 6 | 12 | 15 | 8 | 12 | 19 | 9 | 4 | 9 | 8 | 13 | 19 | 15 | 16 | 6 | 3 | 11 | 10 | 6 |
| KMH | ||||||||||||||||||||||||
| KNY | 3 | 5 | 2 | 6 | 5 | 15 | 9 | 13 | 13 | 11 | 13 | 8 | 7 | 8 | 10 | 12 | 14 | 18 | 15 | 9 | 3 | 6 | 3 | 3 |
| KOU | 6 | 5 | 8 | 16 | 5 | 9 | 10 | 10 | 7 | 9 | 13 | 17 | 12 | 8 | 7 | 8 | 8 | 22 | 17 | 5 | 6 | 7 | 6 | 5 |
| LER | 12 | 12 | 6 | 18 | 21 | 30 | 18 | 16 | 24 | 6 | 20 | 12 | 17 | 32 | 41 | 33 | 57 | 68 | 43 | 16 | 20 | 13 | 18 | 12 |
| LRM | 7 | 5 | 4 | 11 | 13 | 7 | 10 | 13 | 8 | 12 | 13 | 9 | 7 | 10 | 9 | 14 | 16 | 31 | 26 | 8 | 4 | 7 | 9 | 10 |
| LVV | 12 | 7 | 6 | 5 | 9 | 8 | 16 | 14 | 10 | 12 | 13 | 10 | 12 | 10 | 15 | 18 | 14 | 39 | 25 | 14 | 10 | 11 | 18 | 12 |
| LYC | ||||||||||||||||||||||||
| LZH | 9 | 9 | 3 | 6 | 7 | 22 | 16 | 7 | 8 | 12 | 11 | 8 | 7 | 7 | 12 | 12 | 9 | 29 | 26 | 12 | 6 | 10 | 7 | 10 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 5 | 4 | 14 | 5 | 6 | 7 | 6 | 18 | 11 | 10 | 14 | 5 | 5 | 8 | 9 | 21 | 21 | 13 | 9 | 6 | 4 | 12 | 4 |
| MCQ | 30 | 27 | 30 | 41 | 22 | 56 | 45 | 94 | 133 | 153 | 293 | 298 | 102 | 55 | 160 | 245 | 181 | 219 | 139 | 54 | 22 | 19 | 26 | 39 |
| MEA | 23 | 32 | 17 | 33 | 40 | 27 | 20 | 78 | 114 | 63 | 66 | 47 | 33 | 28 | 31 | 32 | 63 | 84 | 45 | 32 | 34 | 46 | 32 | 35 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 6 | 4 | 6 | 7 | 6 | 13 | 17 | 18 | 6 | 14 | 15 | 12 | 10 | 7 | 13 | 16 | 19 | 30 | 14 | 13 | 8 | 9 | 3 | 8 |
| NAQ | 90 | 107 | 75 | 354 | 154 | 230 | 87 | 73 | 74 | 85 | 56 | 44 | 40 | 28 | 48 | 29 | 145 | 243 | 97 | 109 | 47 | 42 | 131 | 50 |
| NCK | 7 | 6 | 5 | 7 | 6 | 4 | 15 | 13 | 7 | 11 | 13 | 9 | 14 | 5 | 13 | 14 | 12 | 33 | 22 | 12 | 10 | 9 | 14 | 10 |
| NEW | 16 | 21 | 8 | 20 | 22 | 20 | 26 | 14 | 29 | 17 | 13 | 14 | 11 | 15 | 19 | 24 | 38 | 64 | 34 | 18 | 22 | 24 | 21 | 23 |
| NGK | 13 | 9 | 7 | 9 | 11 | 9 | 18 | 13 | 8 | 13 | 14 | 10 | 14 | 11 | 24 | 24 | 19 | 53 | 34 | 16 | 13 | 13 | 21 | 13 |
| NUR | 24 | 6 | 6 | 20 | 15 | 20 | 24 | 20 | 21 | 20 | 20 | 28 | 18 | 28 | 44 | 38 | 31 | 50 | 35 | 15 | 14 | 16 | 23 | 16 |
| NVS | 5 | 7 | 14 | 20 | 11 | 20 | 18 | 11 | 14 | 18 | 10 | 20 | 15 | 8 | 18 | 13 | 18 | 35 | 24 | 14 | 9 | 12 | 7 | 11 |
| OTT | 16 | 19 | 18 | 17 | 20 | 10 | 14 | 11 | 12 | 13 | 12 | 11 | 9 | 17 | 26 | 14 | 21 | 33 | 35 | 42 | 25 | 31 | 27 | 13 |
| PAF | 14 | 8 | 11 | 12 | 13 | 13 | 15 | 21 | 9 | 12 | 10 | 17 | 11 | 8 | 12 | 11 | 38 | 40 | 35 | 26 | 17 | 25 | 40 | 11 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 9 | 7 | 10 | 7 | 17 | 9 | 14 | 16 | 12 | 10 | 7 | 7 | 9 | 8 | 13 | 7 | 27 | 23 | 9 | 5 | 9 | 8 | 6 |
| PPT | 8 | 4 | 5 | 7 | 14 | 8 | 9 | 9 | 12 | 10 | 19 | 7 | 4 | 4 | 5 | 3 | 16 | 10 | 6 | 9 | 4 | 6 | 5 | 9 |
| PST | ||||||||||||||||||||||||
| QSB | 6 | 6 | 5 | 6 | 9 | 5 | 13 | 7 | 17 | 8 | 10 | 10 | 9 | 15 | 12 | 7 | 17 | 33 | 23 | 14 | 11 | 12 | 16 | 11 |
| RES | 30 | 47 | 77 | 39 | 52 | 51 | 33 | 42 | 55 | 92 | 80 | 47 | 96 | 76 | 92 | 88 | 104 | 155 | 159 | 200 | 160 | 115 | 136 | 90 |
| SBA | 18 | 35 | 24 | 68 | 18 | 82 | 47 | 45 | 39 | 24 | 69 | 46 | 50 | 52 | 51 | 46 | 77 | 87 | 80 | 60 | 49 | 58 | 29 | 26 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 12 | 26 | 15 | 30 | 20 | 19 | 29 | 34 | 32 | 24 | 17 | 34 | 24 | 16 | 9 | 22 | 30 | 53 | 43 | 27 | 12 | 21 | 22 | 27 |
| SJG | 5 | 4 | 8 | 15 | 7 | 10 | 9 | 10 | 5 | 13 | 8 | 17 | 12 | 7 | 5 | 4 | 7 | 18 | 11 | 6 | 8 | 14 | 4 | 6 |
| SOD | 87 | 42 | 44 | 83 | 53 | 53 | 33 | 21 | 25 | 34 | 40 | 62 | 40 | 57 | 67 | 51 | 105 | 338 | 61 | 77 | 78 | 78 | 101 | 47 |
| SPT | 2 | 8 | 3 | 13 | 7 | 8 | 12 | 7 | 11 | 5 | 7 | 12 | 5 | 8 | 13 | 4 | 12 | 22 | 18 | 15 | 8 | 7 | 12 | 8 |
| STJ | 11 | 9 | 6 | 11 | 16 | 12 | 8 | 17 | 21 | 14 | 11 | 10 | 10 | 8 | 9 | 9 | 9 | 32 | 37 | 25 | 19 | 21 | 16 | 5 |
| SUA | 8 | 7 | 6 | 7 | 8 | 9 | 11 | 8 | 12 | 15 | 14 | 8 | 16 | 9 | 11 | 13 | 19 | 36 | 22 | 15 | 8 | 14 | 16 | 12 |
| TAM | 2 | 6 | 3 | 12 | 7 | 5 | 10 | 7 | 18 | 6 | 7 | 8 | 7 | 10 | 13 | 11 | 28 | 17 | 12 | 15 | 6 | 6 | 14 | 7 |
| TAN | 4 | 5 | 4 | 9 | 11 | 7 | 10 | 4 | 8 | 19 | 12 | 4 | 8 | 8 | 2 | 5 | 20 | 19 | 14 | 14 | 5 | 7 | 15 | 5 |
| TDC | ||||||||||||||||||||||||
| THL | 22 | 31 | 51 | 46 | 41 | 55 | 36 | 25 | 61 | 100 | 73 | 68 | 95 | 73 | 61 | 96 | 111 | 163 | 103 | 97 | 97 | 57 | 82 | 29 |
| THY | 7 | 8 | 6 | 8 | 7 | 6 | 16 | 13 | 9 | 11 | 14 | 10 | 16 | 6 | 14 | 14 | 14 | 37 | 23 | 14 | 11 | 10 | 16 | 12 |
| TRW | 7 | 6 | 13 | 18 | 9 | 12 | 13 | 16 | 9 | 17 | 4 | 16 | 10 | 2 | 9 | 12 | 12 | 17 | 7 | 15 | 1 | 6 | 12 | 7 |
| TSU | 2 | 5 | 4 | 15 | 9 | 9 | 9 | 2 | 6 | 13 | 11 | 6 | 14 | 11 | 8 | 5 | 19 | 9 | 12 | 15 | 5 | 5 | 18 | 4 |
| TUC | 10 | 8 | 6 | 16 | 23 | 14 | 22 | 24 | 21 | 13 | 16 | 11 | 9 | 8 | 18 | 14 | 15 | 21 | 12 | 22 | 10 | 8 | 9 | 9 |
| UPS | 20 | 6 | 6 | 16 | 14 | 20 | 21 | 19 | 20 | 12 | 17 | 23 | 16 | 27 | 39 | 33 | 34 | 50 | 32 | 12 | 11 | 16 | 22 | 13 |
| VAL | 3 | 11 | 5 | 12 | 9 | 7 | 14 | 15 | 9 | 4 | 12 | 8 | 10 | 10 | 15 | 15 | 24 | 47 | 28 | 16 | 13 | 11 | 11 | 9 |
| VIC | 11 | 18 | 8 | 18 | 21 | 18 | 25 | 8 | 22 | 22 | 13 | 8 | 11 | 12 | 12 | 20 | 25 | 48 | 31 | 13 | 15 | 16 | 17 | 20 |
| VSS | 6 | 5 | 10 | 19 | 4 | 10 | 12 | 11 | 9 | 13 | 4 | 15 | 8 | 8 | 11 | 14 | 16 | 29 | 14 | 14 | 5 | 4 | 13 | 6 |
| WNG | 17 | 11 | 9 | 11 | 15 | 10 | 19 | 16 | 10 | 10 | 18 | 12 | 15 | 15 | 30 | 32 | 24 | 70 | 44 | 18 | 14 | 17 | 25 | 14 |
| YKC | 36 | 55 | 70 | 159 | 239 | 202 | 62 | 368 | 341 | 59 | 112 | 245 | 81 | 91 | 132 | 59 | 242 | 235 | 95 | 101 | 69 | 90 | 63 | 44 |
- Date modified: