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 | 6 | 3 | 12 | 5 | 10 | 6 | 3 | 2 | 7 | 3 | 2 | 5 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| ABG | 4 | 4 | 5 | 8 | 14 | 13 | 7 | 12 | 21 | 4 | 4 | 4 | 3 | 3 | 3 | 5 | 2 | 3 | 3 | 3 | 2 | 2 | 2 | 4 |
| ABK | 10 | 18 | 11 | 30 | 23 | 23 | 28 | 41 | 41 | 32 | 16 | 37 | 11 | 10 | 10 | 11 | 42 | 59 | 18 | 87 | 41 | 8 | 77 | 61 |
| AIA | 2 | 3 | 2 | 14 | 7 | 10 | 10 | 30 | 19 | 11 | 13 | 13 | 5 | 5 | 4 | 5 | 1 | 3 | 6 | 4 | 3 | 3 | 4 | 3 |
| AMS | 3 | 2 | 3 | 3 | 3 | 4 | 7 | 10 | 8 | 11 | 4 | 5 | 2 | 3 | 1 | 3 | 3 | 3 | 4 | 7 | 7 | 2 | 4 | 6 |
| API | 4 | 2 | 2 | 4 | 2 | 2 | 4 | 4 | 3 | 2 | 3 | 5 | 3 | 2 | 2 | 2 | 2 | 1 | 2 | 1 | 2 | 5 | 3 | 1 |
| AQU | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 3 | 5 | 3 | 1 | 2 | 2 | 2 | 2 | 6 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 3 | 1 | 4 | 3 | 2 | 3 | 7 | 2 | 1 | 4 | 5 | 3 | 2 | 1 | 1 | 0 |
| ASP | 10 | 8 | 1 | 5 | 4 | 2 | 3 | 7 | 3 | 2 | 2 | 3 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 2 |
| BDV | 1 | 1 | 1 | 1 | 2 | 5 | 2 | 2 | 2 | 2 | 6 | 4 | 2 | 2 | 7 | 6 | 2 | 1 | 1 | 3 | 1 | 0 | 2 | 1 |
| BEL | 2 | 3 | 3 | 3 | 3 | 3 | 4 | 6 | 4 | 4 | 6 | 3 | 6 | 5 | 5 | 9 | 3 | 3 | 3 | 3 | 3 | 1 | 2 | 5 |
| BFE | 3 | 3 | 2 | 10 | 6 | 11 | 5 | 8 | 6 | 12 | 11 | 5 | 5 | 6 | 4 | 10 | 6 | 7 | 6 | 8 | 5 | 2 | 6 | 12 |
| BFO | ||||||||||||||||||||||||
| BLC | 40 | 30 | 44 | 40 | 377 | 335 | 183 | 51 | 273 | 92 | 100 | 138 | 116 | 147 | 37 | 103 | 52 | 86 | 46 | 26 | 53 | 68 | 79 | 70 |
| BMT | 3 | 6 | 4 | 3 | 2 | 5 | 4 | 3 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 2 | 1 | 2 |
| BNG | 1 | 1 | 1 | 1 | 3 | 9 | 3 | 16 | 3 | 2 | 2 | 5 | 2 | 3 | 3 | 2 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| BOU | 4 | 1 | 1 | 4 | 4 | 7 | 4 | 7 | 8 | 3 | 5 | 5 | 3 | 5 | 4 | 6 | 11 | 9 | 5 | 1 | 7 | 4 | 5 | 6 |
| BOX | 2 | 1 | 2 | 2 | 1 | 3 | 3 | 6 | 4 | 8 | 2 | 2 | 7 | 1 | 2 | 3 | 1 | 4 | 3 | 9 | 3 | 1 | 4 | 4 |
| BRW | 9 | 12 | 15 | 26 | 79 | 85 | 60 | 78 | 203 | 126 | 108 | 157 | 109 | 46 | 11 | 31 | 18 | 60 | 25 | 9 | 12 | 12 | 18 | 10 |
| BSL | 5 | 2 | 1 | 5 | 5 | 9 | 6 | 1 | 7 | 5 | 5 | 6 | 6 | 11 | 7 | 8 | 4 | 3 | 2 | 4 | 6 | 5 | 4 | 3 |
| CBB | 89 | 38 | 38 | 30 | 145 | 108 | 86 | 29 | 392 | 135 | 95 | 33 | 26 | 47 | 46 | 123 | 63 | 171 | 104 | 67 | 87 | 143 | 65 | 71 |
| CLF | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 1 | 2 | 9 | 6 | 8 | 6 | 8 | 7 | 3 | 5 | 2 | 2 | 2 | 1 | 1 | 1 |
| CMO | 17 | 11 | 13 | 43 | 36 | 62 | 76 | 135 | 296 | 99 | 115 | 103 | 140 | 41 | 24 | 11 | 21 | 17 | 24 | 19 | 7 | 9 | 17 | 7 |
| CNB | 4 | 4 | 2 | 8 | 10 | 2 | 9 | 7 | 9 | 4 | 3 | 13 | 9 | 2 | 1 | 1 | 1 | 3 | 3 | 2 | 2 | 2 | 4 | 1 |
| CSY | ||||||||||||||||||||||||
| CTA | 9 | 3 | 6 | 3 | 1 | 3 | 3 | 1 | 1 | 5 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 3 | 6 |
| CZT | 2 | 2 | 2 | 6 | 4 | 5 | 12 | 4 | 15 | 7 | 3 | 3 | 5 | 2 | 2 | 3 | 2 | 4 | 2 | 10 | 6 | 2 | 5 | 3 |
| DLR | 3 | 3 | 2 | 3 | 3 | 8 | 7 | 4 | 6 | 2 | 3 | 6 | 4 | 6 | 8 | 13 | 6 | 3 | 5 | 3 | 1 | 6 | 5 | 7 |
| DOU | 2 | 3 | 2 | 2 | 5 | 8 | 5 | 3 | 5 | 5 | 9 | 5 | 6 | 6 | 6 | 5 | 2 | 3 | 3 | 5 | 2 | 2 | 4 | 3 |
| DRV | 163 | 114 | 103 | 158 | 45 | 70 | 83 | 78 | 93 | 26 | 46 | 48 | 47 | 25 | 29 | 22 | 32 | 40 | 43 | 19 | 26 | 51 | 65 | 77 |
| EBR | 4 | 2 | 2 | 3 | 11 | 9 | 4 | 11 | 7 | 5 | 8 | 5 | 7 | 9 | 5 | 8 | 7 | 8 | 6 | 5 | 5 | 5 | 5 | 6 |
| ESK | 3 | 1 | 1 | 6 | 6 | 6 | 5 | 4 | 6 | 4 | 4 | 4 | 3 | 1 | 4 | 10 | 2 | 3 | 4 | 1 | 6 | 2 | 1 | 3 |
| EUA | ||||||||||||||||||||||||
| EYR | 5 | 2 | 2 | 3 | 5 | 7 | 4 | 5 | 9 | 5 | 7 | 8 | 5 | 3 | 3 | 2 | 2 | 2 | 5 | 4 | 3 | 3 | 3 | 6 |
| FCC | 24 | 24 | 24 | 25 | 449 | 378 | 62 | 241 | 404 | 258 | 151 | 169 | 76 | 37 | 18 | 35 | 12 | 22 | 15 | 15 | 22 | 18 | 28 | 50 |
| FRD | 2 | 1 | 1 | 1 | 3 | 4 | 4 | 4 | 6 | 3 | 2 | 2 | 4 | 2 | 3 | 1 | 6 | 3 | 4 | 4 | 4 | 2 | 2 | 3 |
| FRN | 4 | 1 | 1 | 3 | 1 | 3 | 2 | 2 | 3 | 3 | 1 | 1 | 4 | 3 | 1 | 5 | 10 | 12 | 6 | 1 | 6 | 2 | 4 | 4 |
| FUR | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 2 | 2 | 6 | 5 | 2 | 2 | 6 | 7 | 3 | 1 | 1 | 2 | 1 | 0 | 1 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 76 | 35 | 18 | 164 | 120 | 106 | 131 | 150 | 324 | 143 | 130 | 215 | 220 | 157 | 48 | 86 | 138 | 162 | 39 | 28 | 24 | 25 | 51 | 47 |
| GNA | 6 | 6 | 13 | 20 | 16 | 9 | 10 | 18 | 26 | 14 | 12 | 6 | 10 | 6 | 3 | 4 | 4 | 10 | 6 | 7 | 5 | 4 | 3 | 9 |
| GUA | 6 | 5 | 3 | 3 | 2 | 4 | 2 | 2 | 3 | 1 | 1 | 1 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 4 |
| GUI | 1 | 1 | 1 | 2 | 3 | 5 | 2 | 3 | 5 | 2 | 5 | 3 | 8 | 2 | 2 | 2 | 3 | 4 | 4 | 2 | 1 | 2 | 2 | 2 |
| GZH | 7 | 14 | 5 | 4 | 2 | 3 | 7 | 4 | 6 | 5 | 1 | 6 | 1 | 2 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 |
| HAD | 2 | 1 | 2 | 5 | 5 | 6 | 1 | 5 | 4 | 4 | 6 | 9 | 6 | 5 | 11 | 8 | 3 | 8 | 3 | 3 | 5 | 2 | 3 | 6 |
| HBK | 2 | 2 | 3 | 2 | 5 | 5 | 6 | 5 | 5 | 3 | 10 | 5 | 4 | 3 | 8 | 4 | 3 | 4 | 3 | 6 | 4 | 3 | 2 | 3 |
| HER | 6 | 2 | 6 | 6 | 4 | 13 | 17 | 13 | 19 | 11 | 7 | 9 | 13 | 6 | 7 | 4 | 5 | 3 | 3 | 7 | 2 | 4 | 4 | 4 |
| HLP | 2 | 2 | 1 | 5 | 3 | 5 | 5 | 8 | 4 | 9 | 10 | 3 | 7 | 8 | 6 | 7 | 4 | 5 | 5 | 5 | 2 | 1 | 2 | 6 |
| HON | 3 | 6 | 4 | 2 | 1 | 1 | 3 | 2 | 2 | 2 | 1 | 2 | 3 | 2 | 1 | 2 | 3 | 2 | 2 | 5 | 11 | 8 | 2 | 2 |
| HRB | 1 | 1 | 1 | 1 | 4 | 3 | 2 | 3 | 4 | 2 | 3 | 2 | 1 | 4 | 6 | 7 | 2 | 2 | 4 | 3 | 1 | 1 | 1 | 1 |
| HRN | 21 | 31 | 60 | 134 | 39 | 300 | 151 | 132 | 122 | 92 | 150 | 82 | 52 | 55 | 37 | 67 | 37 | 80 | 40 | 120 | 22 | 24 | 60 | 33 |
| HUA | 1 | 1 | 1 | 4 | 1 | 1 | 3 | 1 | 4 | 1 | 2 | 2 | 4 | 4 | 1 | 7 | 3 | 3 | 3 | 6 | 3 | 2 | 2 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 32 | 76 | 34 | 190 | 181 | 160 | 120 | 56 | 260 | 169 | 194 | 221 | 45 | 66 | 39 | 72 | 79 | 64 | 84 | 59 | 42 | 56 | 34 | 28 |
| IRT | 4 | 2 | 5 | 4 | 6 | 2 | 7 | 4 | 7 | 4 | 3 | 3 | 6 | 2 | 1 | 1 | 1 | 3 | 2 | 1 | 1 | 1 | 2 | 5 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 2 | 8 | 6 | 4 | 9 | 3 | 10 | 6 | 10 | 9 | 12 | 7 | 3 | 5 | 2 | 2 | 2 | 2 | 4 | 3 | 3 | 5 | 5 |
| KDU | 11 | 16 | 3 | 3 | 3 | 3 | 10 | 4 | 2 | 6 | 4 | 6 | 4 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 3 | 3 | 4 |
| KMH | ||||||||||||||||||||||||
| KNY | 5 | 3 | 4 | 5 | 6 | 10 | 6 | 9 | 5 | 5 | 8 | 14 | 7 | 3 | 3 | 2 | 1 | 2 | 3 | 2 | 1 | 3 | 2 | 3 |
| KOU | 3 | 1 | 1 | 2 | 5 | 3 | 3 | 5 | 11 | 7 | 5 | 14 | 7 | 12 | 4 | 8 | 10 | 4 | 4 | 3 | 2 | 2 | 3 | 2 |
| LER | 5 | 2 | 5 | 10 | 17 | 17 | 18 | 12 | 15 | 8 | 9 | 4 | 4 | 5 | 6 | 9 | 13 | 6 | 6 | 4 | 7 | 4 | 6 | 7 |
| LRM | 13 | 14 | 16 | 31 | 14 | 5 | 13 | 7 | 22 | 16 | 11 | 17 | 16 | 4 | 5 | 3 | 3 | 4 | 3 | 3 | 4 | 2 | 5 | 13 |
| LVV | 3 | 3 | 8 | 6 | 8 | 6 | 9 | 7 | 8 | 9 | 7 | 7 | 5 | 10 | 7 | 10 | 8 | 6 | 4 | 5 | 4 | 7 | 4 | 7 |
| LYC | ||||||||||||||||||||||||
| LZH | 1 | 6 | 7 | 7 | 3 | 2 | 6 | 1 | 6 | 4 | 2 | 1 | 2 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 3 | 1 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 1 | 2 | 2 | 3 | 8 | 4 | 16 | 4 | 5 | 6 | 24 | 18 | 7 | 8 | 7 | 19 | 8 | 2 | 8 | 3 | 1 | 1 | 1 |
| MCQ | 4 | 11 | 13 | 31 | 31 | 43 | 47 | 118 | 298 | 52 | 34 | 199 | 136 | 21 | 11 | 29 | 9 | 19 | 16 | 7 | 5 | 5 | 8 | 6 |
| MEA | 8 | 5 | 7 | 30 | 57 | 103 | 72 | 156 | 116 | 98 | 107 | 40 | 16 | 17 | 6 | 12 | 4 | 11 | 5 | 5 | 7 | 7 | 8 | 10 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 3 | 2 | 3 | 6 | 2 | 7 | 3 | 6 | 3 | 3 | 2 | 2 | 3 | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 5 | 2 |
| NAQ | 23 | 37 | 30 | 162 | 275 | 221 | 141 | 161 | 210 | 124 | 131 | 56 | 19 | 49 | 28 | 66 | 32 | 39 | 42 | 37 | 53 | 18 | 49 | 32 |
| NCK | 1 | 1 | 1 | 1 | 2 | 4 | 2 | 1 | 4 | 1 | 3 | 3 | 1 | 2 | 6 | 7 | 1 | 2 | 1 | 3 | 1 | 1 | 2 | 1 |
| NEW | ||||||||||||||||||||||||
| NGK | 2 | 2 | 2 | 2 | 5 | 10 | 7 | 3 | 6 | 4 | 9 | 6 | 4 | 3 | 6 | 8 | 3 | 3 | 3 | 6 | 2 | 1 | 5 | 4 |
| NUR | 2 | 3 | 3 | 11 | 5 | 3 | 3 | 8 | 4 | 14 | 6 | 4 | 10 | 5 | 3 | 8 | 2 | 3 | 4 | 14 | 3 | 1 | 8 | 8 |
| NVS | 3 | 4 | 5 | 4 | 4 | 8 | 8 | 7 | 13 | 6 | 4 | 3 | 4 | 6 | 5 | 5 | 4 | 5 | 3 | 4 | 4 | 3 | 3 | 4 |
| OTT | 2 | 2 | 3 | 12 | 13 | 13 | 19 | 31 | 24 | 17 | 8 | 13 | 3 | 5 | 3 | 6 | 7 | 10 | 5 | 2 | 3 | 4 | 4 | 5 |
| PAF | 1 | 2 | 2 | 4 | 6 | 3 | 3 | 3 | 4 | 3 | 3 | 4 | 2 | 4 | 4 | 4 | 3 | 6 | 3 | 9 | 4 | 2 | 4 | 3 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 7 | 10 | 15 | 12 | 4 | 6 | 14 | 5 | 9 | 7 | 3 | 8 | 4 | 5 | 2 | 2 | 2 | 3 | 3 | 1 | 1 | 2 | 5 | 2 |
| PPT | 5 | 6 | 7 | 1 | 4 | 6 | 3 | 3 | 6 | 4 | 4 | 3 | 3 | 2 | 2 | 2 | 3 | 5 | 3 | 4 | 11 | 14 | 4 | 2 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 1 | 1 | 4 | 6 | 2 | 2 | 5 | 6 | 1 | 1 | 2 | 2 | 1 | 3 | 2 | 2 | 1 | 1 | 3 | 2 | 2 | 2 | 1 |
| RES | 57 | 26 | 26 | 44 | 54 | 25 | 25 | 25 | 96 | 38 | 54 | 18 | 25 | 87 | 66 | 67 | 227 | 282 | 112 | 120 | 123 | 47 | 40 | 33 |
| SBA | 18 | 12 | 13 | 23 | 40 | 96 | 63 | 14 | 267 | 95 | 17 | 63 | 10 | 43 | 18 | 32 | 16 | 57 | 48 | 11 | 36 | 28 | 22 | 39 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 6 | 5 | 7 | 20 | 6 | 20 | 11 | 47 | 77 | 30 | 21 | 29 | 32 | 13 | 8 | 6 | 4 | 4 | 7 | 4 | 7 | 3 | 3 | 5 |
| SJG | 1 | 1 | 1 | 2 | 2 | 4 | 2 | 4 | 3 | 4 | 3 | 2 | 2 | 4 | 4 | 2 | 2 | 3 | 2 | 2 | 2 | 1 | 2 | 3 |
| SOD | 8 | 10 | 8 | 21 | 14 | 18 | 15 | 25 | 41 | 29 | 18 | 37 | 12 | 8 | 10 | 10 | 20 | 39 | 13 | 87 | 28 | 8 | 64 | 54 |
| SPT | 1 | 0 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 7 | 8 | 5 | 5 | 6 | 7 | 2 | 5 | 2 | 1 | 1 | 1 | 1 | 1 |
| STJ | 3 | 6 | 4 | 36 | 29 | 29 | 28 | 16 | 44 | 21 | 17 | 17 | 15 | 14 | 15 | 9 | 8 | 10 | 14 | 7 | 5 | 7 | 6 | 4 |
| SUA | 4 | 3 | 4 | 4 | 6 | 6 | 5 | 4 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | |||||||||
| TAM | 1 | 1 | 1 | 1 | 1 | 3 | 3 | 4 | 7 | 5 | 2 | 1 | 2 | 4 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 34 | 33 | 28 | 54 | 22 | 46 | 24 | 25 | 69 | 75 | 88 | 85 | 35 | 243 | 59 | 98 | 268 | 277 | 30 | 17 | 20 | 12 | 13 | 19 |
| THY | 1 | 1 | 1 | 1 | 1 | 4 | 1 | 1 | 5 | 2 | 3 | 2 | 1 | 3 | 6 | 8 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 |
| TRW | 0 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 6 | 2 | 2 | 3 | 2 | 3 | 4 | 3 | 4 | 3 | 3 | 1 | 1 | 1 | 1 | 1 |
| TSU | 1 | 1 | 2 | 2 | 2 | 2 | 6 | 6 | 7 | 6 | 5 | 3 | 5 | 5 | 2 | 6 | 4 | 1 | 1 | 2 | 1 | 2 | 1 | 1 |
| TUC | 6 | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 4 | 4 | 2 | 11 | 14 | 11 | 2 | 3 | 5 | 3 | 3 | 5 |
| UPS | 2 | 3 | 2 | 9 | 7 | 5 | 3 | 5 | 4 | 14 | 3 | 6 | 7 | 4 | 3 | 7 | 2 | 3 | 5 | 9 | 2 | 1 | 6 | 7 |
| VAL | 2 | 3 | 3 | 11 | 10 | 17 | 6 | 9 | 12 | 10 | 6 | 12 | 9 | 4 | 13 | 12 | 6 | 7 | 4 | 8 | 11 | 3 | 8 | 13 |
| VIC | 9 | 2 | 4 | 7 | 5 | 10 | 11 | 15 | 12 | 8 | 8 | 8 | 4 | 4 | 1 | 5 | 3 | 8 | 5 | 3 | 3 | 4 | 5 | 3 |
| VSS | 1 | 1 | 1 | 2 | 3 | 5 | 2 | 2 | 7 | 11 | 6 | 6 | 9 | 10 | 2 | 7 | 2 | 2 | 2 | 3 | 1 | 2 | 3 | 2 |
| WNG | ||||||||||||||||||||||||
| YKC | 10 | 15 | 14 | 69 | 80 | 340 | 145 | 303 | 323 | 149 | 211 | 80 | 36 | 97 | 20 | 38 | 27 | 22 | 19 | 16 | 9 | 14 | 20 | 14 |
- Date modified: