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 | 2 | 1 | 3 | 11 | 8 | 9 | 4 | 2 | 8 | 3 | 7 | 6 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | |
| ABG | 4 | 5 | 8 | 8 | 10 | 8 | 3 | 8 | 11 | 8 | 11 | 8 | 8 | 6 | 6 | 6 | 4 | 3 | 4 | 3 | 5 | 3 | 2 | 3 |
| ABK | 70 | 46 | 41 | 17 | 25 | 41 | 9 | 11 | 12 | 8 | 33 | 29 | 24 | 16 | 43 | 36 | 19 | 15 | 41 | 36 | 52 | 26 | 37 | 53 |
| AIA | 5 | 5 | 14 | 6 | 6 | 6 | 1 | 2 | 4 | 16 | 8 | 7 | 7 | 1 | 7 | 4 | 2 | 3 | 6 | 5 | 3 | 3 | 3 | 6 |
| AMS | 7 | 5 | 2 | 5 | 2 | 3 | 4 | 3 | 4 | 4 | 8 | 2 | 5 | 2 | 5 | 5 | 3 | 3 | 5 | 2 | 3 | 3 | 2 | 3 |
| API | 2 | 2 | 2 | 2 | 1 | 5 | 1 | 2 | 3 | 3 | 3 | 4 | 1 | 2 | 4 | 2 | 2 | 2 | 1 | 2 | 2 | 1 | 3 | 3 |
| AQU | 1 | 2 | 1 | 1 | 2 | 3 | 1 | 3 | 8 | 3 | 3 | 4 | 5 | 2 | 6 | 8 | 4 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
| ARS | ||||||||||||||||||||||||
| ASC | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 0 | 3 | 4 | 3 | 5 | 1 | 7 | 1 | 0 | 4 | 7 | 4 | 2 | 1 | 0 | 1 |
| ASP | 4 | 8 | 4 | 3 | 3 | 2 | 5 | 5 | 3 | 2 | 2 | 3 | 1 | 1 | 1 | 1 | 2 | 1 | 0 | 1 | 1 | 1 | 2 | 3 |
| BDV | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 7 | 4 | 2 | 4 | 5 | 8 | 5 | 4 | 1 | 2 | 2 | 2 | 2 | 1 | 5 |
| BEL | 2 | 3 | 4 | 2 | 5 | 4 | 4 | 3 | 6 | 9 | 6 | 10 | 8 | 6 | 6 | 4 | 3 | 4 | 6 | 1 | 3 | 3 | 3 | 4 |
| BFE | 6 | 7 | 5 | 4 | 6 | 3 | 2 | 4 | 6 | 5 | 9 | 8 | 11 | 9 | 8 | 9 | 7 | 3 | 11 | 4 | 4 | 4 | 6 | 10 |
| BFO | ||||||||||||||||||||||||
| BLC | 108 | 46 | 221 | 164 | 56 | 116 | 101 | 19 | 120 | 127 | 210 | 131 | 38 | 61 | 114 | 98 | 71 | 77 | 109 | 141 | 64 | 93 | 131 | 59 |
| BMT | 7 | 9 | 5 | 1 | 1 | 2 | 6 | 4 | 5 | 3 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 2 | 3 | 3 |
| BNG | 1 | 1 | 1 | 2 | 3 | 7 | 2 | 6 | 4 | 4 | 11 | 3 | 3 | 9 | 4 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | 1 | 2 |
| BOU | 6 | 4 | 7 | 2 | 2 | 5 | 2 | 1 | 3 | 6 | 5 | 5 | 2 | 3 | 5 | 8 | 3 | 2 | 1 | 4 | 2 | 8 | 5 | 9 |
| BOX | 14 | 4 | 4 | 1 | 1 | 6 | 5 | 4 | 3 | 3 | 5 | 7 | 12 | 2 | 3 | 2 | 1 | 3 | 6 | 4 | 2 | 1 | 3 | 7 |
| BRW | 21 | 17 | 33 | 49 | 65 | 39 | 44 | 12 | 29 | 157 | 225 | 61 | 77 | 141 | 89 | 78 | 157 | 239 | 139 | 107 | 42 | 49 | 32 | 17 |
| BSL | 4 | 10 | 10 | 3 | 3 | 6 | 3 | 1 | 2 | 5 | 6 | 2 | 3 | 7 | 6 | 3 | 6 | 1 | 4 | 5 | 7 | 5 | 4 | 4 |
| CBB | 57 | 24 | 46 | 36 | 35 | 109 | 105 | 8 | 70 | 81 | 150 | 49 | 29 | 85 | 49 | 124 | 80 | 75 | 281 | 96 | 86 | 94 | 58 | 64 |
| CLF | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 5 | 4 | 10 | 4 | 9 | 7 | 5 | 7 | 6 | 5 | 4 | 4 | 2 | 2 | 2 | 5 |
| CMO | 45 | 25 | 49 | 41 | 33 | 111 | 35 | 13 | 23 | 148 | 121 | 103 | 76 | 31 | 87 | 42 | 35 | 29 | 35 | 42 | 24 | 19 | 17 | 25 |
| CNB | 3 | 4 | 2 | 2 | 6 | 5 | 3 | 3 | 3 | 9 | 13 | 8 | 3 | 4 | 9 | 6 | 4 | 2 | 2 | 3 | 3 | 5 | 2 | 3 |
| CSY | ||||||||||||||||||||||||
| CTA | 10 | 8 | 6 | 3 | 4 | 5 | 7 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 4 | 7 |
| CZT | 9 | 3 | 5 | 6 | 2 | 5 | 4 | 2 | 5 | 10 | 3 | 3 | 3 | 2 | 3 | 2 | 5 | 4 | 11 | 7 | 5 | 1 | 4 | 8 |
| DLR | ||||||||||||||||||||||||
| DOU | 3 | 3 | 3 | 2 | 2 | 4 | 3 | 3 | 3 | 7 | 8 | 4 | 9 | 7 | 8 | 7 | 6 | 4 | 2 | 5 | 3 | 2 | 3 | 8 |
| DRV | 38 | 105 | 87 | 119 | 97 | 62 | 22 | 45 | 31 | 71 | 49 | 72 | 84 | 16 | 178 | 102 | 67 | 53 | 66 | 48 | 71 | 38 | 63 | 51 |
| EBR | 2 | 7 | 4 | 3 | 4 | 6 | 4 | 7 | 8 | 6 | 5 | 7 | 5 | 4 | 5 | 13 | 7 | 5 | 4 | 6 | 4 | 4 | 5 | 6 |
| ESK | 5 | 3 | 5 | 4 | 1 | 3 | 2 | 3 | 2 | 5 | 7 | 2 | 3 | 12 | 11 | 6 | 9 | 5 | 4 | 7 | 6 | 5 | 4 | 14 |
| EUA | ||||||||||||||||||||||||
| EYR | 5 | 3 | 4 | 4 | 3 | 5 | 2 | 2 | 3 | 6 | 6 | 5 | 6 | 3 | 6 | 4 | 3 | 2 | 2 | 4 | 3 | 3 | 3 | 6 |
| FCC | 27 | 152 | 180 | 101 | 97 | 220 | 51 | 18 | 111 | 466 | 282 | 168 | 55 | 51 | 23 | 44 | 29 | 26 | 18 | 18 | 33 | 23 | 62 | 33 |
| FRD | 4 | 5 | 2 | 2 | 1 | 3 | 1 | 1 | 1 | 3 | 1 | 2 | 3 | 8 | 2 | 4 | 3 | 8 | 2 | 7 | 2 | 3 | 2 | 2 |
| FRN | 2 | 6 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 4 | 2 | 1 | 4 | 2 | 1 | 2 | 5 | 10 | 2 | 1 | 1 | 3 | 3 | 12 |
| FUR | 2 | 2 | 1 | 1 | 1 | 1 | 0 | 2 | 3 | 8 | 4 | 2 | 4 | 4 | 6 | 7 | 4 | 1 | 2 | 2 | 2 | 1 | 2 | 4 |
| GCK | ||||||||||||||||||||||||
| GDH | 39 | 27 | 64 | 39 | 24 | 67 | 39 | 69 | 96 | 94 | 135 | 212 | 59 | 57 | 98 | 77 | 53 | 42 | 99 | 72 | 84 | 32 | 58 | 177 |
| GNA | 16 | 10 | 5 | 15 | 8 | 8 | 6 | 8 | 13 | 19 | 18 | 9 | 15 | 4 | 12 | 16 | 6 | 8 | 6 | 3 | 9 | 4 | 4 | 10 |
| GUA | 6 | 4 | 2 | 3 | 2 | 4 | 4 | 2 | 2 | 2 | 1 | 2 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 6 |
| GUI | 2 | 2 | 4 | 2 | 1 | 3 | 3 | 2 | 2 | 3 | 5 | 8 | 7 | 3 | 10 | 8 | 3 | 4 | 4 | 2 | 2 | 1 | 2 | 4 |
| GZH | 7 | 10 | 9 | 2 | 3 | 6 | 5 | 5 | 3 | 1 | 2 | 5 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 4 | 4 | 7 |
| HAD | 3 | 3 | 2 | 4 | 2 | 2 | 1 | 3 | 6 | 5 | 11 | 3 | 6 | 10 | 7 | 11 | 7 | 7 | 6 | 4 | 5 | 5 | 5 | 7 |
| HBK | 6 | 4 | 3 | 3 | 5 | 3 | 4 | 6 | 4 | 7 | 4 | 4 | 5 | 5 | 6 | 3 | 3 | 4 | 4 | 3 | 2 | 3 | 4 | 6 |
| HER | 3 | 9 | 3 | 5 | 3 | 8 | 2 | 3 | 7 | 5 | 4 | 8 | 5 | 2 | 11 | 7 | 3 | 3 | 10 | 5 | 10 | 4 | 7 | 12 |
| HLP | 6 | 5 | 4 | 2 | 5 | 4 | 5 | 2 | 6 | 6 | 6 | 9 | 12 | 7 | 6 | 6 | 4 | 4 | 8 | 3 | 2 | 2 | 4 | 8 |
| HON | 10 | 2 | 3 | 3 | 1 | 3 | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 4 | 1 | 5 | 3 | 4 | 2 | 1 | 2 |
| HRB | 2 | 2 | 2 | 1 | 3 | 4 | 2 | 2 | 6 | 10 | 3 | 2 | 3 | 6 | 10 | 4 | 3 | 3 | 3 | 2 | 1 | 2 | 2 | 3 |
| HRN | 52 | 93 | 68 | 35 | 95 | 134 | 16 | 30 | 36 | 183 | 227 | 66 | 95 | 109 | 70 | 80 | 83 | 89 | 270 | 42 | 74 | 82 | 75 | 22 |
| HUA | 2 | 1 | 2 | 2 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 5 | 2 | 6 | 3 | 3 | 1 | 5 | 4 | 3 | 2 | 5 | 1 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 33 | 151 | 158 | 187 | 49 | 57 | 82 | 29 | 36 | 177 | 198 | 204 | 42 | 24 | 40 | 43 | 42 | 214 | 67 | 81 | 26 | 42 | 114 | 159 |
| IRT | 7 | 5 | 6 | 6 | 4 | 4 | 4 | 3 | 9 | 6 | 8 | 5 | 4 | 1 | 3 | 5 | 1 | 3 | 2 | 3 | 3 | 2 | 5 | 1 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 5 | 6 | 4 | 4 | 2 | 3 | 3 | 6 | 4 | 5 | 13 | 8 | 2 | 4 | 4 | 3 | 2 | 3 | 4 | 4 | 7 | 6 | 6 |
| KDU | 2 | 7 | 2 | 3 | 5 | 2 | 3 | 2 | 2 | 3 | 2 | 6 | 4 | 2 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 5 | 6 | 4 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 6 | 5 | 6 | 2 | 8 | 4 | 5 | 5 | 5 | 4 | 12 | 5 | 2 | 4 | 3 | 3 | 1 | 3 | 3 | 2 | 2 | 6 | 7 |
| KOU | 2 | 6 | 4 | 2 | 3 | 7 | 1 | 1 | 3 | 3 | 5 | 5 | 6 | 3 | 5 | 4 | 3 | 4 | 3 | 4 | 2 | 3 | 2 | 4 |
| LER | 17 | 11 | 14 | 12 | 3 | 10 | 3 | 5 | 4 | 5 | 9 | 5 | 6 | 7 | 24 | 6 | 14 | 4 | 4 | 17 | 8 | 8 | 13 | 40 |
| LRM | 10 | 7 | 10 | 11 | 15 | 4 | 3 | 4 | 6 | 13 | 5 | 18 | 18 | 3 | 15 | 17 | 8 | 3 | 5 | 3 | 8 | 4 | 3 | 16 |
| LVV | 9 | 7 | 9 | 5 | 8 | 8 | 6 | 8 | 9 | 9 | 4 | 7 | 9 | 8 | 7 | 5 | 5 | 4 | 9 | 7 | 6 | 6 | 5 | 4 |
| LYC | ||||||||||||||||||||||||
| LZH | 1 | 5 | 9 | 5 | 7 | 3 | 6 | 4 | 3 | 4 | 2 | 1 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 4 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 1 | 3 | 1 | 2 | 6 | 4 | 9 | 3 | 15 | 11 | 12 | 8 | 4 | 15 | 18 | 15 | 2 | 6 | 12 | 3 | 1 | 1 | 2 |
| MCQ | 21 | 28 | 28 | 62 | 16 | 35 | 20 | 9 | 26 | 76 | 160 | 119 | 105 | 59 | 61 | 73 | 43 | 48 | 42 | 30 | 11 | 16 | 5 | 27 |
| MEA | 18 | 48 | 41 | 11 | 26 | 91 | 31 | 7 | 58 | 127 | 113 | 51 | 16 | 10 | 10 | 8 | 10 | 6 | 6 | 14 | 4 | 12 | 11 | 19 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 1 | 2 | 3 | 5 | 2 | 4 | 4 | 5 | 3 | 3 | 5 | 2 | 3 | 2 | 3 | 1 | 1 | 1 | 1 | 1 | 3 | 4 | 4 | 4 |
| NAQ | 65 | 114 | 120 | 61 | 110 | 70 | 17 | 20 | 53 | 72 | 86 | 48 | 25 | 15 | 23 | 50 | 31 | 19 | 39 | 27 | 70 | 20 | 137 | 229 |
| NCK | 2 | 2 | 1 | 1 | 2 | 3 | 1 | 1 | 5 | 8 | 2 | 2 | 2 | 5 | 8 | 5 | 3 | 1 | 2 | 2 | 1 | 1 | 2 | 3 |
| NEW | 6 | 9 | 11 | 3 | 3 | 14 | 7 | 1 | 7 | 18 | 10 | 13 | 5 | 3 | 3 | 5 | 2 | 1 | 5 | 3 | 1 | 1 | 3 | 13 |
| NGK | 3 | 4 | 3 | 2 | 1 | 2 | 2 | 2 | 3 | 10 | 7 | 4 | 8 | 8 | 10 | 6 | 6 | 3 | 3 | 6 | 4 | 3 | 2 | 8 |
| NUR | 20 | 7 | 8 | 4 | 7 | 9 | 5 | 4 | 4 | 4 | 7 | 4 | 13 | 5 | 15 | 4 | 4 | 6 | 10 | 9 | 4 | 4 | 7 | 20 |
| NVS | 3 | 5 | 5 | 5 | 4 | 2 | 7 | 4 | 9 | 6 | 6 | 3 | 4 | 3 | 5 | 4 | 4 | 6 | 4 | 5 | 6 | 4 | 5 | |
| OTT | 6 | 13 | 8 | 2 | 6 | 5 | 5 | 2 | 4 | 18 | 7 | 12 | 6 | 3 | 5 | 5 | 9 | 3 | 4 | 8 | 5 | 4 | 4 | 5 |
| PAF | 19 | 8 | 6 | 5 | 5 | 2 | 3 | 3 | 4 | 4 | 3 | 2 | 3 | 2 | 3 | 3 | 7 | 4 | 13 | 9 | 6 | 6 | 5 | 11 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 7 | 12 | 9 | 4 | 7 | 5 | 7 | 3 | 2 | 2 | 5 | 4 | 2 | 3 | 3 | 2 | 2 | 1 | 1 | 2 | 4 | 5 | 8 |
| PPT | 2 | 5 | 4 | 3 | 2 | 4 | 1 | 1 | 2 | 1 | 4 | 2 | 2 | 1 | 2 | 3 | 3 | 2 | 4 | 2 | 5 | 7 | 2 | 6 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 2 | 1 | 2 | 2 | 1 | 7 | 9 | 3 | 6 | 2 | 4 | 3 | 2 | 5 | 4 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 3 |
| RES | 30 | 22 | 29 | 16 | 17 | 31 | 13 | 16 | 10 | 20 | 33 | 28 | 20 | 27 | 26 | 94 | 127 | 45 | 110 | 105 | 47 | 56 | 64 | 63 |
| SBA | 12 | 19 | 57 | 27 | 21 | 42 | 52 | 7 | 7 | 45 | 131 | 72 | 22 | 14 | 33 | 73 | 45 | 15 | 13 | 28 | 13 | 34 | 32 | 17 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 17 | 17 | 6 | 12 | 4 | 35 | 8 | 2 | 12 | 38 | 33 | 20 | 10 | 5 | 14 | 13 | 11 | 5 | 5 | 9 | 12 | 5 | 5 | 19 |
| SJG | 2 | 2 | 4 | 2 | 1 | 3 | 2 | 1 | 1 | 2 | 1 | 6 | 4 | 5 | 2 | 1 | 3 | 3 | 5 | 3 | 1 | 2 | 4 | 1 |
| SOD | 91 | 25 | 48 | 15 | 19 | 31 | 7 | 9 | 8 | 6 | 24 | 16 | 21 | 10 | 52 | 35 | 14 | 14 | 36 | 27 | 22 | 22 | 30 | 58 |
| SPT | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 8 | 5 | 5 | 2 | 2 | 7 | 9 | 6 | 5 | 3 | 2 | 1 | 2 | 1 | 2 |
| STJ | 4 | 15 | 21 | 9 | 6 | 21 | 4 | 5 | 6 | 15 | 15 | 10 | 16 | 6 | 12 | 5 | 13 | 12 | 12 | 15 | 11 | 8 | 7 | 16 |
| SUA | 1 | 3 | 3 | 2 | 2 | 3 | 1 | 7 | 11 | 5 | 4 | 3 | 7 | 7 | 6 | 3 | 1 | 1 | 2 | 3 | 2 | 2 | 2 | 2 |
| TAM | 1 | 1 | 1 | 1 | 2 | 4 | 1 | 6 | 4 | 9 | 9 | 5 | 3 | 2 | 4 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| TAN | 1 | 1 | 1 | 3 | 3 | 3 | 7 | 6 | 4 | 5 | 5 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| TDC | ||||||||||||||||||||||||
| THL | 12 | 21 | 22 | 17 | 28 | 34 | 31 | 29 | 18 | 22 | 22 | 149 | 75 | 71 | 67 | 67 | 81 | 15 | 27 | 21 | 42 | 21 | 24 | 20 |
| THY | 1 | 2 | 1 | 1 | 2 | 4 | 2 | 2 | 6 | 10 | 2 | 2 | 2 | 6 | 10 | 4 | 3 | 2 | 2 | 1 | 1 | 1 | 1 | 3 |
| TRW | 1 | 4 | 1 | 1 | 2 | 4 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 5 | 5 | 3 | 3 | 9 | 5 | 2 | 1 | 2 | 2 | 2 |
| TSU | 1 | 2 | 1 | 1 | 3 | 3 | 5 | 3 | 1 | 2 | 2 | 3 | 8 | 3 | 6 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 2 | 3 |
| TUC | 3 | 2 | 2 | 1 | 0 | 1 | 0 | 1 | 1 | 2 | 1 | 1 | 4 | 1 | 5 | 4 | 4 | 8 | 7 | 1 | 3 | 4 | 5 | 6 |
| UPS | 16 | 6 | 6 | 4 | 6 | 8 | 3 | 2 | 3 | 4 | 3 | 4 | 12 | 6 | 14 | 4 | 6 | 5 | 9 | 9 | 3 | 3 | 8 | 22 |
| VAL | 4 | 8 | 5 | 9 | 3 | 8 | 4 | 4 | 7 | 10 | 11 | 5 | 3 | 12 | 14 | 14 | 9 | 8 | 7 | 6 | 7 | 9 | 10 | 7 |
| VIC | 6 | 11 | 7 | 8 | 3 | 11 | 4 | 1 | 5 | 15 | 7 | 12 | 4 | 2 | 3 | 6 | 1 | 6 | 8 | 3 | 4 | 4 | 3 | 11 |
| VSS | 2 | 4 | 3 | 2 | 2 | 4 | 1 | 1 | 1 | 4 | 4 | 2 | 5 | 3 | 7 | 1 | 1 | 2 | 3 | 2 | 3 | 1 | 3 | 4 |
| WNG | 3 | 4 | 3 | 2 | 4 | 1 | 2 | 3 | 4 | 6 | 7 | 3 | 9 | 8 | 7 | 10 | 5 | 1 | 8 | 3 | 2 | 3 | 4 | 6 |
| YKC | 52 | 101 | 64 | 74 | 54 | 267 | 138 | 14 | 168 | 485 | 238 | 114 | 58 | 80 | 91 | 48 | 43 | 27 | 44 | 41 | 11 | 22 | 30 | 32 |
- Date modified: