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 | 4 | 6 | 10 | 4 | 9 | 29 | 34 | 42 | 17 | 8 | 9 | 16 | 21 | 10 | 3 | 3 | 2 | 4 | 4 | 5 | 7 | 9 | 7 | 7 |
| ABG | 12 | 10 | 8 | 7 | 17 | 8 | 18 | 11 | 14 | 10 | 8 | 6 | 13 | 6 | 8 | 7 | 6 | 6 | 8 | 6 | 9 | 8 | 7 | 8 |
| ABK | 128 | 22 | 52 | 48 | 56 | 47 | 10 | 29 | 49 | 23 | 26 | 34 | 25 | 43 | 31 | 25 | 21 | 43 | 41 | 41 | 381 | 361 | 84 | 105 |
| AIA | 6 | 11 | 11 | 16 | 20 | 14 | 8 | 14 | 8 | 5 | 4 | 7 | 10 | 4 | 9 | 2 | 4 | 7 | 7 | 3 | 12 | 27 | 10 | 7 |
| AMS | 10 | 8 | 4 | 7 | 9 | 7 | 23 | 4 | 13 | 3 | 10 | 6 | 4 | 3 | 9 | 3 | 1 | 12 | 9 | 4 | 11 | 5 | 4 | 8 |
| API | 2 | 6 | 24 | 20 | 5 | 3 | 10 | 3 | 5 | 3 | 4 | 3 | 4 | 8 | 3 | 2 | 2 | 4 | 5 | 5 | 4 | 7 | 6 | 6 |
| AQU | 3 | 5 | 13 | 7 | 12 | 8 | 12 | 9 | 5 | 9 | 9 | 7 | 10 | 5 | 4 | 6 | 2 | 8 | 5 | 3 | 8 | 11 | 7 | 10 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 6 | 9 | 5 | 6 | 1 | 4 | 10 | 5 | 5 | 9 | 8 | 12 | 10 | 7 | 11 | 7 | 2 | 7 | 2 | 9 | 9 | 5 | 2 |
| ASP | 2 | 5 | 12 | 12 | 9 | 9 | 13 | 14 | 10 | 6 | 5 | 4 | 9 | 10 | 6 | 2 | 1 | 6 | 3 | 3 | 2 | 10 | 9 | 7 |
| BDV | 4 | 4 | 14 | 8 | 12 | 11 | 13 | 7 | 4 | 6 | 10 | 8 | 11 | 7 | 9 | 3 | 5 | 7 | 6 | 4 | 13 | 15 | 6 | 12 |
| BEL | 6 | 6 | 16 | 10 | 12 | 12 | 16 | 12 | 9 | 5 | 10 | 13 | 9 | 10 | 8 | 3 | 9 | 6 | 7 | 5 | 18 | 22 | 8 | 16 |
| BFE | 8 | 6 | 20 | 10 | 17 | 12 | 14 | 6 | 16 | 8 | 8 | 13 | 8 | 16 | 7 | 3 | 10 | 9 | 8 | 6 | 21 | 27 | 8 | 18 |
| BFO | ||||||||||||||||||||||||
| BLC | 26 | 38 | 57 | 36 | 64 | 66 | 50 | 78 | 59 | 32 | 45 | 75 | 43 | 144 | 164 | 66 | 32 | 49 | 47 | 72 | 106 | 152 | 125 | 103 |
| BMT | 5 | 8 | 13 | 10 | 18 | 14 | 14 | 18 | 15 | 7 | 7 | 7 | 8 | 10 | 7 | 3 | 2 | 8 | 5 | 5 | 5 | 10 | 8 | 16 |
| BNG | 4 | 7 | 11 | 6 | 12 | 3 | 9 | 24 | 13 | 3 | 3 | 6 | 16 | 14 | 4 | 5 | 1 | 4 | 5 | 5 | 5 | 12 | 8 | 6 |
| BOU | 6 | 14 | 15 | 16 | 9 | 14 | 7 | 8 | 7 | 5 | 4 | 7 | 4 | 6 | 3 | 2 | 7 | 6 | 8 | 8 | 5 | 14 | 11 | 11 |
| BOX | 12 | 7 | 20 | 13 | 9 | 10 | 14 | 12 | 25 | 8 | 18 | 18 | 10 | 14 | 7 | 5 | 11 | 10 | 17 | 9 | 18 | 14 | 16 | 16 |
| BRW | 48 | 30 | 175 | 116 | 73 | 71 | 259 | 316 | 157 | 143 | 86 | 37 | 47 | 392 | 143 | 65 | 65 | 68 | 73 | 59 | 42 | 184 | 98 | 93 |
| BSL | 5 | 12 | 15 | 13 | 13 | 13 | 6 | 11 | 5 | 6 | 3 | 7 | 13 | 6 | 13 | 10 | 8 | 8 | 7 | 7 | 8 | 12 | 8 | 8 |
| CBB | 100 | 29 | 44 | 55 | 35 | 64 | 40 | 60 | 40 | 22 | 29 | 74 | 21 | 99 | 81 | 70 | 46 | 93 | 98 | 197 | 124 | 239 | 168 | 80 |
| CLF | 7 | 5 | 12 | 9 | 15 | 9 | 12 | 4 | 4 | 5 | 8 | 7 | 9 | 7 | 8 | 3 | 7 | 10 | 6 | 4 | 10 | 14 | 7 | 11 |
| CMO | 39 | 36 | 135 | 75 | 62 | 56 | 274 | 129 | 38 | 62 | 49 | 48 | 31 | 132 | 109 | 10 | 23 | 22 | 24 | 20 | 21 | 49 | 54 | 84 |
| CNB | 1 | 3 | 12 | 9 | 15 | 15 | 15 | 18 | 9 | 5 | 6 | 5 | 9 | 13 | 4 | 2 | 2 | 3 | 2 | 4 | 5 | 9 | 8 | 16 |
| CSY | ||||||||||||||||||||||||
| CTA | 6 | 12 | 16 | 14 | 10 | 4 | 15 | 12 | 9 | 4 | 6 | 4 | 8 | 10 | 4 | 2 | 1 | 5 | 2 | 3 | 3 | 7 | 5 | 6 |
| CZT | 9 | 2 | 4 | 7 | 13 | 10 | 17 | 4 | 16 | 3 | 4 | 2 | 4 | 4 | 8 | 2 | 1 | 2 | 8 | 6 | 19 | 13 | 6 | 5 |
| DLR | 7 | 14 | 13 | 13 | 11 | 13 | 4 | 9 | 6 | 5 | 4 | 5 | 4 | 5 | 2 | 4 | 3 | 8 | 7 | 7 | 7 | 12 | 7 | 7 |
| DOU | 8 | 5 | 15 | 11 | 15 | 10 | 14 | 5 | 5 | 6 | 8 | 9 | 11 | 9 | 10 | 2 | 9 | 11 | 8 | 4 | 11 | 20 | 9 | 11 |
| DRV | 28 | 54 | 53 | 45 | 29 | 23 | 41 | 47 | 13 | 11 | 13 | 14 | 43 | 76 | 13 | 11 | 17 | 13 | 24 | 32 | 30 | 38 | 44 | 92 |
| EBR | 5 | 6 | 12 | 8 | 19 | 8 | 14 | 8 | 10 | 8 | 10 | 14 | 9 | 8 | 4 | 11 | 8 | 13 | 9 | 14 | 7 | 14 | 7 | 10 |
| ESK | 12 | 7 | 18 | 18 | 23 | 9 | 14 | 7 | 11 | 11 | 12 | 9 | 9 | 16 | 14 | 6 | 15 | 14 | 14 | 7 | 16 | 37 | 9 | 15 |
| EUA | ||||||||||||||||||||||||
| EYR | 6 | 9 | 13 | 11 | 12 | 7 | 18 | 22 | 7 | 4 | 9 | 4 | 5 | 16 | 5 | 3 | 4 | 3 | 4 | 4 | 16 | 13 | 6 | 7 |
| FCC | 51 | 37 | 58 | 119 | 209 | 93 | 72 | 149 | 65 | 58 | 62 | 48 | 26 | 39 | 74 | 22 | 19 | 27 | 27 | 49 | 47 | 90 | 69 | 79 |
| FRD | 6 | 12 | 17 | 11 | 21 | 13 | 11 | 13 | 5 | 7 | 3 | 14 | 14 | 10 | 14 | 13 | 3 | 8 | 6 | 7 | 8 | 12 | 11 | 9 |
| FRN | 5 | 11 | 11 | 15 | 8 | 12 | 8 | 3 | 5 | 4 | 4 | 6 | 2 | 8 | 2 | 8 | 5 | 8 | 3 | 3 | 5 | 17 | 10 | 7 |
| FUR | 5 | 4 | 13 | 8 | 13 | 11 | 13 | 7 | 4 | 6 | 10 | 7 | 10 | 7 | 9 | 2 | 5 | 8 | 6 | 3 | 12 | 14 | 6 | 12 |
| GCK | ||||||||||||||||||||||||
| GDH | 29 | 21 | 34 | 25 | 69 | 35 | 71 | 33 | 127 | 127 | 99 | 93 | 89 | 45 | 59 | 42 | 73 | 78 | 35 | 67 | 62 | 138 | 47 | 55 |
| GNA | 2 | 6 | 16 | 16 | 11 | 11 | 12 | 18 | 6 | 6 | 4 | 4 | 8 | 11 | 6 | 3 | 1 | 9 | 5 | 3 | 4 | 7 | 5 | 3 |
| GUA | 13 | 13 | 17 | 26 | 21 | 11 | 15 | 7 | 8 | 2 | 5 | 3 | 6 | 6 | 3 | 1 | 1 | 5 | 1 | 2 | 4 | 12 | 14 | 12 |
| GUI | 3 | 7 | 11 | 8 | 8 | 5 | 6 | 4 | 10 | 15 | 21 | 15 | 7 | 8 | 3 | 8 | 8 | 18 | 8 | 4 | 8 | 9 | 7 | 6 |
| GZH | 9 | 15 | 9 | 5 | 7 | 5 | 14 | 10 | 11 | 5 | 3 | 3 | 6 | 5 | 6 | 1 | 1 | 6 | 3 | 4 | 3 | 6 | 3 | 5 |
| HAD | 9 | 5 | 12 | 11 | 18 | 8 | 11 | 4 | 7 | 7 | 6 | 6 | 6 | 11 | 13 | 6 | 9 | 10 | 8 | 5 | 10 | 21 | 6 | 12 |
| HBK | 5 | 5 | 8 | 4 | 12 | 6 | 8 | 9 | 14 | 11 | 8 | 7 | 13 | 4 | 13 | 9 | 2 | 3 | 5 | 5 | 6 | 14 | 6 | 7 |
| HER | 4 | 4 | 7 | 3 | 9 | 5 | 4 | 9 | 13 | 15 | 8 | 8 | 17 | 4 | 14 | 10 | 2 | 3 | 5 | 4 | 5 | 14 | 5 | 7 |
| HLP | 6 | 6 | 19 | 11 | 12 | 9 | 15 | 7 | 14 | 6 | 10 | 15 | 8 | 12 | 9 | 4 | 10 | 9 | 10 | 6 | 25 | 25 | 9 | 17 |
| HON | 4 | 4 | 21 | 21 | 6 | 3 | 11 | 3 | 5 | 2 | 5 | 3 | 3 | 8 | 2 | 1 | 3 | 6 | 7 | 3 | 3 | 6 | 5 | 4 |
| HRB | 3 | 5 | 15 | 8 | 11 | 11 | 12 | 10 | 4 | 9 | 10 | 7 | 12 | 7 | 7 | 4 | 5 | 6 | 6 | 4 | 13 | 15 | 8 | 12 |
| HRN | 30 | 37 | 46 | 55 | 161 | 85 | 60 | 35 | 59 | 70 | 97 | 112 | 51 | 68 | 38 | 32 | 22 | 61 | 156 | 164 | 22 | 251 | 29 | 57 |
| HUA | 4 | 9 | 19 | 13 | 5 | 7 | 6 | 12 | 5 | 5 | 5 | 16 | 19 | 27 | 20 | 6 | 20 | 26 | 7 | 14 | 34 | 12 | 11 | 7 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 53 | 37 | 47 | 22 | 236 | 75 | 96 | 49 | 98 | 129 | 109 | 78 | 62 | 42 | 55 | 40 | 48 | 77 | 76 | 78 | 128 | 187 | 94 | 84 |
| IRT | 8 | 8 | 17 | 11 | 19 | 22 | 17 | 33 | 19 | 7 | 8 | 4 | 10 | 13 | 7 | 3 | 4 | 9 | 10 | 10 | 17 | 10 | 12 | 8 |
| IZN | ||||||||||||||||||||||||
| KAK | 12 | 12 | 7 | 11 | 7 | 3 | 13 | 8 | 11 | 3 | 6 | 5 | 5 | 7 | 4 | 1 | 2 | 5 | 1 | 3 | 2 | 5 | 5 | 3 |
| KDU | 9 | 14 | 12 | 20 | 9 | 4 | 15 | 9 | 8 | 4 | 5 | 3 | 8 | 7 | 5 | 2 | 1 | 6 | 2 | 2 | 2 | 8 | 7 | 3 |
| KMH | ||||||||||||||||||||||||
| KNY | 13 | 14 | 8 | 6 | 7 | 3 | 12 | 9 | 12 | 3 | 6 | 4 | 6 | 8 | 5 | 2 | 2 | 6 | 1 | 3 | 3 | 6 | 6 | 6 |
| KOU | 3 | 7 | 13 | 9 | 6 | 4 | 3 | 11 | 4 | 6 | 6 | 9 | 3 | 10 | 6 | 3 | 1 | 7 | 8 | 9 | 17 | 4 | 6 | 4 |
| LER | 10 | 6 | 18 | 17 | 21 | 8 | 7 | 10 | 12 | 10 | 10 | 10 | 10 | 18 | 10 | 6 | 17 | 11 | 12 | 8 | 18 | 41 | 7 | 12 |
| LRM | 4 | 4 | 15 | 12 | 12 | 4 | 15 | 14 | 11 | 5 | 5 | 4 | 8 | 12 | 7 | 2 | 1 | 8 | 4 | 4 | 5 | 9 | 6 | 4 |
| LVV | 4 | 6 | 16 | 12 | 9 | 8 | 15 | 11 | 8 | 9 | 12 | 10 | 11 | 6 | 7 | 6 | 7 | 5 | 7 | 6 | 15 | 16 | 8 | 13 |
| LYC | ||||||||||||||||||||||||
| LZH | 4 | 7 | 11 | 9 | 13 | 8 | 12 | 21 | 13 | 7 | 5 | 5 | 7 | 6 | 8 | 3 | 2 | 8 | 5 | 5 | 6 | 7 | 4 | 10 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 7 | 13 | 8 | 8 | 3 | 4 | 17 | 15 | 12 | 12 | 10 | 9 | 7 | 9 | 11 | 8 | 16 | 3 | 4 | 9 | 8 | 8 | 5 |
| MCQ | 7 | 9 | 28 | 35 | 16 | 22 | 92 | 32 | 17 | 27 | 17 | 13 | 62 | 177 | 67 | 9 | 3 | 8 | 4 | 17 | 25 | 18 | 30 | 16 |
| MEA | 14 | 24 | 62 | 35 | 44 | 12 | 115 | 73 | 22 | 22 | 7 | 20 | 12 | 15 | 26 | 10 | 19 | 11 | 13 | 16 | 12 | 18 | 39 | 45 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 8 | 13 | 8 | 8 | 9 | 6 | 21 | 13 | 14 | 4 | 7 | 5 | 7 | 11 | 5 | 3 | 3 | 7 | 2 | 5 | 3 | 7 | 7 | 8 |
| NAQ | 38 | 62 | 131 | 144 | 166 | 103 | 95 | 62 | 49 | 33 | 25 | 27 | 25 | 32 | 20 | 17 | 28 | 51 | 41 | 26 | 57 | 181 | 33 | 61 |
| NCK | 3 | 4 | 14 | 7 | 11 | 10 | 11 | 8 | 4 | 8 | 9 | 7 | 11 | 6 | 6 | 3 | 4 | 7 | 6 | 4 | 11 | 13 | 7 | 11 |
| NEW | 11 | 18 | 34 | 20 | 14 | 15 | 18 | 15 | 9 | 6 | 5 | 11 | 6 | 7 | 5 | 7 | 15 | 7 | 11 | 9 | 5 | 18 | 19 | 26 |
| NGK | 5 | 5 | 17 | 9 | 15 | 11 | 15 | 7 | 10 | 6 | 9 | 10 | 10 | 11 | 10 | 3 | 9 | 9 | 8 | 4 | 19 | 23 | 7 | 16 |
| NUR | 15 | 6 | 20 | 11 | 14 | 9 | 13 | 7 | 27 | 8 | 15 | 17 | 10 | 17 | 8 | 4 | 14 | 10 | 12 | 10 | 16 | 16 | 14 | 17 |
| NVS | 2 | 7 | 23 | 16 | 9 | 5 | 12 | 32 | 11 | 7 | 13 | 10 | 10 | 7 | 5 | 5 | 5 | 12 | 11 | 6 | 8 | 13 | 5 | 10 |
| OTT | 10 | 12 | 23 | 12 | 29 | 13 | 16 | 16 | 5 | 7 | 5 | 13 | 9 | 12 | 12 | 8 | 4 | 10 | 11 | 11 | 8 | 19 | 19 | 12 |
| PAF | 22 | 7 | 7 | 14 | 15 | 10 | 28 | 8 | 15 | 6 | 11 | 7 | 5 | 6 | 10 | 2 | 2 | 10 | 20 | 8 | 28 | 17 | 10 | 18 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 13 | 19 | 12 | 9 | 9 | 6 | 18 | 13 | 15 | 6 | 3 | 3 | 8 | 6 | 8 | 2 | 2 | 7 | 4 | 5 | 4 | 7 | 3 | 6 |
| PPT | 2 | 3 | 16 | 13 | 4 | 3 | 12 | 1 | 5 | 3 | 3 | 2 | 2 | 8 | 2 | 1 | 3 | 5 | 6 | 4 | 6 | 9 | 5 | 9 |
| PST | ||||||||||||||||||||||||
| QSB | 4 | 8 | 19 | 12 | 11 | 4 | 9 | 26 | 9 | 11 | 6 | 5 | 16 | 11 | 4 | 7 | 3 | 5 | 6 | 5 | 11 | 12 | 10 | 12 |
| RES | 32 | 21 | 64 | 63 | 34 | 30 | 37 | 19 | 35 | 61 | 23 | 37 | 35 | 28 | 106 | 85 | 98 | 131 | 56 | 78 | 32 | 109 | 96 | 80 |
| SBA | 14 | 13 | 56 | 43 | 37 | 35 | 99 | 63 | 30 | 26 | 20 | 29 | 33 | 40 | 63 | 23 | 27 | 38 | 29 | 42 | 16 | 16 | 57 | 40 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 15 | 25 | 46 | 10 | 32 | 17 | 44 | 61 | 6 | 10 | 6 | 13 | 5 | 9 | 22 | 3 | 13 | 11 | 11 | 11 | 11 | 18 | 20 | 38 |
| SJG | 3 | 7 | 10 | 9 | 8 | 4 | 2 | 9 | 3 | 5 | 1 | 1 | 4 | 9 | 7 | 6 | 3 | 8 | 6 | 3 | 14 | 4 | 5 | 4 |
| SOD | 97 | 8 | 36 | 24 | 23 | 26 | 11 | 17 | 38 | 18 | 25 | 29 | 21 | 31 | 22 | 15 | 18 | 29 | 28 | 33 | 286 | 322 | 42 | 88 |
| SPT | 5 | 6 | 12 | 9 | 13 | 6 | 8 | 7 | 5 | 7 | 9 | 12 | 8 | 4 | 3 | 4 | 7 | 13 | 3 | 4 | 5 | 11 | 7 | 9 |
| STJ | 11 | 8 | 15 | 17 | 9 | 9 | 10 | 8 | 8 | 10 | 9 | 13 | 5 | 12 | 12 | 12 | 7 | 12 | 12 | 8 | 10 | 19 | 13 | 8 |
| SUA | 4 | 9 | 16 | 9 | 10 | 9 | 12 | 16 | 5 | 16 | 10 | 7 | 15 | 4 | 5 | 5 | 3 | 6 | 6 | 4 | 16 | 13 | 9 | 13 |
| TAM | 2 | 7 | 13 | 8 | 12 | 4 | 4 | 25 | 16 | 10 | 7 | 3 | 13 | 13 | 10 | 13 | 9 | 10 | 3 | 4 | 6 | 10 | 8 | 8 |
| TAN | 5 | 5 | 7 | 4 | 9 | 6 | 6 | 9 | 14 | 10 | 7 | 6 | 11 | 3 | 12 | 4 | 2 | 2 | 4 | 4 | 8 | 8 | 5 | 6 |
| TDC | ||||||||||||||||||||||||
| THL | 22 | 12 | 53 | 32 | 34 | 31 | 70 | 28 | 60 | 62 | 37 | 65 | 65 | 75 | 72 | 115 | 91 | 80 | 31 | 55 | 54 | 38 | 44 | 82 |
| THY | 4 | 5 | 16 | 8 | 12 | 11 | 13 | 11 | 5 | 11 | 9 | 6 | 13 | 6 | 7 | 4 | 5 | 8 | 7 | 4 | 13 | 14 | 9 | 12 |
| TRW | 5 | 10 | 11 | 8 | 9 | 7 | 2 | 12 | 5 | 4 | 5 | 5 | 10 | 3 | 3 | 3 | 3 | 6 | 3 | 3 | 11 | 12 | 7 | 5 |
| TSU | 5 | 6 | 9 | 5 | 12 | 3 | 7 | 10 | 11 | 11 | 5 | 5 | 12 | 6 | 8 | 7 | 3 | 3 | 6 | 5 | 5 | 15 | 8 | 6 |
| TUC | 4 | 15 | 12 | 15 | 8 | 12 | 4 | 6 | 6 | 4 | 4 | 6 | 3 | 6 | 4 | 3 | 3 | 5 | 4 | 8 | 3 | 13 | 7 | 7 |
| UPS | 10 | 5 | 19 | 9 | 13 | 7 | 12 | 6 | 23 | 9 | 11 | 14 | 9 | 17 | 8 | 3 | 14 | 9 | 11 | 8 | 16 | 26 | 9 | 16 |
| VAL | 9 | 4 | 11 | 11 | 16 | 7 | 9 | 4 | 7 | 8 | 6 | 4 | 5 | 11 | 12 | 8 | 10 | 10 | 8 | 4 | 8 | 21 | 6 | 10 |
| VIC | 10 | 18 | 27 | 17 | 15 | 14 | 13 | 8 | 7 | 5 | 4 | 9 | 4 | 5 | 4 | 7 | 14 | 8 | 7 | 7 | 6 | 16 | 16 | 22 |
| VSS | 3 | 8 | 11 | 7 | 6 | 3 | 4 | 12 | 3 | 4 | 9 | 11 | 8 | 3 | 4 | 10 | 7 | 11 | 3 | 3 | 8 | 10 | 7 | 4 |
| WNG | 6 | 5 | 19 | 11 | 17 | 11 | 16 | 8 | 14 | 7 | 8 | 12 | 8 | 14 | 8 | 4 | 12 | 9 | 9 | 5 | 23 | 30 | 9 | 18 |
| YKC | 40 | 24 | 119 | 71 | 34 | 22 | 139 | 131 | 85 | 128 | 43 | 58 | 56 | 157 | 178 | 37 | 28 | 21 | 14 | 52 | 17 | 97 | 91 | 81 |
- Date modified: