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 | 2 | 2 | 6 | 11 | 15 | 33 | 36 | 35 | 12 | 24 | 43 | 36 | 14 | 6 | 7 | 3 | 6 | 6 | 11 | 9 | 14 | 15 | 10 | 10 |
| ABG | 4 | 10 | 7 | 17 | 10 | 10 | 14 | 13 | 20 | 12 | 7 | 6 | 8 | 6 | 5 | 7 | 8 | 7 | 8 | 8 | 14 | 10 | 10 | 10 |
| ABK | 13 | 9 | 21 | 27 | 29 | 13 | 15 | 21 | 20 | 22 | 11 | 30 | 11 | 43 | 31 | 16 | 45 | 40 | 48 | 66 | 210 | 193 | 125 | 126 |
| AIA | 4 | 3 | 3 | 13 | 14 | 7 | 8 | 8 | 11 | 17 | 4 | 8 | 4 | 4 | 8 | 2 | 9 | 4 | 7 | 4 | 6 | 10 | 13 | 8 |
| AMS | 1 | 3 | 5 | 3 | 6 | 5 | 15 | 15 | 13 | 7 | 9 | 10 | 6 | 4 | 2 | 3 | 3 | 4 | 8 | 7 | 5 | 5 | 4 | 6 |
| API | 5 | 6 | 8 | 7 | 6 | 3 | 5 | 4 | 9 | 6 | 4 | 2 | 5 | 3 | 3 | 5 | 4 | 4 | 5 | 3 | 6 | 5 | 8 | 4 |
| AQU | 1 | 2 | 3 | 3 | 2 | 5 | 7 | 7 | 5 | 6 | 4 | 10 | 6 | 6 | 1 | 3 | 5 | 4 | 11 | 8 | 15 | 16 | 11 | 15 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 2 | 6 | 6 | 3 | 3 | 9 | 2 | 5 | 6 | 3 | 2 | 4 | 3 | 5 | 6 | 8 | 6 | 10 | 8 | 8 | 5 | 7 | 11 |
| ASP | 5 | 3 | 2 | 6 | 8 | 4 | 8 | 8 | 8 | 6 | 6 | 4 | 3 | 3 | 5 | 3 | 4 | 3 | 16 | 11 | 3 | 4 | 5 | 13 |
| BDV | 2 | 2 | 2 | 2 | 3 | 6 | 6 | 11 | 6 | 7 | 4 | 6 | 6 | 5 | 3 | 5 | 7 | 4 | 13 | 8 | 15 | 19 | 14 | 14 |
| BEL | 4 | 4 | 3 | 4 | 3 | 9 | 8 | 11 | 8 | 6 | 6 | 7 | 9 | 8 | 9 | 9 | 11 | 7 | 15 | 12 | 15 | 22 | 19 | 12 |
| BFE | 4 | 3 | 6 | 5 | 4 | 8 | 8 | 11 | 9 | 8 | 8 | 8 | 8 | 11 | 13 | 8 | 19 | 9 | 20 | 17 | 16 | 29 | 27 | 12 |
| BFO | ||||||||||||||||||||||||
| BLC | 47 | 32 | 33 | 44 | 40 | 42 | 24 | 24 | 121 | 190 | 75 | 68 | 33 | 66 | 58 | 46 | 44 | 44 | 43 | 46 | 123 | 75 | 69 | 106 |
| BMT | 11 | 8 | 4 | 7 | 19 | 16 | 14 | 11 | 14 | 14 | 7 | 5 | 5 | 5 | 4 | 4 | 7 | 6 | 8 | 15 | 4 | 4 | 8 | 14 |
| BNG | 1 | 2 | 6 | 6 | 6 | 4 | 20 | 9 | 12 | 7 | 8 | 14 | 9 | 12 | 5 | 4 | 6 | 5 | 13 | 10 | 14 | 13 | 11 | 12 |
| BOU | 3 | 3 | 4 | 7 | 5 | 4 | 11 | 13 | 15 | 20 | 6 | 3 | 6 | 3 | 11 | 7 | 7 | 2 | 7 | 13 | 6 | 12 | 8 | 12 |
| BOX | 4 | 3 | 8 | 8 | 5 | 10 | 11 | 10 | 10 | 12 | 11 | 14 | 7 | 15 | 16 | 10 | 19 | 9 | 18 | 18 | 8 | 13 | 11 | 17 |
| BRW | 42 | 28 | 47 | 79 | 109 | 94 | 70 | 61 | 402 | 228 | 97 | 44 | 42 | 58 | 68 | 117 | 96 | 193 | 212 | 397 | 47 | 56 | 45 | 40 |
| BSL | 3 | 2 | 3 | 9 | 9 | 4 | 11 | 9 | 10 | 15 | 6 | 4 | 3 | 12 | 11 | 10 | 8 | 2 | 5 | 7 | 8 | 7 | 7 | 9 |
| CBB | 28 | 22 | 51 | 53 | 35 | 35 | 37 | 21 | 49 | 32 | 53 | 46 | 23 | 23 | 85 | 61 | 55 | 140 | 148 | 90 | 67 | 127 | 80 | 60 |
| CLF | 2 | 2 | 3 | 3 | 2 | 5 | 9 | 9 | 5 | 7 | 4 | 5 | 5 | 6 | 3 | 5 | 9 | 5 | 14 | 7 | 18 | 17 | 13 | 19 |
| CMO | 20 | 17 | 26 | 38 | 33 | 36 | 38 | 53 | 179 | 81 | 68 | 55 | 29 | 66 | 74 | 59 | 23 | 21 | 18 | 47 | 26 | 10 | 19 | 52 |
| CNB | 4 | 2 | 4 | 10 | 15 | 8 | 11 | 11 | 10 | 12 | 8 | 5 | 4 | 4 | 7 | 6 | 2 | 5 | 16 | 14 | 3 | 8 | 5 | 9 |
| CSY | ||||||||||||||||||||||||
| CTA | 2 | 6 | 3 | 4 | 9 | 11 | 6 | 10 | 10 | 7 | 6 | 4 | 4 | 3 | 5 | 3 | 4 | 3 | 13 | 10 | 4 | 4 | 3 | 11 |
| CZT | 3 | 2 | 4 | 3 | 10 | 7 | 8 | 15 | 20 | 6 | 3 | 6 | 7 | 5 | 4 | 3 | 3 | 6 | 6 | 12 | 6 | 16 | 10 | 12 |
| DLR | 2 | 2 | 3 | 8 | 7 | 4 | 11 | 10 | 11 | 18 | 6 | 3 | 9 | 3 | 9 | 4 | 6 | 3 | 3 | 8 | 5 | 7 | 7 | 8 |
| DOU | 2 | 2 | 3 | 5 | 3 | 7 | 9 | 10 | 7 | 8 | 5 | 6 | 6 | 6 | 5 | 7 | 11 | 6 | 14 | 8 | 19 | 20 | 16 | 21 |
| DRV | 40 | 33 | 29 | 28 | 24 | 43 | 24 | 10 | 38 | 39 | 19 | 15 | 10 | 9 | 8 | 26 | 18 | 8 | 47 | 76 | 31 | 42 | 26 | 29 |
| EBR | 2 | 2 | 4 | 3 | 9 | 8 | 12 | 12 | 9 | 9 | 6 | 13 | 9 | 10 | 4 | 9 | 8 | 6 | 18 | 16 | 19 | 15 | 13 | 18 |
| ESK | 3 | 3 | 4 | 8 | 6 | 9 | 11 | 13 | 8 | 16 | 8 | 8 | 9 | 12 | 12 | 8 | 22 | 10 | 20 | 19 | 27 | 26 | 22 | 22 |
| EUA | ||||||||||||||||||||||||
| EYR | 3 | 3 | 4 | 6 | 14 | 3 | 9 | 7 | 17 | 10 | 8 | 5 | 6 | 3 | 4 | 6 | 3 | 5 | 8 | 10 | 14 | 14 | 4 | 3 |
| FCC | 24 | 18 | 21 | 102 | 146 | 75 | 27 | 212 | 106 | 160 | 78 | 57 | 88 | 43 | 18 | 15 | 28 | 25 | 25 | 29 | 101 | 43 | 62 | 85 |
| FRD | 3 | 2 | 3 | 9 | 13 | 3 | 9 | 6 | 9 | 8 | 5 | 6 | 6 | 12 | 15 | 17 | 16 | 9 | 4 | 8 | 9 | 15 | 11 | 12 |
| FRN | 5 | 6 | 4 | 5 | 5 | 5 | 10 | 15 | 15 | 18 | 5 | 3 | 8 | 6 | 2 | 3 | 9 | 10 | 8 | 9 | 3 | 6 | 6 | 7 |
| FUR | 2 | 2 | 2 | 3 | 2 | 5 | 7 | 11 | 5 | 6 | 5 | 6 | 5 | 6 | 3 | 4 | 8 | 5 | 13 | 8 | 16 | 19 | 14 | 15 |
| GCK | ||||||||||||||||||||||||
| GDH | 17 | 10 | 20 | 35 | 32 | 25 | 34 | 31 | 108 | 145 | 76 | 94 | 61 | 38 | 64 | 44 | 141 | 216 | 44 | 45 | 55 | 67 | 68 | 38 |
| GNA | 4 | 9 | 10 | 10 | 9 | 2 | 8 | 3 | 3 | 6 | 4 | 4 | 3 | 2 | 3 | 3 | 4 | 2 | 17 | 13 | 2 | 4 | 8 | 2 |
| GUA | 15 | 3 | 6 | 14 | 14 | 18 | 10 | 13 | 12 | 8 | 4 | 3 | 4 | 4 | 2 | 3 | 4 | 1 | 7 | 6 | 6 | 8 | 21 | 11 |
| GUI | 2 | 3 | 7 | 4 | 5 | 5 | 10 | 7 | 9 | 12 | 4 | 4 | 11 | 8 | 4 | 10 | 12 | 10 | 18 | 9 | 12 | 6 | 8 | 15 |
| GZH | 7 | 8 | 11 | 6 | 8 | 5 | 10 | 20 | 15 | 8 | 4 | 3 | 3 | 4 | 2 | 3 | 5 | 3 | 7 | 8 | 3 | 5 | 2 | 7 |
| HAD | 2 | 3 | 4 | 5 | 3 | 6 | 9 | 11 | 5 | 10 | 5 | 4 | 5 | 6 | 6 | 7 | 14 | 6 | 16 | 11 | 21 | 17 | 15 | 20 |
| HBK | 1 | 2 | 6 | 7 | 4 | 8 | 11 | 6 | 10 | 7 | 15 | 13 | 3 | 4 | 1 | 10 | 6 | 6 | 13 | 11 | 15 | 16 | 10 | 10 |
| HER | 2 | 2 | 4 | 6 | 3 | 7 | 9 | 9 | 8 | 7 | 6 | 12 | 3 | 2 | 3 | 8 | 6 | 5 | 12 | 9 | 15 | 14 | 8 | 9 |
| HLP | 3 | 3 | 3 | 4 | 4 | 11 | 9 | 12 | 10 | 6 | 7 | 9 | 5 | 10 | 11 | 8 | 17 | 8 | 17 | 11 | 14 | 25 | 25 | 10 |
| HON | 5 | 3 | 2 | 4 | 6 | 1 | 6 | 4 | 8 | 7 | 3 | 2 | 5 | 5 | 2 | 3 | 4 | 2 | 3 | 5 | 6 | 4 | 9 | 3 |
| HRB | 2 | 2 | 2 | 3 | 3 | 5 | 7 | 12 | 7 | 9 | 6 | 8 | 5 | 7 | 3 | 5 | 8 | 4 | 13 | 8 | 15 | 19 | 14 | 13 |
| HRN | 30 | 17 | 34 | 43 | 46 | 27 | 29 | 31 | 33 | 81 | 46 | 65 | 30 | 43 | 88 | 20 | 40 | 34 | 62 | 32 | 54 | 43 | 30 | 29 |
| HUA | 1 | 2 | 4 | 8 | 9 | 2 | 8 | 5 | 5 | 6 | 4 | 9 | 45 | 47 | 42 | 13 | 7 | 41 | 46 | 37 | 7 | 14 | 8 | 11 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 96 | 34 | 42 | 330 | 170 | 49 | 55 | 50 | 127 | 113 | 62 | 95 | 73 | 47 | 23 | 25 | 45 | 84 | 76 | 123 | 49 | 95 | 97 | 73 |
| IRT | 8 | 14 | 10 | 8 | 10 | 23 | 12 | 11 | 8 | 22 | 6 | 7 | 5 | 7 | 5 | 5 | 5 | 7 | 8 | 20 | 3 | 6 | 10 | 10 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 6 | 15 | 12 | 11 | 5 | 9 | 14 | 13 | 9 | 5 | 3 | 5 | 4 | 3 | 2 | 5 | 3 | 6 | 10 | 2 | 7 | 2 | 2 |
| KDU | 3 | 8 | 3 | 6 | 7 | 7 | 8 | 18 | 12 | 4 | 4 | 3 | 4 | 3 | 4 | 3 | 4 | 2 | 12 | 8 | 3 | 6 | 7 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 6 | 17 | 12 | 13 | 3 | 9 | 18 | 18 | 11 | 6 | 4 | 5 | 4 | 3 | 3 | 5 | 4 | 7 | 10 | 2 | 9 | 4 | 6 |
| KOU | 1 | 1 | 5 | 6 | 7 | 3 | 7 | 3 | 3 | 6 | 2 | 7 | 20 | 14 | 8 | 3 | 7 | 9 | 20 | 3 | 3 | 7 | 6 | 8 |
| LER | 3 | 2 | 6 | 8 | 11 | 9 | 9 | 15 | 8 | 10 | 8 | 8 | 10 | 15 | 16 | 6 | 28 | 13 | 17 | 22 | 15 | 35 | 25 | 14 |
| LRM | 2 | 5 | 5 | 8 | 10 | 2 | 8 | 9 | 4 | 7 | 4 | 4 | 3 | 3 | 3 | 3 | 5 | 2 | 16 | 13 | 4 | 4 | 9 | 3 |
| LVV | 2 | 3 | 3 | 5 | 5 | 7 | 7 | 12 | 10 | 9 | 4 | 10 | 9 | 9 | 6 | 6 | 10 | 8 | 13 | 8 | 14 | 18 | 16 | 13 |
| LYC | ||||||||||||||||||||||||
| LZH | 9 | 7 | 1 | 8 | 20 | 11 | 15 | 13 | 17 | 13 | 5 | 4 | 5 | 5 | 3 | 4 | 7 | 5 | 7 | 13 | 4 | 5 | 4 | 14 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 2 | 7 | 5 | 4 | 4 | 10 | 4 | 14 | 16 | 16 | 9 | 5 | 12 | 11 | 10 | 9 | 8 | 15 | 9 | 10 | 5 | 8 | 13 |
| MCQ | 7 | 7 | 9 | 14 | 15 | 13 | 18 | 12 | 65 | 48 | 40 | 28 | 17 | 32 | 55 | 38 | 12 | 5 | 10 | 24 | 9 | 15 | 12 | 17 |
| MEA | 8 | 9 | 13 | 11 | 8 | 7 | 13 | 28 | 77 | 51 | 16 | 15 | 13 | 15 | 13 | 16 | 22 | 6 | 14 | 24 | 20 | 24 | 27 | 42 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 7 | 7 | 17 | 12 | 12 | 9 | 12 | 12 | 12 | 13 | 7 | 5 | 5 | 5 | 4 | 3 | 7 | 6 | 9 | 13 | 4 | 9 | 6 | 6 |
| NAQ | 71 | 80 | 174 | 111 | 199 | 30 | 22 | 57 | 38 | 78 | 13 | 10 | 8 | 10 | 11 | 14 | 51 | 20 | 50 | 73 | 105 | 64 | 109 | 92 |
| NCK | 2 | 2 | 2 | 2 | 3 | 5 | 6 | 10 | 6 | 9 | 5 | 6 | 5 | 6 | 3 | 4 | 7 | 5 | 12 | 8 | 14 | 17 | 13 | 13 |
| NEW | 5 | 5 | 7 | 7 | 7 | 5 | 14 | 19 | 28 | 21 | 10 | 6 | 10 | 4 | 12 | 11 | 15 | 5 | 7 | 20 | 8 | 13 | 13 | 22 |
| NGK | 3 | 3 | 2 | 3 | 4 | 7 | 7 | 10 | 8 | 6 | 5 | 7 | 7 | 6 | 7 | 6 | 13 | 7 | 16 | 10 | 16 | 25 | 22 | 13 |
| NUR | 3 | 4 | 8 | 8 | 7 | 9 | 9 | 14 | 13 | 10 | 9 | 13 | 9 | 20 | 19 | 10 | 24 | 8 | 21 | 17 | 9 | 19 | 21 | 12 |
| NVS | 3 | 9 | 13 | 14 | 6 | 4 | 10 | 15 | 5 | 13 | 6 | 6 | 6 | 7 | 7 | 5 | 11 | 7 | 11 | 18 | 3 | 6 | 4 | 6 |
| OTT | 5 | 3 | 5 | 10 | 14 | 5 | 10 | 11 | 10 | 5 | 7 | 5 | 7 | 14 | 13 | 7 | 17 | 17 | 9 | 15 | 17 | 20 | 15 | 19 |
| PAF | 3 | 3 | 5 | 7 | 16 | 3 | 13 | 15 | 17 | 11 | 9 | 9 | 10 | 7 | 5 | 5 | 4 | 5 | 6 | 9 | 21 | 12 | 12 | 18 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 8 | 10 | 10 | 9 | 12 | 6 | 12 | 23 | 21 | 9 | 5 | 4 | 4 | 4 | 3 | 4 | 6 | 4 | 8 | 9 | 4 | 7 | 4 | 7 |
| PPT | 1 | 1 | 2 | 4 | 5 | 4 | 5 | 5 | 8 | 7 | 3 | 1 | 4 | 4 | 3 | 6 | 6 | 5 | 1 | 5 | 7 | 8 | 8 | 9 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 2 | 3 | 6 | 5 | 7 | 14 | 7 | 4 | 8 | 4 | 5 | 6 | 9 | 6 | 5 | 8 | 5 | 12 | 11 | 16 | 18 | 14 | 13 |
| RES | 45 | 14 | 13 | 13 | 18 | 11 | 26 | 25 | 33 | 37 | 59 | 54 | 26 | 57 | 67 | 36 | 175 | 125 | 85 | 121 | 31 | 23 | 33 | 24 |
| SBA | 23 | 24 | 16 | 21 | 30 | 27 | 19 | 11 | 58 | 48 | 18 | 15 | 12 | 17 | 19 | 16 | 51 | 34 | 28 | 55 | 23 | 22 | 28 | 24 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 9 | 7 | 14 | 11 | 11 | 8 | 15 | 7 | 30 | 12 | 9 | 9 | 11 | 4 | 11 | 5 | 16 | 13 | 11 | 22 | 9 | 11 | 12 | 20 |
| SJG | 1 | 1 | 4 | 6 | 7 | 2 | 6 | 3 | 3 | 5 | 3 | 3 | 16 | 9 | 5 | 2 | 4 | 3 | 13 | 1 | 2 | 9 | 5 | 5 |
| SOD | 4 | 5 | 17 | 17 | 18 | 12 | 11 | 17 | 16 | 28 | 10 | 26 | 11 | 35 | 26 | 17 | 36 | 23 | 37 | 54 | 167 | 116 | 91 | 127 |
| SPT | 1 | 2 | 5 | 3 | 4 | 5 | 9 | 8 | 3 | 8 | 3 | 8 | 8 | 4 | 2 | 3 | 6 | 4 | 16 | 9 | 17 | 12 | 11 | 18 |
| STJ | 10 | 24 | 19 | 7 | 22 | 17 | 22 | 10 | 14 | |||||||||||||||
| SUA | 2 | 3 | 3 | 3 | 6 | 5 | 7 | 13 | 5 | 12 | 10 | 8 | 2 | 8 | 4 | 4 | 7 | 5 | 12 | 6 | 14 | 18 | 16 | 12 |
| TAM | 1 | 2 | 6 | 5 | 4 | 4 | 11 | 3 | 10 | 9 | 4 | 2 | 6 | 6 | 7 | 7 | 13 | 6 | 14 | 11 | 14 | 12 | 11 | 15 |
| TAN | 1 | 2 | 4 | 6 | 7 | 10 | 18 | 3 | 15 | 15 | 13 | 9 | 2 | 3 | 2 | 6 | 5 | 6 | 9 | 9 | 13 | 14 | 6 | 7 |
| TDC | ||||||||||||||||||||||||
| THL | 29 | 16 | 17 | 11 | 35 | 19 | 21 | 13 | 16 | 11 | 38 | 31 | 13 | 49 | 64 | 118 | 131 | 34 | 37 | 40 | 44 | 38 | 40 | 35 |
| THY | 2 | 2 | 2 | 3 | 3 | 5 | 7 | 11 | 6 | 10 | 7 | 6 | 5 | 7 | 3 | 5 | 7 | 5 | 13 | 10 | 15 | 19 | 14 | 14 |
| TRW | 3 | 3 | 6 | 10 | 10 | 2 | 8 | 6 | 5 | 11 | 2 | 7 | 9 | 7 | 5 | 4 | 10 | 7 | 11 | 8 | 4 | 4 | 7 | 8 |
| TSU | 1 | 3 | 6 | 7 | 3 | 6 | 15 | 3 | 8 | 5 | 13 | 11 | 3 | 6 | 4 | 7 | 9 | 5 | 13 | 12 | 16 | 14 | 11 | 12 |
| TUC | 3 | 3 | 3 | 7 | 5 | 4 | 11 | 13 | 13 | 19 | 6 | 3 | 10 | 7 | 6 | 6 | 8 | 3 | 6 | 6 | 6 | 6 | 5 | 8 |
| UPS | 2 | 3 | 6 | 6 | 7 | 8 | 7 | 13 | 11 | 6 | 7 | 11 | 12 | 16 | 16 | 9 | 23 | 9 | 18 | 15 | 11 | 26 | 25 | 9 |
| VAL | 2 | 3 | 4 | 6 | 3 | 6 | 9 | 11 | 5 | 11 | 5 | 5 | 4 | 6 | 5 | 7 | 17 | 7 | 15 | 12 | 21 | 12 | 14 | 20 |
| VIC | 3 | 4 | 7 | 6 | 7 | 5 | 12 | 18 | 22 | 18 | 7 | 6 | 10 | 3 | 8 | 10 | 13 | 6 | 7 | 17 | 6 | 10 | 11 | 16 |
| VSS | 2 | 2 | 7 | 8 | 7 | 2 | 8 | 4 | 4 | 8 | 2 | 5 | 10 | 12 | 9 | 10 | 14 | 14 | 18 | 6 | 9 | 3 | 7 | 10 |
| WNG | 3 | 3 | 3 | 4 | 6 | 9 | 8 | 11 | 9 | 8 | 6 | 8 | 6 | 8 | 10 | 7 | 17 | 8 | 18 | 16 | 18 | 30 | 28 | 12 |
| YKC | 16 | 18 | 36 | 20 | 32 | 43 | 39 | 466 | 252 | 239 | 73 | 45 | 59 | 76 | 61 | 42 | 33 | 14 | 21 | 29 | 52 | 51 | 69 | 89 |
- Date modified: