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 | 5 | 6 | 15 | 5 | 4 | 2 | 8 | 8 | 3 | 3 | 10 | 7 | 5 | 7 | 5 | 3 | 6 | 5 | 2 | 4 | 6 | 6 |
| ABG | 5 | 10 | 5 | 9 | 18 | 26 | 10 | 2 | 9 | 12 | 10 | 10 | 1 | 2 | 2 | 2 | 2 | 4 | 5 | 1 | 1 | 3 | 4 | 6 |
| ABK | 15 | 8 | 8 | 14 | 11 | 17 | 34 | 17 | 17 | 45 | 9 | 9 | 12 | 16 | 12 | 11 | 6 | 19 | 29 | 54 | 124 | 139 | 160 | 60 |
| AIA | 3 | 5 | 20 | 10 | 11 | 10 | 12 | 15 | 17 | 29 | 3 | 6 | 2 | 3 | 2 | 8 | 12 | 8 | 6 | 13 | 13 | 14 | 17 | 17 |
| AMS | 2 | 1 | 3 | 3 | 10 | 4 | 12 | 17 | 13 | 7 | 11 | 11 | 5 | 4 | 3 | 3 | 3 | 1 | 21 | 17 | 16 | 18 | 11 | 8 |
| API | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 |
| AQU | 1 | 2 | 4 | 6 | 10 | 8 | 4 | 2 | 10 | 18 | 11 | 10 | 7 | 3 | 8 | 12 | 4 | 4 | 8 | 11 | 4 | 7 | 5 | 11 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 1 | 2 | 3 | 2 | 4 | 2 | 8 | 14 | 15 | 2 | 4 | 1 | 5 | 10 | 13 | 5 | 1 | 1 | 4 | 2 | 2 | 5 | 2 |
| ASP | 6 | 8 | 12 | 10 | 9 | 8 | 3 | 12 | 10 | 6 | 4 | 1 | 2 | 2 | 2 | 4 | 3 | 3 | 10 | 8 | 2 | 6 | 13 | 11 |
| BDV | 2 | 3 | 5 | 9 | 9 | 10 | 8 | 3 | 12 | 14 | 11 | 10 | 9 | 6 | 6 | 10 | 6 | 3 | 10 | 15 | 6 | 9 | 7 | 15 |
| BEL | 3 | 4 | 5 | 12 | 7 | 9 | 9 | 7 | 15 | 17 | 9 | 8 | 5 | 5 | 7 | 7 | 6 | 5 | 13 | 17 | 8 | 6 | 11 | 18 |
| BFE | 4 | 5 | 9 | 11 | 9 | 11 | 13 | 5 | 11 | 17 | 10 | 11 | 8 | 4 | 8 | 9 | 6 | 5 | 13 | 19 | 13 | 14 | 11 | 24 |
| BFO | ||||||||||||||||||||||||
| BLC | 28 | 26 | 40 | 42 | 39 | 54 | 38 | 37 | 49 | 69 | 74 | 46 | 26 | 40 | 40 | 43 | 39 | 32 | 32 | 98 | 108 | 44 | 59 | 53 |
| BMT | 1 | 1 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
| BNG | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 0 | 0 | 1 | 0 |
| BOU | 6 | 3 | 4 | 10 | 15 | 7 | 6 | 9 | 17 | 7 | 4 | 9 | 7 | 8 | 9 | 11 | 7 | 23 | 15 | 3 | 2 | 2 | 7 | 4 |
| BOX | 4 | 3 | 7 | 6 | 10 | 5 | 17 | 10 | 18 | 17 | 9 | 7 | 5 | 7 | 6 | 6 | 7 | 3 | 24 | 23 | 12 | 20 | 25 | 19 |
| BRW | 22 | 25 | 16 | 27 | 28 | 16 | 65 | 82 | 187 | 183 | 79 | 53 | 23 | 40 | 25 | 85 | 36 | 56 | 74 | 165 | 34 | 50 | 31 | 67 |
| BSL | 2 | 2 | 7 | 6 | 11 | 5 | 5 | 10 | 14 | 7 | 3 | 6 | 15 | 13 | 15 | 25 | 11 | 16 | 13 | 9 | 4 | 6 | 7 | 5 |
| CBB | 24 | 34 | 48 | 49 | 49 | 15 | 35 | 34 | 39 | 49 | 35 | 18 | 59 | 43 | 33 | 44 | 61 | 61 | 54 | 148 | 112 | 113 | 107 | 86 |
| CLF | 1 | 3 | 7 | 8 | 8 | 12 | 9 | 5 | 7 | 19 | 14 | 9 | 9 | 8 | 8 | 11 | 6 | 4 | 10 | 12 | 7 | 16 | 7 | 12 |
| CMO | 7 | 7 | 7 | 11 | 11 | 5 | 15 | 23 | 133 | 44 | 22 | 25 | 24 | 10 | 22 | 16 | 18 | 15 | 41 | 28 | 12 | 31 | 11 | 28 |
| CNB | 7 | 10 | 8 | 6 | 5 | 3 | 7 | 12 | 8 | 7 | 4 | 3 | 3 | 2 | 6 | 3 | 5 | 5 | 18 | 12 | 5 | 4 | 7 | 7 |
| CSY | ||||||||||||||||||||||||
| CTA | 13 | 15 | 8 | 5 | 9 | 2 | 7 | 13 | 5 | 4 | 2 | 2 | 1 | 2 | 3 | 2 | 4 | 4 | 10 | 6 | 3 | 7 | 13 | 4 |
| CZT | 2 | 2 | 8 | 8 | 17 | 13 | 8 | 11 | 21 | 13 | 5 | 7 | 6 | 5 | 4 | 2 | 3 | 4 | 6 | 6 | 17 | 11 | 10 | 17 |
| DLR | 2 | 1 | 3 | 6 | 9 | 5 | 3 | 5 | 9 | 5 | 2 | 5 | 10 | 11 | 10 | 18 | 15 | 16 | 10 | 3 | 3 | 2 | 4 | 2 |
| DOU | 2 | 4 | 8 | 8 | 10 | 11 | 9 | 6 | 9 | 19 | 11 | 9 | 10 | 8 | 7 | 11 | 5 | 4 | 11 | 14 | 9 | 17 | 8 | 15 |
| DRV | 46 | 43 | 32 | 48 | 33 | 53 | 39 | 27 | 40 | 40 | 36 | 25 | 10 | 10 | 19 | 22 | 17 | 11 | 79 | 56 | 30 | 21 | 39 | 60 |
| EBR | 0 | 0 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 |
| ESK | 2 | 4 | 11 | 12 | 11 | 12 | 10 | 11 | 12 | 21 | 12 | 9 | 10 | 10 | 7 | 6 | 4 | 4 | 11 | 5 | 13 | 30 | 10 | 14 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 7 | 3 | 8 | 5 | 8 | 4 | 14 | 12 | 20 | 7 | 6 | 3 | 4 | 6 | 9 | 6 | 5 | 15 | 14 | 11 | 3 | 5 | 5 |
| FCC | 11 | 13 | 13 | 76 | 90 | 50 | 42 | 149 | 188 | 120 | 88 | 32 | 23 | 19 | 24 | 18 | 17 | 24 | 28 | 48 | 48 | 18 | 21 | 24 |
| FRD | 3 | 4 | 12 | 6 | 11 | 3 | 8 | 13 | 17 | 13 | 5 | 7 | 9 | 12 | 13 | 21 | 7 | 14 | 8 | 8 | 5 | 7 | 9 | 8 |
| FRN | 3 | 3 | 3 | 7 | 7 | 4 | 4 | 6 | 10 | 9 | 4 | 3 | 6 | 9 | 9 | 5 | 3 | 20 | 25 | 6 | 4 | 5 | 3 | 6 |
| FUR | 2 | 3 | 6 | 8 | 10 | 11 | 7 | 3 | 11 | 17 | 10 | 10 | 11 | 6 | 8 | 10 | 6 | 3 | 11 | 15 | 6 | 10 | 6 | 14 |
| GCK | ||||||||||||||||||||||||
| GDH | 22 | 16 | 15 | 28 | 38 | 19 | 34 | 30 | 92 | 115 | 79 | 110 | 53 | 72 | 74 | 25 | 30 | 48 | 20 | 40 | 105 | 44 | 58 | 31 |
| GNA | 11 | 6 | 2 | 11 | 14 | 12 | 10 | 5 | 10 | 11 | 8 | 3 | 4 | 4 | 6 | 12 | 6 | 3 | 14 | 20 | 6 | 16 | 12 | 13 |
| GUA | 17 | 11 | 5 | 3 | 10 | 10 | 7 | 2 | 9 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 4 | 4 | 4 | 2 | 11 | 12 | 4 |
| GUI | 2 | 2 | 2 | 3 | 4 | 6 | 3 | 5 | 5 | 10 | 12 | 14 | 16 | 13 | 5 | 15 | 9 | 9 | 10 | 6 | 5 | 8 | 3 | 2 |
| GZH | 1 | 0 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 0 | 1 | 2 | 0 |
| HAD | 2 | 3 | 8 | 9 | 10 | 11 | 6 | 8 | 9 | 16 | 14 | 11 | 8 | 10 | 6 | 8 | 5 | 2 | 9 | 8 | 7 | 23 | 7 | 10 |
| HBK | 2 | 2 | 4 | 4 | 5 | 17 | 16 | 7 | 16 | 17 | 11 | 7 | 4 | 3 | 7 | 7 | 4 | 3 | 3 | 5 | 4 | 8 | 8 | 8 |
| HER | 2 | 1 | 6 | 4 | 8 | 6 | 14 | 13 | 8 | 10 | 16 | 14 | 3 | 3 | 6 | 8 | 5 | 3 | 3 | 5 | 4 | 12 | 8 | 7 |
| HLP | 3 | 4 | 6 | 10 | 9 | 9 | 11 | 5 | 16 | 14 | 11 | 11 | 3 | 9 | 8 | 7 | 6 | 4 | 15 | 15 | 10 | 9 | 18 | 15 |
| HON | 10 | 5 | 4 | 4 | 3 | 2 | 3 | 5 | 4 | 3 | 3 | 2 | 3 | 4 | 3 | 1 | 14 | 12 | 3 | 7 | 14 | 27 | 12 | 3 |
| HRB | 2 | 4 | 5 | 10 | 8 | 8 | 7 | 5 | 11 | 16 | 11 | 9 | 5 | 6 | 7 | 7 | 7 | 4 | 12 | 15 | 6 | 6 | 8 | 14 |
| HRN | 36 | 53 | 31 | 71 | 63 | 54 | 83 | 71 | 41 | 87 | 49 | 42 | 39 | 73 | 60 | 15 | 49 | 32 | 35 | 54 | 31 | 108 | 68 | 54 |
| HUA | 2 | 1 | 1 | 3 | 1 | 4 | 2 | 2 | 3 | 7 | 2 | 8 | 8 | 13 | 9 | 10 | 5 | 6 | 4 | 7 | 11 | 2 | 6 | 6 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 71 | 30 | 63 | 136 | 70 | 54 | 65 | 28 | 85 | 105 | 81 | 82 | 74 | 37 | 57 | 13 | 56 | 45 | 116 | 71 | 36 | 92 | 81 | 65 |
| IRT | 3 | 3 | 7 | 16 | 18 | 18 | 11 | 6 | 4 | 12 | 9 | 4 | 4 | 2 | 5 | 2 | 3 | 11 | 15 | 7 | 6 | 8 | 10 | 15 |
| IZN | ||||||||||||||||||||||||
| KAK | 2 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 1 | 1 |
| KDU | 6 | 7 | 12 | 13 | 8 | 5 | 2 | 7 | 8 | 4 | 2 | 1 | 2 | 1 | 2 | 3 | 3 | 3 | 6 | 6 | 1 | 5 | 17 | 11 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 3 | 3 | 2 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| KOU | 1 | 2 | 2 | 1 | 1 | 4 | 2 | 2 | 5 | 6 | 7 | 8 | 9 | 10 | 9 | 6 | 10 | 5 | 4 | 10 | 5 | 2 | 2 | 2 |
| LER | 2 | 5 | 11 | 13 | 11 | 11 | 10 | 10 | 13 | 24 | 9 | 7 | 8 | 9 | 6 | 5 | 2 | 8 | 10 | 5 | 23 | 44 | 13 | 19 |
| LRM | 11 | 7 | 3 | 11 | 13 | 9 | 12 | 6 | 9 | 11 | 8 | 4 | 3 | 3 | 3 | 8 | 4 | 4 | 8 | 14 | 6 | 12 | 9 | 13 |
| LVV | 2 | 4 | 5 | 12 | 6 | 10 | 7 | 8 | 16 | 16 | 11 | 6 | 3 | 7 | 7 | 8 | 6 | 4 | 15 | 16 | 7 | 5 | 12 | 14 |
| LYC | ||||||||||||||||||||||||
| LZH | 11 | 4 | 10 | 19 | 18 | 14 | 6 | 4 | 7 | 12 | 3 | 3 | 4 | 4 | 3 | 3 | 1 | 8 | 8 | 6 | 4 | 5 | 15 | 11 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 1 | 2 | 3 | 1 | 6 | 3 | 6 | 12 | 10 | 6 | 13 | 15 | 6 | 8 | 13 | 4 | 11 | 7 | 7 | 6 | 5 | 3 | 2 |
| MCQ | 8 | 7 | 7 | 11 | 9 | 4 | 8 | 23 | 37 | 42 | 11 | 18 | 10 | 18 | 25 | 31 | 15 | 6 | 32 | 34 | 7 | 11 | 11 | 12 |
| MEA | 9 | 9 | 3 | 9 | 18 | 9 | 15 | 26 | 45 | 28 | 13 | 10 | 5 | 9 | 7 | 18 | 15 | 19 | 28 | 18 | 8 | 12 | 8 | 12 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 2 | 3 | 2 | 1 | 0 | 2 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| NAQ | 45 | 45 | 48 | 55 | 49 | 12 | 16 | 18 | 29 | 31 | 19 | 19 | 13 | 20 | 11 | 10 | 14 | 11 | 22 | 30 | 31 | 57 | 40 | 109 |
| NCK | 2 | 3 | 5 | 9 | 9 | 8 | 7 | 4 | 10 | 15 | 10 | 8 | 5 | 6 | 6 | 8 | 6 | 4 | 10 | 13 | 6 | 6 | 7 | 13 |
| NEW | 6 | 7 | 3 | 10 | 12 | 5 | 8 | 11 | 26 | 21 | 10 | 6 | 8 | 7 | 5 | 11 | 7 | 22 | 26 | 8 | 4 | 10 | 4 | 5 |
| NGK | 3 | 4 | 7 | 10 | 9 | 11 | 10 | 4 | 12 | 15 | 12 | 10 | 8 | 6 | 7 | 9 | 6 | 4 | 12 | 18 | 9 | 10 | 8 | 18 |
| NUR | 4 | 4 | 6 | 8 | 9 | 10 | 16 | 5 | 18 | 22 | 6 | 6 | 4 | 9 | 7 | 8 | 4 | 4 | 18 | 19 | 13 | 20 | 23 | 26 |
| NVS | 10 | 5 | 5 | 6 | 20 | 14 | 18 | 10 | 5 | 10 | 9 | 10 | 6 | 5 | 5 | 3 | 4 | 11 | 24 | 19 | 9 | 9 | 16 | 18 |
| OTT | 6 | 6 | 20 | 13 | 16 | 4 | 11 | 19 | 27 | 25 | 7 | 10 | 12 | 18 | 19 | 19 | 8 | 13 | 11 | 9 | 8 | 6 | 12 | 11 |
| PAF | 5 | 2 | 5 | 9 | 18 | 5 | 14 | 12 | 19 | 14 | 11 | 12 | 9 | 6 | 5 | 3 | 3 | 2 | 17 | 16 | 30 | 30 | 20 | 19 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 6 | 4 | 12 | 16 | 10 | 14 | 4 | 7 | 8 | 10 | 3 | 4 | 2 | 2 | 4 | 4 | 1 | 6 | 6 | 5 | 2 | 6 | 18 | 10 |
| PPT | 9 | 1 | 4 | 8 | 3 | 2 | 2 | 2 | 5 | 3 | 5 | 3 | 2 | 3 | 3 | 2 | 4 | 7 | 12 | 5 | 6 | 5 | 5 | 4 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 2 | 6 | 13 | 3 | 4 | 7 | 12 | 17 | 15 | 8 | 6 | 10 | 8 | 2 | 3 | 4 | 3 | 11 | 10 | 3 | 5 | 10 | 9 |
| RES | 14 | 18 | 21 | 53 | 63 | 23 | 41 | 21 | 30 | 32 | 35 | 19 | 36 | 40 | 51 | 28 | 173 | 87 | 83 | 131 | 51 | 70 | 47 | 46 |
| SBA | 29 | 37 | 27 | 18 | 30 | 30 | 27 | 40 | 38 | 109 | 31 | 39 | 22 | 33 | 21 | 21 | 32 | 26 | 46 | 72 | 48 | 27 | 41 | 52 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 6 | 5 | 5 | 9 | 7 | 6 | 7 | 39 | 45 | 37 | 16 | 8 | 12 | 7 | 10 | 9 | 15 | 11 | 32 | 13 | 11 | 24 | 9 | 7 |
| SJG | 1 | 2 | 4 | 2 | 2 | 3 | 4 | 3 | 6 | 4 | 9 | 7 | 5 | 14 | 16 | 10 | 12 | 9 | 3 | 10 | 6 | 5 | 5 | 5 |
| SOD | 12 | 7 | 7 | 9 | 9 | 12 | 27 | 9 | 17 | 29 | 7 | 9 | 6 | 15 | 11 | 9 | 6 | 8 | 20 | 28 | 35 | 83 | 128 | 72 |
| SPT | 1 | 1 | 4 | 5 | 5 | 8 | 5 | 5 | 5 | 13 | 15 | 14 | 8 | 6 | 7 | 14 | 5 | 3 | 6 | 9 | 5 | 12 | 3 | 6 |
| STJ | 11 | 16 | 7 | 5 | 14 | 10 | 15 | 7 | 13 | |||||||||||||||
| SUA | 2 | 3 | 3 | 12 | 5 | 9 | 3 | 7 | 18 | 16 | 11 | 5 | 3 | 7 | 5 | 6 | 5 | 3 | 14 | 13 | 5 | 5 | 12 | 10 |
| TAM | 2 | 1 | 2 | 4 | 4 | 13 | 4 | 2 | 3 | 15 | 13 | 10 | 4 | 7 | 6 | 9 | 3 | 10 | 5 | 9 | 4 | 6 | 4 | 5 |
| TAN | 1 | 1 | 4 | 3 | 15 | 14 | 5 | 8 | 17 | 7 | 5 | 2 | 3 | 3 | 5 | 2 | 2 | 2 | 3 | 2 | 4 | 3 | 3 | 6 |
| TDC | ||||||||||||||||||||||||
| THL | 12 | 23 | 20 | 16 | 45 | 31 | 37 | 10 | 40 | 28 | 18 | 47 | 34 | 72 | 46 | 124 | 115 | 58 | 56 | 42 | 82 | 37 | 52 | 47 |
| THY | 2 | 3 | 4 | 11 | 9 | 8 | 6 | 5 | 11 | 17 | 12 | 9 | 4 | 7 | 6 | 8 | 6 | 4 | 11 | 14 | 6 | 6 | 8 | 14 |
| TRW | 1 | 2 | 5 | 3 | 4 | 5 | 5 | 6 | 4 | 13 | 2 | 9 | 11 | 6 | 9 | 16 | 17 | 6 | 5 | 9 | 7 | 6 | 7 | 7 |
| TSU | 1 | 1 | 3 | 3 | 4 | 6 | 16 | 11 | 9 | 12 | 5 | 8 | 10 | 3 | 3 | 6 | 9 | 3 | 3 | 6 | 3 | 8 | 8 | 5 |
| TUC | 4 | 1 | 2 | 6 | 8 | 5 | 3 | 4 | 9 | 6 | 2 | 4 | 8 | 8 | 9 | 6 | 4 | 26 | 19 | 2 | 6 | 3 | 6 | 5 |
| UPS | 4 | 4 | 6 | 9 | 8 | 11 | 13 | 4 | 16 | 17 | 12 | 9 | 4 | 7 | 6 | 6 | 4 | 4 | 14 | 13 | 13 | 12 | 16 | 26 |
| VAL | 2 | 3 | 8 | 9 | 9 | 10 | 6 | 9 | 9 | 16 | 10 | 12 | 9 | 11 | 6 | 7 | 2 | 2 | 9 | 4 | 8 | 28 | 10 | 7 |
| VIC | 6 | 5 | 4 | 9 | 11 | 4 | 7 | 15 | 29 | 20 | 12 | 4 | 7 | 7 | 5 | 9 | 10 | 19 | 27 | 9 | 6 | 14 | 4 | 6 |
| VSS | 2 | 1 | 1 | 3 | 2 | 5 | 3 | 4 | 4 | 7 | 16 | 5 | 3 | 5 | 8 | 7 | 4 | 6 | 5 | 4 | 5 | 4 | 3 | 2 |
| WNG | 3 | 5 | 8 | 10 | 10 | 12 | 12 | 6 | 11 | 19 | 9 | 12 | 9 | 6 | 7 | 9 | 5 | 4 | 12 | 16 | 11 | 14 | 9 | 20 |
| YKC | 10 | 16 | 12 | 16 | 27 | 46 | 31 | 236 | 206 | 124 | 89 | 35 | 23 | 26 | 27 | 36 | 28 | 20 | 35 | 42 | 41 | 28 | 39 | 60 |
- Date modified: