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 | 5 | 4 | 5 | 4 | 7 | 7 | 5 | 5 | 1 | 7 | 4 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 |
| ABG | 10 | 6 | 8 | 15 | 15 | 6 | 3 | 7 | 11 | 16 | 8 | 4 | 7 | 3 | 5 | 6 | 4 | 3 | 3 | 5 | 5 | 4 | 3 | 6 |
| ABK | 20 | 8 | 6 | 13 | 21 | 10 | 5 | 6 | 6 | 6 | 6 | 5 | 12 | 11 | 11 | 4 | 7 | 18 | 15 | 48 | 53 | 26 | 22 | 97 |
| AIA | 2 | 1 | 4 | 5 | 3 | 2 | 2 | 1 | 2 | 1 | 2 | 1 | 2 | 1 | 3 | 3 | 2 | 3 | 4 | 3 | 1 | 2 | 3 | 5 |
| AMS | 2 | 1 | 2 | 2 | 1 | 1 | 3 | 2 | 1 | 3 | 3 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 5 | 3 | 3 | 4 | 4 |
| API | 4 | 2 | 3 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 3 | 2 | 2 | 6 |
| AQU | 0 | 0 | 1 | 1 | 1 | 2 | 3 | 3 | 5 | 5 | 5 | 4 | 2 | 5 | 7 | 8 | 3 | 2 | 1 | 1 | 3 | 1 | 1 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 4 | 7 | 8 | 7 | 3 | 4 | 4 | 4 | 3 | 2 | 2 | 0 | 0 |
| ASP | 5 | 9 | 4 | 4 | 4 | 2 | 7 | 3 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 3 | 2 |
| BDV | 0 | 1 | 2 | 3 | 1 | 2 | 1 | 2 | 6 | 4 | 7 | 4 | 7 | 8 | 5 | 4 | 2 | 1 | 1 | 2 | 2 | 1 | 1 | 3 |
| BEL | 2 | 2 | 3 | 2 | 2 | 4 | 4 | 5 | 4 | 7 | 7 | 6 | 4 | 10 | 7 | 4 | 4 | 3 | 2 | 2 | 3 | 2 | 2 | 2 |
| BFE | 2 | 3 | 5 | 3 | 3 | 3 | 2 | 3 | 7 | 4 | 5 | 3 | 9 | 9 | 6 | 9 | 4 | 4 | 5 | 6 | 7 | 7 | 4 | 6 |
| BFO | ||||||||||||||||||||||||
| BLC | 34 | 28 | 238 | 328 | 38 | 20 | 132 | 62 | 81 | 30 | 25 | 23 | 43 | 66 | 72 | 45 | 54 | 14 | 25 | 28 | 85 | 75 | 106 | 112 |
| BMT | 9 | 4 | 7 | 2 | 5 | 5 | 3 | 2 | 2 | 3 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 2 | 2 | 2 |
| BNG | 1 | 1 | 1 | 1 | 3 | 1 | 4 | 13 | 8 | 11 | 4 | 6 | 5 | 12 | 2 | 3 | 5 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| BOU | 1 | 3 | 2 | 3 | 1 | 1 | 2 | 1 | 1 | 1 | 0 | 1 | 1 | 2 | 1 | 6 | 15 | 2 | 13 | 5 | 1 | 3 | 4 | 6 |
| BOX | 2 | 1 | 2 | 2 | 4 | 1 | 10 | 3 | 2 | 5 | 2 | 6 | 5 | 5 | 4 | 1 | 5 | 1 | 1 | 2 | 5 | 4 | 2 | 5 |
| BRW | 8 | 5 | 34 | 21 | 9 | 9 | 45 | 23 | 30 | 24 | 53 | 28 | 68 | 63 | 56 | 33 | 42 | 83 | 49 | 34 | 32 | 19 | 17 | 14 |
| BSL | 2 | 1 | 5 | 6 | 1 | 3 | 2 | 2 | 1 | 1 | 3 | 3 | 3 | 11 | 14 | 1 | 5 | 6 | 2 | 4 | 2 | 6 | 5 | 5 |
| CBB | 39 | 50 | 46 | 51 | 11 | 14 | 38 | 40 | 34 | 6 | 13 | 33 | 20 | 80 | 43 | 72 | 243 | 83 | 86 | 78 | 73 | 39 | 143 | 113 |
| CLF | 1 | 1 | 1 | 2 | 3 | 2 | 1 | 4 | 6 | 3 | 5 | 7 | 2 | 6 | 10 | 8 | 2 | 4 | 1 | 2 | 3 | 2 | 2 | 2 |
| CMO | 13 | 11 | 24 | 17 | 13 | 6 | 35 | 38 | 7 | 14 | 28 | 12 | 37 | 22 | 6 | 7 | 12 | 6 | 13 | 11 | 17 | 23 | 11 | 11 |
| CNB | 2 | 2 | 4 | 5 | 2 | 3 | 3 | 3 | 1 | 2 | 2 | 1 | 2 | 1 | 3 | 2 | 2 | 2 | 1 | 3 | 2 | 2 | 3 | 7 |
| CSY | ||||||||||||||||||||||||
| CTA | 7 | 3 | 2 | 1 | 1 | 9 | 11 | 2 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 2 | 2 | 6 |
| CZT | 2 | 1 | 6 | 4 | 2 | 2 | 3 | 2 | 3 | 4 | 4 | 2 | 2 | 1 | 2 | 3 | 1 | 2 | 2 | 10 | 7 | 4 | 2 | 4 |
| DLR | 1 | 2 | 5 | 4 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 3 | 2 | 11 | 8 | 1 | 2 | 2 | 3 | 2 | 8 | 10 | 5 |
| DOU | 2 | 1 | 3 | 4 | 2 | 3 | 2 | 6 | 6 | 3 | 7 | 6 | 3 | 8 | 8 | 5 | 2 | 4 | 1 | 3 | 4 | 3 | 3 | 5 |
| DRV | 28 | 39 | 51 | 61 | 73 | 21 | 34 | 11 | 21 | 12 | 22 | 24 | 25 | 23 | 31 | 38 | 28 | 16 | 28 | 39 | 52 | 29 | 32 | 55 |
| EBR | 2 | 2 | 2 | 2 | 3 | 5 | 3 | 2 | 6 | 6 | 5 | 8 | 5 | 4 | 6 | 14 | 6 | 8 | 3 | 6 | 7 | 7 | 7 | 7 |
| ESK | 1 | 1 | 2 | 4 | 3 | 2 | 1 | 0 | 2 | 5 | 8 | 5 | 4 | 8 | 4 | 4 | 5 | 4 | 2 | 2 | 3 | 4 | 4 | 5 |
| EUA | ||||||||||||||||||||||||
| EYR | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 2 | 3 | 1 | 3 | 2 | 2 | 3 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 1 |
| FCC | 8 | 7 | 181 | 105 | 65 | 66 | 257 | 190 | 47 | 21 | 14 | 7 | 20 | 8 | 9 | 7 | 7 | 16 | 17 | 17 | 32 | 50 | 37 | 40 |
| FRD | 1 | 1 | 4 | 1 | 1 | 1 | 2 | 1 | 1 | 3 | 1 | 1 | 3 | 2 | 4 | 7 | 2 | 5 | 7 | 7 | 2 | 3 | 2 | 3 |
| FRN | 1 | 3 | 1 | 3 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 2 | 4 | 2 | 16 | 14 | 6 | 9 | 9 | 4 | 5 | 5 |
| FUR | 0 | 0 | 1 | 2 | 1 | 1 | 1 | 3 | 8 | 4 | 5 | 5 | 5 | 9 | 7 | 6 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 88 | 42 | 113 | 107 | 88 | 19 | 38 | 38 | 70 | 64 | 46 | 39 | 44 | 43 | 38 | 118 | 84 | 56 | 78 | 43 | 127 | 46 | 31 | 60 |
| GNA | 10 | 6 | 10 | 17 | 2 | 7 | 6 | 2 | 6 | 4 | 3 | 3 | 2 | 3 | 3 | 3 | 5 | 5 | 3 | 12 | 5 | 7 | 3 | 7 |
| GUA | 3 | 2 | 3 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 2 | 2 | 3 | 3 |
| GUI | 1 | 1 | 3 | 4 | 1 | 1 | 2 | 1 | 1 | 2 | 4 | 5 | 5 | 5 | 2 | 3 | 2 | 4 | 4 | 4 | 2 | 2 | 2 | 3 |
| GZH | 7 | 11 | 11 | 1 | 4 | 5 | 9 | 8 | 3 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 2 | 3 | 6 |
| HAD | 2 | 2 | 3 | 2 | 3 | 2 | 2 | 2 | 4 | 8 | 6 | 9 | 3 | 10 | 9 | 8 | 2 | 8 | 3 | 4 | 4 | 3 | 3 | 5 |
| HBK | 3 | 2 | 3 | 5 | 4 | 4 | 6 | 5 | 3 | 4 | 3 | 3 | 7 | 7 | 5 | 4 | 4 | 3 | 4 | 3 | 3 | 3 | 2 | 3 |
| HER | 2 | 2 | 7 | 6 | 4 | 4 | 3 | 6 | 2 | 4 | 7 | 3 | 4 | 4 | 7 | 5 | 3 | 2 | 2 | 6 | 6 | 7 | 6 | 7 |
| HLP | 1 | 1 | 2 | 3 | 2 | 3 | 2 | 4 | 5 | 6 | 6 | 5 | 7 | 8 | 7 | 6 | 4 | 3 | 3 | 4 | 6 | 4 | 4 | 4 |
| HON | 8 | 4 | 2 | 3 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 5 | 2 | 5 | 10 | 4 | 5 | 4 | 3 |
| HRB | 1 | 1 | 2 | 2 | 1 | 3 | 3 | 3 | 4 | 4 | 9 | 4 | 6 | 8 | 5 | 4 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 |
| HRN | 53 | 60 | 18 | 45 | 112 | 26 | 17 | 21 | 21 | 23 | 48 | 35 | 46 | 49 | 85 | 14 | 33 | 18 | 38 | 56 | 88 | 81 | 71 | 37 |
| HUA | 1 | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 2 | 5 | 6 | 2 | 2 | 6 | 3 | 3 | 5 | 2 | 3 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 30 | 34 | 335 | 159 | 108 | 44 | 33 | 45 | 32 | 36 | 19 | 20 | 16 | 18 | 16 | 28 | 34 | 54 | 56 | 89 | 52 | 99 | 63 | 58 |
| IRT | 4 | 2 | 12 | 3 | 3 | 2 | 2 | 6 | 5 | 6 | 4 | 6 | 5 | 3 | 2 | 2 | 2 | 3 | 3 | 1 | 4 | 2 | 2 | 3 |
| IZN | ||||||||||||||||||||||||
| KAK | 3 | 4 | 4 | 6 | 4 | 4 | 1 | 4 | 3 | 2 | 4 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 4 | 3 | 4 | 4 | 10 |
| KDU | 7 | 5 | 4 | 1 | 1 | 2 | 3 | 6 | 2 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 4 | 8 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 6 | 2 | 8 | 5 | 5 | 4 | 3 | 3 | 2 | 5 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 4 | 16 |
| KOU | 1 | 2 | 5 | 3 | 2 | 2 | 3 | 1 | 1 | 1 | 5 | 6 | 10 | 6 | 7 | 4 | 6 | 8 | 5 | 8 | 6 | 8 | 4 | 8 |
| LER | 2 | 1 | 3 | 12 | 7 | 4 | 3 | 3 | 2 | 1 | 7 | 4 | 3 | 4 | 4 | 5 | 10 | 2 | 3 | 5 | 6 | 5 | 7 | 19 |
| LRM | 10 | 5 | 23 | 9 | 5 | 5 | 3 | 13 | 15 | 10 | 5 | 4 | 2 | 2 | 3 | 4 | 2 | 2 | 2 | 4 | 2 | 3 | 3 | 4 |
| LVV | 4 | 5 | 6 | 9 | 5 | 6 | 6 | 9 | 5 | 7 | 10 | 5 | 5 | 10 | 8 | 7 | 5 | 7 | 5 | 7 | 6 | 8 | 5 | 4 |
| LYC | ||||||||||||||||||||||||
| LZH | 5 | 9 | 10 | 6 | 5 | 8 | 7 | 2 | 3 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 2 | 2 | 6 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 1 | 1 | 2 | 1 | 1 | 5 | 6 | 7 | 17 | 14 | 22 | 5 | 2 | 4 | 19 | 26 | 6 | 7 | 4 | 4 | 3 | 1 | 1 |
| MCQ | 7 | 11 | 7 | 14 | 11 | 7 | 8 | 11 | 5 | 9 | 10 | 6 | 24 | 7 | 8 | 15 | 16 | 6 | 5 | 5 | 6 | 9 | 10 | 6 |
| MEA | 5 | 6 | 15 | 12 | 4 | 5 | 36 | 25 | 3 | 6 | 6 | 4 | 7 | 5 | 3 | 5 | 3 | 1 | 3 | 5 | 9 | 6 | 13 | 17 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 4 | 1 | 2 | 2 | 2 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 2 | 3 | 6 | 2 |
| NAQ | 21 | 51 | 167 | 124 | 49 | 26 | 37 | 19 | 12 | 14 | 11 | 5 | 6 | 17 | 14 | 21 | 23 | 32 | 25 | 39 | 64 | 21 | 16 | 104 |
| NCK | 1 | 0 | 2 | 2 | 1 | 3 | 2 | 3 | 3 | 4 | 8 | 3 | 4 | 8 | 5 | 4 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 2 |
| NEW | 2 | 3 | 3 | 5 | 1 | 1 | 4 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 5 | 7 | 14 | 2 | 5 | 7 | 7 | 7 | 8 |
| NGK | 1 | 1 | 3 | 5 | 2 | 3 | 1 | 3 | 8 | 4 | 5 | 2 | 8 | 6 | 5 | 4 | 2 | 2 | 3 | 1 | 2 | 4 | 5 | 9 |
| NUR | 3 | 2 | 3 | 2 | 3 | 3 | 3 | 2 | 5 | 3 | 4 | 4 | 2 | 8 | 7 | 5 | 5 | 3 | 4 | 6 | 9 | 6 | 2 | 15 |
| NVS | 4 | 8 | 4 | 7 | 5 | 7 | 6 | 5 | 4 | 7 | 11 | 4 | 4 | 3 | 5 | 4 | 4 | 4 | 2 | 6 | 12 | 4 | 4 | 3 |
| OTT | 2 | 1 | 10 | 4 | 2 | 3 | 7 | 5 | 2 | 6 | 4 | 1 | 2 | 3 | 5 | 2 | 2 | 4 | 3 | 8 | 3 | 4 | 10 | 7 |
| PAF | 1 | 1 | 5 | 3 | 2 | 3 | 2 | 3 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 | 1 | 2 | 3 | 12 | 12 | 3 | 2 | 2 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 5 | 12 | 12 | 9 | 10 | 8 | 8 | 5 | 4 | 2 | 2 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 3 | 9 | 10 |
| PPT | 3 | 7 | 6 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 9 | 6 | 4 | 13 | 7 | 6 | 8 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 1 | 1 | 3 | 1 | 2 | 8 | 9 | 11 | 4 | 1 | 6 | 8 | 8 | 3 | 4 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | 2 |
| RES | 40 | 29 | 10 | 17 | 5 | 5 | 13 | 11 | 16 | 6 | 16 | 35 | 14 | 40 | 49 | 44 | 59 | 43 | 130 | 77 | 45 | 50 | 46 | 34 |
| SBA | 23 | 16 | 36 | 35 | 16 | 6 | 15 | 17 | 22 | 13 | 10 | 7 | 10 | 45 | 24 | 15 | 34 | 14 | 14 | 23 | 16 | 30 | 42 | 18 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 4 | 9 | 6 | 5 | 7 | 3 | 4 | 3 | 2 | 3 | 6 | 3 | 9 | 4 | 4 | 5 | 4 | 2 | 6 | 3 | 7 | 5 | 6 | 11 |
| SJG | 3 | 1 | 3 | 3 | 1 | 1 | 1 | 2 | 2 | 2 | 6 | 8 | 2 | 3 | 4 | 4 | 4 | 7 | 2 | 3 | 3 | 3 | 2 | 2 |
| SOD | 16 | 4 | 4 | 5 | 8 | 6 | 5 | 5 | 4 | 2 | 2 | 6 | 6 | 8 | 5 | 4 | 3 | 11 | 11 | 32 | 51 | 30 | 18 | 83 |
| SPT | 1 | 0 | 1 | 1 | 1 | 3 | 2 | 1 | 3 | 4 | 7 | 6 | 4 | 3 | 1 | 8 | 7 | 4 | 3 | 1 | 1 | 1 | 1 | 1 |
| STJ | 6 | 3 | 17 | 7 | 9 | 3 | 6 | 4 | 7 | 5 | 10 | 5 | 11 | 8 | 11 | 13 | 5 | 9 | 12 | 10 | 8 | 6 | 9 | 5 |
| SUA | 1 | 1 | 1 | 1 | 3 | 2 | 2 | 7 | 3 | 12 | 5 | 3 | 7 | 7 | 6 | 4 | 2 | 1 | 2 | 2 | 1 | 1 | 4 | 4 |
| TAM | 1 | 0 | 1 | 0 | 1 | 3 | 4 | 1 | 4 | 1 | 5 | 2 | 2 | 5 | 2 | 3 | 5 | 2 | 2 | 1 | 1 | 1 | 1 | 2 |
| TAN | 1 | 1 | 1 | 1 | 1 | 1 | 7 | 2 | 1 | 5 | 3 | 5 | 5 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 |
| TDC | ||||||||||||||||||||||||
| THL | 15 | 11 | 6 | 17 | 12 | 14 | 22 | 11 | 33 | 49 | 38 | 84 | 54 | 134 | 107 | 43 | 40 | 53 | 32 | 34 | 21 | 16 | 22 | 16 |
| THY | 1 | 1 | 2 | 2 | 1 | 3 | 2 | 4 | 4 | 4 | 10 | 3 | 5 | 8 | 5 | 5 | 2 | 1 | 1 | 0 | 1 | 1 | 2 | 2 |
| TRW | 0 | 1 | 3 | 2 | 1 | 1 | 3 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 8 | 6 | 3 | 7 | 6 | 6 | 1 | 2 | 2 | 3 |
| TSU | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 2 | 8 | 7 | 4 | 3 | 1 | 6 | 7 | 6 | 2 | 1 | 1 | 1 | 2 | 2 | 3 | 3 |
| TUC | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 2 | 5 | 2 | 18 | 10 | 5 | 8 | 6 | 3 | 6 | 6 | 2 |
| UPS | 2 | 1 | 2 | 5 | 3 | 2 | 1 | 1 | 1 | 5 | 3 | 2 | 4 | 6 | 5 | 5 | 2 | 3 | 3 | 5 | 10 | 5 | 3 | 12 |
| VAL | 5 | 3 | 9 | 7 | 5 | 2 | 2 | 2 | 6 | 9 | 9 | 9 | 4 | 6 | 12 | 8 | 6 | 10 | 6 | 6 | 6 | 6 | 5 | 14 |
| VIC | 2 | 4 | 4 | 4 | 4 | 1 | 3 | 2 | 1 | 2 | 1 | 1 | 2 | 2 | 3 | 4 | 2 | 15 | 6 | 5 | 6 | 9 | 7 | 7 |
| VSS | 2 | 2 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 5 | 3 | 8 | 15 | 7 | 6 | 7 | 7 | 6 | 4 | 2 | 2 | 4 | 3 | 3 |
| WNG | 1 | 1 | 3 | 1 | 3 | 2 | 1 | 3 | 7 | 4 | 5 | 2 | 8 | 8 | 6 | 4 | 2 | 4 | 4 | 4 | 6 | 4 | 2 | 3 |
| YKC | 10 | 13 | 72 | 52 | 34 | 103 | 224 | 185 | 41 | 68 | 28 | 14 | 40 | 37 | 18 | 11 | 21 | 15 | 8 | 9 | 25 | 17 | 21 | 25 |
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