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 | 4 | 4 | 6 | 3 | 2 | 2 | 1 | 1 | 3 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | ||||||
| ABG | 5 | 4 | 8 | 13 | 9 | 5 | 7 | 4 | 11 | 7 | 3 | 3 | 3 | 4 | 4 | 2 | 3 | 3 | 4 | 3 | 3 | 2 | 4 | 3 |
| ABK | 68 | 12 | 2 | 6 | 25 | 13 | 12 | 8 | 10 | 12 | 13 | 7 | 16 | 8 | 11 | 18 | 18 | 13 | 99 | 50 | 6 | 4 | 12 | 13 |
| AIA | 3 | 1 | 1 | 2 | 14 | 8 | 3 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 6 | 2 | 6 | 6 | 7 | 8 | 4 | 2 | 3 | 3 |
| AMS | 3 | 3 | 2 | 3 | 3 | 3 | 4 | 2 | 6 | 4 | 4 | 2 | 2 | 2 | 2 | 2 | 3 | 1 | 7 | 7 | 2 | 1 | 3 | 2 |
| API | 2 | 2 | 3 | 3 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 3 | 2 | 3 | 1 | 2 |
| AQU | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 4 | 7 | 8 | 10 | 3 | 2 | 4 | 7 | 7 | 4 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 6 | 5 | 4 | 4 | 1 | 1 | 2 | 1 | 3 | 2 | 1 | 1 | 0 | 1 |
| ASP | 8 | 9 | 15 | 5 | 8 | 5 | 6 | 6 | 4 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 5 |
| BDV | 1 | 1 | 0 | 1 | 2 | 2 | 1 | 3 | 5 | 7 | 8 | 1 | 5 | 7 | 5 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| BEL | 3 | 3 | 2 | 4 | 5 | 2 | 3 | 7 | 9 | 12 | 4 | 7 | 7 | 7 | 6 | 5 | 3 | 3 | 5 | 3 | 2 | 2 | 2 | 1 |
| BFE | 8 | 4 | 2 | 2 | 7 | 3 | 4 | 6 | 6 | 9 | 6 | 2 | 5 | 15 | 9 | 8 | 2 | 6 | 9 | 9 | 2 | 3 | 3 | 3 |
| BFO | ||||||||||||||||||||||||
| BLC | 34 | 14 | 15 | 19 | 71 | 35 | 48 | 13 | 15 | 21 | 60 | 66 | 112 | 104 | 75 | 157 | 170 | 46 | 58 | 40 | 64 | 18 | 49 | 22 |
| BMT | 2 | 5 | 8 | 8 | 2 | 5 | 6 | 4 | 3 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 2 | 1 | 2 |
| BNG | 1 | 1 | 1 | 1 | 4 | 4 | 4 | 12 | 11 | 6 | 4 | 4 | 8 | 7 | 2 | 1 | 3 | 2 | 1 | 1 | 1 | 0 | 1 | 1 |
| BOU | 3 | 1 | 0 | 1 | 4 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 6 | 4 | 5 | 2 | 3 | 4 | 4 | 7 | 4 |
| BOX | 8 | 3 | 1 | 1 | 1 | 1 | 3 | 6 | 6 | 5 | 4 | 10 | 8 | 4 | 3 | 1 | 3 | 1 | 9 | 5 | 1 | 1 | 1 | 1 |
| BRW | 8 | 7 | 5 | 23 | 29 | 5 | 11 | 40 | 18 | 31 | 40 | 52 | 12 | 26 | 30 | 106 | 71 | 46 | 18 | 17 | 26 | 12 | 25 | 17 |
| BSL | 4 | 2 | 2 | 1 | 8 | 4 | 4 | 1 | 2 | 1 | 4 | 2 | 3 | 5 | 7 | 8 | 2 | 4 | 4 | 11 | 6 | 5 | 2 | 2 |
| CBB | 32 | 32 | 11 | 22 | 16 | 17 | 19 | 10 | 13 | 9 | 28 | 33 | 50 | 31 | 60 | 38 | 64 | 160 | 164 | 42 | 149 | 56 | 96 | 39 |
| CLF | 1 | 1 | 1 | 1 | 3 | 3 | 2 | 2 | 4 | 6 | 9 | 7 | 2 | 8 | 7 | 7 | 3 | 5 | 3 | 2 | 1 | 1 | 1 | 1 |
| CMO | 7 | 6 | 6 | 7 | 50 | 40 | 12 | 17 | 16 | 12 | 32 | 12 | 7 | 12 | 18 | 40 | 35 | 19 | 32 | 11 | 18 | 13 | 15 | 5 |
| CNB | 3 | 3 | 2 | 5 | 5 | 4 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 3 | 2 | 2 | 5 | 6 | 1 | 2 | 3 | 1 |
| CSY | ||||||||||||||||||||||||
| CTA | 13 | 9 | 4 | 6 | 2 | 6 | 6 | 3 | 1 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 0 | 2 | 1 | 1 | 2 | 6 | 7 |
| CZT | 7 | 1 | 1 | 4 | 5 | 7 | 4 | 2 | 6 | 3 | 6 | 2 | 3 | 1 | 2 | 2 | 2 | 1 | 14 | 9 | 2 | 1 | 2 | 2 |
| DLR | 3 | 2 | 1 | 1 | 4 | 3 | 3 | 2 | 3 | 1 | 3 | 1 | 3 | 2 | 9 | 8 | 5 | 1 | 3 | 7 | 2 | 6 | 4 | 3 |
| DOU | 2 | 2 | 1 | 1 | 6 | 4 | 2 | 3 | 3 | 5 | 7 | 6 | 2 | 7 | 8 | 2 | 5 | 4 | 4 | 2 | 3 | 2 | 1 | 2 |
| DRV | 52 | 43 | 45 | 135 | 91 | 65 | 45 | 40 | 23 | 19 | 32 | 13 | 19 | 12 | 17 | 51 | 20 | 29 | 55 | 46 | 55 | 24 | 73 | 48 |
| EBR | 6 | 4 | 1 | 2 | 8 | 8 | 7 | 5 | 5 | 9 | 8 | 5 | 4 | 5 | 5 | 7 | 8 | 5 | 5 | 4 | 5 | 5 | 4 | 5 |
| ESK | 1 | 1 | 1 | 1 | 8 | 4 | 1 | 2 | 5 | 5 | 4 | 5 | 1 | 5 | 7 | 5 | 3 | 4 | 8 | 6 | 3 | 1 | 2 | 2 |
| EUA | ||||||||||||||||||||||||
| EYR | 3 | 2 | 3 | 5 | 5 | 2 | 2 | 3 | 2 | 2 | 2 | 3 | 3 | 3 | 3 | 4 | 3 | 2 | 6 | 3 | 5 | 2 | 3 | 6 |
| FCC | 20 | 6 | 3 | 20 | 189 | 94 | 48 | 31 | 28 | 30 | 48 | 19 | 26 | 18 | 15 | 12 | 24 | 15 | 21 | 24 | 11 | 12 | 27 | 12 |
| FRD | 1 | 1 | 1 | 1 | 4 | 2 | 1 | 1 | 1 | 1 | 3 | 1 | 1 | 2 | 4 | 5 | 3 | 7 | 7 | 1 | 3 | 2 | 4 | 3 |
| FRN | 8 | 3 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 6 | 8 | 11 | 5 | 3 | 2 | 4 | 8 |
| FUR | 1 | 0 | 0 | 1 | 2 | 2 | 1 | 3 | 5 | 5 | 9 | 4 | 5 | 8 | 6 | 3 | 1 | 1 | 2 | 1 | 1 | 0 | 1 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 25 | 16 | 5 | 13 | 146 | 115 | 56 | 51 | 86 | 98 | 184 | 43 | 70 | 72 | 50 | 48 | 59 | 71 | 125 | 45 | 43 | 35 | 24 | 40 |
| GNA | 8 | 8 | 15 | 24 | 11 | 5 | 12 | 11 | 8 | 6 | 4 | 2 | 4 | 3 | 3 | 11 | 5 | 2 | 15 | 10 | 3 | 3 | 8 | 7 |
| GUA | 11 | 3 | 2 | 3 | 6 | 3 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 3 | 4 | 6 |
| GUI | 3 | 2 | 2 | 1 | 4 | 2 | 2 | 1 | 1 | 7 | 5 | 8 | 5 | 4 | 4 | 3 | 2 | 4 | 5 | 5 | 1 | 1 | 1 | 1 |
| GZH | 6 | 7 | 10 | 9 | 1 | 5 | 8 | 4 | 5 | 4 | 1 | 1 | 1 | 2 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 2 | 2 | 2 |
| HAD | 2 | 2 | 1 | 1 | 6 | 2 | 3 | 3 | 5 | 4 | 8 | 10 | 2 | 6 | 8 | 6 | 6 | 6 | 8 | 7 | 3 | 1 | 1 | 2 |
| HBK | 3 | 2 | 4 | 4 | 4 | 3 | 6 | 18 | 4 | 6 | 6 | 7 | 6 | 8 | 9 | 3 | 3 | 3 | 3 | 4 | 3 | 3 | 3 | 2 |
| HER | 5 | 2 | 2 | 2 | 12 | 15 | 8 | 5 | 13 | 19 | 14 | 5 | 11 | 8 | 3 | 8 | 2 | 2 | 11 | 8 | 2 | 2 | 4 | 6 |
| HLP | 7 | 3 | 2 | 2 | 3 | 3 | 3 | 7 | 6 | 7 | 5 | 7 | 6 | 9 | 8 | 4 | 0 | 2 | 4 | 3 | 2 | 2 | 3 | 2 |
| HON | 10 | 9 | 4 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 2 | 1 | 1 | 0 | 2 | 1 | 6 | 6 | 4 | 9 | 17 | 12 | 2 | 5 |
| HRB | 2 | 1 | 1 | 2 | 2 | 2 | 2 | 4 | 6 | 12 | 8 | 4 | 4 | 8 | 5 | 5 | 2 | 1 | 2 | 2 | 1 | 1 | 1 | 1 |
| HRN | 53 | 34 | 27 | 74 | 64 | 111 | 34 | 40 | 62 | 33 | 51 | 12 | 64 | 57 | 79 | 51 | 20 | 20 | 236 | 239 | 48 | 18 | 26 | 38 |
| HUA | 1 | 1 | 1 | 2 | 2 | 3 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 4 | 2 | 2 | 2 | 8 | 5 | 3 | 4 | 7 | 4 | 1 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 44 | 24 | 26 | 12 | 223 | 167 | 52 | 41 | 44 | 62 | 152 | 47 | 21 | 15 | 46 | 33 | 45 | 32 | 100 | 33 | 41 | 21 | 24 | 28 |
| IRT | 2 | 4 | 1 | 12 | 4 | 4 | 6 | 8 | 5 | 1 | 4 | 3 | 3 | 3 | 2 | 2 | 3 | 3 | 4 | 3 | 1 | 2 | 2 | 4 |
| IZN | ||||||||||||||||||||||||
| KAK | 6 | 1 | 8 | 6 | 2 | 9 | 4 | 3 | 2 | 2 | 3 | 2 | 2 | 2 | 1 | 4 | 3 | 2 | 2 | 1 | 2 | 2 | 5 | 7 |
| KDU | 11 | 15 | 3 | 6 | 2 | 5 | 5 | 4 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 4 | 2 | 8 |
| KMH | ||||||||||||||||||||||||
| KNY | 10 | 4 | 1 | 2 | 2 | 10 | 6 | 2 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 3 | 2 | 1 | 3 | 2 | 1 | 2 | 3 | 5 |
| KOU | 3 | 1 | 1 | 1 | 7 | 3 | 3 | 2 | 1 | 4 | 10 | 6 | 4 | 5 | 2 | 7 | 10 | 5 | 10 | 1 | ||||
| LER | 5 | 3 | 2 | 2 | 18 | 8 | 2 | 4 | 4 | 2 | 5 | 4 | 2 | 2 | 9 | 8 | 6 | 3 | 13 | 10 | 8 | 4 | 3 | 6 |
| LRM | 7 | 6 | 22 | 30 | 17 | 13 | 5 | 10 | 14 | 10 | 4 | 3 | 2 | 2 | 2 | 6 | 8 | 2 | 6 | 2 | 2 | 4 | 3 | 15 |
| LVV | 6 | 7 | 5 | 6 | 7 | 5 | 5 | 7 | 8 | 14 | 5 | 7 | 11 | 8 | 7 | 7 | 4 | 4 | 9 | 5 | 6 | 4 | 5 | 6 |
| LYC | ||||||||||||||||||||||||
| LZH | 1 | 4 | 7 | 6 | 7 | 2 | 7 | 7 | 1 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | ||||||||
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 5 | 10 | 3 | 8 | 6 | 9 | 4 | 5 | 13 | 19 | 5 | 4 | 10 | 1 | 0 | 1 | 1 |
| MCQ | 9 | 6 | 3 | 19 | 21 | 19 | 9 | 6 | 6 | 9 | 5 | 6 | 9 | 4 | 11 | 48 | 28 | 9 | 8 | 6 | 7 | 10 | 17 | 3 |
| MEA | 4 | 4 | 3 | 6 | 29 | 20 | 8 | 6 | 6 | 11 | 11 | 5 | 4 | 5 | 4 | 8 | 12 | 7 | 7 | 6 | 4 | 11 | 11 | 6 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 8 | 2 | 1 | 5 | 5 | 3 | 3 | 2 | 2 | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 3 | 2 | 5 |
| NAQ | 37 | 17 | 20 | 16 | 211 | 72 | 18 | 10 | 16 | 13 | 29 | 7 | 10 | 12 | 26 | 22 | 18 | 31 | 50 | 63 | 16 | 7 | 17 | 34 |
| NCK | 1 | 1 | 0 | 2 | 2 | 2 | 1 | 4 | 5 | 11 | 5 | 1 | 4 | 8 | 6 | 4 | 2 | 1 | 2 | 1 | 1 | 0 | 1 | 1 |
| NEW | ||||||||||||||||||||||||
| NGK | 3 | 1 | 1 | 2 | 5 | 2 | 3 | 5 | 6 | 8 | 6 | 2 | 6 | 7 | 7 | 2 | 2 | 2 | 3 | 2 | 2 | 1 | 2 | 3 |
| NUR | 12 | 4 | 1 | 2 | 5 | 2 | 4 | 4 | 3 | 5 | 3 | 5 | 10 | 5 | 8 | 4 | 5 | 3 | 14 | 5 | 1 | 1 | 2 | 2 |
| NVS | 4 | 3 | 5 | 6 | 7 | 7 | 5 | 4 | 8 | 3 | 6 | 6 | 5 | 3 | 4 | 5 | 5 | 4 | 3 | 5 | 4 | 3 | 3 | 4 |
| OTT | 3 | 1 | 1 | 1 | 17 | 9 | 3 | 2 | 4 | 3 | 5 | 2 | 3 | 3 | 6 | 5 | 4 | 4 | 8 | 4 | 5 | 3 | 7 | 3 |
| PAF | 4 | 3 | 1 | 2 | 5 | 2 | 4 | 4 | 3 | 1 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 1 | 13 | 6 | 3 | 1 | 1 | 2 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 2 | 9 | 12 | 8 | 5 | 6 | 5 | 7 | 7 | 4 | 1 | 1 | 1 | 3 | 2 | 2 | 2 | 1 | 5 | 1 | ||||
| PPT | 3 | 3 | 4 | 6 | 2 | 5 | 3 | 1 | 1 | 1 | 2 | 1 | 2 | 0 | 1 | 1 | 4 | 8 | 4 | 2 | 8 | 9 | 12 | 4 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 1 | 1 | 2 | 1 | 3 | 10 | 13 | 7 | 2 | 6 | 3 | 5 | 6 | 7 | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 |
| RES | 65 | 17 | 8 | 24 | 22 | 13 | 17 | 8 | 12 | 9 | 13 | 15 | 39 | 34 | 60 | 72 | 85 | 45 | 111 | 85 | 32 | 19 | 50 | 71 |
| SBA | 44 | 34 | 33 | 31 | 17 | 14 | 13 | 14 | 9 | 8 | 9 | 9 | 15 | 19 | 22 | 17 | 26 | 22 | 31 | 12 | 46 | 12 | 53 | 38 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 6 | 4 | 2 | 7 | 6 | 7 | 5 | 3 | 3 | 4 | 6 | 4 | 3 | 3 | 5 | 8 | 7 | 3 | 11 | 6 | 3 | 2 | 9 | 3 |
| SJG | 2 | 1 | 0 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 5 | 3 | 3 | 7 | 1 | 1 | 2 | 5 | 8 | 3 | 1 | 1 | 2 |
| SOD | 49 | 7 | 1 | 3 | 12 | 4 | 6 | 4 | 4 | 6 | 6 | 4 | 14 | 5 | 10 | 9 | 14 | 7 | 74 | 47 | 5 | 4 | 8 | 5 |
| SPT | 1 | 1 | 0 | 0 | 2 | 1 | 1 | 1 | 1 | 8 | 9 | 2 | 1 | 3 | 3 | 2 | 2 | 6 | 4 | 1 | 1 | 1 | 1 | 1 |
| STJ | 5 | 3 | 2 | 3 | 44 | 25 | 8 | 6 | 12 | 7 | 24 | 8 | 9 | 7 | 6 | 7 | 11 | 16 | 24 | 5 | 10 | 3 | 6 | 7 |
| SUA | ||||||||||||||||||||||||
| TAM | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 5 | 12 | 3 | 3 | 7 | 8 | 5 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 17 | 26 | 25 | 27 | 46 | 18 | 9 | 11 | 30 | 15 | 15 | 28 | 34 | 76 | 106 | 86 | 74 | 55 | 56 | 48 | 22 | 15 | 13 | 26 |
| THY | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 3 | 6 | 11 | 5 | 2 | 5 | 7 | 6 | 5 | 1 | 1 | 1 | 1 | 0 | 1 | 1 | 1 |
| TRW | 1 | 1 | 0 | 1 | 3 | 2 | 2 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | ||||||||||
| TSU | 2 | 1 | 1 | 1 | 3 | 5 | 1 | 11 | 21 | 9 | 8 | 6 | 2 | 6 | 9 | 4 | 2 | 2 | 2 | 2 | 1 | 0 | 2 | 2 |
| TUC | 4 | 1 | 0 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 7 | 9 | 9 | 7 | 2 | 6 | 3 | 8 | 6 |
| UPS | 11 | 3 | 1 | 2 | 6 | 2 | 5 | 3 | 2 | 4 | 3 | 1 | 8 | 4 | 8 | 4 | 2 | 2 | 2 | 4 | 2 | 1 | 2 | 2 |
| VAL | 2 | 3 | 2 | 2 | 14 | 5 | 4 | 4 | 7 | 6 | 9 | 10 | 6 | 5 | 12 | 10 | 8 | 5 | 16 | 14 | 3 | 2 | 2 | 2 |
| VIC | 7 | 2 | 1 | 2 | 5 | 1 | 3 | 2 | 2 | 3 | 4 | 1 | 1 | 2 | 2 | 5 | 4 | 6 | 4 | 3 | 3 | 5 | 5 | 3 |
| VSS | 2 | 1 | 1 | 1 | 6 | 4 | 2 | 2 | 1 | 2 | 3 | 12 | 10 | 9 | 19 | 9 | 3 | 2 | 3 | 2 | 3 | 2 | 2 | 3 |
| WNG | 5 | 2 | 1 | 1 | 5 | 3 | 3 | 5 | 4 | 10 | 6 | 1 | 4 | 9 | 10 | 4 | 2 | 4 | 6 | 8 | 1 | 1 | 2 | 1 |
| YKC | 31 | 8 | 6 | 10 | 79 | 109 | 50 | 37 | 33 | 48 | 39 | 46 | 33 | 35 | 37 | 41 | 52 | 19 | 30 | 23 | 22 | 16 | 16 | 11 |
- Date modified: