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 | 0 | 2 | 5 | 2 | 2 | 3 | 3 | 5 | 6 | 2 | 4 | 7 | 2 | 4 | 5 | 1 | 1 | 1 | 1 | 1 | 3 | 1 | 2 |
| ABG | 6 | 6 | 15 | 15 | 9 | 5 | 14 | 15 | 11 | 4 | 3 | 4 | 6 | 2 | 2 | 5 | 3 | 4 | 3 | 3 | 5 | 5 | 3 | 6 |
| ABK | 109 | 42 | 15 | 45 | 20 | 36 | 8 | 29 | 9 | 8 | 8 | 13 | 22 | 18 | 20 | 22 | 11 | 29 | 60 | 14 | 99 | 141 | 34 | 98 |
| AIA | 4 | 3 | 4 | 5 | 10 | 5 | 12 | 11 | 3 | 4 | 2 | 2 | 3 | 4 | 1 | 2 | 1 | 3 | 3 | 1 | 6 | 9 | 5 | 2 |
| AMS | 3 | 3 | 3 | 4 | 7 | 7 | 9 | 6 | 5 | 6 | 7 | 3 | 2 | 5 | 2 | 1 | 2 | 2 | 6 | 3 | 7 | 10 | 4 | 4 |
| API | 5 | 2 | 4 | 1 | 2 | 1 | 2 | 2 | 2 | 2 | 3 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 5 | 4 | 4 | 2 |
| AQU | 1 | 1 | 1 | 2 | 2 | 3 | 3 | 3 | 5 | 4 | 3 | 1 | 2 | 5 | 4 | 4 | 3 | 2 | 2 | 2 | 2 | 3 | 1 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 0 | 2 | 7 | 4 | 1 | 2 | 1 | 2 | 2 | 3 | 3 | 1 | 0 | 1 | 0 | 1 |
| ASP | 5 | 8 | 3 | 4 | 1 | 5 | 6 | 3 | 1 | 1 | 1 | 0 | 1 | 2 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| BDV | 1 | 1 | 2 | 2 | 5 | 1 | 1 | 5 | 7 | 6 | 3 | 3 | 5 | 8 | 4 | 2 | 3 | 2 | 1 | 1 | 2 | 2 | 1 | 1 |
| BEL | 5 | 4 | 3 | 3 | 6 | 1 | 4 | 6 | 9 | 11 | 6 | 8 | 15 | 12 | 2 | 2 | 4 | 3 | 3 | 2 | 4 | 8 | 4 | 3 |
| BFE | 9 | 5 | 4 | 4 | 8 | 3 | 3 | 5 | 12 | 7 | 4 | 4 | 11 | 17 | 4 | 2 | 5 | 5 | 6 | 3 | 7 | 23 | 11 | 5 |
| BFO | ||||||||||||||||||||||||
| BLC | 72 | 32 | 31 | 27 | 44 | 26 | 26 | 131 | 85 | 33 | 62 | 60 | 52 | 109 | 96 | 53 | 26 | 35 | 38 | 67 | 140 | 193 | 115 | 51 |
| BMT | 4 | 7 | 5 | 1 | 5 | 5 | 4 | 2 | 3 | 1 | 1 | 1 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 | 2 | 2 |
| BNG | 2 | 1 | 1 | 2 | 4 | 10 | 5 | 11 | 10 | 4 | 11 | 4 | 5 | 1 | 2 | 4 | 4 | 1 | 1 | 2 | 1 | 2 | 2 | 1 |
| BOU | 1 | 1 | 5 | 5 | 3 | 2 | 4 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 6 | 3 | 3 | 3 | 4 | 2 | 4 | 2 | 5 |
| BOX | 8 | 4 | 2 | 2 | 2 | 2 | 3 | 4 | 4 | 6 | 7 | 5 | 6 | 7 | 5 | 2 | 1 | 2 | 4 | 1 | 12 | 9 | 8 | 2 |
| BRW | 15 | 10 | 26 | 122 | 63 | 23 | 51 | 117 | 46 | 66 | 48 | 54 | 17 | 133 | 80 | 32 | 20 | 12 | 28 | 16 | 11 | 51 | 32 | 17 |
| BSL | 1 | 4 | 4 | 3 | 6 | 6 | 3 | 4 | 3 | 3 | 3 | 1 | 5 | 6 | 2 | 2 | 3 | 1 | 4 | 4 | 3 | 6 | 4 | 1 |
| CBB | 29 | 37 | 42 | 45 | 13 | 11 | 45 | 128 | 85 | 35 | 37 | 35 | 34 | 127 | 168 | 59 | 47 | 195 | 96 | 194 | 59 | 108 | 144 | 63 |
| CLF | 1 | 2 | 2 | 1 | 3 | 3 | 3 | 3 | 7 | 4 | 7 | 6 | 2 | 12 | 7 | 3 | 5 | 3 | 2 | 1 | 2 | 3 | 1 | 1 |
| CMO | 22 | 7 | 36 | 32 | 30 | 16 | 159 | 195 | 33 | 34 | 16 | 32 | 23 | 102 | 96 | 36 | 8 | 14 | 7 | 10 | 17 | 31 | 30 | 21 |
| CNB | 1 | 5 | 5 | 7 | 2 | 3 | 7 | 7 | 3 | 2 | 2 | 2 | 1 | 8 | 3 | 1 | 1 | 1 | 5 | 2 | 4 | 5 | 5 | 4 |
| CSY | ||||||||||||||||||||||||
| CTA | 9 | 4 | 1 | 2 | 6 | 8 | 3 | 2 | 1 | 1 | 0 | 2 | 1 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 4 | 3 | 6 |
| CZT | 7 | 2 | 4 | 3 | 11 | 4 | 6 | 3 | 5 | 5 | 5 | 4 | 2 | 2 | 5 | 2 | 1 | 6 | 6 | 4 | 9 | 8 | 5 | 4 |
| DLR | 2 | 3 | 7 | 4 | 4 | 5 | 4 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 4 | 2 | 4 | 4 | 6 | 5 | 1 | 5 | 3 | 4 |
| DOU | 2 | 2 | 3 | 3 | 6 | 3 | 3 | 4 | 6 | 4 | 11 | 5 | 5 | 9 | 7 | 1 | 4 | 3 | 3 | 2 | 4 | 5 | 3 | 3 |
| DRV | 48 | 46 | 150 | 85 | 71 | 35 | 22 | 36 | 41 | 21 | 17 | 31 | 65 | 111 | 26 | 21 | 32 | 17 | 45 | 30 | 39 | 55 | 48 | 95 |
| EBR | 3 | 6 | 7 | 6 | 9 | 7 | 8 | 2 | 9 | 5 | 6 | 8 | 6 | 12 | 11 | 3 | 8 | 4 | 5 | 4 | 9 | 10 | 5 | 7 |
| ESK | 5 | 4 | 3 | 5 | 8 | 2 | 2 | 3 | 2 | 5 | 5 | 4 | 5 | 9 | 4 | 1 | 5 | 6 | 4 | 2 | 2 | 9 | 1 | 2 |
| EUA | ||||||||||||||||||||||||
| EYR | 4 | 2 | 5 | 7 | 4 | 2 | 7 | 8 | 3 | 4 | 4 | 3 | 3 | 10 | 3 | 1 | 3 | 2 | 2 | 2 | 2 | 3 | 4 | 6 |
| FCC | 15 | 30 | 25 | 68 | 218 | 101 | 156 | 81 | 43 | 79 | 34 | 26 | 27 | 31 | 41 | 19 | 12 | 19 | 16 | 22 | 28 | 46 | 52 | 44 |
| FRD | 2 | 2 | 4 | 4 | 4 | 1 | 2 | 3 | 1 | 2 | 2 | 1 | 1 | 3 | 10 | 2 | 2 | 5 | 6 | 3 | 1 | 2 | 4 | 2 |
| FRN | 3 | 4 | 3 | 2 | 2 | 2 | 2 | 1 | 1 | 2 | 0 | 1 | 0 | 1 | 2 | 9 | 13 | 5 | 8 | 7 | 2 | 6 | 8 | 4 |
| FUR | 1 | 1 | 2 | 2 | 4 | 2 | 1 | 4 | 8 | 6 | 2 | 1 | 4 | 8 | 4 | 2 | 3 | 2 | 1 | 1 | 1 | 2 | 1 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 27 | 25 | 27 | 60 | 137 | 63 | 50 | 56 | 156 | 177 | 115 | 62 | 88 | 56 | 34 | 55 | 43 | 94 | 59 | 71 | 92 | 178 | 61 | 36 |
| GNA | 4 | 13 | 9 | 9 | 8 | 4 | 26 | 9 | 12 | 5 | 2 | 3 | 6 | 12 | 8 | 5 | 2 | 8 | 10 | 5 | 9 | 10 | 8 | 7 |
| GUA | 4 | 5 | 5 | 3 | 1 | 3 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 2 |
| GUI | 1 | 3 | 3 | 2 | 1 | 2 | 1 | 2 | 6 | 5 | 2 | 4 | 5 | 2 | 4 | 4 | 5 | 5 | 5 | 3 | 2 | 3 | 3 | 2 |
| GZH | 7 | 9 | 9 | 3 | 7 | 7 | 5 | 7 | 2 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 1 | 2 | 2 | 6 |
| HAD | 2 | 3 | 4 | 4 | 5 | 2 | 8 | 3 | 6 | 4 | 11 | 5 | 5 | 13 | 8 | 6 | 5 | 2 | 3 | 2 | 7 | 13 | 3 | 4 |
| HBK | 4 | 2 | 4 | 3 | 5 | 9 | 4 | 6 | 4 | 3 | 6 | 4 | 5 | 6 | 3 | 4 | 3 | 3 | 3 | 3 | 3 | 5 | 3 | 2 |
| HER | 2 | 6 | 7 | 5 | 9 | 5 | 13 | 4 | 4 | 5 | 12 | 5 | 10 | 3 | 4 | 2 | 2 | 3 | 7 | 3 | 9 | 17 | 5 | 5 |
| HLP | 5 | 3 | 3 | 3 | 6 | 3 | 2 | 5 | 12 | 3 | 7 | 6 | 14 | 13 | 3 | 3 | 4 | 3 | 5 | 2 | 2 | 13 | 7 | 3 |
| HON | 9 | 2 | 3 | 2 | 1 | 2 | 4 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 1 | 1 | 6 | 4 | 2 | 7 | 11 | 3 | 6 | 4 |
| HRB | 1 | 1 | 2 | 2 | 5 | 2 | 1 | 6 | 6 | 6 | 5 | 3 | 7 | 7 | 4 | 3 | 2 | 2 | 2 | 1 | 2 | 3 | 2 | 1 |
| HRN | 32 | 79 | 79 | 68 | 119 | 150 | 149 | 31 | 41 | 30 | 52 | 85 | 193 | 65 | 58 | 37 | 38 | 50 | 141 | 124 | 45 | 186 | 76 | 39 |
| HUA | 2 | 2 | 2 | 2 | 2 | 3 | 2 | 2 | 1 | 1 | 2 | 4 | 4 | 6 | 3 | 5 | 5 | 3 | 5 | 3 | 3 | 2 | 2 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 37 | 59 | 35 | 56 | 118 | 72 | 53 | 36 | 61 | 101 | 57 | 50 | 34 | 33 | 35 | 37 | 25 | 54 | 32 | 161 | 130 | 179 | 41 | 53 |
| IRT | 4 | 5 | 5 | 4 | 4 | 2 | 2 | 5 | 2 | 1 | 4 | 4 | 3 | 3 | 1 | 1 | 2 | 3 | 2 | 3 | 2 | 2 | 2 | 0 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 3 | 4 | 4 | 6 | 6 | 6 | 7 | 5 | 4 | 3 | 2 | 4 | 6 | 4 | 1 | 1 | 4 | 1 | 2 | 1 | 5 | 9 | 6 |
| KDU | 10 | 9 | 4 | 1 | 6 | 8 | 5 | 5 | 2 | 2 | 2 | 1 | 1 | 3 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 4 | 7 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 3 | 8 | 3 | 10 | 8 | 2 | 8 | 3 | 2 | 4 | 3 | 3 | 4 | 2 | 1 | 1 | 3 | 1 | 2 | 3 | 4 | 6 | 11 |
| KOU | 4 | 4 | 4 | 5 | 2 | 3 | 2 | 3 | 4 | 4 | 7 | 7 | 5 | 2 | 7 | 8 | 4 | 2 | 5 | 4 | 3 | 6 | 3 | 3 |
| LER | 20 | 12 | 5 | 14 | 20 | 13 | 3 | 5 | 4 | 2 | 3 | 3 | 6 | 8 | 3 | 2 | 4 | 8 | 6 | 3 | 8 | 24 | 8 | 8 |
| LRM | 10 | 9 | 26 | 20 | 8 | 4 | 9 | 12 | 4 | 12 | 5 | 2 | 5 | 12 | 2 | 4 | 3 | 3 | 5 | 3 | 3 | 11 | 6 | 10 |
| LVV | 4 | 5 | 7 | 9 | 6 | 6 | 8 | 7 | 12 | 10 | 8 | 11 | 14 | 12 | 5 | 7 | 6 | 7 | 5 | 4 | 7 | 10 | 7 | 5 |
| LYC | ||||||||||||||||||||||||
| LZH | 2 | 6 | 9 | 4 | 4 | 3 | 6 | 6 | 3 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 2 | 1 | 1 | 1 | 2 | 3 | 3 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 1 | 1 | 3 | 3 | 2 | 2 | 2 | 8 | 11 | 8 | 6 | 7 | 5 | 5 | 14 | 10 | 1 | 1 | 6 | 10 | 2 | 3 | 3 | 2 |
| MCQ | 6 | 9 | 18 | 23 | 19 | 10 | 66 | 22 | 19 | 33 | 27 | 14 | 56 | 216 | 81 | 14 | 3 | 4 | 5 | 14 | 11 | 27 | 27 | 14 |
| MEA | 13 | 11 | 27 | 55 | 50 | 21 | 100 | 68 | 21 | 20 | 13 | 11 | 10 | 13 | 27 | 9 | 4 | 3 | 3 | 9 | 8 | 24 | 20 | 17 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 5 | 4 | 7 | 3 | 2 | 6 | 4 | 3 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 0 | 1 | 1 | 1 | 2 | 2 | 2 | 4 | 9 |
| NAQ | 96 | 50 | 39 | 127 | 159 | 36 | 54 | 44 | 54 | 36 | 22 | 11 | 15 | 31 | 15 | 21 | 27 | 43 | 18 | 29 | 95 | 171 | 35 | 97 |
| NCK | 1 | 1 | 2 | 2 | 4 | 2 | 1 | 6 | 5 | 6 | 2 | 3 | 3 | 6 | 4 | 2 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 |
| NEW | 1 | 1 | 8 | 7 | 6 | 1 | 13 | 3 | 1 | 2 | 3 | 2 | 1 | 7 | 4 | 1 | 6 | 4 | 1 | 5 | 3 | 6 | 2 | 8 |
| NGK | 3 | 3 | 5 | 3 | 6 | 2 | 3 | 6 | 6 | 11 | 6 | 4 | 13 | 9 | 2 | 2 | 3 | 5 | 2 | 1 | 7 | 4 | 2 | 4 |
| NUR | 15 | 7 | 4 | 5 | 7 | 4 | 3 | 2 | 7 | 2 | 2 | 7 | 9 | 10 | 7 | 5 | 2 | 6 | 10 | 3 | 25 | 21 | 11 | 5 |
| NVS | 5 | 4 | 4 | 6 | 4 | 8 | 5 | 8 | 5 | 5 | 3 | 3 | 6 | 4 | 6 | 3 | 3 | 6 | 6 | 5 | 6 | 5 | 9 | 4 |
| OTT | 3 | 4 | 5 | 23 | 22 | 3 | 5 | 7 | 3 | 7 | 2 | 3 | 4 | 1 | 6 | 6 | 11 | 4 | 12 | 10 | 6 | 9 | 6 | 5 |
| PAF | 4 | 7 | 7 | 4 | 5 | 5 | 4 | 4 | 5 | 2 | 2 | 2 | 2 | 2 | 2 | 1 | 2 | 6 | 10 | 3 | 13 | 20 | 4 | 5 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 8 | 5 | 12 | 9 | 3 | 9 | 8 | 12 | 4 | 1 | 4 | 2 | 3 | 2 | 2 | 2 | 2 | 3 | 2 | 3 | 2 | 3 | 6 | 4 |
| PPT | 1 | 4 | 4 | 2 | 4 | 4 | 4 | 2 | 1 | 1 | 1 | 2 | 1 | 3 | 2 | 2 | 4 | 7 | 4 | 7 | 11 | 3 | 3 | 3 |
| PST | ||||||||||||||||||||||||
| QSB | 2 | 1 | 6 | 4 | 6 | 6 | 8 | 5 | 2 | 3 | 6 | 7 | 6 | 2 | 3 | 1 | 2 | 2 | 2 | 1 | 2 | 2 | 2 | 2 |
| RES | 21 | 30 | 35 | 28 | 28 | 14 | 17 | 25 | 21 | 18 | 18 | 68 | 32 | 68 | 41 | 214 | 178 | 170 | 72 | 132 | 50 | 66 | 81 | 43 |
| SBA | 9 | 21 | 18 | 22 | 22 | 10 | 16 | 45 | 16 | 13 | 23 | 11 | 16 | 50 | 56 | 25 | 16 | 14 | 12 | 19 | 12 | 17 | 54 | 27 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 4 | 4 | 21 | 19 | 13 | 4 | 50 | 27 | 3 | 10 | 8 | 8 | 13 | 28 | 26 | 12 | 2 | 3 | 8 | 3 | 10 | 11 | 5 | 13 |
| SJG | 1 | 1 | 4 | 1 | 1 | 3 | 2 | 2 | 2 | 1 | 5 | 3 | 1 | 2 | 3 | 2 | 1 | 2 | 2 | 2 | 2 | 4 | 2 | 2 |
| SOD | 60 | 19 | 10 | 30 | 16 | 22 | 7 | 20 | 6 | 9 | 4 | 12 | 17 | 21 | 19 | 19 | 5 | 25 | 46 | 14 | 152 | 143 | 30 | 46 |
| SPT | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 4 | 7 | 7 | 9 | 5 | 3 | 7 | 6 | 8 | 8 | 4 | 1 | 1 | 2 | 2 | 2 | 2 |
| STJ | 11 | 6 | 11 | 10 | 18 | 15 | 12 | 6 | 11 | 8 | 12 | 13 | 14 | 13 | 6 | 4 | 4 | 12 | 9 | 8 | 11 | 23 | 8 | 11 |
| SUA | 1 | 2 | 4 | 3 | 4 | 3 | 4 | 6 | 5 | 6 | 2 | 3 | 8 | 8 | 5 | 2 | 2 | 3 | 1 | 2 | 3 | 2 | 2 | 2 |
| TAM | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 7 | 3 | 2 | 2 | 6 | 11 | 2 | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 1 | 1 | 1 |
| TAN | 1 | 1 | 1 | 1 | 1 | 2 | 4 | 5 | 5 | 5 | 4 | 3 | 3 | 2 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 2 |
| TDC | ||||||||||||||||||||||||
| THL | 24 | 23 | 30 | 28 | 36 | 8 | 21 | 21 | 17 | 22 | 45 | 189 | 79 | 30 | 70 | 43 | 106 | 122 | 27 | 24 | 15 | 26 | 28 | 29 |
| THY | 1 | 1 | 2 | 2 | 5 | 3 | 1 | 7 | 5 | 6 | 3 | 2 | 6 | 6 | 3 | 4 | 2 | 2 | 1 | 1 | 2 | 2 | 1 | 1 |
| TRW | 1 | 2 | 2 | 3 | 2 | 2 | 1 | 3 | 1 | 1 | 1 | 3 | 3 | 3 | 3 | 2 | 1 | 2 | 3 | 2 | 2 | 2 | 2 | 1 |
| TSU | 1 | 2 | 3 | 2 | 3 | 6 | 7 | 3 | 5 | 10 | 2 | 4 | 1 | 2 | 6 | 5 | 1 | 1 | 2 | 1 | 1 | 3 | 2 | 2 |
| TUC | 1 | 3 | 3 | 2 | 1 | 2 | 1 | 1 | 0 | 1 | 0 | 0 | 2 | 2 | 5 | 4 | 3 | 4 | 3 | 1 | 3 | 2 | 5 | 4 |
| UPS | 11 | 8 | 4 | 6 | 10 | 7 | 3 | 4 | 3 | 3 | 4 | 7 | 12 | 9 | 5 | 3 | 1 | 4 | 5 | 2 | 15 | 21 | 12 | 6 |
| VAL | 3 | 3 | 4 | 5 | 4 | 3 | 13 | 4 | 12 | 4 | 14 | 8 | 4 | 14 | 12 | 7 | 6 | 6 | 3 | 4 | 18 | 27 | 8 | 6 |
| VIC | 4 | 7 | 12 | 6 | 4 | 2 | 12 | 5 | 3 | 4 | 4 | 4 | 3 | 8 | 5 | 4 | 2 | 8 | 4 | 4 | 5 | 6 | 5 | 11 |
| VSS | 1 | 2 | 4 | 2 | 3 | 1 | 3 | 4 | 2 | 6 | 2 | 4 | 2 | 5 | 5 | 5 | 4 | 5 | 4 | 2 | 4 | 5 | 3 | 2 |
| WNG | 5 | 3 | 2 | 2 | 7 | 1 | 3 | 4 | 11 | 8 | 6 | 2 | 10 | 16 | 3 | 1 | 4 | 4 | 4 | 1 | 6 | 18 | 6 | 3 |
| YKC | 14 | 21 | 47 | 58 | 33 | 64 | 252 | 206 | 84 | 75 | 36 | 26 | 48 | 115 | 29 | 17 | 13 | 12 | 15 | 13 | 14 | 42 | 34 | 25 |
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