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 | 2 | 4 | 6 | 13 | 43 | 33 | 22 | 23 | 7 | 28 | 25 | 16 | 14 | 8 | 21 | 5 | 4 | 7 | 7 | 21 | 15 | 5 | 12 |
| ABG | 5 | 6 | 12 | 15 | 12 | 10 | 11 | 12 | 9 | 5 | 7 | 9 | 13 | 15 | 5 | 20 | 7 | 6 | 8 | 5 | 23 | 14 | 6 | 7 |
| ABK | 130 | 15 | 10 | 3 | 4 | 6 | 19 | 29 | 22 | 9 | 14 | 8 | 31 | 24 | 26 | 88 | 48 | 21 | 16 | 281 | 205 | 80 | 78 | 122 |
| AIA | 9 | 7 | 4 | 3 | 2 | 2 | 5 | 7 | 8 | 5 | 3 | 3 | 7 | 10 | 10 | 12 | 12 | 11 | 6 | 14 | 32 | 22 | 11 | 12 |
| AMS | 4 | 4 | 4 | 1 | 3 | 7 | 13 | 9 | 5 | 6 | 6 | 6 | 6 | 4 | 2 | 17 | 8 | 5 | 4 | 8 | 19 | 12 | 4 | 4 |
| API | 2 | 5 | 8 | 2 | 2 | 2 | 2 | 5 | 5 | 3 | 2 | 2 | 3 | 4 | 2 | 8 | 5 | 4 | 6 | 4 | 9 | 11 | 3 | 8 |
| AQU | 8 | 2 | 2 | 4 | 3 | 3 | 4 | 7 | 7 | 7 | 9 | 7 | 11 | 10 | 6 | 12 | 12 | 6 | 9 | 7 | 17 | 15 | 6 | 13 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 2 | 2 | 2 | 2 | 4 | 6 | 4 | 7 | 10 | 12 | 8 | 5 | 9 | 9 | 21 | 13 | 5 | 5 | 12 | 5 | 4 | 3 | 9 |
| ASP | 8 | 2 | 4 | 4 | 6 | 4 | 4 | 6 | 9 | 3 | 3 | 3 | 5 | 9 | 3 | 15 | 6 | 3 | 4 | 6 | 7 | 4 | 3 | 5 |
| BDV | 11 | 2 | 2 | 4 | 2 | 3 | 4 | 10 | 7 | 4 | 5 | 6 | 7 | 9 | 5 | 19 | 17 | 10 | 13 | 9 | 17 | 19 | 9 | 15 |
| BEL | 12 | 3 | 4 | 4 | 3 | 2 | 7 | 14 | 9 | 5 | 6 | 8 | 9 | 11 | 5 | 31 | 20 | 11 | 16 | 11 | 20 | 23 | 13 | 16 |
| BFE | 11 | 3 | 3 | 4 | 4 | 3 | 5 | 16 | 12 | 9 | 8 | 7 | 13 | 13 | 9 | 46 | 31 | 17 | 23 | 14 | 28 | 21 | 15 | 23 |
| BFO | ||||||||||||||||||||||||
| BLC | 42 | 36 | 40 | 17 | 43 | 23 | 29 | 34 | 49 | 23 | 43 | 53 | 68 | 88 | 81 | 120 | 73 | 49 | 106 | 146 | 357 | 103 | 76 | 79 |
| BMT | 10 | 7 | 2 | 12 | 13 | 10 | 7 | 10 | 9 | 2 | 5 | 4 | 7 | 11 | 5 | 19 | 10 | 4 | 6 | 5 | 15 | 8 | 4 | 7 |
| BNG | 4 | 3 | 2 | 3 | 7 | 12 | 17 | 17 | 17 | 8 | 4 | 8 | 15 | 21 | 16 | 23 | 5 | 4 | 7 | 11 | 15 | 9 | 4 | 12 |
| BOU | 7 | 2 | 5 | 3 | 2 | 4 | 8 | 11 | 10 | 3 | 5 | 4 | 7 | 11 | 10 | 31 | 17 | 5 | 11 | 21 | 33 | 27 | 9 | 13 |
| BOX | 3 | 6 | 4 | 2 | 5 | 5 | 9 | 15 | 16 | 7 | 12 | 10 | 21 | 19 | 9 | 47 | 25 | 12 | 12 | 14 | 38 | 23 | 13 | 17 |
| BRW | 38 | 38 | 44 | 35 | 15 | 14 | 57 | 28 | 38 | 20 | 37 | 38 | 56 | 99 | 56 | 166 | 237 | 69 | 119 | 103 | 183 | 138 | 90 | 87 |
| BSL | 9 | 4 | 5 | 3 | 2 | 4 | 8 | 11 | 10 | 4 | 5 | 4 | 6 | 19 | 7 | 14 | 18 | 8 | 8 | 14 | 29 | 23 | 5 | 9 |
| CBB | 37 | 29 | 48 | 20 | 32 | 37 | 38 | 20 | 21 | 23 | 25 | 35 | 63 | 125 | 45 | 321 | 352 | 158 | 165 | 569 | 310 | 147 | 76 | 100 |
| CLF | 13 | 2 | 2 | 3 | 2 | 2 | 6 | 7 | 7 | 4 | 7 | 5 | 8 | 9 | 6 | 16 | 18 | 11 | 14 | 12 | 15 | 13 | 7 | 17 |
| CMO | 14 | 18 | 19 | 18 | 10 | 10 | 38 | 29 | 28 | 14 | 18 | 15 | 41 | 59 | 25 | 97 | 99 | 27 | 50 | 60 | 95 | 101 | 52 | 76 |
| CNB | 3 | 5 | 3 | 4 | 3 | 6 | 8 | 7 | 8 | 3 | 3 | 3 | 5 | 7 | 3 | 9 | 6 | 4 | 8 | 8 | 5 | 4 | 10 | 8 |
| CSY | ||||||||||||||||||||||||
| CTA | 10 | 4 | 8 | 5 | 7 | 2 | 5 | 6 | 8 | 3 | 3 | 3 | 5 | 9 | 3 | 13 | 4 | 4 | 5 | 8 | 6 | 3 | 4 | 3 |
| CZT | 6 | 2 | 1 | 2 | 2 | 2 | 6 | 11 | 10 | 4 | 4 | 4 | 8 | 5 | 4 | 13 | 4 | 4 | 6 | 16 | 30 | 18 | 8 | 4 |
| DLR | 7 | 2 | 5 | 3 | 2 | 5 | 8 | 10 | 10 | 4 | 5 | 4 | 6 | 14 | 7 | 18 | 12 | 6 | 9 | 12 | 29 | 24 | 6 | 10 |
| DOU | 14 | 3 | 3 | 5 | 3 | 3 | 6 | 8 | 7 | 5 | 6 | 5 | 8 | 12 | 5 | 23 | 22 | 13 | 16 | 13 | 18 | 15 | 7 | 19 |
| DRV | 48 | 43 | 39 | 52 | 46 | 27 | 50 | 21 | 23 | 19 | 11 | 17 | 11 | 13 | 10 | 20 | 25 | 21 | 70 | 50 | 28 | 32 | 29 | 90 |
| EBR | 12 | 3 | 3 | 4 | 10 | 15 | 8 | 9 | 10 | 7 | 8 | 13 | 9 | 9 | 11 | 15 | 10 | 10 | 10 | 10 | 14 | 12 | 7 | 14 |
| ESK | 19 | 3 | 4 | 4 | 2 | 2 | 6 | 12 | 10 | 11 | 9 | 6 | 14 | 14 | 10 | 44 | 36 | 20 | 32 | 26 | 18 | 11 | 9 | 27 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 12 | 9 | 7 | 3 | 3 | 7 | 6 | 8 | 5 | 4 | 3 | 5 | 4 | 4 | 6 | 5 | 5 | 10 | 17 | 14 | 6 | 12 | 5 |
| FCC | 29 | 26 | 15 | 17 | 34 | 21 | 84 | 87 | 35 | 21 | 17 | 12 | 15 | 15 | 42 | 67 | 29 | 21 | 63 | 166 | 133 | 69 | 54 | 94 |
| FRD | 0 | 5 | 10 | |||||||||||||||||||||
| FRN | 5 | 2 | 4 | 3 | 2 | 5 | 7 | 9 | 10 | 4 | 5 | 4 | 9 | 8 | 4 | 24 | 11 | 6 | 8 | 12 | 25 | 29 | 8 | 12 |
| FUR | 11 | 2 | 2 | 4 | 3 | 3 | 4 | 9 | 7 | 4 | 7 | 7 | 7 | 10 | 6 | 17 | 16 | 10 | 12 | 10 | 17 | 17 | 9 | 15 |
| GCK | ||||||||||||||||||||||||
| GDH | 66 | 37 | 15 | 13 | 7 | 18 | 42 | 74 | 77 | 41 | 37 | 23 | 58 | 94 | 52 | 216 | 138 | 56 | 63 | 114 | 40 | 118 | 44 | 62 |
| GNA | 3 | 2 | 2 | 2 | 2 | 2 | 4 | 6 | 7 | 6 | 3 | 3 | 5 | 8 | 3 | 17 | 8 | 3 | 4 | 5 | 10 | 8 | 3 | 4 |
| GUA | 11 | 4 | 6 | 2 | 7 | 5 | 10 | 9 | 6 | 2 | 2 | 2 | 4 | 9 | 3 | 14 | 5 | 3 | 2 | 5 | 7 | 5 | 5 | 15 |
| GUI | 5 | 2 | 2 | 3 | 2 | 2 | 8 | 4 | 11 | 11 | 10 | 8 | 6 | 11 | 14 | 18 | 7 | 4 | 4 | 13 | 6 | 4 | 3 | 10 |
| GZH | 8 | 14 | 10 | 10 | 1 | 6 | 8 | 9 | 6 | 3 | 3 | 3 | 5 | 9 | 3 | 16 | 7 | 3 | 4 | 4 | 12 | 7 | 4 | 3 |
| HAD | 15 | 3 | 3 | 3 | 2 | 2 | 5 | 8 | 7 | 7 | 5 | 4 | 7 | 9 | 4 | 23 | 24 | 15 | 21 | 18 | 14 | 10 | 7 | 19 |
| HBK | 5 | 3 | 2 | 2 | 3 | 6 | 5 | 11 | 7 | 3 | 4 | 6 | 5 | 6 | 7 | 13 | 6 | 4 | 8 | 9 | 20 | 8 | 6 | 14 |
| HER | 5 | 2 | 2 | 1 | 2 | 5 | 6 | 9 | 8 | 6 | 3 | 5 | 5 | 4 | 7 | 8 | 5 | 5 | 7 | 8 | 17 | 7 | 5 | 13 |
| HLP | 10 | 3 | 3 | 4 | 2 | 3 | 9 | 14 | 12 | 8 | 8 | 9 | 13 | 15 | 16 | 38 | 23 | 11 | 17 | 15 | 20 | 21 | 11 | 20 |
| HON | 4 | 1 | 8 | 7 | 3 | 1 | 3 | 5 | 6 | 4 | 2 | 3 | 4 | 8 | 3 | 10 | 6 | 2 | 6 | 6 | 10 | 9 | 3 | 4 |
| HRB | 10 | 2 | 2 | 5 | 2 | 3 | 5 | 11 | 8 | 5 | 8 | 7 | 8 | 10 | 5 | 19 | 16 | 9 | 12 | 9 | 18 | 19 | 9 | 14 |
| HRN | 92 | 29 | 33 | 23 | 15 | 20 | 63 | 58 | 83 | 26 | 35 | 33 | 100 | 42 | 52 | 89 | 45 | 49 | 48 | 50 | 596 | 147 | 55 | 133 |
| HUA | 3 | 4 | 4 | 2 | 2 | 4 | 5 | 6 | 7 | 5 | 5 | 9 | 37 | 31 | 40 | 60 | 47 | 24 | 22 | 53 | 31 | 10 | 4 | 6 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 118 | 104 | 39 | 43 | 14 | 13 | 29 | 74 | 65 | 33 | 49 | 20 | 32 | 56 | 65 | 102 | 59 | 38 | 211 | 204 | 69 | 78 | 91 | 49 |
| IRT | 4 | 6 | 12 | 7 | 6 | 18 | 13 | 12 | 11 | 1 | 3 | 2 | 7 | 12 | 4 | 24 | 11 | 4 | 6 | 6 | 14 | 10 | 5 | 4 |
| IZN | ||||||||||||||||||||||||
| KAK | 2 | 5 | 9 | 9 | 3 | 6 | 4 | 6 | 5 | 3 | 2 | 3 | 5 | 10 | 4 | 13 | 4 | 3 | 3 | 6 | 9 | 7 | 6 | 5 |
| KDU | 8 | 9 | 6 | 8 | 9 | 2 | 4 | 6 | 8 | 3 | 2 | 2 | 4 | 9 | 3 | 16 | 6 | 3 | 3 | 5 | 7 | 3 | 2 | 3 |
| KMH | ||||||||||||||||||||||||
| KNY | 2 | 7 | 10 | 15 | 6 | 2 | 5 | 10 | 6 | 3 | 3 | 3 | 5 | 10 | 4 | 15 | 6 | 3 | 3 | 5 | 10 | 10 | 7 | 4 |
| KOU | 2 | 3 | 2 | 2 | 1 | 3 | 5 | 5 | 6 | 5 | 7 | 12 | 15 | 4 | 4 | 11 | 11 | 10 | 9 | 22 | 20 | 7 | 2 | 5 |
| LER | 14 | 3 | 3 | 4 | 2 | 1 | 6 | 13 | 12 | 12 | 9 | 5 | 10 | 13 | 12 | 53 | 42 | 22 | 32 | 24 | 38 | 12 | 11 | 27 |
| LRM | 4 | 3 | 6 | 2 | 3 | 3 | 3 | 7 | 8 | 4 | 3 | 3 | 6 | 11 | 3 | 20 | 9 | 3 | 5 | 5 | 14 | 9 | 3 | 8 |
| LVV | 10 | 4 | 4 | 4 | 5 | 5 | 7 | 12 | 7 | 5 | 8 | 9 | 7 | 11 | 5 | 25 | 16 | 11 | 10 | 11 | 19 | 22 | 8 | 15 |
| LYC | ||||||||||||||||||||||||
| LZH | 7 | 4 | 2 | 7 | 15 | 10 | 7 | 10 | 9 | 4 | 6 | 3 | 7 | 9 | 4 | 19 | 10 | 4 | 6 | 5 | 16 | 11 | 3 | 5 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 3 | 2 | 2 | 2 | 1 | 3 | 7 | 10 | 16 | 25 | 21 | 12 | 10 | 24 | 19 | 29 | 12 | 8 | 7 | 13 | 6 | 4 | 3 | 9 |
| MCQ | 11 | 8 | 13 | 11 | 7 | 7 | 22 | 15 | 12 | 4 | 7 | 5 | 5 | 4 | 7 | 31 | 22 | 11 | 17 | 24 | 66 | 49 | 19 | 27 |
| MEA | 11 | 9 | 10 | 6 | 3 | 6 | 9 | 19 | 16 | 6 | 8 | 9 | 12 | 13 | 15 | 45 | 32 | 13 | 19 | 62 | 73 | 58 | 29 | 31 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 4 | 5 | 6 | 12 | 5 | 4 | 4 | 7 | 7 | 4 | 4 | 3 | 7 | 13 | 4 | 16 | 7 | 3 | 4 | 9 | 15 | 6 | 11 | 11 |
| NAQ | 34 | 12 | 11 | 8 | 8 | 7 | 13 | 21 | 15 | 16 | 13 | 17 | 19 | 20 | 25 | 54 | 75 | 21 | 118 | 103 | 140 | 131 | 71 | 78 |
| NCK | 9 | 2 | 2 | 4 | 2 | 3 | 4 | 10 | 8 | 5 | 7 | 6 | 7 | 10 | 5 | 18 | 15 | 8 | 11 | 8 | 16 | 17 | 8 | 14 |
| NEW | 7 | 31 | 24 | 13 | 13 | 31 | 43 | 35 | 20 | 21 | ||||||||||||||
| NGK | 12 | 2 | 3 | 4 | 3 | 2 | 6 | 12 | 9 | 5 | 6 | 7 | 8 | 11 | 6 | 30 | 22 | 13 | 17 | 12 | 18 | 21 | 13 | 19 |
| NUR | 4 | 5 | 5 | 2 | 3 | 4 | 9 | 19 | 14 | 7 | 8 | 9 | 19 | 15 | 12 | 48 | 33 | 15 | 17 | 15 | 32 | 21 | 15 | 17 |
| NVS | 3 | 3 | 7 | 11 | 8 | 6 | 14 | 11 | 15 | 7 | 5 | 4 | 10 | 11 | 6 | 23 | 10 | 8 | 6 | 9 | 14 | 9 | 7 | 6 |
| OTT | 10 | 6 | 4 | 4 | 3 | 4 | 11 | 12 | 9 | 3 | 5 | 6 | 11 | 19 | 13 | 25 | 25 | 13 | 33 | 34 | 46 | 17 | 6 | 16 |
| PAF | 12 | 4 | 3 | 5 | 3 | 9 | 14 | 10 | 7 | 7 | 5 | 6 | 8 | 6 | 3 | 15 | 9 | 6 | 6 | 22 | 36 | 16 | 12 | 12 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 9 | 16 | 13 | 13 | 2 | 7 | 9 | 14 | 8 | 5 | 4 | 4 | 6 | 10 | 4 | 21 | 10 | 4 | 6 | 5 | 16 | 11 | 2 | 2 |
| PPT | 3 | 2 | 2 | 2 | 0 | 1 | 2 | 4 | 5 | 3 | 2 | 2 | 2 | 3 | 2 | 7 | 3 | 6 | 9 | 5 | 13 | 6 | 13 | 11 |
| PST | ||||||||||||||||||||||||
| QSB | 8 | 3 | 4 | 7 | 1 | 3 | 7 | 10 | 18 | 11 | 4 | 3 | 13 | 14 | 14 | 23 | 8 | 6 | 8 | 7 | 26 | 20 | 8 | 14 |
| RES | 31 | 14 | 33 | 20 | 14 | 28 | 29 | 15 | 40 | 38 | 66 | 79 | 164 | 242 | 172 | 112 | 148 | 156 | 334 | 132 | 103 | 74 | 52 | 81 |
| SBA | 36 | 22 | 14 | 16 | 12 | 17 | 29 | 27 | 19 | 20 | 32 | 29 | 20 | 22 | 22 | 32 | 11 | 54 | 63 | 83 | 36 | 40 | 41 | 58 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 7 | 6 | 8 | 7 | 3 | 3 | 12 | 15 | 15 | 4 | 7 | 5 | 13 | 14 | 8 | 23 | 23 | 9 | 25 | 27 | 43 | 35 | 22 | 26 |
| SJG | 3 | 2 | 2 | 2 | 1 | 3 | 5 | 5 | 5 | 2 | 3 | 2 | 7 | 5 | 4 | 6 | 4 | 5 | 8 | 14 | 21 | 7 | 4 | 4 |
| SOD | 47 | 9 | 9 | 3 | 5 | 7 | 16 | 25 | 21 | 9 | 12 | 6 | 27 | 23 | 22 | 70 | 40 | 16 | 10 | 196 | 133 | 45 | 59 | 104 |
| SPT | 9 | 2 | 3 | 3 | 2 | 4 | 7 | 5 | 7 | 5 | 5 | 6 | 6 | 8 | 8 | 13 | 10 | 4 | 9 | 10 | 12 | 8 | 5 | 14 |
| STJ | 7 | 5 | 3 | 4 | 2 | 2 | 8 | 8 | 5 | 5 | 5 | 10 | 16 | 10 | 6 | 12 | 24 | 17 | 34 | 20 | 32 | 8 | 5 | 14 |
| SUA | 8 | 2 | 2 | 4 | 2 | 4 | 8 | 12 | 10 | 7 | 15 | 7 | 12 | 12 | 7 | 20 | 9 | 5 | 9 | 15 | 18 | 16 | 7 | 14 |
| TAM | 6 | 2 | 2 | 3 | 1 | 4 | 12 | 16 | 22 | 19 | 8 | 5 | 11 | 19 | 21 | 28 | 8 | 3 | 6 | 9 | 12 | 8 | 4 | 13 |
| TAN | 2 | 3 | 2 | 3 | 1 | 4 | 7 | 7 | 7 | 6 | 6 | 2 | 5 | 7 | 5 | 18 | 6 | 3 | 6 | 5 | 20 | 10 | 4 | 10 |
| TDC | ||||||||||||||||||||||||
| THL | 18 | 30 | 14 | 12 | 8 | 18 | 44 | 27 | 40 | 68 | 90 | 76 | 288 | 273 | 123 | 158 | 312 | 78 | 232 | 133 | 97 | 104 | 47 | 44 |
| THY | 10 | 3 | 2 | 5 | 2 | 3 | 5 | 11 | 9 | 6 | 9 | 7 | 9 | 11 | 6 | 19 | 16 | 8 | 12 | 9 | 18 | 18 | 9 | 15 |
| TRW | 20 | 16 | ||||||||||||||||||||||
| TSU | 6 | 2 | 2 | 2 | 3 | 7 | 9 | 8 | 9 | 3 | 4 | 7 | 7 | 10 | 4 | 17 | 7 | 4 | 8 | 11 | 17 | 7 | 5 | 15 |
| TUC | 6 | 2 | 4 | 3 | 2 | 5 | 7 | 10 | 10 | 4 | 5 | 4 | 9 | 9 | 6 | 23 | 9 | 5 | 8 | 12 | 25 | 25 | 6 | 9 |
| UPS | 7 | 2 | 4 | 3 | 1 | 3 | 7 | 15 | 12 | 9 | 8 | 8 | 14 | 12 | 11 | 42 | 34 | 16 | 19 | 13 | 21 | 22 | 13 | 18 |
| VAL | 14 | 3 | 3 | 3 | 2 | 2 | 6 | 5 | 5 | 9 | 6 | 3 | 6 | 8 | 5 | 21 | 23 | 16 | 23 | 19 | 15 | 8 | 5 | 18 |
| VIC | 8 | 3 | 6 | 6 | 3 | 3 | 7 | 12 | 12 | 4 | 5 | 4 | 11 | 10 | 5 | 24 | 21 | 16 | 14 | 24 | 33 | 32 | 17 | 18 |
| VSS | 2 | 3 | 3 | 2 | 2 | 3 | 5 | 5 | 6 | 7 | 8 | 8 | 10 | 6 | 6 | 25 | 15 | 9 | 12 | 20 | 11 | 10 | 4 | 7 |
| WNG | 13 | 3 | 3 | 4 | 3 | 1 | 8 | 13 | 11 | 6 | 7 | 5 | 11 | 13 | 9 | 42 | 27 | 14 | 23 | 15 | 28 | 20 | 16 | 24 |
| YKC | 38 | 32 | 22 | 12 | 17 | 12 | 60 | 62 | 44 | 31 | 36 | 36 | 26 | 42 | 40 | 82 | 47 | 27 | 27 | 76 | 137 | 130 | 50 | 112 |
- Date modified: