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 | 5 | 6 | 8 | 6 | 9 | 7 | 10 | 17 | 2 | 4 | 5 | 5 | 3 | 5 | 4 | 2 | 7 | 4 | 6 | 4 | 3 | 16 | 5 | |
| ABG | 8 | 13 | 5 | 20 | 24 | 12 | 2 | 1 | 4 | 13 | 12 | 9 | 3 | 8 | 2 | 1 | 3 | 5 | 5 | 3 | 2 | 2 | 6 | 3 |
| ABK | 238 | 97 | 30 | 38 | 20 | 18 | 30 | 8 | 7 | 22 | 9 | 8 | 8 | 10 | 10 | 7 | 7 | 10 | 41 | 37 | 31 | 199 | 539 | 352 |
| AIA | 31 | 15 | 44 | 25 | 13 | 8 | 8 | 5 | 2 | 7 | 4 | 4 | 2 | 3 | 4 | 8 | 9 | 4 | 7 | 10 | 8 | 8 | 68 | 45 |
| AMS | 11 | 10 | 9 | 13 | 6 | 4 | 7 | 7 | 2 | 3 | 3 | 6 | 4 | 3 | 1 | 1 | 2 | 10 | 17 | 10 | 7 | 34 | 52 | 8 |
| API | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 |
| AQU | 15 | 12 | 12 | 9 | 13 | 7 | 6 | 4 | 11 | 13 | 18 | 15 | 9 | 4 | 6 | 10 | 8 | 9 | 3 | 13 | 7 | 14 | 29 | 9 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 1 | 5 | 6 | 3 | 2 | 2 | 6 | 14 | 14 | 12 | 10 | 6 | 19 | 16 | 10 | 3 | 4 | 5 | 5 | 3 | 4 | 15 | 3 |
| ASP | 8 | 4 | 3 | 9 | 7 | 6 | 8 | 7 | 5 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 6 | 14 | 13 | 5 | 10 | 17 | 20 |
| BDV | 21 | 15 | 15 | 13 | 14 | 5 | 8 | 7 | 10 | 9 | 20 | 14 | 10 | 5 | 7 | 8 | 7 | 9 | 3 | 16 | 8 | 16 | 36 | 13 |
| BEL | 29 | 15 | 14 | 12 | 12 | 8 | 9 | 12 | 17 | 13 | 17 | 12 | 4 | 8 | 9 | 9 | 7 | 9 | 4 | 17 | 10 | 7 | 50 | 16 |
| BFE | 37 | 20 | 22 | 21 | 15 | 7 | 10 | 8 | 12 | 10 | 12 | 21 | 7 | 3 | 7 | 7 | 6 | 10 | 6 | 20 | 10 | 27 | 63 | 22 |
| BFO | ||||||||||||||||||||||||
| BLC | 25 | 40 | 133 | 129 | 95 | 93 | 23 | 30 | 10 | 22 | 23 | 13 | 18 | 59 | 37 | 15 | 60 | 29 | 117 | 47 | 78 | 111 | 91 | 29 |
| BMT | 2 | 1 | 3 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| BNG | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 1 | 0 | 0 | 1 | 0 |
| BOU | 5 | 9 | 30 | 19 | 13 | 3 | 4 | 2 | 2 | 4 | 4 | 7 | 8 | 12 | 11 | 4 | 5 | 22 | 23 | 15 | 4 | 8 | 10 | 11 |
| BOX | 38 | 14 | 9 | 15 | 7 | 7 | 14 | 11 | 16 | 15 | 9 | 5 | 7 | 8 | 7 | 6 | 6 | 13 | 11 | 17 | 11 | 41 | 86 | 19 |
| BRW | 54 | 47 | 69 | 71 | 32 | 55 | 52 | 29 | 10 | 38 | 25 | 14 | 14 | 38 | 48 | 27 | 35 | 30 | 62 | 79 | 90 | 61 | 67 | 66 |
| BSL | 4 | 9 | 24 | 10 | 9 | 5 | 2 | 1 | 2 | 4 | 6 | 11 | 11 | 13 | 15 | 23 | 11 | 13 | 14 | 6 | 6 | 4 | 15 | 17 |
| CBB | 46 | 43 | 68 | 102 | 42 | 55 | 23 | 34 | 15 | 28 | 28 | 11 | 42 | 49 | 34 | 17 | 58 | 52 | 125 | 49 | 62 | 132 | 55 | 37 |
| CLF | 18 | 20 | 21 | 16 | 12 | 8 | 8 | 3 | 7 | 13 | 16 | 17 | 16 | 6 | 6 | 6 | 7 | 12 | 9 | 15 | 10 | 34 | 36 | 11 |
| CMO | 23 | 24 | 38 | 39 | 16 | 15 | 17 | 11 | 7 | 18 | 11 | 5 | 6 | 14 | 17 | 8 | 19 | 22 | 22 | 32 | 52 | 26 | 27 | 37 |
| CNB | 12 | 5 | 7 | 15 | 4 | 3 | 7 | 4 | 2 | 2 | 2 | 1 | 1 | 3 | 3 | 2 | 3 | 11 | 16 | 16 | 5 | 4 | 20 | 16 |
| CSY | ||||||||||||||||||||||||
| CTA | 8 | 6 | 5 | 13 | 6 | 2 | 5 | 5 | 2 | 2 | 1 | 1 | 1 | 2 | 3 | 1 | 3 | 6 | 10 | 10 | 4 | 6 | 7 | 16 |
| CZT | 18 | 12 | 35 | 27 | 7 | 10 | 8 | 2 | 10 | 13 | 2 | 1 | 5 | 6 | 4 | 2 | 3 | 5 | 10 | 7 | 4 | 14 | 40 | 16 |
| DLR | 2 | 6 | 16 | 7 | 8 | 3 | 3 | 2 | 1 | 3 | 2 | 5 | 10 | 14 | 10 | 6 | 4 | 13 | 6 | 3 | 12 | 8 | 13 | |
| DOU | 21 | 21 | 22 | 17 | 14 | 8 | 9 | 3 | 8 | 11 | 16 | 20 | 14 | 5 | 7 | 7 | 6 | 11 | 8 | 17 | 10 | 36 | 39 | 13 |
| DRV | 32 | 105 | 87 | 76 | 16 | 41 | 58 | 21 | 4 | 20 | 9 | 5 | 6 | 9 | 7 | 8 | 9 | 44 | 67 | 86 | 53 | 72 | 128 | 103 |
| EBR | 1 | 2 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 3 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 1 | 2 | 1 | 5 | 2 | 1 |
| ESK | 23 | 28 | 28 | 23 | 15 | 6 | 9 | 4 | 2 | 11 | 16 | 18 | 19 | 8 | 7 | 4 | 6 | 11 | 19 | 15 | 13 | 54 | 52 | 14 |
| EUA | ||||||||||||||||||||||||
| EYR | 13 | 10 | 18 | 11 | 4 | 4 | 4 | 3 | 4 | 2 | 3 | 1 | 2 | 4 | 3 | 2 | 4 | 7 | 12 | 8 | 12 | 12 | 6 | 16 |
| FCC | 30 | 81 | 140 | 112 | 119 | 123 | 44 | 25 | 34 | 31 | 10 | 13 | 9 | 21 | 19 | 12 | 29 | 35 | 69 | 33 | 48 | 112 | 95 | 155 |
| FRD | 6 | 12 | 29 | 11 | 11 | 9 | 3 | 3 | 2 | 8 | 11 | 11 | 8 | 7 | 14 | 18 | 14 | 19 | 9 | 4 | 14 | 5 | 17 | 20 |
| FRN | 5 | 10 | 15 | 8 | 8 | 4 | 4 | 4 | 2 | 2 | 2 | 2 | 6 | 6 | 7 | 9 | 11 | 19 | 21 | 12 | 4 | 11 | 14 | 8 |
| FUR | 20 | 17 | 17 | 13 | 15 | 6 | 8 | 6 | 8 | 11 | 18 | 16 | 12 | 4 | 6 | 9 | 7 | 9 | 4 | 15 | 8 | 21 | 35 | 13 |
| GCK | ||||||||||||||||||||||||
| GDH | 32 | 62 | 71 | 27 | 18 | 48 | 59 | 31 | 37 | 57 | 29 | 18 | 27 | 68 | 40 | 25 | 73 | 80 | 32 | 34 | 45 | 96 | 76 | 93 |
| GNA | 17 | 13 | 8 | 14 | 7 | 4 | 10 | 5 | 6 | 4 | 2 | 2 | 2 | 3 | 3 | 2 | 3 | 17 | 34 | 32 | 11 | 25 | 32 | 30 |
| GUA | 8 | 2 | 3 | 4 | 3 | 5 | 7 | 1 | 4 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 3 | 3 | 6 | 4 | 7 | 5 | 8 | 14 |
| GUI | 9 | 9 | 10 | 5 | 6 | 3 | 10 | 1 | 1 | 7 | 15 | 12 | 17 | 8 | 6 | 4 | 3 | 13 | 14 | 12 | 5 | 20 | 10 | 4 |
| GZH | 1 | 1 | 2 | 1 | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 | 1 | 0 |
| HAD | 15 | 22 | 24 | 16 | 12 | 7 | 8 | 2 | 2 | 10 | 19 | 16 | 16 | 7 | 4 | 3 | 3 | 10 | 10 | 14 | 9 | 47 | 33 | 8 |
| HBK | 5 | 5 | 19 | 17 | 5 | 9 | 14 | 9 | 2 | 14 | 13 | 9 | 10 | 4 | 10 | 10 | 4 | 6 | 7 | 7 | 2 | 13 | 19 | 6 |
| HER | 6 | 7 | 24 | 19 | 3 | 3 | 9 | 10 | 5 | 8 | 11 | 14 | 9 | 6 | 7 | 13 | 5 | 5 | 7 | 7 | 2 | 23 | 25 | 9 |
| HLP | 40 | 19 | 20 | 16 | 11 | 8 | 10 | 12 | 15 | 12 | 18 | 11 | 5 | 8 | 8 | 9 | 5 | 12 | 11 | 16 | 15 | 13 | 72 | 23 |
| HON | 3 | 13 | 8 | 4 | 10 | 3 | 2 | 3 | 2 | 1 | 1 | 1 | 1 | 3 | 3 | 3 | 15 | 4 | 11 | 14 | 18 | 19 | 14 | 9 |
| HRB | 22 | 14 | 13 | 12 | 13 | 5 | 8 | 9 | 14 | 11 | 19 | 14 | 5 | 8 | 9 | 8 | 7 | 9 | 3 | 16 | 8 | 12 | 38 | 14 |
| HRN | 128 | 72 | 113 | 77 | 96 | 118 | 137 | 18 | 19 | 48 | 17 | 13 | 17 | 44 | 19 | 11 | 45 | 40 | 75 | 90 | 64 | 79 | 228 | 148 |
| HUA | 4 | 5 | 1 | 4 | 2 | 3 | 2 | 2 | 2 | 2 | 4 | 5 | 4 | 6 | 8 | 3 | 6 | 4 | 11 | 3 | 5 | 11 | 10 | 5 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 49 | 80 | 178 | 172 | 74 | 81 | 48 | 43 | 29 | 39 | 22 | 18 | 24 | 46 | 50 | 19 | 82 | 64 | 69 | 55 | 54 | 93 | 167 | 211 |
| IRT | 14 | 9 | 20 | 20 | 7 | 12 | 7 | 1 | 2 | 8 | 7 | 4 | 3 | 3 | 4 | 3 | 2 | 14 | 14 | 9 | 7 | 13 | 21 | 14 |
| IZN | ||||||||||||||||||||||||
| KAK | 3 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 |
| KDU | 7 | 4 | 3 | 6 | 8 | 7 | 3 | 4 | 6 | 3 | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 4 | 9 | 9 | 4 | 9 | 8 | 14 |
| KMH | ||||||||||||||||||||||||
| KNY | 3 | 1 | 2 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| KOU | 2 | 2 | 4 | 6 | 3 | 2 | 2 | 1 | 5 | 8 | 8 | 5 | 5 | 9 | 13 | 10 | 14 | 8 | 6 | 8 | 18 | 18 | 6 | 6 |
| LER | 29 | 32 | 27 | 24 | 17 | 6 | 8 | 4 | 5 | 9 | 11 | 18 | 16 | 5 | 5 | 3 | 5 | 9 | 14 | 16 | 9 | 65 | 79 | 21 |
| LRM | 10 | 8 | 9 | 11 | 8 | 5 | 10 | 5 | 4 | 5 | 3 | 1 | 2 | 1 | 3 | 2 | 2 | 8 | 24 | 17 | 6 | 22 | 11 | 17 |
| LVV | 24 | 12 | 12 | 12 | 11 | 8 | 8 | 11 | 20 | 13 | 18 | 9 | 4 | 7 | 12 | 11 | 5 | 10 | 5 | 15 | 8 | 6 | 47 | 15 |
| LYC | ||||||||||||||||||||||||
| LZH | 6 | 4 | 19 | 19 | 12 | 5 | 4 | 1 | 4 | 8 | 10 | 2 | 3 | 3 | 4 | 3 | 2 | 8 | 9 | 5 | 5 | 6 | 6 | 8 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 5 | 6 | 7 | 5 | 5 | 3 | 6 | 1 | 5 | 10 | 20 | 12 | 11 | 3 | 7 | 10 | 6 | 13 | 11 | 10 | 5 | 13 | 11 | 5 |
| MCQ | 14 | 13 | 22 | 24 | 9 | 5 | 10 | 4 | 3 | 7 | 6 | 2 | 2 | 5 | 5 | 2 | 7 | 11 | 34 | 23 | 16 | 19 | 42 | 35 |
| MEA | 12 | 16 | 48 | 37 | 17 | 14 | 15 | 11 | 6 | 5 | 7 | 6 | 7 | 12 | 15 | 7 | 13 | 25 | 44 | 24 | 13 | 18 | 27 | 29 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 4 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 2 | 1 | 2 | 2 | 2 | 1 |
| NAQ | 164 | 72 | 157 | 122 | 58 | 85 | 25 | 13 | 11 | 20 | 10 | 9 | 14 | 20 | 21 | 16 | 23 | 14 | 28 | 31 | 27 | 61 | 137 | 69 |
| NCK | 20 | 14 | 13 | 12 | 12 | 5 | 7 | 8 | 11 | 10 | 17 | 13 | 7 | 6 | 8 | 8 | 6 | 9 | 4 | 15 | 9 | 12 | 34 | 13 |
| NEW | 4 | 13 | 33 | 21 | 14 | 8 | 9 | 8 | 3 | 3 | 5 | 5 | 6 | 7 | 10 | 4 | 13 | 19 | 34 | 17 | 6 | 9 | 10 | 10 |
| NGK | 27 | 19 | 19 | 17 | 15 | 5 | 9 | 8 | 11 | 9 | 16 | 18 | 9 | 5 | 8 | 7 | 7 | 10 | 5 | 18 | 9 | 23 | 43 | 18 |
| NUR | 56 | 19 | 14 | 18 | 10 | 7 | 13 | 9 | 14 | 14 | 15 | 6 | 5 | 8 | 6 | 9 | 4 | 10 | 8 | 20 | 12 | 37 | 104 | 24 |
| NVS | 15 | 19 | 15 | 8 | 11 | 16 | 19 | 7 | 4 | 6 | 12 | 6 | 8 | 6 | 6 | 4 | 5 | 18 | 14 | 10 | 9 | 24 | 40 | 18 |
| OTT | 11 | 26 | 55 | 24 | 18 | 18 | 5 | 4 | 3 | 13 | 11 | 12 | 9 | 10 | 17 | 21 | 17 | 21 | 10 | 6 | 18 | 7 | 24 | 41 |
| PAF | 28 | 17 | 22 | 24 | 7 | 5 | 10 | 4 | 8 | 4 | 3 | 5 | 5 | 3 | 3 | 2 | 4 | 6 | 18 | 14 | 13 | 68 | 86 | 21 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 6 | 9 | 19 | 14 | 9 | 2 | 4 | 4 | 4 | 7 | 3 | 2 | 2 | 3 | 3 | 3 | 3 | 5 | 7 | 5 | 5 | 3 | 7 | 7 |
| PPT | 9 | 5 | 13 | 5 | 4 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 5 | 8 | 14 | 5 | 4 | 3 | 5 | 9 |
| PST | ||||||||||||||||||||||||
| QSB | 12 | 5 | 5 | 8 | 16 | 7 | 8 | 20 | 27 | 15 | 5 | 2 | 6 | 9 | 7 | 5 | 4 | 10 | 3 | 10 | 7 | 9 | 30 | 7 |
| RES | 16 | 18 | 53 | 84 | 22 | 44 | 41 | 39 | 10 | 34 | 29 | 17 | 17 | 46 | 36 | 23 | 186 | 107 | 114 | 80 | 31 | 85 | 57 | 28 |
| SBA | 44 | 70 | 37 | 41 | 20 | 23 | 34 | 15 | 13 | 20 | 11 | 16 | 16 | 21 | 19 | 12 | 17 | 28 | 25 | 33 | 68 | 55 | 114 | 113 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 13 | 15 | 18 | 28 | 10 | 12 | 10 | 9 | 8 | 7 | 4 | 4 | 5 | 9 | 14 | 7 | 8 | 17 | 38 | 32 | 17 | 14 | 14 | 20 |
| SJG | 2 | 4 | 7 | 4 | 2 | 4 | 1 | 1 | 2 | 5 | 12 | 7 | 3 | 4 | 9 | 12 | 20 | 18 | 6 | 4 | 12 | 11 | 12 | 5 |
| SOD | 104 | 46 | 19 | 31 | 8 | 13 | 25 | 6 | 9 | 17 | 9 | 5 | 4 | 8 | 8 | 7 | 5 | 8 | 31 | 34 | 20 | 157 | 132 | 222 |
| SPT | 10 | 13 | 14 | 7 | 8 | 7 | 10 | 5 | 4 | 12 | 23 | 15 | 12 | 4 | 3 | 3 | 5 | 12 | 8 | 11 | 6 | 29 | 17 | 5 |
| STJ | 15 | 12 | 20 | 12 | 7 | 6 | 7 | 6 | 13 | 13 | 11 | 6 | 8 | 13 | 17 | 18 | 17 | 8 | 13 | 10 | 19 | 26 | 35 | 18 |
| SUA | 17 | 9 | 8 | 11 | 9 | 8 | 6 | 13 | 19 | 17 | 18 | 3 | 3 | 5 | 13 | 9 | 6 | 8 | 6 | 9 | 6 | 5 | 38 | 12 |
| TAM | 8 | 8 | 7 | 6 | 8 | 10 | 7 | 3 | 8 | 12 | 19 | 6 | 3 | 3 | 7 | 7 | 3 | 7 | 3 | 10 | 7 | 13 | 17 | 6 |
| TAN | 3 | 4 | 13 | 7 | 11 | 12 | 7 | 6 | 7 | 6 | 7 | 7 | 2 | 9 | 8 | 1 | 2 | 3 | 5 | 3 | 2 | 3 | 11 | 4 |
| TDC | ||||||||||||||||||||||||
| THL | 17 | 50 | 29 | 45 | 22 | 37 | 63 | 38 | 18 | 44 | 23 | 15 | 41 | 64 | 59 | 72 | 102 | 36 | 86 | 67 | 47 | 89 | 56 | 53 |
| THY | 22 | 14 | 13 | 12 | 14 | 5 | 7 | 9 | 14 | 11 | 20 | 14 | 5 | 7 | 9 | 8 | 7 | 9 | 4 | 16 | 9 | 11 | 38 | 13 |
| TRW | 10 | 6 | 16 | 11 | 6 | 3 | 4 | 2 | 3 | 2 | 2 | 2 | 9 | 7 | 4 | 12 | 16 | 7 | 9 | 5 | 7 | 3 | 25 | 16 |
| TSU | 5 | 4 | 15 | 13 | 3 | 3 | 13 | 16 | 4 | 13 | 12 | 8 | 9 | 6 | 4 | 12 | 9 | 6 | 6 | 7 | 4 | 14 | 19 | 5 |
| TUC | 5 | 5 | 16 | 7 | 9 | 2 | 3 | 2 | 2 | 3 | 2 | 3 | 7 | 9 | 13 | 6 | 5 | 20 | 20 | 11 | 6 | 10 | 12 | 11 |
| UPS | 53 | 21 | 17 | 15 | 11 | 7 | 11 | 9 | 12 | 10 | 14 | 12 | 5 | 5 | 7 | 6 | 3 | 9 | 7 | 20 | 11 | 18 | 91 | 26 |
| VAL | 13 | 24 | 26 | 16 | 11 | 7 | 8 | 4 | 5 | 9 | 17 | 15 | 16 | 10 | 5 | 2 | 3 | 8 | 11 | 12 | 8 | 56 | 28 | 8 |
| VIC | 4 | 14 | 25 | 18 | 11 | 8 | 6 | 7 | 3 | 3 | 4 | 3 | 6 | 8 | 10 | 4 | 11 | 16 | 32 | 19 | 6 | 8 | 11 | 8 |
| VSS | 4 | 4 | 4 | 6 | 3 | 3 | 3 | 2 | 5 | 4 | 10 | 14 | 8 | 2 | 3 | 5 | 6 | 7 | 4 | 4 | 5 | 5 | 14 | 6 |
| WNG | 32 | 21 | 22 | 20 | 17 | 6 | 9 | 7 | 10 | 10 | 12 | 22 | 10 | 4 | 7 | 6 | 6 | 11 | 7 | 19 | 11 | 28 | 53 | 20 |
| YKC | 38 | 28 | 122 | 69 | 30 | 41 | 34 | 35 | 50 | 30 | 64 | 17 | 11 | 16 | 31 | 13 | 18 | 29 | 70 | 38 | 49 | 90 | 134 | 110 |
- Date modified: