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 | 7 | 5 | 8 | 23 | 48 | 31 | 23 | 19 | 15 | 12 | 27 | 6 | 5 | 4 | 3 | 3 | 5 | 14 | 10 | 7 | 16 | 14 | 15 |
| ABG | 5 | 7 | 10 | 15 | 10 | 14 | 17 | 6 | 7 | 8 | 9 | 18 | 5 | 10 | 10 | 9 | 7 | 9 | 9 | 11 | 8 | 13 | 8 | 11 |
| ABK | 31 | 75 | 36 | 22 | 28 | 50 | 23 | 27 | 34 | 28 | 59 | 54 | 41 | 31 | 20 | 57 | 11 | 25 | 39 | 78 | 49 | 221 | 225 | 150 |
| AIA | 4 | 11 | 14 | 6 | 12 | 12 | 10 | 14 | 16 | 5 | 11 | 7 | 7 | 9 | 7 | 8 | 9 | 6 | 12 | 7 | 7 | 11 | 18 | 10 |
| AMS | 3 | 5 | 14 | 6 | 9 | 5 | 18 | 8 | 3 | 3 | 7 | 4 | 7 | 3 | 2 | 2 | 2 | 3 | 9 | 13 | 3 | 5 | 17 | 13 |
| API | 3 | 10 | 9 | 11 | 14 | 4 | 5 | 5 | 5 | 4 | 6 | 7 | 11 | 2 | 1 | 4 | 1 | 3 | 3 | 4 | 5 | 5 | 5 | 4 |
| AQU | 4 | 6 | 8 | 2 | 8 | 4 | 8 | 4 | 3 | 13 | 10 | 6 | 4 | 6 | 5 | 5 | 3 | 3 | 13 | 9 | 8 | 20 | 18 | 17 |
| ARS | ||||||||||||||||||||||||
| ASC | 3 | 9 | 6 | 2 | 3 | 5 | 3 | 9 | 4 | 8 | 5 | 3 | 3 | 5 | 8 | 6 | 11 | 9 | 11 | 4 | 5 | 9 | 16 | 15 |
| ASP | 4 | 8 | 4 | 7 | 17 | 6 | 15 | 3 | 9 | 4 | 4 | 7 | 9 | 3 | 3 | 5 | 2 | 3 | 4 | 5 | 3 | 10 | 6 | 5 |
| BDV | 4 | 5 | 8 | 3 | 9 | 4 | 10 | 7 | 5 | 7 | 11 | 10 | 7 | 9 | 8 | 6 | 5 | 4 | 15 | 10 | 10 | 23 | 16 | 18 |
| BEL | 5 | 4 | 7 | 4 | 12 | 6 | 14 | 10 | 8 | 9 | 12 | 15 | 13 | 15 | 10 | 12 | 6 | 7 | 20 | 12 | 11 | 25 | 13 | 16 |
| BFE | 6 | 6 | 10 | 5 | 8 | 8 | 14 | 11 | 11 | 10 | 17 | 22 | 18 | 17 | 13 | 17 | 10 | 11 | 25 | 18 | 14 | 28 | 13 | 18 |
| BFO | ||||||||||||||||||||||||
| BLC | 29 | 40 | 39 | 32 | 25 | 48 | 37 | 132 | 70 | 33 | 60 | 62 | 29 | 94 | 70 | 124 | 35 | 46 | 60 | 55 | 118 | 146 | 121 | 66 |
| BMT | 13 | 10 | 8 | 13 | 7 | 23 | 14 | 7 | 8 | 4 | 7 | 10 | 6 | 5 | 5 | 3 | 3 | 4 | 10 | 8 | 3 | 8 | 11 | 12 |
| BNG | 4 | 8 | 7 | 2 | 4 | 16 | 7 | 20 | 6 | |||||||||||||||
| BOU | 8 | 15 | 12 | 6 | 8 | 5 | 22 | 9 | 8 | 6 | 12 | 3 | 5 | 5 | 8 | 10 | 4 | 7 | 14 | 12 | 12 | 17 | 7 | 8 |
| BOX | 4 | 6 | 5 | 4 | 11 | 15 | 20 | 16 | 15 | 16 | 33 | 23 | 21 | 16 | 12 | 20 | 7 | 9 | 18 | 16 | 16 | 16 | 12 | 13 |
| BRW | 79 | 71 | 53 | 81 | 111 | 121 | 77 | 120 | 101 | 74 | 157 | 269 | 251 | 96 | 31 | 56 | 88 | 90 | 205 | 180 | 107 | 114 | 55 | 76 |
| BSL | 8 | 12 | 8 | 6 | 10 | 7 | 14 | 7 | 10 | 5 | 10 | 3 | 2 | 6 | 3 | 12 | 5 | 3 | 17 | 9 | 12 | 7 | 7 | 9 |
| CBB | 24 | 59 | 39 | 26 | 33 | 24 | 55 | 38 | 81 | 44 | 68 | 24 | 33 | 43 | 89 | 94 | 43 | 92 | 208 | 145 | 175 | 118 | 167 | 73 |
| CLF | 5 | 7 | 11 | 3 | 6 | 5 | 10 | 4 | 5 | 5 | 7 | 7 | 5 | 8 | 7 | 5 | 4 | 4 | 17 | 10 | 9 | 24 | 22 | 21 |
| CMO | 54 | 65 | 34 | 41 | 71 | 52 | 124 | 81 | 54 | 114 | 72 | 101 | 192 | 41 | 14 | 51 | 15 | 37 | 47 | 39 | 39 | 35 | 30 | 57 |
| CNB | 7 | 8 | 13 | 6 | 10 | 10 | 14 | 3 | 10 | 4 | 3 | 9 | 13 | 3 | 2 | 7 | 2 | 3 | 3 | 4 | 5 | 7 | 15 | 9 |
| CSY | ||||||||||||||||||||||||
| CTA | 9 | 10 | 9 | 8 | 18 | 7 | 11 | 2 | 9 | 4 | 4 | 9 | 12 | 3 | 2 | 6 | 1 | 3 | 4 | 4 | 7 | 7 | 7 | 3 |
| CZT | 3 | 10 | 10 | 3 | 6 | 8 | 16 | 12 | 4 | 5 | 6 | 4 | 8 | 6 | 3 | 3 | 2 | 3 | 8 | 17 | 5 | 9 | 9 | 12 |
| DLR | 7 | 11 | 9 | 6 | 9 | 6 | 18 | 6 | 9 | 5 | 10 | 3 | 5 | 3 | 6 | 8 | 5 | 3 | 16 | 12 | 8 | 7 | 5 | 11 |
| DOU | 6 | 8 | 12 | 4 | 6 | 8 | 10 | 6 | 7 | 7 | 10 | 12 | 7 | 10 | 10 | 6 | 6 | 7 | 17 | 13 | 11 | 26 | 23 | 21 |
| DRV | 82 | 78 | 75 | 33 | 77 | 22 | 16 | 51 | 41 | 33 | 14 | 15 | 34 | 13 | 14 | 15 | 6 | 14 | 14 | 29 | 53 | 52 | 34 | 35 |
| EBR | 5 | 10 | 12 | 3 | 16 | 17 | 11 | 7 | 14 | 13 | 11 | 9 | 6 | 12 | 10 | 11 | 10 | 8 | 20 | 19 | 10 | 23 | 22 | 21 |
| ESK | 10 | 10 | 16 | 6 | 8 | 12 | 14 | 9 | 11 | 11 | 14 | 18 | 15 | 18 | 19 | 19 | 14 | 14 | 28 | 24 | 17 | 37 | 32 | 24 |
| EUA | ||||||||||||||||||||||||
| EYR | 5 | 8 | 15 | 10 | 10 | 7 | 14 | 5 | 12 | 8 | 8 | 16 | 23 | 4 | 3 | 6 | 2 | 2 | 6 | 5 | 5 | 7 | 20 | 8 |
| FCC | 32 | 66 | 64 | 23 | 268 | 158 | 140 | 109 | 123 | 83 | 119 | 85 | 81 | 60 | 35 | 41 | 14 | 23 | 31 | 39 | 101 | 115 | 68 | 50 |
| FRD | 8 | 12 | 6 | 7 | 9 | 8 | 7 | 11 | 10 | 5 | 8 | 3 | 6 | 8 | 2 | 19 | 10 | 4 | 18 | 13 | 16 | 9 | 8 | 8 |
| FRN | 6 | 13 | 13 | 5 | 8 | 5 | 24 | 10 | 7 | 5 | 12 | 5 | 5 | 2 | 4 | 8 | 3 | 6 | 16 | 7 | 7 | 12 | 4 | 5 |
| FUR | 4 | 6 | 9 | 3 | 8 | 4 | 10 | 6 | 5 | 6 | 11 | 9 | 5 | 9 | 7 | 6 | 4 | 4 | 15 | 10 | 10 | 23 | 18 | 18 |
| GCK | ||||||||||||||||||||||||
| GDH | 26 | 43 | 68 | 91 | 37 | 40 | 70 | 30 | 88 | 100 | 203 | 139 | 77 | 109 | 40 | 43 | 39 | 116 | 107 | 68 | 27 | 38 | 391 | 32 |
| GNA | 3 | 13 | 3 | 5 | 8 | 6 | 13 | 6 | 7 | 5 | 4 | 6 | 6 | 2 | 3 | 4 | 2 | 3 | 4 | 7 | 3 | 5 | 9 | 9 |
| GUA | 13 | 11 | 8 | 9 | 18 | 6 | 8 | 4 | 4 | 3 | 4 | 8 | 9 | 3 | 2 | 4 | 2 | 2 | 6 | 2 | 5 | 6 | 11 | 16 |
| GUI | 4 | 8 | 11 | 3 | 3 | 5 | 8 | 5 | 7 | 12 | 12 | 2 | 5 | 5 | 4 | 3 | 11 | 14 | 19 | 5 | 6 | 14 | 20 | 17 |
| GZH | 3 | 5 | 13 | 11 | 11 | 6 | 11 | 5 | 6 | 2 | 4 | 9 | 6 | 4 | 3 | 2 | 1 | 3 | 6 | 6 | 3 | 4 | 8 | 4 |
| HAD | 6 | 9 | 14 | 4 | 5 | 7 | 9 | 5 | 7 | 6 | 7 | 11 | 8 | 10 | 11 | 7 | 9 | 10 | 20 | 14 | 11 | 27 | 25 | 24 |
| HBK | 5 | 8 | 7 | 3 | 6 | 12 | 8 | 4 | 11 | 4 | 9 | 17 | 5 | 3 | 8 | 9 | 3 | 4 | 15 | 10 | 5 | 16 | 18 | 12 |
| HER | 5 | 8 | 6 | 2 | 7 | 8 | 7 | 6 | 7 | 5 | 7 | 15 | 6 | 2 | 10 | 11 | 5 | 2 | 13 | 7 | 5 | 14 | 17 | 9 |
| HLP | 5 | 5 | 8 | 7 | 10 | 9 | 14 | 11 | 10 | 13 | 18 | 19 | 16 | 16 | 12 | 14 | 9 | 10 | 20 | 16 | 14 | 24 | 11 | 15 |
| HON | 3 | 9 | 4 | 5 | 6 | 5 | 6 | 5 | 3 | 3 | 7 | 6 | 10 | 2 | 2 | 6 | 7 | 1 | 10 | 5 | 4 | 8 | 4 | 8 |
| HRB | 3 | 5 | 7 | 3 | 10 | 4 | 10 | 6 | 5 | 10 | 12 | 11 | 5 | 9 | 7 | 7 | 5 | 4 | 15 | 10 | 10 | 23 | 15 | 17 |
| HRN | 37 | 37 | 81 | 77 | 74 | 153 | 88 | 52 | 140 | 79 | 171 | 83 | 104 | 70 | 21 | 62 | 26 | 28 | 68 | 98 | 44 | 52 | 36 | 22 |
| HUA | 4 | 7 | 5 | 5 | 9 | 7 | 10 | 5 | 5 | 3 | 8 | 5 | 36 | 41 | 47 | 18 | 9 | 30 | 74 | 38 | 27 | 10 | 20 | 16 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 18 | 158 | 163 | 70 | 38 | 49 | 47 | 80 | 137 | 126 | 171 | 106 | 80 | 116 | 26 | 71 | 27 | 74 | 173 | 119 | 120 | 55 | 155 | 53 |
| IRT | 16 | 12 | 7 | 6 | 6 | 30 | 19 | 19 | 15 | 10 | 14 | 16 | 8 | 8 | 8 | 9 | 3 | 7 | 17 | 11 | 5 | 11 | 14 | 11 |
| IZN | ||||||||||||||||||||||||
| KAK | 4 | 5 | 8 | 9 | 8 | 8 | 11 | 8 | 8 | 3 | 4 | 7 | 6 | 3 | 3 | 2 | 1 | 2 | 5 | 4 | 4 | 5 | 18 | 13 |
| KDU | 5 | 7 | 5 | 8 | 18 | 8 | 12 | 4 | 7 | 4 | 3 | 8 | 9 | 2 | 2 | 4 | 2 | 3 | 4 | 5 | 2 | 11 | 5 | 5 |
| KMH | ||||||||||||||||||||||||
| KNY | 4 | 4 | 5 | 9 | 8 | 10 | 10 | 8 | 8 | 3 | 5 | 8 | 6 | 4 | 4 | 2 | 1 | 2 | 6 | 5 | 4 | 3 | 18 | 14 |
| KOU | 3 | 4 | 6 | 3 | 4 | 4 | 3 | 5 | 3 | 5 | 7 | 5 | 19 | 10 | 6 | 5 | 6 | 13 | 23 | 9 | 8 | 4 | 13 | 12 |
| LER | 9 | 9 | 7 | 6 | 8 | 9 | 10 | 10 | 9 | 11 | 13 | 20 | 20 | 22 | 17 | 19 | 12 | 17 | 25 | 28 | 12 | 29 | 20 | 21 |
| LRM | 2 | 12 | 5 | 4 | 12 | 7 | 15 | 5 | 6 | 5 | 5 | 6 | 6 | 3 | 3 | 5 | 3 | 2 | 5 | 9 | 3 | 5 | 7 | 15 |
| LVV | 4 | 3 | 7 | 3 | 13 | 5 | 13 | 8 | 5 | 9 | 11 | 13 | 10 | 12 | 7 | 8 | 7 | 7 | 14 | 12 | 13 | 22 | 12 | 15 |
| LYC | ||||||||||||||||||||||||
| LZH | 13 | 13 | 5 | 9 | 6 | 21 | 9 | 6 | 6 | 4 | 7 | 12 | 7 | 5 | 5 | 3 | 2 | 3 | 10 | 9 | 3 | 7 | 6 | 9 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 7 | 10 | 3 | 3 | 5 | 2 | 12 | 12 | 19 | 12 | 10 | 3 | 8 | 8 | 9 | 11 | 12 | 17 | 5 | 8 | 10 | 18 | 15 |
| MCQ | 11 | 18 | 23 | 13 | 24 | 26 | 27 | 26 | 19 | 16 | 20 | 27 | 101 | 32 | 14 | 10 | 9 | 6 | 16 | 11 | 20 | 18 | 28 | 17 |
| MEA | 27 | 41 | 20 | 12 | 26 | 12 | 43 | 44 | 25 | 25 | 25 | 24 | 17 | 15 | 16 | 16 | 12 | 15 | 30 | 10 | 33 | 43 | 37 | 23 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 4 | 5 | 14 | 13 | 12 | 16 | 20 | 7 | 11 | 5 | 6 | 8 | 6 | 5 | 5 | 4 | 2 | 3 | 7 | 6 | 6 | 10 | 18 | 14 |
| NAQ | 35 | 144 | 120 | 34 | 89 | 55 | 105 | 66 | 91 | 37 | 49 | 44 | 16 | 30 | 22 | 25 | 21 | 41 | 95 | 55 | 45 | 63 | 190 | 108 |
| NCK | 4 | 5 | 7 | 3 | 8 | 4 | 9 | 5 | 4 | 9 | 11 | 10 | 4 | 8 | 6 | 6 | 3 | 4 | 13 | 10 | 9 | 21 | 15 | 15 |
| NEW | 16 | 28 | 17 | 9 | 18 | 7 | 32 | 11 | 8 | 11 | 18 | 4 | 6 | 4 | 10 | 9 | 7 | 14 | 20 | 11 | 19 | 22 | 20 | 15 |
| NGK | 5 | 6 | 8 | 4 | 9 | 5 | 13 | 8 | 8 | 8 | 13 | 15 | 12 | 13 | 11 | 11 | 8 | 8 | 19 | 14 | 12 | 27 | 17 | 19 |
| NUR | 4 | 9 | 4 | 5 | 9 | 16 | 17 | 15 | 15 | 15 | 29 | 24 | 25 | 20 | 15 | 23 | 9 | 11 | 21 | 14 | 14 | 16 | 16 | 16 |
| NVS | 8 | 11 | 11 | 9 | 15 | 17 | 14 | 18 | 13 | 13 | 16 | 14 | 9 | 9 | 5 | 8 | 4 | 3 | 12 | 10 | 5 | 7 | 12 | 12 |
| OTT | 10 | 18 | 9 | 8 | 11 | 10 | 15 | 17 | 7 | 7 | 12 | 7 | 9 | 13 | 9 | 20 | 15 | 16 | 18 | 16 | 24 | 18 | 15 | 11 |
| PAF | 2 | 16 | 19 | 8 | 9 | 14 | 18 | 8 | 7 | 6 | 14 | 7 | 9 | 7 | 3 | 5 | 4 | 3 | 8 | 29 | 7 | 17 | 42 | 24 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 4 | 7 | 14 | 13 | 14 | 10 | 15 | 7 | 7 | 3 | 7 | 12 | 7 | 5 | 4 | 2 | 2 | 4 | 8 | 9 | 4 | 6 | 7 | 8 |
| PPT | 5 | 7 | 6 | 3 | 8 | 4 | 8 | 6 | 3 | 2 | 7 | 5 | 8 | 2 | 1 | 5 | 3 | 3 | 6 | 4 | 5 | 3 | 8 | 4 |
| PST | ||||||||||||||||||||||||
| QSB | 4 | 6 | 7 | 3 | 11 | 5 | 11 | 10 | 12 | 22 | 7 | 13 | 4 | 9 | 12 | 5 | 4 | 3 | 17 | 12 | 10 | 22 | 16 | 16 |
| RES | 52 | 28 | 21 | 20 | 37 | 35 | 47 | 30 | 34 | 32 | 84 | 31 | 63 | 61 | 68 | 128 | 99 | 112 | 79 | 116 | 141 | 81 | 75 | 61 |
| SBA | 34 | 33 | 21 | 34 | 44 | 34 | 43 | 24 | 35 | 12 | 50 | 42 | 31 | 19 | 32 | 29 | 18 | 29 | 48 | 16 | 44 | 46 | 31 | 44 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 21 | 30 | 22 | 12 | 30 | 12 | 26 | 11 | 11 | 13 | 22 | 11 | 8 | 8 | 7 | 8 | 9 | 13 | 22 | 9 | 13 | 20 | 15 | 22 |
| SJG | 3 | 4 | 3 | 3 | 4 | 4 | 4 | 4 | 5 | 3 | 4 | 2 | 9 | 10 | 8 | 10 | 1 | 6 | 18 | 8 | 7 | 3 | 9 | 7 |
| SOD | 17 | 31 | 22 | 14 | 17 | 45 | 18 | 24 | 28 | 24 | 51 | 47 | 37 | 26 | 20 | 47 | 10 | 21 | 21 | 67 | 33 | 96 | 179 | 87 |
| SPT | 5 | 9 | 12 | 3 | 5 | 5 | 11 | 5 | 4 | 9 | 10 | 2 | 7 | 7 | 7 | 6 | 7 | 8 | 17 | 8 | 8 | 21 | 23 | 21 |
| STJ | 6 | 15 | 11 | 6 | 8 | 8 | 18 | 13 | 3 | 13 | 15 | 6 | 11 | 8 | 10 | 10 | 19 | 17 | 23 | 16 | 16 | 14 | 11 | 7 |
| SUA | 3 | 5 | 7 | 5 | 10 | 4 | 9 | 6 | 5 | 15 | 13 | 10 | 4 | 8 | 3 | 7 | 5 | 6 | 16 | 11 | 10 | 19 | 14 | 14 |
| TAM | 4 | 8 | 9 | 3 | 5 | 8 | 5 | 17 | 14 | 13 | 6 | 9 | 4 | 7 | 11 | 7 | 10 | 8 | 16 | 8 | 8 | 17 | 21 | 18 |
| TAN | 3 | 5 | 4 | 8 | 6 | 15 | 7 | 5 | 15 | 9 | 15 | 13 | 2 | 5 | 4 | 4 | 1 | 4 | 12 | 10 | 5 | 13 | 12 | 8 |
| TDC | ||||||||||||||||||||||||
| THL | 33 | 48 | 21 | 22 | 54 | 41 | 54 | 31 | 44 | 30 | 89 | 44 | 22 | 39 | 104 | 205 | 95 | 108 | 71 | 41 | 24 | 62 | 72 | 18 |
| THY | 4 | 6 | 8 | 3 | 9 | 5 | 9 | 6 | 5 | 11 | 13 | 12 | 4 | 8 | 7 | 7 | 4 | 4 | 15 | 11 | 11 | 23 | 16 | 16 |
| TRW | 4 | 5 | 6 | 3 | 9 | 5 | 8 | 8 | 9 | 6 | 6 | 9 | 8 | 5 | 4 | 3 | 3 | 3 | 13 | 7 | 6 | 5 | 13 | 13 |
| TSU | 5 | 9 | 9 | 3 | 7 | 12 | 6 | 5 | 7 | 5 | 11 | 17 | 3 | 5 | 3 | 9 | 3 | 4 | 16 | 9 | 7 | 16 | 21 | 17 |
| TUC | 5 | 12 | 11 | 5 | 7 | 5 | 21 | 8 | 8 | 5 | 11 | 5 | 6 | 2 | 4 | 9 | 3 | 5 | 15 | 10 | 10 | 8 | 5 | 10 |
| UPS | 4 | 9 | 4 | 4 | 7 | 9 | 12 | 10 | 12 | 12 | 20 | 21 | 22 | 19 | 15 | 19 | 9 | 12 | 18 | 15 | 12 | 18 | 8 | 11 |
| VAL | 6 | 9 | 14 | 4 | 6 | 6 | 10 | 4 | 7 | 5 | 7 | 9 | 9 | 9 | 9 | 6 | 11 | 11 | 17 | 16 | 10 | 25 | 24 | 23 |
| VIC | 13 | 24 | 16 | 8 | 18 | 10 | 30 | 14 | 7 | 9 | 16 | 4 | 5 | 3 | 6 | 7 | 8 | 12 | 18 | 7 | 16 | 20 | 14 | 14 |
| VSS | 4 | 7 | 8 | 3 | 5 | 4 | 3 | 5 | 4 | 8 | 7 | 5 | 7 | 9 | 4 | 9 | 10 | 9 | 17 | 7 | 6 | 6 | 18 | 15 |
| WNG | 6 | 6 | 9 | 5 | 9 | 8 | 13 | 9 | 9 | 10 | 14 | 19 | 15 | 15 | 13 | 14 | 11 | 10 | 24 | 19 | 13 | 32 | 18 | 19 |
| YKC | 28 | 63 | 80 | 28 | 45 | 25 | 388 | 236 | 143 | 28 | 85 | 105 | 35 | 57 | 20 | 64 | 20 | 31 | 55 | 46 | 69 | 97 | 107 | 57 |
- Date modified: