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 | 4 | 6 | 21 | 4 | 14 | 6 | 10 | 10 | 4 | 4 | 4 | 9 | 7 | 8 | 10 | 7 | 16 | 10 | 4 | 5 | 4 | 3 | 4 |
| ABG | 11 | 11 | 2 | 12 | 18 | 21 | 16 | 7 | 8 | 10 | 7 | 13 | 6 | 2 | 5 | 4 | 3 | 8 | 7 | 5 | 3 | 2 | 5 | 4 |
| ABK | 116 | 71 | 33 | 43 | 49 | 55 | 37 | 21 | 29 | 36 | 27 | 14 | 33 | 32 | 24 | 15 | 98 | 185 | 37 | 31 | 54 | 106 | 110 | 30 |
| AIA | 10 | 12 | 17 | 32 | 37 | 41 | 28 | 41 | 41 | 20 | 18 | 10 | 12 | 5 | 7 | 8 | 16 | 16 | 17 | 12 | 7 | 8 | 17 | 7 |
| AMS | 10 | 5 | 14 | 8 | 5 | 9 | 12 | 15 | 10 | 4 | 10 | 7 | 7 | 5 | 12 | 10 | 21 | 25 | 17 | 15 | 8 | 6 | 21 | 6 |
| API | 0 | 0 | 0 | 1 | 1 | 0 | 0 | 1 | 0 | 1 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 0 |
| AQU | 6 | 6 | 4 | 4 | 8 | 9 | 10 | 5 | 16 | 9 | 12 | 14 | 10 | 9 | 6 | 6 | 8 | 36 | 12 | 7 | 6 | 5 | 6 | 5 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 3 | 2 | 4 | 4 | 4 | 10 | 5 | 9 | 15 | 8 | 5 | 8 | 3 | 4 | 6 | 5 | 7 | 4 | 3 | 1 | 2 | 4 | 1 |
| ASP | 7 | 8 | 12 | 13 | 7 | 12 | 8 | 11 | 12 | 5 | 19 | 17 | 10 | 6 | 5 | 9 | 17 | 35 | 18 | 7 | 3 | 4 | 13 | 13 |
| BDV | 9 | 9 | 5 | 7 | 8 | 10 | 13 | 6 | 18 | 9 | 14 | 16 | 12 | 9 | 8 | 6 | 10 | 46 | 19 | 8 | 9 | 8 | 11 | 6 |
| BEL | 9 | 10 | 4 | 8 | 7 | 9 | 13 | 6 | 16 | 10 | 16 | 14 | 11 | 8 | 9 | 7 | 14 | 50 | 21 | 10 | 12 | 8 | 12 | 10 |
| BFE | 16 | 15 | 7 | 17 | 11 | 14 | 19 | 11 | 24 | 11 | 16 | 16 | 15 | 12 | 10 | 13 | 16 | 59 | 30 | 10 | 15 | 14 | 21 | 13 |
| BFO | ||||||||||||||||||||||||
| BLC | 34 | 40 | 48 | 113 | 49 | 98 | 24 | 34 | 66 | 59 | 96 | 40 | 63 | 61 | 117 | 63 | 101 | 167 | 174 | 103 | 95 | 56 | 54 | 39 |
| BMT | 2 | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 | 1 | 1 | 0 | 2 | 3 | 2 | 2 | 2 | 0 | 1 | 1 | 2 |
| BNG | 0 | 0 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 0 | 0 | 0 | 0 | 0 |
| BOU | 3 | 10 | 17 | 20 | 21 | 7 | 8 | 17 | 11 | 29 | 9 | 20 | 21 | 24 | 16 | 23 | 32 | 32 | 14 | 16 | 3 | 5 | 15 | 5 |
| BOX | 9 | 14 | 6 | 10 | 13 | 10 | 15 | 13 | 24 | 6 | 10 | 11 | 18 | 6 | 12 | 4 | 21 | 57 | 23 | 13 | 15 | 6 | 13 | 12 |
| BRW | 44 | 52 | 51 | 51 | 126 | 90 | 145 | 62 | 196 | 129 | 253 | 161 | 174 | 97 | 100 | 65 | 237 | 599 | 470 | 213 | 128 | 95 | 52 | 52 |
| BSL | 3 | 7 | 11 | 10 | 15 | 9 | 8 | 9 | 23 | 18 | 4 | 8 | 20 | 18 | 15 | 35 | 26 | 20 | 5 | 13 | 11 | 7 | 19 | 5 |
| CBB | 29 | 53 | 37 | 72 | 44 | 95 | 28 | 29 | 24 | 36 | 69 | 56 | 45 | 43 | 36 | 38 | 131 | 137 | 212 | 195 | 94 | 64 | 91 | 69 |
| CLF | 10 | 6 | 7 | 10 | 11 | 14 | 15 | 7 | 16 | 5 | 16 | 19 | 14 | 16 | 11 | 7 | 11 | 42 | 14 | 6 | 8 | 9 | 11 | 6 |
| CMO | 29 | 18 | 26 | 39 | 56 | 40 | 29 | 65 | 102 | 127 | 139 | 210 | 75 | 46 | 48 | 39 | 226 | 122 | 83 | 58 | 50 | 45 | 22 | 24 |
| CNB | 4 | 12 | 15 | 7 | 4 | 10 | 14 | 16 | 9 | 10 | 22 | 18 | 10 | 10 | 10 | 16 | 14 | 31 | 23 | 12 | 6 | 8 | 11 | 11 |
| CSY | ||||||||||||||||||||||||
| CTA | 3 | 13 | 11 | 9 | 6 | 6 | 14 | 11 | 8 | 5 | 15 | 15 | 8 | 7 | 4 | 10 | 10 | 21 | 16 | 9 | 5 | 10 | 12 | 6 |
| CZT | 9 | 7 | 5 | 37 | 10 | 34 | 22 | 18 | 20 | 8 | 5 | 6 | 8 | 8 | 10 | 10 | 10 | 59 | 30 | 7 | 8 | 12 | 19 | 6 |
| DLR | 2 | 6 | 10 | 9 | 10 | 4 | 4 | 7 | 10 | 13 | 4 | 10 | 17 | 24 | 13 | 27 | 30 | 28 | 5 | 8 | 3 | 4 | 16 | 5 |
| DOU | 12 | 8 | 6 | 11 | 11 | 14 | 16 | 8 | 19 | 6 | 15 | 18 | 16 | 16 | 10 | 8 | 11 | 47 | 17 | 6 | 9 | 11 | 16 | 7 |
| DRV | 58 | 55 | 48 | 44 | 55 | 54 | 89 | 22 | 35 | 52 | 91 | 53 | 34 | 42 | 32 | 27 | 52 | 134 | 76 | 70 | 20 | 57 | 28 | 58 |
| EBR | 1 | 1 | 1 | 1 | 2 | 2 | 2 | 1 | 1 | 1 | 3 | 2 | 1 | 2 | 2 | 1 | 1 | 6 | 2 | 1 | 1 | 1 | 1 | 1 |
| ESK | 16 | 9 | 9 | 16 | 12 | 21 | 17 | 11 | 22 | 9 | 20 | 15 | 19 | 21 | 16 | 9 | 24 | 41 | 23 | 7 | 11 | 14 | 17 | 10 |
| EUA | ||||||||||||||||||||||||
| EYR | 18 | 8 | 7 | 22 | 10 | 12 | 11 | 30 | 9 | 7 | 15 | 21 | 11 | 8 | 17 | 15 | 28 | 30 | 17 | 17 | 9 | 7 | 4 | 9 |
| FCC | 46 | 65 | 89 | 281 | 175 | 92 | 52 | 128 | 186 | 93 | 66 | 37 | 59 | 52 | 41 | 37 | 41 | 108 | 123 | 72 | 39 | 59 | 37 | 20 |
| FRD | 6 | 8 | 12 | 11 | 26 | 13 | 7 | 22 | 36 | 15 | 5 | 10 | 15 | 9 | 15 | 26 | 19 | 19 | 9 | 11 | 11 | 10 | 20 | 6 |
| FRN | 9 | 4 | 8 | 14 | 15 | 4 | 5 | 20 | 4 | 19 | 7 | 18 | 10 | 18 | 14 | 9 | 16 | 26 | 30 | 6 | 5 | 7 | 9 | 6 |
| FUR | 10 | 8 | 5 | 7 | 9 | 12 | 13 | 6 | 18 | 9 | 14 | 15 | 11 | 10 | 6 | 7 | 8 | 48 | 18 | 8 | 9 | 8 | 11 | 6 |
| GCK | ||||||||||||||||||||||||
| GDH | 29 | 27 | 60 | 30 | 37 | 65 | 43 | 41 | 114 | 83 | 78 | 71 | 184 | 116 | 85 | 156 | 85 | 66 | 95 | 108 | 40 | 45 | 51 | 20 |
| GNA | 13 | 9 | 7 | 10 | 10 | 13 | 10 | 6 | 10 | 10 | 31 | 31 | 19 | 8 | 14 | 13 | 52 | 89 | 26 | 12 | 9 | 11 | 18 | 19 |
| GUA | 9 | 1 | 3 | 6 | 7 | 10 | 4 | 2 | 7 | 2 | 2 | 4 | 3 | 2 | 1 | 6 | 7 | 9 | 4 | 7 | 12 | 7 | 9 | 8 |
| GUI | 5 | 2 | 4 | 3 | 11 | 5 | 14 | 8 | 5 | 15 | 20 | 19 | 8 | 6 | 8 | 8 | 11 | 16 | 8 | 4 | 2 | 4 | 4 | 3 |
| GZH | 1 | 2 | 2 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 1 | 1 | 0 | 0 | 1 | 1 |
| HAD | 11 | 5 | 7 | 11 | 12 | 17 | 15 | 9 | 16 | 7 | 19 | 16 | 14 | 19 | 11 | 8 | 16 | 40 | 14 | 4 | 6 | 10 | 12 | 8 |
| HBK | 6 | 3 | 3 | 19 | 8 | 17 | 21 | 6 | 15 | 7 | 4 | 8 | 6 | 3 | 12 | 10 | 8 | 23 | 16 | 3 | 3 | 7 | 9 | 3 |
| HER | 6 | 3 | 4 | 20 | 4 | 16 | 15 | 6 | 8 | 10 | 5 | 12 | 10 | 3 | 10 | 9 | 9 | 24 | 16 | 3 | 3 | 8 | 13 | 3 |
| HLP | 11 | 13 | 4 | 11 | 6 | 15 | 14 | 7 | 23 | 11 | 13 | 13 | 16 | 9 | 9 | 8 | 17 | 46 | 14 | 11 | 18 | 9 | 7 | 10 |
| HON | 8 | 7 | 4 | 2 | 12 | 4 | 4 | 5 | 8 | 6 | 4 | 5 | 5 | 4 | 4 | 5 | 17 | 15 | 9 | 5 | 14 | 19 | 17 | 3 |
| HRB | 8 | 8 | 4 | 6 | 6 | 8 | 12 | 6 | 20 | 6 | 16 | 15 | 11 | 8 | 8 | 7 | 12 | 44 | 19 | 8 | 9 | 7 | 10 | 7 |
| HRN | 51 | 64 | 59 | 35 | 84 | 161 | 141 | 95 | 93 | 97 | 72 | 64 | 93 | 89 | 67 | 52 | 94 | 387 | 105 | 49 | 109 | 35 | 85 | 59 |
| HUA | 5 | 1 | 4 | 5 | 3 | 6 | 6 | 6 | 3 | 5 | 8 | 10 | 14 | 9 | 9 | 9 | 9 | 15 | 9 | 13 | 5 | 7 | 3 | 2 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 88 | 150 | 67 | 108 | 136 | 95 | 68 | 64 | 69 | 111 | 70 | 70 | 159 | 79 | 94 | 68 | 156 | 194 | 225 | 124 | 62 | 58 | 55 | 20 |
| IRT | 4 | 8 | 13 | 18 | 18 | 7 | 13 | 5 | 5 | 16 | 19 | 16 | 10 | 5 | 4 | 17 | 24 | 29 | 22 | 15 | 6 | 7 | 7 | 18 |
| IZN | ||||||||||||||||||||||||
| KAK | 2 | 2 | 2 | 1 | 1 | 2 | 1 | 0 | 0 | 1 | 2 | 1 | 0 | 0 | 0 | 1 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 |
| KDU | 6 | 4 | 11 | 10 | 9 | 10 | 3 | 8 | 8 | 4 | 12 | 12 | 7 | 4 | 3 | 7 | 11 | 23 | 12 | 7 | 3 | 10 | 13 | 15 |
| KMH | ||||||||||||||||||||||||
| KNY | 3 | 2 | 1 | 1 | 0 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| KOU | 6 | 2 | 2 | 5 | 7 | 3 | 6 | 4 | 11 | 7 | 6 | 15 | 8 | 15 | 9 | 14 | 4 | 16 | 20 | 7 | 4 | 8 | 2 | 1 |
| LER | 22 | 12 | 10 | 20 | 11 | 21 | 20 | 9 | 23 | 16 | 18 | 14 | 19 | 22 | 10 | 6 | 28 | 50 | 27 | 7 | 13 | 18 | 27 | 10 |
| LRM | 19 | 7 | 5 | 16 | 9 | 13 | 12 | 7 | 10 | 13 | 25 | 26 | 14 | 6 | 12 | 10 | 37 | 55 | 11 | 12 | 4 | 6 | 13 | 12 |
| LVV | 8 | 9 | 3 | 6 | 5 | 8 | 12 | 8 | 17 | 8 | 15 | 10 | 10 | 7 | 9 | 9 | 16 | 44 | 19 | 9 | 12 | 7 | 10 | 7 |
| LYC | ||||||||||||||||||||||||
| LZH | 5 | 10 | 15 | 21 | 18 | 6 | 7 | 6 | 4 | 16 | 13 | 8 | 8 | 3 | 3 | 10 | 11 | 8 | 13 | 11 | 3 | 4 | 6 | 15 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 3 | 4 | 3 | 9 | 3 | 11 | 7 | 4 | 16 | 17 | 10 | 10 | 7 | 13 | 11 | 11 | 22 | 9 | 3 | 2 | 3 | 3 | 2 |
| MCQ | 16 | 13 | 7 | 23 | 23 | 42 | 21 | 60 | 61 | 92 | 56 | 102 | 39 | 26 | 58 | 118 | 157 | 77 | 82 | 35 | 16 | 21 | 16 | 23 |
| MEA | 8 | 14 | 17 | 50 | 21 | 20 | 22 | 70 | 51 | 65 | 42 | 60 | 33 | 27 | 13 | 18 | 62 | 36 | 56 | 41 | 20 | 18 | 13 | 12 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 3 | 2 | 2 | 2 | 1 | 2 | 1 | 1 | 0 | 1 | 3 | 1 | 1 | 0 | 1 | 2 | 3 | 3 | 2 | 1 | 1 | 1 | 1 | 1 |
| NAQ | 106 | 70 | 34 | 164 | 144 | 250 | 50 | 61 | 33 | 48 | 58 | 40 | 52 | 17 | 13 | 20 | 34 | 113 | 67 | 28 | 14 | 46 | 95 | 13 |
| NCK | 8 | 7 | 4 | 5 | 7 | 9 | 12 | 5 | 18 | 6 | 13 | 14 | 11 | 7 | 7 | 6 | 11 | 40 | 17 | 7 | 9 | 7 | 9 | 6 |
| NEW | 5 | 10 | 15 | 30 | 24 | 10 | 6 | 45 | 13 | 38 | 16 | 35 | 14 | 24 | 8 | 9 | 36 | 25 | 32 | 18 | 8 | 4 | 10 | 6 |
| NGK | 13 | 11 | 6 | 10 | 9 | 12 | 16 | 8 | 19 | 8 | 15 | 16 | 14 | 11 | 7 | 7 | 12 | 55 | 25 | 8 | 13 | 12 | 15 | 8 |
| NUR | 18 | 19 | 5 | 15 | 12 | 11 | 16 | 9 | 22 | 9 | 12 | 11 | 17 | 11 | 10 | 6 | 15 | 64 | 24 | 10 | 18 | 11 | 12 | 12 |
| NVS | 10 | 7 | 7 | 11 | 26 | 13 | 11 | 11 | 11 | 16 | 16 | 16 | 7 | 5 | 9 | 15 | 13 | 23 | 17 | 17 | 11 | 8 | 15 | 17 |
| OTT | 12 | 16 | 20 | 22 | 44 | 28 | 11 | 43 | 59 | 22 | 10 | 16 | 21 | 16 | 23 | 25 | 24 | 31 | 14 | 16 | 11 | 11 | 23 | 8 |
| PAF | 24 | 17 | 10 | 29 | 12 | 22 | 13 | 13 | 16 | 8 | 17 | 8 | 6 | 11 | 17 | 15 | 19 | 78 | 42 | 18 | 8 | 10 | 27 | 11 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 7 | 13 | 19 | 18 | 13 | 2 | 4 | 7 | 7 | 14 | 6 | 5 | 8 | 3 | 2 | 9 | 5 | 7 | 9 | 8 | 2 | 3 | 8 | 15 |
| PPT | 5 | 1 | 2 | 10 | 2 | 6 | 2 | 6 | 4 | 9 | 8 | 6 | 6 | 3 | 5 | 4 | 9 | 12 | 14 | 7 | 3 | 6 | 5 | 11 |
| PST | ||||||||||||||||||||||||
| QSB | 3 | 5 | 5 | 10 | 4 | 4 | 8 | 19 | 19 | 4 | 4 | 4 | 8 | 8 | 6 | 4 | 10 | 22 | 6 | 7 | 6 | 3 | 6 | 4 |
| RES | 21 | 44 | 22 | 55 | 27 | 81 | 36 | 47 | 28 | 34 | 64 | 33 | 51 | 44 | 63 | 69 | 164 | 209 | 193 | 138 | 165 | 99 | 86 | 57 |
| SBA | 22 | 19 | 59 | 30 | 58 | 59 | 56 | 50 | 32 | 77 | 30 | 52 | 57 | 48 | 54 | 31 | 94 | 114 | 160 | 134 | 80 | 89 | 31 | 33 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 9 | 9 | 15 | 38 | 62 | 39 | 14 | 60 | 62 | 34 | 34 | 69 | 18 | 23 | 25 | 16 | 79 | 67 | 42 | 30 | 25 | 17 | 9 | 6 |
| SJG | 5 | 2 | 3 | 3 | 9 | 2 | 5 | 6 | 14 | 5 | 7 | 14 | 15 | 9 | 7 | 15 | 17 | 7 | 12 | 14 | 12 | 7 | 5 | 3 |
| SOD | 79 | 35 | 13 | 13 | 39 | 22 | 30 | 15 | 22 | 23 | 16 | 16 | 26 | 26 | 16 | 11 | 41 | 123 | 38 | 18 | 24 | 55 | 66 | 17 |
| SPT | 7 | 3 | 5 | 5 | 10 | 9 | 13 | 7 | 9 | 8 | 16 | 19 | 10 | 11 | 10 | 6 | 10 | 32 | 8 | 4 | 4 | 6 | 6 | 4 |
| STJ | 18 | 14 | 14 | 19 | 28 | 9 | 10 | 12 | 37 | 16 | 15 | 22 | 22 | 15 | 13 | 19 | 16 | 18 | 28 | 10 | 10 | 12 | 20 | 6 |
| SUA | 6 | 7 | 2 | 4 | 4 | 6 | 8 | 12 | 18 | 4 | 14 | 9 | 8 | 5 | 8 | 9 | 14 | 38 | 12 | 7 | 11 | 5 | 8 | 6 |
| TAM | 4 | 3 | 3 | 3 | 9 | 5 | 11 | 7 | 10 | 14 | 7 | 7 | 8 | 12 | 11 | 6 | 7 | 25 | 8 | 5 | 5 | 3 | 2 | 3 |
| TAN | 3 | 3 | 5 | 18 | 3 | 24 | 15 | 8 | 10 | 2 | 3 | 6 | 4 | 3 | 9 | 5 | 5 | 17 | 11 | 2 | 3 | 4 | 2 | 3 |
| TDC | ||||||||||||||||||||||||
| THL | 15 | 29 | 44 | 38 | 22 | 40 | 40 | 58 | 26 | 35 | 52 | 35 | 62 | 151 | 107 | 47 | 88 | 88 | 146 | 176 | 66 | 72 | 48 | 30 |
| THY | 8 | 8 | 4 | 5 | 6 | 9 | 12 | 6 | 20 | 7 | 14 | 16 | 10 | 8 | 7 | 7 | 12 | 42 | 17 | 8 | 9 | 7 | 8 | 6 |
| TRW | 5 | 4 | 5 | 11 | 12 | 12 | 12 | 14 | 9 | 6 | 11 | 13 | 8 | 6 | 10 | 11 | 21 | 10 | 17 | 11 | 0 | 3 | 8 | 3 |
| TSU | 4 | 3 | 3 | 12 | 5 | 8 | 16 | 8 | 5 | 7 | 6 | 5 | 11 | 6 | 8 | 10 | 5 | 16 | 12 | 4 | 3 | 6 | 9 | 3 |
| TUC | 4 | 4 | 10 | 12 | 12 | 3 | 5 | 12 | 6 | 17 | 5 | 13 | 14 | 22 | 19 | 12 | 22 | 40 | 15 | 9 | 5 | 7 | 14 | 6 |
| UPS | 16 | 18 | 4 | 16 | 7 | 11 | 17 | 8 | 23 | 10 | 12 | 12 | 14 | 11 | 8 | 7 | 16 | 58 | 21 | 9 | 17 | 11 | 12 | 11 |
| VAL | 10 | 4 | 7 | 10 | 14 | 18 | 16 | 9 | 14 | 9 | 19 | 15 | 16 | 19 | 12 | 6 | 20 | 37 | 14 | 5 | 6 | 10 | 12 | 8 |
| VIC | 5 | 9 | 12 | 29 | 22 | 10 | 6 | 46 | 20 | 33 | 15 | 37 | 9 | 22 | 11 | 9 | 34 | 22 | 36 | 14 | 10 | 4 | 5 | 5 |
| VSS | 4 | 3 | 5 | 6 | 5 | 5 | 9 | 8 | 4 | 7 | 11 | 12 | 9 | 4 | 8 | 9 | 13 | 10 | 5 | 2 | 5 | 2 | 5 | 2 |
| WNG | 15 | 12 | 7 | 14 | 10 | 14 | 17 | 9 | 22 | 8 | 13 | 17 | 15 | 13 | 8 | 6 | 13 | 52 | 22 | 8 | 14 | 13 | 16 | 9 |
| YKC | 30 | 30 | 34 | 95 | 250 | 184 | 75 | 151 | 143 | 93 | 88 | 127 | 53 | 39 | 86 | 62 | 77 | 100 | 101 | 93 | 63 | 75 | 42 | 27 |
- Date modified: