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 | 3 | 7 | 6 | 7 | 3 | 8 | 11 | 9 | 8 | 10 | 9 | 7 | 9 | 4 | 13 | 3 | 2 | 4 | 2 | 7 | 6 | 7 |
| ABG | 3 | 12 | 8 | 4 | 3 | |||||||||||||||||||
| ABK | 13 | 25 | 23 | 25 | 29 | 27 | 18 | 26 | 39 | 61 | 29 | 24 | 67 | 140 | 78 | 200 | 130 | 26 | 17 | 15 | 95 | 117 | 101 | 104 |
| AIA | 3 | 4 | 7 | 25 | 19 | 18 | 10 | 15 | 34 | 13 | 20 | 6 | 25 | 31 | 6 | 19 | 8 | 9 | 11 | 9 | 8 | 16 | 10 | 7 |
| AMS | 1 | 5 | 8 | 17 | 7 | 7 | 14 | 28 | 13 | 10 | 16 | 7 | 16 | 21 | 32 | 25 | 19 | 8 | 2 | 3 | 10 | 9 | 17 | 10 |
| API | ||||||||||||||||||||||||
| AQU | 3 | 5 | 8 | 10 | 5 | 6 | 11 | 5 | 5 | 23 | 8 | 18 | 11 | 9 | 12 | 8 | 14 | 7 | 4 | 4 | 16 | 24 | 14 | 11 |
| ARS | ||||||||||||||||||||||||
| ASC | 1 | 3 | 1 | 5 | 2 | 2 | 4 | 9 | 5 | 3 | 3 | 6 | 8 | 4 | 11 | 5 | 6 | 3 | 2 | 4 | 3 | 3 | 4 | 4 |
| ASP | 5 | 10 | 20 | 21 | 12 | 5 | 6 | 4 | 9 | 8 | 10 | 5 | 31 | 12 | 6 | 6 | 20 | 5 | 7 | 6 | 6 | 15 | 24 | 14 |
| BDV | 3 | 8 | 11 | 12 | 7 | 7 | 13 | 7 | 5 | 27 | 5 | 28 | 13 | 8 | 18 | 9 | 21 | 5 | 5 | 4 | 22 | 28 | 19 | 15 |
| BEL | 5 | 10 | 12 | 12 | 7 | 10 | 12 | 11 | 8 | 27 | 8 | 20 | 14 | 10 | 16 | 9 | 18 | 6 | 6 | 5 | 22 | 28 | 22 | 17 |
| BFE | 5 | 12 | 17 | 17 | 14 | 12 | 12 | 10 | 10 | 28 | 8 | 27 | 17 | 19 | 25 | 21 | 31 | 7 | 6 | 5 | 36 | 29 | 30 | 21 |
| BFO | ||||||||||||||||||||||||
| BLC | 14 | 41 | 43 | 29 | 23 | 35 | 23 | 43 | 111 | 82 | 100 | 67 | 135 | 84 | 96 | 61 | 147 | 124 | 74 | 81 | 115 | 112 | 68 | 43 |
| BMT | 1 | 1 | 2 | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 4 | 3 | 1 | 1 | 1 | 0 | 1 | 1 | 1 | 2 | 2 | 2 |
| BNG | 0 | 0 | 0 | 0 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 0 | 1 | 0 | 0 | 0 | 0 | 0 | 0 | 1 |
| BOU | 10 | 14 | 12 | 15 | 6 | 25 | 7 | 3 | 37 | 63 | 11 | 6 | 54 | 29 | 17 | 19 | 17 | 11 | 15 | 9 | 6 | 8 | 11 | 11 |
| BOX | 6 | 9 | 12 | 9 | 9 | 12 | 6 | 19 | 14 | 26 | 10 | 8 | 20 | 23 | 16 | 33 | 27 | 7 | 7 | 3 | 10 | 46 | 21 | 20 |
| BRW | 21 | 52 | 61 | 71 | 42 | 56 | 36 | 15 | 138 | 211 | 170 | 45 | 321 | 301 | 284 | 180 | 137 | 78 | 77 | 74 | 69 | 134 | 99 | 98 |
| BSL | 2 | 6 | 6 | 11 | 3 | 8 | 8 | 4 | 45 | 54 | 8 | 15 | 36 | 12 | 10 | 14 | 12 | 3 | 12 | 7 | 6 | 12 | 10 | 5 |
| CBB | 29 | 71 | 81 | 52 | 29 | 27 | 21 | 25 | 61 | 60 | 37 | 32 | 137 | 90 | 75 | 69 | 70 | 161 | 109 | 106 | 153 | 114 | 68 | 59 |
| CLF | 4 | 8 | 13 | 15 | 9 | 8 | 13 | 10 | 15 | 22 | 8 | 32 | 19 | 17 | 22 | 18 | 25 | 9 | 5 | 5 | 25 | 30 | 17 | 14 |
| CMO | 6 | 16 | 20 | 24 | 9 | 34 | 38 | 13 | 228 | 276 | 95 | 29 | 284 | 289 | 259 | 385 | 218 | 51 | 27 | 28 | 35 | 73 | 44 | 20 |
| CNB | 9 | 18 | 13 | 26 | 14 | 11 | 13 | 3 | 24 | 19 | 6 | 5 | 28 | 37 | 16 | 8 | 17 | 6 | 10 | 7 | 13 | 16 | 19 | 10 |
| CSY | ||||||||||||||||||||||||
| CTA | 14 | 14 | 8 | 18 | 13 | 7 | 9 | 3 | 13 | 8 | 8 | 4 | 18 | 13 | 5 | 6 | 15 | 4 | 7 | 6 | 8 | 8 | 20 | 5 |
| CZT | 2 | 3 | 10 | 4 | 12 | 9 | 6 | 13 | 32 | 26 | 12 | 7 | 19 | 12 | 24 | 16 | 41 | 2 | 3 | 2 | 21 | 24 | 16 | 15 |
| DLR | 7 | 8 | 7 | 9 | 3 | 9 | 2 | 4 | 20 | 31 | 7 | 3 | 25 | 13 | 13 | 11 | 11 | 4 | 5 | 5 | 10 | 9 | 9 | 7 |
| DOU | 4 | 9 | 13 | 16 | 11 | 8 | 13 | 11 | 14 | 24 | 7 | 33 | 19 | 17 | 23 | 19 | 30 | 9 | 4 | 6 | 27 | 31 | 19 | 16 |
| DRV | 58 | 77 | 53 | 83 | 53 | 47 | 22 | 64 | 62 | 58 | 58 | 43 | 121 | 81 | 72 | 30 | 21 | 19 | 9 | 17 | 46 | 49 | 62 | 107 |
| EBR | 0 | 1 | 1 | 2 | 1 | 1 | 1 | 2 | 1 | 2 | 1 | 4 | 3 | 1 | 2 | 2 | 4 | 1 | 1 | 1 | 3 | 3 | 2 | 1 |
| ESK | 5 | 11 | 19 | 18 | 12 | 14 | 11 | 14 | 25 | 29 | 13 | 32 | 23 | 32 | 27 | 32 | 38 | 15 | 7 | 5 | 31 | 42 | 21 | 18 |
| EUA | ||||||||||||||||||||||||
| EYR | 17 | 19 | 10 | 17 | 10 | 12 | 5 | 4 | 62 | 34 | 24 | 8 | 17 | 39 | 35 | 14 | 11 | 4 | 6 | 8 | 11 | 10 | 6 | 16 |
| FCC | 6 | 12 | 16 | 58 | 42 | 127 | 19 | 22 | 37 | 196 | 217 | 40 | 94 | 335 | 347 | 97 | 77 | 54 | 62 | 41 | 73 | 81 | 34 | 41 |
| FRD | 3 | 6 | 3 | 11 | 5 | 18 | 13 | 4 | 50 | 59 | 16 | 17 | 33 | 25 | 9 | 8 | 16 | 3 | 5 | 4 | 7 | 17 | 10 | 10 |
| FRN | 4 | 7 | 4 | 12 | 6 | 19 | 13 | 3 | 13 | 18 | 15 | 7 | 34 | 27 | 12 | 22 | 17 | 8 | 10 | 12 | 15 | 14 | 8 | 14 |
| FUR | 3 | 7 | 11 | 13 | 7 | 7 | 13 | 7 | 6 | 25 | 6 | 30 | 15 | 10 | 18 | 12 | 22 | 6 | 5 | 5 | 24 | 28 | 18 | 15 |
| GCK | ||||||||||||||||||||||||
| GDH | 44 | 21 | 38 | 25 | 39 | 39 | 27 | 42 | 85 | 40 | 73 | 95 | 192 | 118 | 188 | 84 | 171 | 102 | 57 | 54 | 42 | 89 | 69 | 81 |
| GNA | 14 | 13 | 17 | 17 | 22 | 11 | 4 | 15 | 12 | 16 | 17 | 6 | 73 | 51 | 17 | 12 | 41 | 10 | 11 | 13 | 11 | 23 | 33 | 14 |
| GUA | 3 | 9 | 3 | 9 | 5 | 15 | 10 | 8 | 7 | 4 | 2 | 0 | 3 | 8 | 4 | 2 | 5 | 1 | 3 | 3 | 6 | 4 | 9 | 12 |
| GUI | 2 | 3 | 6 | 11 | 4 | 5 | 6 | 14 | 8 | 16 | 7 | 17 | 16 | 10 | 17 | 4 | 14 | 4 | 7 | 6 | 10 | 15 | 5 | 6 |
| GZH | 0 | 1 | 2 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 0 | 0 | 2 | 1 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 1 | 1 | 1 |
| HAD | 3 | 8 | 14 | 16 | 7 | 9 | 9 | 12 | 16 | 21 | 12 | 30 | 22 | 26 | 21 | 20 | 31 | 9 | 6 | 5 | 25 | 34 | 16 | 14 |
| HBK | 2 | 3 | 5 | 3 | 4 | 7 | 13 | 15 | 29 | 27 | 4 | 14 | 15 | 10 | 19 | 2 | 19 | 5 | 3 | 2 | 6 | 13 | 9 | 6 |
| HER | 2 | 3 | 4 | 3 | 6 | 7 | 7 | 23 | 13 | 23 | 12 | 17 | 16 | 12 | 17 | 4 | 22 | 5 | 4 | 3 | 6 | 16 | 10 | 4 |
| HLP | 6 | 12 | 13 | 13 | 8 | 10 | 13 | 12 | 12 | 32 | 6 | 23 | 23 | 15 | 16 | 12 | 20 | 10 | 6 | 4 | 29 | 30 | 20 | 23 |
| HON | 2 | 3 | 5 | 13 | 4 | 2 | 15 | 9 | 8 | 4 | 22 | 22 | 2 | 7 | ||||||||||
| HRB | 3 | 8 | 10 | 12 | 6 | 9 | 12 | 9 | 7 | 29 | 6 | 19 | 13 | 9 | 16 | 6 | 15 | 6 | 5 | 4 | 20 | 26 | 18 | 15 |
| HRN | 30 | 63 | 65 | 82 | 83 | 79 | 33 | 125 | 105 | 209 | 150 | 50 | 122 | 86 | 62 | 58 | 66 | 52 | 25 | 20 | 70 | 178 | 141 | 75 |
| HUA | 1 | 3 | 2 | 4 | 3 | 3 | 4 | 6 | 4 | 5 | 5 | 13 | 12 | 12 | 7 | 8 | 15 | 6 | 6 | 5 | 5 | 5 | 4 | 4 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 21 | 54 | 66 | 64 | 46 | 75 | 24 | 49 | 79 | 155 | 137 | 121 | 113 | 170 | 179 | 78 | 189 | 92 | 105 | 51 | 110 | 107 | 70 | 72 |
| IRT | 4 | 12 | 18 | 10 | 18 | 16 | 10 | 4 | 7 | 15 | 11 | 12 | 48 | 34 | 20 | 5 | 17 | 3 | 5 | 6 | 13 | 30 | 17 | 14 |
| IZN | ||||||||||||||||||||||||
| KAK | 1 | 2 | 2 | 1 | 0 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 3 | 2 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 2 | 1 |
| KDU | 5 | 13 | 23 | 18 | 9 | 5 | 2 | 4 | 7 | 6 | 8 | 4 | 18 | 9 | 3 | 5 | 14 | 3 | 6 | 5 | 5 | 10 | 24 | 12 |
| KMH | ||||||||||||||||||||||||
| KNY | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 0 | 1 | 3 | 2 | 1 | 1 | 1 | 0 | 0 | 1 | 1 | 1 | 2 | 2 |
| KOU | 0 | 22 | 9 | 13 | 8 | 7 | 10 | 10 | 3 | 4 | ||||||||||||||
| LER | 5 | 10 | 21 | 16 | 14 | 14 | 10 | 15 | 27 | 38 | 14 | 22 | 22 | 34 | 27 | 42 | 51 | 14 | 6 | 4 | 36 | 50 | 24 | 23 |
| LRM | 15 | 14 | 14 | 23 | 18 | 7 | 4 | 18 | 12 | 21 | 13 | 5 | 42 | 36 | 23 | 11 | 25 | 5 | 7 | 9 | 8 | 13 | 21 | 16 |
| LVV | 4 | 7 | 11 | 11 | 8 | 10 | 10 | 13 | 12 | 24 | 3 | 16 | 11 | 9 | 14 | 11 | 10 | 6 | 5 | 4 | 19 | 25 | 18 | 15 |
| LYC | ||||||||||||||||||||||||
| LZH | 9 | 9 | 17 | 13 | 20 | 9 | 11 | 4 | 9 | 13 | 7 | 8 | 28 | 16 | 12 | 5 | 8 | 2 | 4 | 6 | 10 | 16 | 11 | 16 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 3 | 4 | 9 | 3 | 5 | 4 | 10 | 5 | 13 | 6 | 14 | 15 | 5 | 23 | 7 | 19 | 5 | 3 | 2 | 10 | 10 | 2 | 5 |
| MCQ | 17 | 21 | 15 | 40 | 26 | 14 | 13 | 16 | 92 | 175 | 47 | 29 | 263 | 256 | 203 | 156 | 129 | 31 | 28 | 15 | 19 | 29 | 22 | 13 |
| MEA | 6 | 17 | 11 | 19 | 16 | 73 | 38 | 13 | 100 | 219 | 42 | 21 | 145 | 88 | 76 | 36 | 55 | 37 | 21 | 17 | 27 | 49 | 34 | 17 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 2 | 2 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 5 | 3 | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 2 | 2 | 1 |
| NAQ | 11 | 55 | 40 | 50 | 49 | 51 | 16 | 25 | 30 | 80 | 30 | 41 | 46 | 61 | 65 | 47 | 47 | 52 | 24 | 21 | 40 | 71 | 43 | 126 |
| NCK | 3 | 8 | 10 | 11 | 6 | 7 | 12 | 7 | 6 | 26 | 5 | 21 | 14 | 9 | 14 | 6 | 14 | 6 | 5 | 4 | 19 | 25 | 17 | 14 |
| NEW | ||||||||||||||||||||||||
| NGK | 4 | 10 | 15 | 16 | 10 | 8 | 14 | 8 | 8 | 29 | 5 | 32 | 15 | 14 | 21 | 15 | 26 | 6 | 5 | 5 | 31 | 29 | 22 | 18 |
| NUR | 6 | 12 | 15 | 15 | 10 | 12 | 11 | 10 | 9 | 37 | 9 | 19 | 23 | 21 | 21 | 20 | 39 | 8 | 6 | 3 | 24 | 37 | 37 | 24 |
| NVS | 6 | 15 | 11 | 13 | 16 | 19 | 12 | 18 | 7 | 14 | 12 | 15 | 33 | 30 | 18 | 11 | 29 | 9 | 6 | 8 | 18 | 41 | 18 | 11 |
| OTT | 3 | 6 | 5 | 20 | 10 | 36 | 20 | 8 | 74 | 89 | 15 | 17 | 43 | 39 | 13 | 17 | 24 | 7 | 5 | 9 | 10 | 23 | 12 | 15 |
| PAF | 3 | 6 | 15 | 12 | 10 | 14 | 8 | 21 | 21 | 25 | 20 | 10 | 29 | 57 | 48 | 54 | 26 | 12 | 4 | 3 | 4 | 23 | 14 | 12 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 6 | 7 | 13 | 13 | 11 | 5 | 4 | 2 | 5 | 14 | 2 | 4 | 14 | 12 | 7 | 4 | 5 | 3 | 4 | 5 | 7 | 9 | 7 | 14 |
| PPT | 7 | 3 | 4 | 4 | 4 | 6 | 1 | 2 | 9 | 6 | 7 | 4 | 5 | 4 | 10 | 4 | 5 | 18 | 11 | 7 | 10 | 13 | 18 | 9 |
| PST | ||||||||||||||||||||||||
| QSB | 3 | 5 | 4 | 6 | 8 | 8 | 2 | 23 | 14 | 11 | 8 | 6 | 10 | 9 | 5 | 9 | 15 | 5 | 4 | 4 | 5 | 16 | 10 | 12 |
| RES | 18 | 50 | 75 | 57 | 46 | 28 | 14 | 45 | 82 | 59 | 57 | 51 | 126 | 72 | 53 | 70 | 233 | 226 | 225 | 197 | 106 | 106 | 50 | 79 |
| SBA | 44 | 44 | 46 | 39 | 51 | 56 | 27 | 45 | 97 | 84 | 68 | 76 | 39 | 113 | 87 | 58 | 49 | 40 | 67 | 91 | 98 | 86 | 95 | 85 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 3 | 6 | 4 | 16 | 9 | 39 | 37 | 3 | 182 | 119 | 78 | 10 | 123 | 197 | 46 | 30 | 28 | 19 | 19 | 20 | 25 | 56 | 25 | 13 |
| SJG | 1 | 3 | 1 | 2 | 2 | 7 | 7 | 2 | 15 | 13 | 9 | 13 | 10 | 9 | 6 | 16 | 12 | 7 | 3 | 5 | 11 | 7 | 5 | 5 |
| SOD | 10 | 16 | 18 | 16 | 15 | 16 | 13 | 17 | 23 | 48 | 26 | 21 | 54 | 87 | 49 | 88 | 139 | 15 | 12 | 8 | 94 | 133 | 92 | 53 |
| SPT | 2 | 5 | 9 | 12 | 4 | 4 | 11 | 11 | 9 | 17 | 6 | 24 | 15 | 12 | 16 | 13 | 20 | 3 | 8 | 4 | 16 | 22 | 9 | 8 |
| STJ | 3 | 6 | 8 | 15 | 6 | 23 | 17 | 8 | 20 | 29 | 24 | 23 | 15 | 42 | 16 | 9 | 14 | 16 | 11 | 8 | 9 | 23 | 10 | 14 |
| SUA | ||||||||||||||||||||||||
| TAM | 2 | 4 | 5 | 9 | 4 | 8 | 9 | 5 | 6 | 18 | 6 | 9 | 11 | 8 | 7 | 6 | 11 | 3 | 3 | 2 | 11 | 13 | 7 | 8 |
| TAN | ||||||||||||||||||||||||
| TDC | ||||||||||||||||||||||||
| THL | 18 | 51 | 69 | 58 | 52 | 43 | 40 | 54 | 96 | 72 | 86 | 45 | 152 | 67 | 46 | 59 | 236 | 122 | 75 | 40 | 42 | 27 | 69 | 78 |
| THY | 3 | 8 | 10 | 11 | 6 | 8 | 12 | 8 | 7 | 30 | 5 | 19 | 14 | 10 | 15 | 6 | 14 | 6 | 5 | 4 | 19 | 27 | 18 | 15 |
| TRW | 1 | 2 | 2 | 9 | 6 | 6 | 5 | 7 | 15 | 10 | 6 | 10 | 10 | 10 | 9 | 12 | 17 | 3 | 6 | 6 | 7 | 9 | 3 | 4 |
| TSU | 2 | 3 | 3 | 4 | 3 | 6 | 12 | 24 | 17 | 24 | 11 | 9 | 16 | 9 | 10 | 5 | 18 | 5 | 2 | 3 | 3 | 9 | 8 | 6 |
| TUC | 8 | 11 | 8 | 11 | 4 | 16 | 7 | 3 | 11 | 29 | 8 | 6 | 30 | 20 | 14 | 18 | 12 | 9 | 11 | 5 | 12 | 8 | 9 | 11 |
| UPS | 6 | 12 | 15 | 15 | 12 | 11 | 12 | 9 | 10 | 35 | 8 | 23 | 19 | 19 | 25 | 23 | 41 | 8 | 4 | 3 | 33 | 35 | 36 | 25 |
| VAL | 3 | 7 | 15 | 15 | 6 | 10 | 9 | 12 | 18 | 25 | 16 | 22 | 20 | 33 | 19 | 20 | 32 | 9 | 6 | 5 | 24 | 35 | 15 | 12 |
| VIC | 5 | 9 | 3 | 16 | 9 | 34 | 28 | 4 | 53 | 27 | 37 | 8 | 61 | 52 | 22 | 23 | 19 | 18 | 14 | 13 | 17 | 26 | 9 | 12 |
| VSS | 1 | 2 | 2 | 6 | 3 | 5 | 4 | 4 | 7 | 3 | 12 | 4 | 9 | 11 | 18 | 7 | 6 | 4 | 6 | 4 | 3 | 6 | 4 | 4 |
| WNG | 4 | 11 | 16 | 17 | 13 | 10 | 13 | 9 | 14 | 28 | 6 | 27 | 17 | 18 | 22 | 20 | 30 | 9 | 5 | 5 | 33 | 31 | 25 | 20 |
| YKC | 7 | 23 | 33 | 25 | 39 | 172 | 82 | 36 | 344 | 310 | 139 | 28 | 88 | 679 | 430 | 330 | 188 | 90 | 53 | 54 | 103 | 63 | 80 | 54 |
- Date modified: