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 | 1 | 2 | 5 | 4 | 2 | 8 | 4 | 5 | 12 | 3 | 2 | 5 | 2 | 2 | 3 | 2 | 5 | 2 | 2 | 1 | 1 | 3 | 1 |
| ABG | 7 | 8 | 16 | 14 | 7 | 3 | 5 | 7 | 10 | 7 | 11 | 5 | 3 | 5 | 6 | 8 | 5 | 6 | 4 | 5 | 5 | 3 | 4 | 4 |
| ABK | 116 | 43 | 49 | 25 | 99 | 35 | 37 | 13 | 14 | 7 | 26 | 40 | 32 | 22 | 24 | 28 | 96 | 350 | 61 | 32 | 79 | 97 | 159 | 48 |
| AIA | 4 | 3 | 4 | 22 | 10 | 18 | 9 | 12 | 12 | 8 | 9 | 7 | 4 | 4 | 9 | 5 | 8 | 10 | 15 | 10 | 4 | 2 | 7 | 4 |
| AMS | 4 | 3 | 4 | 2 | 3 | 2 | 7 | 5 | 6 | 6 | 4 | 8 | 4 | 3 | 4 | 3 | 9 | 24 | 18 | 5 | 5 | 9 | 12 | 4 |
| API | 4 | 3 | 2 | 1 | 1 | 4 | 2 | 3 | 4 | 4 | 5 | 3 | 2 | 2 | 3 | 3 | 6 | 5 | 3 | 2 | 4 | 2 | 2 | 2 |
| AQU | 1 | 1 | 1 | 2 | 2 | 3 | 1 | 6 | 7 | 2 | 2 | 2 | 6 | 4 | 7 | 8 | 12 | 5 | 4 | 1 | 2 | 1 | 3 | 1 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 2 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 2 | 2 | 3 | 1 | 2 | 0 | 3 | 2 | 4 | 3 | 1 | 0 | 0 | 1 | 0 |
| ASP | 2 | 5 | 3 | 3 | 3 | 2 | 9 | 5 | 3 | 1 | 3 | 3 | 1 | 1 | 2 | 2 | 5 | 5 | 2 | 2 | 1 | 1 | 2 | 3 |
| BDV | 2 | 1 | 2 | 2 | 4 | 2 | 2 | 1 | 5 | 4 | 8 | 3 | 3 | 9 | 8 | 6 | 15 | 4 | 3 | 5 | 2 | 2 | 3 | 1 |
| BEL | 6 | 2 | 1 | 3 | 4 | 3 | 3 | 8 | 8 | 5 | 8 | 11 | 8 | 11 | 11 | 7 | 18 | 9 | 14 | 3 | 4 | 5 | 9 | 3 |
| BFE | 13 | 5 | 4 | 7 | 5 | 3 | 7 | 5 | 9 | 6 | 9 | 8 | 6 | 13 | 18 | 15 | 24 | 22 | 27 | 11 | 6 | 9 | 21 | 6 |
| BFO | ||||||||||||||||||||||||
| BLC | 36 | 46 | 69 | 197 | 119 | 132 | 21 | 186 | 134 | 62 | 160 | 120 | 110 | 80 | 127 | 187 | 230 | 442 | 360 | 176 | 133 | 149 | 143 | 29 |
| BMT | 4 | 8 | 3 | 1 | 5 | 2 | 2 | 2 | 4 | 2 | 2 | 1 | 1 | 1 | 2 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 1 |
| BNG | 1 | 1 | 1 | 1 | 3 | 12 | 3 | 3 | 3 | 1 | 5 | 7 | 3 | 6 | 2 | 2 | 5 | 5 | 2 | 2 | 1 | 1 | 2 | 2 |
| BOU | 2 | 3 | 2 | 6 | 2 | 2 | 2 | 6 | 1 | 3 | 2 | 3 | 3 | 2 | 3 | 9 | 17 | 3 | 10 | 7 | 3 | 6 | 6 | 3 |
| BOX | 8 | 2 | 4 | 2 | 4 | 3 | 3 | 2 | 1 | 4 | 7 | 12 | 4 | 7 | 9 | 5 | 10 | 26 | 5 | 6 | 5 | 4 | 8 | 6 |
| BRW | 25 | 24 | 13 | 44 | 143 | 42 | 112 | 49 | 60 | 74 | 223 | 129 | 127 | 38 | 31 | 32 | 110 | 289 | 192 | 73 | 53 | 27 | 26 | 22 |
| BSL | 3 | 4 | 6 | 5 | 7 | 4 | 8 | 3 | 3 | 7 | 9 | 4 | 8 | 10 | 15 | 7 | 8 | 9 | 13 | 14 | 4 | 6 | 8 | 4 |
| CBB | 16 | 24 | 37 | 58 | 48 | 45 | 16 | 68 | 39 | 18 | 42 | 46 | 88 | 67 | 45 | 58 | 152 | 373 | 419 | 323 | 189 | 109 | 152 | 70 |
| CLF | 1 | 1 | 1 | 2 | 5 | 1 | 3 | 2 | 7 | 5 | 3 | 6 | 2 | 7 | 9 | 7 | 16 | 9 | 4 | 5 | 3 | 1 | 3 | 1 |
| CMO | 25 | 15 | 16 | 47 | 42 | 69 | 80 | 69 | 189 | 139 | 138 | 245 | 149 | 62 | 97 | 62 | 194 | 78 | 61 | 61 | 29 | 33 | 15 | 19 |
| CNB | 4 | 3 | 4 | 7 | 5 | 4 | 5 | 3 | 5 | 7 | 15 | 13 | 4 | 6 | 3 | 3 | 17 | 16 | 7 | 4 | 2 | 2 | 4 | 5 |
| CSY | ||||||||||||||||||||||||
| CTA | 9 | 2 | 2 | 1 | 2 | 9 | 3 | 1 | 1 | 4 | 1 | 1 | 1 | 1 | 1 | 2 | 1 | 3 | 4 | 1 | 1 | 3 | 3 | 11 |
| CZT | 7 | 3 | 3 | 7 | 4 | 17 | 6 | 7 | 6 | 2 | 7 | 4 | 5 | 3 | 4 | 5 | 4 | 25 | 21 | 8 | 6 | 8 | 8 | 4 |
| DLR | 4 | 4 | 5 | 4 | 5 | 7 | 7 | 7 | 5 | 3 | 5 | 5 | 4 | 3 | 7 | 11 | 16 | 8 | 12 | 12 | 4 | 7 | 6 | 5 |
| DOU | 5 | 3 | 4 | 4 | 7 | 3 | 4 | 3 | 6 | 11 | 3 | 4 | 4 | 11 | 9 | 7 | 15 | 6 | 5 | 6 | 5 | 4 | 3 | 3 |
| DRV | 47 | 87 | 86 | 95 | 99 | 90 | 56 | 44 | 44 | 36 | 113 | 74 | 82 | 64 | 48 | 38 | 140 | 147 | 170 | 57 | 103 | 46 | 51 | 91 |
| EBR | 5 | 6 | 3 | 6 | 6 | 9 | 9 | 7 | 4 | 5 | 8 | 6 | 7 | 6 | 7 | 9 | 13 | 25 | 17 | 7 | 8 | 8 | 11 | 6 |
| ESK | 4 | 3 | 2 | 9 | 10 | 6 | 7 | 3 | 11 | 3 | 5 | 3 | 5 | 7 | 11 | 6 | 16 | 12 | 4 | 10 | 7 | 5 | 5 | 2 |
| EUA | ||||||||||||||||||||||||
| EYR | 2 | 4 | 3 | 5 | 8 | 3 | 3 | 3 | 6 | 5 | 8 | 11 | 5 | 4 | 3 | 6 | 8 | 9 | 8 | 5 | 3 | 4 | 3 | 7 |
| FCC | 54 | 70 | 38 | 431 | 379 | 82 | 60 | 225 | 222 | 136 | 98 | 64 | 144 | 57 | 38 | 33 | 40 | 91 | 86 | 110 | 40 | 56 | 33 | 19 |
| FRD | 1 | 3 | 3 | 5 | 3 | 5 | 3 | 5 | 4 | 6 | 6 | 4 | 4 | 10 | 10 | 4 | 3 | 11 | 11 | 6 | 4 | 6 | 6 | 2 |
| FRN | 0 | 2 | 1 | 2 | 3 | 1 | 2 | 2 | 3 | 3 | 1 | 1 | 2 | 3 | 2 | 2 | 9 | 13 | 3 | 7 | 1 | 1 | 3 | 6 |
| FUR | 1 | 1 | 1 | 2 | 3 | 2 | 2 | 1 | 6 | 6 | 5 | 4 | 2 | 8 | 9 | 6 | 15 | 3 | 3 | 5 | 3 | 1 | 4 | 1 |
| GCK | ||||||||||||||||||||||||
| GDH | 56 | 58 | 29 | 36 | 112 | 138 | 66 | 48 | 193 | 228 | 137 | 97 | 151 | 77 | 59 | 151 | 133 | 125 | 101 | 91 | 48 | 55 | 54 | 31 |
| GNA | 5 | 7 | 8 | 10 | 7 | 7 | 8 | 16 | 15 | 4 | 22 | 22 | 12 | 7 | 7 | 14 | 21 | 56 | 25 | 9 | 7 | 8 | 13 | 13 |
| GUA | 5 | 3 | 1 | 3 | 6 | 2 | 4 | 1 | 2 | 3 | 3 | 4 | 1 | 2 | 2 | 2 | 2 | 4 | 3 | 2 | 3 | 6 | 6 | 8 |
| GUI | 2 | 2 | 2 | 3 | 3 | 2 | 2 | 2 | 5 | 4 | 5 | 5 | 4 | 4 | 6 | 3 | 5 | 6 | 9 | 3 | 1 | 2 | 2 | 2 |
| GZH | 9 | 9 | 7 | 3 | 1 | 9 | 6 | 5 | 4 | 2 | 2 | 1 | 1 | 1 | 2 | 2 | 2 | 2 | 3 | 1 | 1 | 3 | 2 | 6 |
| HAD | 3 | 3 | 2 | 3 | 5 | 3 | 5 | 4 | 7 | 3 | 6 | 5 | 4 | 7 | 11 | 10 | 16 | 20 | 9 | 8 | 7 | 5 | 9 | 4 |
| HBK | 5 | 3 | 8 | 7 | 6 | 7 | 8 | 4 | 5 | 5 | 7 | 9 | 7 | 8 | 5 | 4 | 4 | 5 | 3 | 5 | 3 | 3 | 4 | 3 |
| HER | 2 | 6 | 4 | 17 | 5 | 6 | 10 | 5 | 7 | 10 | 12 | 5 | 7 | 8 | 11 | 6 | 15 | 12 | 14 | 15 | 4 | 4 | 18 | 4 |
| HLP | 6 | 4 | 2 | 5 | 4 | 3 | 4 | 7 | 6 | 3 | 8 | 9 | 9 | 11 | 15 | 10 | 19 | 15 | 15 | 6 | 6 | 5 | 13 | 4 |
| HON | 4 | 2 | 1 | 3 | 4 | 5 | 3 | 3 | 3 | 6 | 3 | 2 | 2 | 1 | 1 | 2 | 6 | 8 | 4 | 5 | 12 | 6 | 4 | 3 |
| HRB | 1 | 1 | 2 | 1 | 3 | 3 | 3 | 4 | 4 | 4 | 7 | 3 | 5 | 6 | 7 | 6 | 15 | 4 | 3 | 4 | 2 | 2 | 3 | 2 |
| HRN | 52 | 54 | 97 | 23 | 118 | 208 | 115 | 59 | 145 | 139 | 64 | 185 | 119 | 152 | 105 | 71 | 87 | 217 | 159 | 76 | 108 | 33 | 190 | 47 |
| HUA | 2 | 2 | 2 | 2 | 1 | 3 | 3 | 4 | 2 | 2 | 2 | 5 | 8 | 10 | 4 | 5 | 7 | 6 | 8 | 3 | 1 | 1 | 2 | 1 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 56 | 78 | 42 | 159 | 104 | 103 | 82 | 70 | 201 | 162 | 87 | 80 | 125 | 48 | 63 | 46 | 140 | 263 | 273 | 180 | 43 | 49 | 96 | 53 |
| IRT | 5 | 3 | 4 | 6 | 2 | 5 | 2 | 4 | 4 | 3 | 4 | 5 | 3 | 1 | 2 | 2 | 4 | 7 | 5 | 2 | 2 | 3 | 3 | 4 |
| IZN | ||||||||||||||||||||||||
| KAK | 3 | 1 | 7 | 4 | 5 | 7 | 9 | 7 | 3 | 6 | 8 | 7 | 5 | 3 | 7 | 7 | 6 | 14 | 8 | 9 | 4 | 7 | 4 | 6 |
| KDU | 9 | 8 | 12 | 4 | 4 | 5 | 5 | 3 | 3 | 5 | 6 | 4 | 2 | 3 | 3 | 3 | 5 | 8 | 5 | 2 | 2 | 3 | 6 | 3 |
| KMH | ||||||||||||||||||||||||
| KNY | 6 | 6 | 2 | 5 | 5 | 15 | 4 | 4 | 2 | 6 | 9 | 6 | 3 | 4 | 6 | 7 | 8 | 10 | 8 | 5 | 5 | 3 | 4 | 5 |
| KOU | 3 | 2 | 4 | 5 | 2 | 5 | 6 | 4 | 4 | 10 | 6 | 6 | 8 | 5 | 8 | 10 | 7 | 14 | 8 | 8 | 8 | 4 | 6 | 2 |
| LER | 7 | 11 | 8 | 25 | 23 | 16 | 20 | 4 | 9 | 5 | 7 | 8 | 9 | 5 | 8 | 10 | 21 | 48 | 11 | 19 | 13 | 15 | 11 | 5 |
| LRM | 11 | 10 | 10 | 19 | 9 | 11 | 7 | 6 | 18 | 15 | 14 | 18 | 8 | 7 | 10 | 9 | 18 | 33 | 10 | 9 | 4 | 5 | 11 | 10 |
| LVV | 7 | 5 | 5 | 8 | 6 | 10 | 5 | 11 | 6 | 8 | 6 | 8 | 9 | 11 | 14 | 12 | 15 | 12 | 13 | 5 | 7 | 7 | 11 | 5 |
| LYC | ||||||||||||||||||||||||
| LZH | 3 | 8 | 10 | 2 | 2 | 3 | 4 | 4 | 5 | 4 | 3 | 2 | 1 | 2 | 3 | 3 | 3 | 5 | 5 | 2 | 1 | 3 | 1 | 3 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 2 | 2 | 2 | 3 | 3 | 4 | 6 | 5 | 5 | 8 | 11 | 5 | 9 | 5 | 9 | 9 | 6 | 12 | 5 | 8 | 1 | 2 | 1 | 1 |
| MCQ | 11 | 17 | 16 | 36 | 25 | 31 | 24 | 75 | 69 | 95 | 268 | 295 | 83 | 43 | 93 | 160 | 186 | 115 | 129 | 37 | 24 | 18 | 19 | 29 |
| MEA | 9 | 13 | 23 | 59 | 43 | 32 | 45 | 135 | 58 | 42 | 77 | 61 | 65 | 19 | 14 | 11 | 29 | 21 | 19 | 22 | 14 | 22 | 15 | 10 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 2 | 5 | 4 | 5 | 2 | 3 | 6 | 2 | 3 | 5 | 3 | 2 | 1 | 2 | 1 | 2 | 6 | 5 | 3 | 3 | 6 | 4 | 4 | 3 |
| NAQ | 163 | 102 | 68 | 127 | 202 | 115 | 138 | 74 | 128 | 90 | 55 | 28 | 39 | 29 | 44 | 24 | 82 | 101 | 49 | 57 | 39 | 55 | 58 | 30 |
| NCK | 1 | 1 | 2 | 1 | 3 | 3 | 2 | 3 | 3 | 3 | 6 | 1 | 4 | 5 | 7 | 6 | 12 | 4 | 3 | 4 | 2 | 1 | 2 | 1 |
| NEW | 1 | 5 | 4 | 9 | 4 | 4 | 5 | 15 | 5 | 8 | 8 | 12 | 9 | 4 | 3 | 2 | 9 | 6 | 2 | 3 | 5 | 5 | 5 | 5 |
| NGK | 4 | 3 | 4 | 4 | 7 | 4 | 6 | 4 | 7 | 9 | 8 | 3 | 8 | 13 | 6 | 6 | 16 | 12 | 8 | 7 | 5 | 5 | 5 | 4 |
| NUR | 14 | 5 | 8 | 9 | 9 | 6 | 6 | 3 | 3 | 3 | 4 | 11 | 8 | 8 | 13 | 7 | 28 | 49 | 16 | 9 | 11 | 9 | 17 | 10 |
| NVS | 7 | 4 | 4 | 4 | 5 | 5 | 8 | 3 | 9 | 6 | 8 | 10 | 7 | 4 | 6 | 5 | 6 | 15 | 6 | 5 | 4 | 4 | 4 | 5 |
| OTT | 3 | 5 | 12 | 20 | 15 | 24 | 5 | 20 | 11 | 20 | 12 | 6 | 7 | 8 | 10 | 10 | 8 | 19 | 18 | 8 | 11 | 13 | 7 | 6 |
| PAF | 10 | 5 | 5 | 8 | 3 | 6 | 9 | 5 | 4 | 4 | 5 | 5 | 5 | 5 | 5 | 4 | 11 | 23 | 18 | 11 | 11 | 14 | 9 | 9 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 9 | 13 | 9 | 9 | 4 | 13 | 7 | 8 | 3 | 6 | 4 | 3 | 2 | 2 | 4 | 6 | 4 | 9 | 8 | 4 | 3 | 4 | 6 | 4 |
| PPT | 2 | 2 | 2 | 5 | 3 | 6 | 4 | 6 | 2 | 2 | 2 | 1 | 4 | 2 | 3 | 3 | 4 | 7 | 4 | 3 | 9 | 2 | 4 | 10 |
| PST | ||||||||||||||||||||||||
| QSB | 1 | 1 | 2 | 2 | 2 | 4 | 10 | 7 | 2 | 2 | 5 | 1 | 6 | 6 | 6 | 3 | 6 | 5 | 5 | 2 | 2 | 2 | 3 | 1 |
| RES | 20 | 30 | 16 | 17 | 13 | 19 | 13 | 23 | 17 | 28 | 20 | 17 | 22 | 86 | 46 | 54 | 63 | 138 | 214 | 330 | 160 | 140 | 89 | 52 |
| SBA | 14 | 13 | 14 | 35 | 33 | 47 | 16 | 16 | 61 | 28 | 36 | 33 | 27 | 35 | 48 | 34 | 25 | 39 | 40 | 51 | 40 | 32 | 17 | 14 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 5 | 9 | 8 | 14 | 42 | 25 | 30 | 20 | 9 | 43 | 38 | 31 | 27 | 11 | 16 | 10 | 25 | 22 | 18 | 11 | 8 | 7 | 5 | 8 |
| SJG | 2 | 2 | 1 | 2 | 5 | 3 | 4 | 5 | 3 | 2 | 2 | 3 | 5 | 2 | 2 | 1 | 4 | 4 | 4 | 8 | 2 | 2 | 1 | 2 |
| SOD | 75 | 37 | 37 | 25 | 27 | 29 | 21 | 7 | 10 | 6 | 21 | 41 | 22 | 10 | 17 | 21 | 49 | 235 | 84 | 85 | 48 | 66 | 112 | 43 |
| SPT | 1 | 1 | 1 | 1 | 1 | 1 | 1 | 4 | 6 | 2 | 3 | 1 | 4 | 1 | 2 | 6 | 12 | 9 | 3 | 3 | 2 | 1 | 2 | 2 |
| STJ | 13 | 15 | 9 | 28 | 27 | 41 | 14 | 9 | 38 | 29 | 18 | 20 | 18 | 14 | 13 | 11 | 12 | 41 | 36 | 18 | 20 | 20 | 18 | 6 |
| SUA | 2 | 2 | 3 | 1 | 4 | 2 | 5 | 10 | 4 | 7 | 5 | 8 | 6 | 8 | 8 | 5 | 9 | 7 | 4 | 3 | 3 | 3 | 2 | 2 |
| TAM | 1 | 0 | 1 | 1 | 1 | 1 | 3 | 4 | 3 | 1 | 4 | 2 | 1 | 3 | 2 | 6 | 4 | 2 | 1 | 1 | 1 | 1 | 2 | 1 |
| TAN | 1 | 1 | 2 | 2 | 1 | 2 | 2 | 3 | 2 | 1 | 2 | 2 | 1 | 1 | 3 | 2 | 2 | 4 | 3 | 1 | 1 | 2 | 1 | 1 |
| TDC | ||||||||||||||||||||||||
| THL | 21 | 23 | 14 | 17 | 23 | 22 | 22 | 25 | 19 | 28 | 21 | 44 | 74 | 117 | 63 | 74 | 54 | 42 | 68 | 67 | 55 | 29 | 54 | 37 |
| THY | 1 | 1 | 2 | 1 | 3 | 3 | 2 | 5 | 4 | 3 | 5 | 2 | 4 | 6 | 7 | 6 | 13 | 3 | 3 | 3 | 2 | 1 | 3 | 1 |
| TRW | 2 | 1 | 2 | 5 | 2 | 2 | 2 | 3 | 2 | 4 | 1 | 2 | 1 | 3 | 8 | 2 | 3 | 8 | 8 | 3 | 0 | 2 | 2 | 2 |
| TSU | 2 | 2 | 1 | 4 | 4 | 1 | 6 | 2 | 10 | 4 | 9 | 3 | 2 | 4 | 6 | 4 | 2 | 4 | 3 | 3 | 2 | 2 | 3 | 2 |
| TUC | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 1 | 1 | 1 | 1 | 2 | 2 | 4 | 1 | 9 | 23 | 3 | 11 | 7 | 1 | 3 | 4 | 3 |
| UPS | 8 | 7 | 6 | 11 | 9 | 5 | 8 | 2 | 4 | 2 | 5 | 7 | 7 | 10 | 10 | 3 | 23 | 26 | 14 | 11 | 13 | 5 | 13 | 7 |
| VAL | 9 | 4 | 5 | 7 | 8 | 6 | 8 | 6 | 12 | 4 | 13 | 7 | 7 | 4 | 16 | 11 | 13 | 31 | 16 | 11 | 8 | 10 | 17 | 5 |
| VIC | 3 | 7 | 3 | 5 | 4 | 4 | 7 | 9 | 7 | 5 | 6 | 13 | 7 | 4 | 3 | 6 | 9 | 14 | 9 | 5 | 5 | 9 | 8 | 9 |
| VSS | 3 | 2 | 2 | 5 | 2 | 3 | 3 | 1 | 3 | 6 | 2 | 10 | 4 | 4 | 6 | 6 | 9 | 8 | 4 | 3 | 3 | 2 | 5 | 1 |
| WNG | 9 | 3 | 2 | 4 | 4 | 1 | 4 | 3 | 6 | 9 | 8 | 3 | 5 | 14 | 13 | 10 | 17 | 21 | 21 | 8 | 5 | 7 | 16 | 2 |
| YKC | 27 | 31 | 87 | 119 | 207 | 109 | 66 | 235 | 172 | 71 | 89 | 185 | 126 | 76 | 134 | 137 | 94 | 122 | 78 | 56 | 20 | 38 | 38 | 32 |
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