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 | 3 | 10 | 4 | 7 | 26 | 46 | 21 | 15 | 22 | 25 | 7 | 20 | 16 | 20 | 12 | 9 | 10 | 24 | 9 | 9 | 3 | 27 | 11 |
| ABG | 7 | 9 | 10 | 9 | 14 | 13 | 10 | 12 | 11 | 7 | 10 | 6 | 11 | 7 | 15 | 11 | 11 | 13 | 12 | 5 | 8 | 9 | 18 | 10 |
| ABK | 137 | 74 | 66 | 39 | 41 | 65 | 42 | 19 | 17 | 20 | 15 | 15 | 38 | 38 | 52 | 48 | 41 | 42 | 414 | 41 | 70 | 44 | 211 | 85 |
| AIA | 4 | 4 | 24 | 18 | 12 | 11 | 19 | 17 | 19 | 5 | 10 | 9 | 10 | 5 | 21 | 7 | 20 | 4 | 13 | 8 | 7 | 6 | 15 | 8 |
| AMS | 6 | 6 | 6 | 5 | 3 | 13 | 6 | 7 | 7 | 6 | 6 | 10 | 7 | 12 | 8 | 13 | 8 | 10 | 16 | 7 | 5 | 5 | 9 | 3 |
| API | 4 | 5 | 12 | 13 | 4 | 20 | 12 | 22 | 6 | 5 | 7 | 4 | 2 | 6 | 6 | 6 | 9 | 3 | 4 | 7 | 3 | 10 | 5 | 3 |
| AQU | 4 | 4 | 6 | 2 | 5 | 14 | 7 | 12 | 4 | 3 | 9 | 11 | 6 | 6 | 8 | 7 | 8 | 5 | 22 | 6 | 4 | 3 | 12 | 11 |
| ARS | ||||||||||||||||||||||||
| ASC | 2 | 5 | 4 | 4 | 3 | 6 | 5 | 7 | 8 | 6 | 2 | 8 | 7 | 6 | 16 | 13 | 5 | 4 | 12 | 7 | 5 | 3 | 12 | 8 |
| ASP | 5 | 9 | 9 | 4 | 3 | 10 | 8 | 12 | 4 | 4 | 3 | 5 | 9 | 5 | 5 | 5 | 5 | 3 | 3 | 3 | 2 | 4 | 2 | 4 |
| BDV | 4 | 2 | 5 | 1 | 3 | 9 | 4 | 13 | 2 | 2 | 11 | 7 | 6 | 12 | 8 | 6 | 8 | 2 | 15 | 4 | 3 | 2 | 5 | 7 |
| BEL | 6 | 4 | 11 | 6 | 5 | 12 | 3 | 13 | 5 | 6 | 12 | 17 | 7 | 15 | 14 | 5 | 12 | 4 | 32 | 9 | 7 | 5 | 10 | 9 |
| BFE | 11 | 8 | 20 | 10 | 8 | 11 | 5 | 9 | 6 | 7 | 12 | 16 | 10 | 30 | 25 | 9 | 21 | 7 | 76 | 22 | 9 | 13 | 20 | 18 |
| BFO | ||||||||||||||||||||||||
| BLC | 53 | 79 | 287 | 238 | 67 | 267 | 218 | 35 | 178 | 75 | 76 | 46 | 83 | 108 | 123 | 243 | 142 | 101 | 246 | 95 | 110 | 150 | 209 | 73 |
| BMT | 8 | 7 | 12 | 3 | 9 | 10 | 12 | 11 | 3 | 4 | 8 | 6 | 7 | 7 | 2 | 7 | 3 | 7 | 6 | 3 | 2 | 3 | 3 | 4 |
| BNG | 5 | 5 | 4 | 5 | 6 | 9 | 17 | 4 | 14 | 9 | 15 | 2 | 13 | 16 | 22 | 9 | 9 | 7 | 21 | 12 | 9 | 4 | 26 | 14 |
| BOU | 11 | 5 | 10 | 11 | 5 | 8 | 9 | 11 | 4 | 4 | 4 | 4 | 4 | 4 | 10 | 8 | 8 | 3 | 6 | 5 | 4 | 14 | 10 | 3 |
| BOX | 14 | 7 | 11 | 5 | 3 | 6 | 5 | 10 | 5 | 10 | 12 | 14 | 14 | 25 | 21 | 9 | 8 | 7 | 39 | 13 | 6 | 9 | 17 | 13 |
| BRW | 26 | 28 | 148 | 107 | 60 | 270 | 120 | 217 | 201 | 105 | 134 | 316 | 128 | 89 | 199 | 191 | 207 | 244 | 107 | 69 | 74 | 36 | 56 | 49 |
| BSL | 6 | 6 | 15 | 9 | 12 | 18 | 7 | 9 | 8 | 5 | 5 | 6 | 12 | 9 | 8 | 9 | 13 | 7 | 7 | 9 | 6 | 13 | 8 | 6 |
| CBB | 40 | 36 | 130 | 71 | 14 | 166 | 198 | 85 | 62 | 55 | 27 | 36 | 22 | 94 | 72 | 71 | 142 | 140 | 366 | 172 | 179 | 80 | 123 | 66 |
| CLF | 4 | 4 | 5 | 3 | 5 | 11 | 9 | 14 | 3 | 3 | 8 | 5 | 5 | 12 | 6 | 12 | 10 | 5 | 22 | 7 | 4 | 3 | 9 | 11 |
| CMO | 32 | 5 | 98 | 52 | 23 | 276 | 155 | 339 | 229 | 18 | 161 | 67 | 65 | 72 | 142 | 87 | 103 | 85 | 62 | 21 | 15 | 34 | 45 | 35 |
| CNB | 3 | 2 | 3 | 11 | 7 | 13 | 9 | 12 | 7 | 3 | 5 | 5 | 8 | 7 | 4 | 7 | 4 | 4 | 3 | 3 | 3 | 3 | 4 | 3 |
| CSY | ||||||||||||||||||||||||
| CTA | 5 | 5 | 12 | 4 | 5 | 8 | 6 | 16 | 7 | 6 | 3 | 5 | 8 | 3 | 5 | 6 | 9 | 4 | 4 | 6 | 4 | 6 | 8 | 3 |
| CZT | 3 | 3 | 6 | 4 | 3 | 4 | 6 | 4 | 3 | 7 | 3 | 8 | 5 | 7 | 6 | 4 | 5 | 3 | 15 | 2 | 4 | 4 | 3 | 5 |
| DLR | 8 | 5 | 17 | 14 | 10 | 24 | 9 | 12 | 6 | 7 | 5 | 5 | 9 | 10 | 13 | 5 | 16 | 4 | 7 | 9 | 6 | 9 | 9 | 3 |
| DOU | 4 | 5 | 5 | 6 | 5 | 11 | 9 | 16 | 5 | 3 | 11 | 5 | 6 | 16 | 8 | 11 | 12 | 6 | 23 | 11 | 3 | 3 | 7 | 11 |
| DRV | 74 | 122 | 95 | 112 | 76 | 94 | 72 | 61 | 50 | 52 | 42 | 35 | 46 | 53 | 81 | 106 | 81 | 43 | 44 | 41 | 61 | 34 | 75 | 68 |
| EBR | 8 | 8 | 11 | 4 | 10 | 20 | 17 | 18 | 9 | 8 | 10 | 15 | 7 | 10 | 12 | 12 | 16 | 12 | 37 | 10 | 9 | 6 | 24 | 21 |
| ESK | 4 | 4 | 13 | 7 | 7 | 7 | 5 | 3 | 6 | 11 | 6 | 5 | 4 | 19 | 18 | 12 | 14 | 5 | 28 | 5 | 7 | 5 | 16 | 10 |
| EUA | ||||||||||||||||||||||||
| EYR | 6 | 6 | 11 | 14 | 5 | 27 | 9 | 26 | 9 | 5 | 4 | 7 | 4 | 5 | 5 | 6 | 6 | 5 | 4 | 5 | 5 | 3 | 8 | 5 |
| FCC | 109 | 137 | 356 | 185 | 157 | 384 | 163 | 157 | 198 | 65 | 90 | 123 | 81 | 62 | 51 | 59 | 36 | 68 | 64 | 35 | 34 | 27 | 66 | 51 |
| FRD | 5 | 2 | 5 | 5 | 5 | 2 | 6 | 6 | 6 | 3 | 3 | 3 | 6 | 8 | 6 | 7 | 15 | 4 | 9 | 6 | 9 | 11 | 6 | 6 |
| FRN | 2 | 4 | 11 | 14 | 5 | 19 | 12 | 12 | 5 | 5 | 4 | 3 | 4 | 3 | 10 | 8 | 6 | 7 | 7 | 6 | 5 | 12 | 5 | 13 |
| FUR | 4 | 3 | 6 | 1 | 3 | 10 | 5 | 14 | 2 | 2 | 10 | 8 | 4 | 11 | 5 | 7 | 8 | 3 | 16 | 4 | 4 | 2 | 7 | 8 |
| GCK | ||||||||||||||||||||||||
| GDH | 74 | 100 | 174 | 130 | 98 | 99 | 118 | 126 | 116 | 160 | 183 | 96 | 109 | 81 | 126 | 150 | 142 | 83 | 63 | 50 | 85 | 45 | 192 | 100 |
| GNA | 7 | 8 | 15 | 16 | 6 | 15 | 11 | 30 | 10 | 11 | 11 | 3 | 8 | 13 | 12 | 6 | 17 | 14 | 9 | 16 | 8 | 9 | 10 | 12 |
| GUA | 9 | 6 | 19 | 16 | 8 | 6 | 10 | 15 | 5 | 6 | 4 | 7 | 8 | 4 | 5 | 6 | 8 | 3 | 5 | 5 | 3 | 8 | 10 | 17 |
| GUI | 4 | 7 | 4 | 5 | 6 | 13 | 12 | 14 | 12 | 6 | 5 | 9 | 4 | 6 | 14 | 5 | 6 | 4 | 11 | 11 | 7 | 5 | 14 | 11 |
| GZH | 5 | 4 | 7 | 3 | 10 | 7 | 6 | 10 | 4 | 10 | 8 | 8 | 9 | 5 | 3 | 11 | 4 | 8 | 5 | 3 | 2 | 4 | 5 | 3 |
| HAD | 5 | 5 | 11 | 3 | 8 | 10 | 10 | 9 | 4 | 8 | 8 | 5 | 5 | 17 | 12 | 15 | 14 | 9 | 30 | 5 | 9 | 4 | 13 | 13 |
| HBK | 4 | 6 | 4 | 5 | 4 | 5 | 4 | 9 | 6 | 8 | 6 | 5 | 4 | 6 | 4 | 4 | 6 | 4 | 10 | 4 | 4 | 3 | 11 | 6 |
| HER | 2 | 6 | 3 | 7 | 3 | 6 | 7 | 14 | 10 | 12 | 3 | 7 | 5 | 5 | 12 | 6 | 6 | 2 | 15 | 7 | 5 | 4 | 10 | 14 |
| HLP | 8 | 4 | 14 | 5 | 5 | 10 | 4 | 10 | 5 | 6 | 13 | 18 | 11 | 23 | 18 | 5 | 17 | 6 | 52 | 14 | 7 | 9 | 13 | 11 |
| HON | 4 | 4 | 6 | 10 | 4 | 24 | 12 | 21 | 6 | 5 | 7 | 3 | 2 | 4 | 6 | 8 | 4 | 4 | 5 | 4 | 6 | 4 | 11 | 4 |
| HRB | 4 | 3 | 6 | 3 | 3 | 10 | 5 | 13 | 3 | 3 | 11 | 9 | 4 | 12 | 6 | 6 | 7 | 2 | 14 | 2 | 4 | 3 | 7 | 8 |
| HRN | 40 | 30 | 63 | 72 | 118 | 168 | 159 | 126 | 96 | 68 | 138 | 70 | 174 | 139 | 80 | 92 | 32 | 130 | 223 | 157 | 52 | 35 | 222 | 295 |
| HUA | 5 | 6 | 16 | 8 | 19 | 28 | 9 | 8 | 12 | 4 | 5 | 10 | 17 | 57 | 29 | 23 | 56 | 16 | 24 | 28 | 27 | 9 | 9 | 8 |
| HYB | ||||||||||||||||||||||||
| IPM | ||||||||||||||||||||||||
| IQA | 119 | 123 | 211 | 207 | 116 | 78 | 89 | 92 | 118 | 71 | 76 | 122 | 79 | 77 | 71 | 149 | 141 | 114 | 264 | 110 | 39 | 74 | 393 | 141 |
| IRT | 4 | 13 | 15 | 5 | 5 | 6 | 17 | 10 | 5 | 15 | 9 | 8 | 5 | 10 | 3 | 8 | 4 | 5 | 11 | 4 | 3 | 7 | 6 | 5 |
| IZN | ||||||||||||||||||||||||
| KAK | 8 | 9 | 6 | 6 | 17 | 13 | 8 | 13 | 8 | 6 | 7 | 10 | 8 | 6 | 4 | 12 | 8 | 6 | 7 | 7 | 6 | 8 | 11 | 5 |
| KDU | 5 | 4 | 16 | 13 | 4 | 10 | 9 | 15 | 7 | 7 | 4 | 6 | 11 | 5 | 5 | 8 | 8 | 5 | 4 | 6 | 3 | 7 | 4 | 8 |
| KMH | ||||||||||||||||||||||||
| KNY | 7 | 3 | 4 | 4 | 13 | 13 | 8 | 14 | 7 | 8 | 7 | 10 | 10 | 5 | 4 | 12 | 8 | 6 | 7 | 5 | 3 | 8 | 8 | 6 |
| KOU | 4 | 4 | 9 | 2 | 12 | 7 | 5 | 9 | 10 | 5 | 6 | 10 | 11 | 13 | 7 | 6 | 5 | 10 | 7 | 15 | 7 | 4 | 6 | 5 |
| LER | 7 | 10 | 32 | 16 | 18 | 15 | 6 | 7 | 6 | 3 | 4 | 2 | 9 | 23 | 27 | 10 | 11 | 10 | 33 | 7 | 5 | 20 | 61 | 25 |
| LRM | 15 | 15 | 33 | 14 | 9 | 10 | 19 | 29 | 12 | 11 | 7 | 10 | 23 | 20 | 12 | 10 | 14 | 7 | 14 | 8 | 7 | 8 | 6 | 19 |
| LVV | 6 | 4 | 10 | 8 | 7 | 12 | 5 | 16 | 8 | 6 | 12 | 16 | 6 | 14 | 12 | 5 | 12 | 6 | 32 | 7 | 7 | 5 | 11 | 12 |
| LYC | ||||||||||||||||||||||||
| LZH | 9 | 9 | 10 | 3 | 9 | 8 | 8 | 9 | 5 | 4 | 7 | 5 | 9 | 9 | 3 | 9 | 4 | 8 | 6 | 3 | 3 | 4 | 6 | 4 |
| MAB | ||||||||||||||||||||||||
| MAW | ||||||||||||||||||||||||
| MBO | 4 | 7 | 5 | 6 | 7 | 13 | 11 | 9 | 18 | 20 | 8 | 8 | 12 | 9 | 15 | 8 | 6 | 6 | 8 | 11 | 6 | 5 | 17 | 12 |
| MCQ | 20 | 24 | 67 | 38 | 39 | 169 | 82 | 193 | 98 | 29 | 163 | 88 | 164 | 125 | 185 | 256 | 153 | 53 | 54 | 45 | 29 | 25 | 30 | 38 |
| MEA | 23 | 41 | 102 | 45 | 36 | 475 | 161 | 248 | 186 | 33 | 103 | 50 | 32 | 56 | 48 | 39 | 20 | 14 | 35 | 7 | 9 | 38 | 62 | 56 |
| MGD | ||||||||||||||||||||||||
| MID | ||||||||||||||||||||||||
| MMB | 4 | 4 | 6 | 5 | 11 | 8 | 8 | 11 | 7 | 6 | 6 | 8 | 7 | 6 | 3 | 11 | 5 | 5 | 5 | 4 | 4 | 9 | 8 | 5 |
| NAQ | 126 | 61 | 186 | 248 | 125 | 188 | 286 | 166 | 162 | 78 | 36 | 42 | 20 | 61 | 32 | 89 | 100 | 45 | 186 | 93 | 111 | 195 | 244 | 197 |
| NCK | 3 | 3 | 5 | 2 | 3 | 10 | 5 | 13 | 2 | 2 | 11 | 8 | 4 | 13 | 5 | 6 | 7 | 2 | 14 | 3 | 3 | 3 | 7 | 7 |
| NEW | 11 | 10 | 16 | 18 | 5 | 54 | 17 | 37 | 21 | 8 | 13 | 7 | 4 | 9 | 16 | 3 | 7 | 6 | 8 | 8 | 5 | 17 | 18 | 7 |
| NGK | 4 | 2 | 5 | 2 | 3 | 7 | 1 | 9 | 2 | 3 | 10 | 9 | 8 | 14 | 11 | 6 | 9 | 2 | 11 | 5 | 3 | 1 | 4 | 4 |
| NUR | 22 | 14 | 20 | 11 | 9 | 8 | 6 | 12 | 8 | 4 | 14 | 18 | 20 | 31 | 34 | 17 | 9 | 12 | 69 | 19 | 6 | 15 | 41 | 30 |
| NVS | 5 | 4 | 6 | 5 | 4 | 12 | 8 | 8 | 7 | 10 | 5 | 7 | 10 | 10 | 4 | 8 | 5 | 4 | 12 | 5 | 5 | 6 | 5 | 4 |
| OTT | 12 | 7 | 36 | 11 | 9 | 39 | 34 | 27 | 20 | 7 | 8 | 4 | 6 | 10 | 10 | 9 | 18 | 6 | 16 | 14 | 15 | 19 | 13 | 13 |
| PAF | 6 | 10 | 12 | 8 | 8 | 11 | 4 | 3 | 4 | 8 | 2 | 5 | 2 | 6 | 4 | 7 | 3 | 2 | 28 | 5 | 3 | 10 | 27 | 18 |
| PAG | ||||||||||||||||||||||||
| PEG | ||||||||||||||||||||||||
| PHU | 8 | 8 | 10 | 5 | 13 | 11 | 3 | 11 | 6 | 11 | 12 | 8 | 12 | 9 | 4 | 15 | 5 | 10 | 6 | 4 | 4 | 4 | 10 | 4 |
| PPT | 3 | 3 | 5 | 11 | 5 | 28 | 15 | 19 | 5 | 4 | 7 | 3 | 4 | 7 | 4 | 7 | 5 | 3 | 4 | 6 | 5 | 3 | 14 | 3 |
| PST | ||||||||||||||||||||||||
| QSB | 6 | 4 | 6 | 3 | 3 | 14 | 8 | 6 | 12 | 6 | 4 | 5 | 6 | 9 | 9 | 6 | 8 | 8 | 18 | 4 | 5 | 3 | 16 | 8 |
| RES | 32 | 18 | 45 | 13 | 15 | 30 | 24 | 39 | 24 | 19 | 26 | 20 | 30 | 92 | 42 | 58 | 53 | 136 | 131 | 96 | 93 | 125 | 60 | 13 |
| SBA | 27 | 24 | 91 | 54 | 41 | 49 | 26 | 39 | 25 | 28 | 31 | 13 | 18 | 26 | 24 | 46 | 53 | 69 | 34 | 29 | 39 | 36 | 26 | 33 |
| SFS | ||||||||||||||||||||||||
| SHU | ||||||||||||||||||||||||
| SIT | 16 | 24 | 38 | 11 | 11 | 181 | 77 | 112 | 69 | 10 | 61 | 15 | 14 | 28 | 64 | 29 | 20 | 25 | 17 | 11 | 10 | 12 | 16 | 17 |
| SJG | 3 | 4 | 9 | 5 | 12 | 12 | 4 | 7 | 7 | 3 | 4 | 4 | 2 | 4 | 9 | 4 | 6 | 6 | 4 | 7 | 5 | 3 | 6 | 3 |
| SOD | 105 | 64 | 46 | 60 | 23 | 39 | 32 | 16 | 20 | 7 | 8 | 16 | 35 | 26 | 60 | 49 | 36 | 36 | 373 | 61 | 56 | 28 | 227 | 105 |
| SPT | 4 | 5 | 5 | 3 | 3 | 14 | 11 | 14 | 5 | 2 | 9 | 9 | 5 | 5 | 11 | 6 | 7 | 6 | 23 | 10 | 4 | 4 | 14 | 13 |
| STJ | 19 | 14 | 35 | 26 | 12 | 20 | 21 | 33 | 15 | 21 | 20 | 24 | 18 | 15 | 6 | 25 | 10 | 16 | 23 | 18 | 26 | 23 | 37 | 8 |
| SUA | 4 | 3 | 6 | 5 | 3 | 11 | 6 | 10 | 4 | 3 | 6 | 10 | 3 | 5 | 5 | 2 | 6 | 4 | 16 | 3 | 4 | 3 | 10 | 7 |
| TAM | 6 | 7 | 5 | 4 | 4 | 16 | 12 | 7 | 21 | 15 | 7 | 2 | 11 | 11 | 19 | 7 | 5 | 5 | 19 | 9 | 7 | 5 | 21 | 14 |
| TAN | 3 | 3 | 4 | 3 | 4 | 8 | 3 | 2 | 2 | 3 | 8 | 1 | 2 | 5 | 7 | 6 | 5 | 3 | 13 | 5 | 6 | 2 | 15 | 4 |
| TDC | ||||||||||||||||||||||||
| THL | 19 | 19 | 31 | 14 | 14 | 26 | 16 | 22 | 48 | 41 | 57 | 82 | 67 | 110 | 69 | 45 | 91 | 52 | 58 | 19 | 28 | 21 | 47 | 19 |
| THY | 4 | 3 | 6 | 3 | 3 | 10 | 5 | 12 | 2 | 2 | 11 | 8 | 4 | 12 | 4 | 6 | 7 | 2 | 15 | 3 | 3 | 3 | 7 | 8 |
| TRW | 3 | 3 | 10 | 3 | 11 | 15 | 5 | 6 | 8 | 3 | 3 | 4 | 6 | 6 | 12 | 6 | 9 | 7 | 5 | 4 | 3 | 2 | 6 | 5 |
| TSU | 1 | 1 | 2 | 1 | 2 | 3 | 8 | 4 | 6 | 6 | 7 | 1 | 4 | 1 | 1 | 3 | 4 | 3 | 7 | 6 | 3 | 2 | 9 | 4 |
| TUC | 6 | 4 | 13 | 12 | 5 | 19 | 11 | 10 | 5 | 5 | 4 | 3 | 4 | 6 | 16 | 6 | 10 | 3 | 6 | 5 | 8 | 10 | 8 | 5 |
| UPS | 15 | 7 | 21 | 11 | 8 | 8 | 7 | 6 | 6 | 4 | 10 | 14 | 17 | 31 | 29 | 8 | 14 | 8 | 55 | 19 | 4 | 13 | 38 | 24 |
| VAL | 5 | 5 | 16 | 4 | 13 | 8 | 7 | 5 | 8 | 9 | 9 | 4 | 4 | 14 | 20 | 17 | 11 | 8 | 42 | 6 | 14 | 5 | 18 | 18 |
| VIC | 12 | 15 | 18 | 23 | 5 | 54 | 14 | 35 | 19 | 8 | 13 | 5 | 6 | 9 | 15 | 5 | 8 | 6 | 10 | 11 | 7 | 14 | 16 | 11 |
| VSS | 2 | 4 | 7 | 2 | 9 | 7 | 2 | 6 | 7 | 5 | 4 | 5 | 6 | 5 | 10 | 5 | 7 | 4 | 3 | 5 | 4 | 3 | 8 | 5 |
| WNG | 8 | 4 | 17 | 7 | 8 | 12 | 6 | 10 | 4 | 5 | 11 | 15 | 6 | 24 | 19 | 5 | 20 | 6 | 64 | 18 | 8 | 9 | 16 | 19 |
| YKC | 41 | 101 | 369 | 265 | 100 | 597 | 436 | 331 | 212 | 71 | 151 | 73 | 74 | 100 | 166 | 278 | 56 | 50 | 73 | 24 | 21 | 33 | 115 | 28 |
- Date modified: