> For the complete documentation index, see [llms.txt](https://docs.humdata.org/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.humdata.org/about/hdx-signals.md).

# HDX Signals

HDX Signals monitors key datasets and generates automated emails when significant, negative changes are detected. Signals are identified for given datasets and locations.

Over 200 locations are monitored, with coverage varying depending on the dataset. The following table details the number of locations covered by each dataset:

| Datasets                               | Number of locations |
| -------------------------------------- | ------------------- |
| Agricultural hotspots                  | 81                  |
| Conflict events                        | 188                 |
| Food insecurity                        | 52                  |
| INFORM Severity Index                  | 191                 |
| Internal conflict-driven displacements | 82                  |
| Internal disaster-driven displacements | 199                 |
| Market monitoring                      | 80                  |

We use a thresholds approach to identify when a signal should be created in a given dataset. The specific methodology for each dataset is detailed in the "Datasets" section of this site. We only send a signal if it has been detected in the past sixty days and if no identical signal was detected in the past six months.


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