# Natural Disasters

{% hint style="success" %}
Here the available via the API climatic variables are presented and described. The detailed reference for the API can be found [here](https://docs.answr.space/api-reference/natural-disasters).
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In the following sub pages the detailed description of each natural disaster data layer is presented.

{% content-ref url="natural-disasters/cold-wave-probability" %}
[cold-wave-probability](https://docs.answr.space/api-data-layers/natural-disasters/cold-wave-probability)
{% endcontent-ref %}

{% content-ref url="natural-disasters/drought-probability" %}
[drought-probability](https://docs.answr.space/api-data-layers/natural-disasters/drought-probability)
{% endcontent-ref %}

{% content-ref url="natural-disasters/flood-severity" %}
[flood-severity](https://docs.answr.space/api-data-layers/natural-disasters/flood-severity)
{% endcontent-ref %}

{% content-ref url="natural-disasters/heat-wave-probability" %}
[heat-wave-probability](https://docs.answr.space/api-data-layers/natural-disasters/heat-wave-probability)
{% endcontent-ref %}

{% content-ref url="natural-disasters/windstorm-probability" %}
[windstorm-probability](https://docs.answr.space/api-data-layers/natural-disasters/windstorm-probability)
{% endcontent-ref %}

{% content-ref url="natural-disasters/wildfire-frequency-occurrence" %}
[wildfire-frequency-occurrence](https://docs.answr.space/api-data-layers/natural-disasters/wildfire-frequency-occurrence)
{% endcontent-ref %}

{% content-ref url="natural-disasters/extreme-heat-probability" %}
[extreme-heat-probability](https://docs.answr.space/api-data-layers/natural-disasters/extreme-heat-probability)
{% endcontent-ref %}

{% content-ref url="natural-disasters/extreme-cold-probability" %}
[extreme-cold-probability](https://docs.answr.space/api-data-layers/natural-disasters/extreme-cold-probability)
{% endcontent-ref %}

## **Probabilities of Occurrence**

The following table presents the summary for each natural disaster data layer that is available on the platform.

|       Hazard       |       Intensity Parameter       |                 Intensity Threshold                |  Period Duration in years |    Aggregation    |     Units    |
| :----------------: | :-----------------------------: | :------------------------------------------------: | :-----------------------: | :---------------: | :----------: |
|      Cold Wave     |     Cold Wave Duration Index    |           9 (High), 7 (Moderate), 5 (Low)          |             42            |      Monthly      |     Days     |
|       Drought      |       Consecutive Dry Days      |  80 (Extreme), 75 (High), 50 (Moderate), 30 (Low)  |             42            |      Seasonal     |     Days     |
|      Heat Wave     |     Heat Wave Duration Index    |           9 (High), 7 (Moderate), 5 (Low)          |             42            |      Monthly      |     Days     |
|      Windstorm     |         Mean Wind Speed         |        22.2 (High), 20 (Moderate), 15 (Low)        |             42            |      Monthly      |      m/s     |
|        Flood       |              Depth              |        0.5 (High), 0.3 (Moderate), 0.1 (Low)       | 10, 20, 50, 100, 200, 500 |       Yearly      |    meters    |
| Wildfire Frequency |       Per mill occurrence       |           3 (High), 2 (Moderate), 1 (Low)          |             22            | Whole time series | Clear number |
|    Extreme Heat    | Universal Thermal Climate Index |  46 (Extreme), 38 (High), 32 (Moderate), 26 (Low)  |             82            |      Monthly      |    Celsius   |
|    Extreme Cold    | Universal Thermal Climate Index | -40 (Extreme), -27 (High), -13 (Moderate), 0 (Low) |             82            |      Monthly      |    Celsius   |