Hazard Characterization of the Annual Maximum Daily Precipitation in the Southwestern Iberian Peninsula (1851–2021)

High-intensity rainfall can raise fluvial channel levels, increasing the risk of flooding. Maximum precipitation depths are used to estimate return periods and, thus, calculate this type event. To improve these estimates in Southwest Europe, we studied behavior extreme using historical records San Fernando (Cádiz, southwest Spain), obtaining maximum daily annual (period 1851–2021). Local levels for intense were established based on mean values and standard deviation precipitation. In series, 38% years had some (>53.7 mm), which 13% high (>73.2 mm) or disaster (>92.7 mm). thresholds, is mostly concentrated autumn months. The SQRT-ETMax model fits well with instrumental up 25 years, although it may present appreciable deviations longer periods. Using a 170-year secular more precise understanding variability was obtained.