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The exceptional rainfall event in Lisbon on 18 February 2008
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Orientador(es)
Resumo(s)
On 18 February 2008, the Lisbon city district,
in the capital of Portugal, suffered the rainiest day on record since the continuous daily
precipitation data at the D. Luís Observatory
was first published in 1864 in the Observatory’s log books (Annales). On this day, 118.4
millimetres was recorded at the Observatory,
exceeding the previous highest daily total
recorded as long ago as 1876 (Figure 1).
This extreme event was responsible for
a wide variety of negative impacts, namely
urban inundations (motivating hundreds
of calls to the fire-fighters and civil protection brigades), flash flooding (occurring mostly in small drainage basins with
short concentration times, such as the one
shown in Figure 2), and landslides (a total
of 64 occurrences related to slope instability were reported). The National Authority
of Civil Protection reported four deaths,
65 people dislodged and 121 evacuated
in safety and rescue operations. No official
information is available concerning the estimate of total financial costs associated with
this extreme event, considering that other
direct and indirect impacts of the storm
should be taken into consideration: namely
those associated with disruption of train
services, blocked roads and electric power
breakdowns.
In this paper, we study the spatial distribution and temporal evolution of this extreme
rainfall event. Then we fit an appropriate
extreme values distribution and compute
the return period associated with this event
for several stations available in the Lisbon
area. Finally, we provide a short description
of the evolution of the synoptic situation
leading to this extreme rainstorm.
Descrição
Palavras-chave
Exceptional rainfall Lisbon February 2008
Contexto Educativo
Citação
Fragoso, M., Trigo, R. M., Zezere, J. L., & Valente, M. A. (2010). The exceptional rainfall event in Lisbon on 18 February 2008. Weather, 65(2), 31–35. https://doi.org/10.1002/wea.513.
Editora
Royal Meteorological Society