The immediate cause is record rainfall.

直接的原因是破纪录的降雨量。

youdao

Central Vietnam has seen record rainfall this week, with some areas getting twice as much rain as is normal for this time of year.

本周越南中部的降雨量已创纪录，某些地区的雨水是历年同时期的两倍。

youdao

The program also uses solar-powered weather stations to record local rainfall amounts.

VOA: special.2010.05.11

The move comes despite Dumfries and Galloway having had record rainfall during a number of periods last year.

BBC: Drought concern follows Dumfries and Galloway dry spell

However, following record rainfall when flooding at the site became an issue, the company had helped pump the water away.

BBC: Wilwell Farm Cutting recovery to take 'five years'

This year, she is also raising a variety of tomatoes, but the record rainfall in Texas has taken a toll: Her Celebrities, Carnivals, Big Boys and Champions are taking a long time to ripen.

NPR: Summer Food: Blueberries, Texas Caviar, Tomatoes