April 30th, 2010
April proved to be really wet across a large part of the Arabian Peninsula, mainly over much of central Saudi Arabia and Yemen. Kuwait, Bahrain, and Qatar have also been affected by periods of thunderstorms. Iraq and western Iran also got periods of heavy rain/showers/thunderstorms.

Rain in Riyadh
Thunderstorms were forming on more or less a daily basis for at least 3 weeks. And this is not reaching an end yet, thanks to abundant equatorial moisutre coming and weak upper troughs!
But how much rain really fell?
The first map below shows rainfall accumulation/day during the last 30 days. Well, Saudi Arabia got more rainfall than France or Germany! It seems that rainfall was between 50 and 250 mm. And SW Saudi Arabia was hit hard by around 200 mm of flooding rain, which resulted in fatalities.

Rainfall for last 30 days ending on Apr 30, 2010
What is even more astonishing is the upcoming May storm!
April 23rd, 2010

Tropical moisture continues to flow into Arabia, and lows continue to drift over SW Asia, inducing thunderstorms formation over Yemen, Saudi Arabia, Kuwait, Iraq, and Iran. During the next 7 days, it will be the same with effects possibly reaching Bahrain and Qatar.
There are hints that early May will also show a similar pattern; however, that will be extremely abnormal given that May is a very dry month and summer is on the way
April 17th, 2010
Numerous thunderstorms have affected the Arabian peninsulua with severe storms in SW Saudi Arabia as well as strong storms in Bahrain. There are reports of casualities in Saudi Arabia
Between 100 and 200 mm have fallen over Saudi Arabia

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