Alriyadh is an Arabic language site with lots more pictures and videos.
And from the Emirates Meteorology Portal:
Heavy rainfall with thunderstorms inundated Jeddah in Saudi Arabia, with an incredible rainfall of 111mm [4.37 inches]. This compares nicely with an annual average of around 50mm. Tons of traffic problems with trapped cars and people. The city’s infrastructure and geography might be blamed, but 111mm of rain is quite high.And I suspect most of us really don't have a good sense of where Jeddah is in Saudi Arabia, or even where Saudi Arabia is in relation to other Middle East nations, so here's a map. Jeddah is to the right of the words RED SEA.
4 people have been confirmed dead.
Click here for a video of the rain in Jeddah on Jan 26, 2011.