UTV Editor Chris Hagan has tweeted that initial reports suggest between 90 and 100 people fell into the water in Strangford Lough, and that the first casualties have arrived on dry land:
First reports suggesting between 90 and 100 people in the water in Strangford Lough. Two choppers in air. Major incident declared
First casualties being landed from major incident on Stangford Lough. Number of boats capsized after sudden weather storm.