Three of the four SAR helicopters available in the area grounded due inclement weather. It's been foul up there overnight, but land-based patrols in teams of four have been making progress, in constant contact with AWACS. Strange that not one ELT signal has been caught - that's one out of a possible six (acft plus lifejackets - if they were worn; this was an overland military flight). Acft was the newest of four C130J Super-Hercules the RNAF have had in operation since August 2010. High-ranking, highly-skilled crew on board.