The National Police Air Service has condemned Nigel Griffiths' use of a laser pen as "stupid and reckless".
"The sentence itself should act as a deterrent to others who should look at this and think this is not a game" says Chief Supt Ian Whitehouse.
"Real people's lives are put at risk. Anyone who takes it upon themselves to shine a laser at an aircraft will result in being arrested, being prosecuted and will get a criminal record".
More top news
The heavy showers will ease during the first part of tonight, leaving a dry night with mist in places.
A 1950s pin-up girl from the Vale of Glamorgan has returned to the spot where she won the nation's hearts.
The band play the Liberty Stadium on Saturday night as part of their 'Everything Must Go' 20th anniversary tour.