A member of staff at Glenshee Ski Centre alerted SAIS to the slide on Glas Tulaichean, a 3,448ft (1,051m) Munro.
SAIS Southern Cairngorms said the full depth avalanche was filled with mud, rocks and large blocks of snow.
Another large slide was recorded at Creag Meagaidh in February.
The Sportscotland Avalanche Information Service (SAIS) provides avalanche hazard information reports for walkers, climbers and skiers from December to early April.
The service covers hills and mountains in Lochaber, Glencoe, Creag Meagaidh, Southern Cairngorms, Northern Cairngorms and Torridon.

The MP was suspended by Labour last week and apologised to the Commons for endorsing calls in 2014 for Israel to be moved to the United States.
The comments triggered a wider row over alleged anti-Semitism within the party, with an inquiry now under way.
Keith Vaz, the chair of the committee, said Ms Shah would not take part in its meetings for the time being.
The committee is beginning an inquiry into the extent of anti-Semitism in the UK and will call Labour leader Jeremy Corbyn and Ken Livingstone, the former mayor of London who was suspended from Labour for suggesting Adolf Hitler was a Zionist, among its witnesses.
Mr Vaz said Ms Shah - the MP for Bradford West who was elected to Parliament in May 2015 - had requested not to be involved in this inquiry or the committee's other activities for the time being.
"Naz Shah has informed me and the committee that she wishes to stand aside from all her duties until current matters are resolved," he said.
"We have accepted her decision. She will not take part in any future matters concerning the Home Affairs Select Committee with immediate effect."
Mr Corbyn has asked the former head of Liberty, Shami Chakrabarti, to lead an inquiry into the extent of anti-Semitism and "other forms of racism" in the party. No timeframe has been given for when its findings will be published.
Ms Shah told MPs last week that she regretted a series of Facebook posts in April 2014, including one endorsing a suggestion that Israel should be relocated to the United States as a "solution" to the Israeli-Palestinian conflict.

Paul Doyle, a Translink Metro driver based at the Falls Road depot, stopped in November to give the man a winter coat he had bought for him.
He received the special award from the National Campaign for Courtesy.
The charity described him as a true inspiration whose generosity had touched the hearts of the nation.
Mr Doyle's act of kindness was witnessed by passengers - one of whom posted to Translink's Facebook page.
The post was shared on Facebook by AnnaMarie McDaniel. She wrote: "Couldn't believe how kind the bus driver was, such a thoughtful act".
The post was seen by more than 65,000 people and was shared more than 3,700 times.
Mr Doyle noticed the young man outside while out driving during his shifts and was concerned by his lack of suitable clothing in cold and often wet winter weather conditions.
He decided to buy the man a warm coat and give it to him the next time he passed by in his bus.
Paul received a special certificate from Paul Smith, from National Campaign for Courtesy, who said: "I came across Paul's story while reading the 'Metro' newspaper on my daily commute through London - just as his act of kindness went viral.
"Paul is a true inspiration," he said.
"It shows how even one simple act of generosity can be so powerful it touches the hearts of an entire nation and raises the profile of a serious societal issue.
"Kindness has a knock-on effect. Paul tells me that both he and other Belfast bus drivers have observed that car drivers are more patient since this story went viral.
"On behalf of the National Campaign for Courtesy, I would like to thank Paul and officially recognize his exceptional thoughtfulness."
On receiving his award, Mr Doyle said: "It's brilliant - I'm pleased I've made more people think about people in need out there.
"I'm blown away by the reaction - my passengers are still talking about it."
The largest avalanche recorded by the Sportscotland Avalanche Information Service so far this season has been discovered in the Southern Cairngorms.
[NEXT_CONCEPT]
Ex-Labour MP Naz Shah has "stood aside" from the Commons Home Affairs select committee "until further notice".
[NEXT_CONCEPT]
A Belfast bus driver who stopped his bus to give a homeless man a winter coat has won a national award for his kindness.