Although the sun shone on Sunday, the former capital was without power and water, and food prices had doubled overnight, with many storeholders unsure of when they would be able to replenish stocks. Most shops had sold out of candles.
An Electricity Board official said it was impossible to know when the power supply - hit-and-miss at the best of times in one of Asia's poorest countries - would be restored.
"We still have to clear the mess," the official, who did not want to be named, said.
United Nations disaster experts said it would be days before the full extent of the damage was known in a country ruled since 1962 by secretive and ruthless military regimes.
Bunkered down in Naypyidaw, 240 miles to the north, the junta's top brass will almost certainly have avoided the worst of the storm.
The regime declared a disaster in five states and government television carried footage of soldiers clearing trees from roads and Prime Minister Thein Sein, a lieutenant-general, meeting people sheltering in a Buddhist pagoda.
"DIRECT HIT"
As soldiers and police tried to clear streets and find victims beneath the rubble of fallen buildings, relief experts scrambled in neighbouring Thailand in case the junta - normally deeply distrustful of the outside world - asked for help.
"It was a direct hit on a major city," said Terje Skavdal, regional head of the U.N. Office for the Coordination of Humanitarian Affairs (UNOCHA).
"The government did warn people to stay inside and that might have had an impact, but the material damage is enormous," Skavdal said. The U.N. had yet to receive a response from the junta to its official offer of help, he added.
It remains to be seen what impact the storm will have on a referendum on an army-drafted constitution scheduled for May 10.
The charter is part of a "roadmap to democracy" meant to culminate in multiparty elections in 2010 and end nearly five decades of military rule. The opposition and Western governments say it allows the army to retain too much control.
All flights in an out of Yangon were cancelled. Thai Airways in Bangkok said they would not resume until Monday at the earliest.
By 1500 GMT (4:00 p.m. British time), Nagris had tracked northeast into northern Thailand, where it was dumping large amounts of rain but with dramatically reduced wind speeds.
