Storms
This is due to persistent heavy rain, with "more heavy rain expected tonight into tomorrow".
"This will cause serious strain on emergency services. Take extreme caution in these areas," SAWS said.
Tropical storm Eloise is currently over the north of the country.
Roads are flooding, as is the Kruger National Park where rivers are overflowing and all gravel roads closed.
The victims died in the worst-hit port city of Beira, most of them killed by falling trees, authorities said.
Cars were submerged in water, walls of some low lying buildings collapsed and swathes of land were flooded in the city, posts on social media showed.
The districts of Buzi and Nhamatanda were affected by severe flooding.
Mozambique President Filipe Nyusi is set to travel to the area.

The International Space Station spotted an exotic type of upside-down lightning called a blue jet (illustrated) zipping up from a thundercloud into the stratosphere in 2019.
A blue jet - a bolt of lightning that shoots upwards from thunderstorm clouds - has been spotted from the International Space Station.
The phenomenon was spotted by the European Atmosphere-Space Interactions Monitor (ASIM) near the island of Naru in the Pacific Ocean.
In an article published in the science journal Nature, astronomers describe seeing five intense blue flashes, each lasting about 10 milliseconds.
Four of the flashes were accompanied by a small pulse of ultraviolet light, which appear as rapidly expanding ring. They are formed by the interaction of electrons, radio waves and the atmosphere and are known as elves (Emissions of Light and Very Low Frequency Perturbations due to Electromagnetic Pulse Sources).
The high winds and bad weather also caused traffic havoc across the island and disrupted the demonstration over bar and restaurant closures.
In central Palma palm trees in the Paseo Marítimo and Plaza de la Reina were damaged by the high winds.

Landslide in Cimanggung District, Sumedang Regency, West Java Province, Indonesia, 09 January 2021, where 24 people died.
According to the National Disaster Management Agency, BNPB, hydrometeorological disasters dominate the list, with 127 flood events and 30 landslides recorded in several regions of the country during the period 01 to 21 January 2021.
At least 166 people have died in the disasters, including 91 in earthquakes, 41 in landslides and 34 as a result of floods.
Benjamin Trachtenberg recorded a video that shows lines of skiers standing still as the snow devil sweeps through the group. Trachtenberg told Storyful that the snow devil lasted for close to 30 seconds and did not injure the large group.
Certified broadcast meteorologist Tyler Jankoski said on his Twitter post that the weather event can be called a snow devil or a "snownado". According to the World Meteorological Organization, snow devil is "a very rare phenomenon."
Credit: Benjamin Trachtenberg via Storyful
As of 20 January, the UN Office for the Coordination of Humanitarian Affairs reported that more than 1,000 people have been directly affected in Madagascar and more than 50 houses were destroyed, as Tropical Storm Eloise passed through Antalaha, Maroantsetra, Vavatenina and Toamasina districts. Quoting local sources, OCHA said 1 person was killed in the storm.
The storm flooded 134 houses and destroyed 56, while nearly 100 schools were impacted, including 87 that were damaged and 11 destroyed, OCHA added.
The weather in Dubrovnik over the past few days has been extremely cold with even snow falling on the city as temperatures dropped into the minuses. This latest weather phenomenon certainly catches the eye.
In fact, such waterspouts, tornadoes that form over water, aren't that rare in Dubrovnik but this one today was particularly impressive.












Comment: Freak storm causes damage across the island of Majorca, Spain