IRCS Secretary General Zaher Rostami said the convoy consists of tents, food, blankets and medicines, IRIB reported on Sunday.
He went on to say that 40 tons of the aid will be sent by air while the other 80 tons is to be dispatched by sea in a week.
The IRCS official further noted that the society sent some 40 tons of humanitarian aid to Somalia’s capital, Mogadishu, in Farvardin (21 March-20 April).
Rostami also expressed the society’s readiness to dispatch medical teams and establish a field hospital in Somalia.
More than 1.5 million Somalis have been internally displaced by a tug of war among the armed factions in the African country, which has been without an effective central government since the overthrow of the country’s former dictator Mohamed Siad Barre in 1991.
Meanwhile, the United Nations Children’s Fund has suspended airlifting food to Somalia’s drought-affected regions due to “logistical” problems.
This comes as more than a dozen children died of hunger at Hwadag’s refugee camp in the northern district of Mogadishu earlier this week, reports say.
Millions of people are in dire need of emergency aid due to the prolonged drought in the Horn of Africa, hit by the worst drought in 60 years.