Hussain al-Bukhaiti, a pro-Houthi activist, told Al Jazeera at least 16 air strikes targeted the village of Hiran in Hajjah province on Tuesday, killing 30 people, including a family of 10.
Quoting local residents, Bukhaiti said the raids started shortly after midnight, targeting the home of Sheikh Hamdi, a Houthi loyalist, killing him and his family.
The strikes reportedly continued until 5pm local time (14:00 GMT). According to Bukhaiti, the devastation prevented relatives and rescue workers from retrieving the bodies of the dead.
Al Masirah, a TV channel run by the Houthis – a group of rebels who control Hajjah province, the capital Sanaa, as well as other parts of central Yemen – said 10 paramedics were also killed.
It published photos on Twitter and its website showing a bombed-out vehicle and dead children.
Al Jazeera could not independently verify the claims.
Yemen has been torn apart by conflict since 2014, when Houthi rebels, allied with troops loyal to former president Ali Abdullah Saleh, captured large expanses of the country, including Sanaa.
A coalition of Arab countries assembled by Saudi Arabia launched an air campaign against the rebels in March 2015 to try to restore the internationally recognised government of President Abd-Rabbu Mansour Hadi to power.
Since then, more than 10,000 people have been killed, millions forced from their homes, and the country facing severe famine and a deadly cholera outbreak.