Five more emergency alert sirens are schedued to be tested, this time in East Honolulu and Waipahu neighborhoods today, state and city civil defense officials are warning.

In Waipahu, sirens will be tested from 9 a.m. to noon at Crest View Park and Waipahu Shopping Center in Waipahu. The siren at the Department of Education’s Nursery on 22nd Avenue in Kaimuki will also be tested during those hours.

Sirens at Aina Haina Elementary School and Niu Valley will be tested from 1 to 3 p.m.

Sirens may off in these areas for up to 30 seconds at a time, officials said.

Five other sirens in Aiea and Pearl City experienced no glitches during testing Monday, said Melvin Kaku, the city’s emergency management director.

An additional five sirens will be tested Wednesday although officials won’t know where on Oahu they will be until later today, Kaku said.

The sirens being tested by technicians experienced problems either during recent, monthly sounding tests or during Oct. 27’s tsunami, Kaku said.

It’s difficult to gauge when a siren malfunctions, since insects and moisture could affect their operations from day to day, he said.