Sirens when it rains? Near Glendale area.

[Border Scot]

Originally Posted by bigDwiki

Probably a house alarm. Car alarms go only for a few mins. House alarms go off until reset. If it sounds like a cop siren, its not the kind that are on poles.

A bit of misleading info here. I've worked with most all major brands of security alarm equipment and all the siren drivers that I've ever worked with, whether they were part of the main panel or a separate circuit board, would time out. Some had adjustable duration and others were fixed but in no case would they sound for more than 15 minutes. Most city alarm ordinances require this for both commercial and residential security alarm systems. If a residential security alarm doesn't reset it was probably kluged together by the home owner from parts gleaned from who knows where.

In the interest of accuracy, commercial fire alarm systems are a bit different in this respect. Internal sounders, typically a pulsed steady tone or klaxon sound rather than a siren sound, and visual alerting devices are manually shut down by zone by a responsible party from the business or the Fire Department.

There's more but you get the idea!

[bigDwiki]

My house alarm (ADT) goes off until I reset it. Sometimes it goes off for 6 hours before I get to it.

[Border Scot]

It shouldn't.

[Coreywayne92]

The ground is so dry due to heat, roads are way too dangerous when wet. Like black ice slippery.