![Making sense of severe weather risks requires using multiple reliable sources of weather observations, including your own observation, such as these cumulonimbus mammatus clouds that appeared over downtown Arlington Heights during a Tornado Watch on January 7, 2008 -- the same day an EF-3 tornado hit Poplar Grove, Illinois](https://www.arlingtoncardinal.com/wordpress/wp-content/uploads/2023/04/CumulonimbusMammatus20080107-326x245.jpg)
Village of Arlington Heights, NWCDS 9-1-1 Center Not on Same Page on Outdoor Warning Siren Activation Criteria
CARDINAL NEWS has discovered that the Outdoor Warning Siren activation criteria revealed by the 9-1-1 dispatch organization (Northwest Central Dispatch System), which is responsible for activating Outdoor Warning Sirens, does not match the public information […]