Summary
severe weather Dubuque County's annual average for severe weather events (1995-2009), according to the National Weather Service: Hail larger than an inch 2 times per year Winds of 58 mph+ 3.5 Winds of 70 mph+ 0.9 Tornado warnings 1.3 (There have been five verified tornadoes.) Severe thunderstorm warnings 4.7
You might hear Dubuque's outdoor warning sirens more often this spring, and it has nothing to do with the number of local tornadoes.See the full content of this document
Extract
What Does It Mean When the Sirens Sound?
"People could hear the sirens if there is no tornado," said Tom Berger, Dubuque County's emergency management director.
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