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Alder Denise DeMarb

Alder Denise DeMarb,
Council President Pro Tem

Home Address:
6010 Fredericksburg Lane


Phone: 608-358-3195
district16@cityofmadison.com
Common Council Office:
210 Martin Luther King, Jr. Blvd
Room 417
Madison, WI 53703
Phone: (608) 266-4071
Fax: (608) 267-8669
WI Relay Service

sirens

June 19, 2014 8:51 PM

Alders,

The Storms this week brings forward the fact that we have a high potential for violent storms in our area.  Over the last 10 years City Engineering has significantly improved Early Warning Coverage within the City of Madison.  The attached 2005 plan.pdf indicates the coverage at that time.  The yellow sirens are Dane County Emergency Management sirens many of which were old, electronic and not reliable, or small and originally put up as Civil Defense Sirens.  The attached 2014 map is where we are at as of today.  You will notice that a significant number of sirens have been replaced/upgraded to larger and more modern models with much more overlapping coverage than previously.

Siren coverage is based on a defined amount of sound at a given distance from the siren.  That coverage of course does not take into account buildings, tree cover, and other terrain features that affect the sound waves.  In addition wind speed/direction play a huge role in how a siren might be heard from storm to storm.  It should also be noted that the warning sirens are intended to provide outdoor warning and are not designed to be heard inside of a typical structure within the coverage area.  For that reason, it is essential that citizens protect themselves by purchasing a weather radio for use inside the home or business.

In the next 2-3 years we will be working in cooperation with Dane County Emergency Management to adjust some coverage areas and to provide additional infill as necessary.  If you have any information to indicate that citizens are not able to hear the warning sirens because of lack of coverage, please let us know.  Sirens are tested at noon on the first Wednesday of the month unless severe weather is anticipated.  Please contact Randy Wiesner at rwiesner@cityofmadison.com if you or your constituents have any questions or comments on the warning sirens.   Please feel free to share this information with your constituents and neighborhood associations.

Rob


Robert Phillips, P.E.
City Engineer
rphillips@cityofmadison.com





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