Hail Pad

Boulder, CO Scientists Hail Study

Mother nature is notorious for delivering some of the most destructive forms of natural disaster on the planet. Of all these forms, hail is one of the least studied forms of destruction. Denver meteorologist, Chris Spears, recently wrote a very compelling story about  this spectacular form of fury. Before social media, law enforcement departments have been one of the only ways local hailstorms are relayed. Social media has become one of the most useful methods of public awareness in the history of weather phenomenons, such as hail. Boulder, Colorado scientists have begun to focus their hail predicting efforts using social media.

Short-Term Explicit Prediction (STEP)

Boulder scientists refer to this real-time weather experiment program as STEP. This experiment will be running until August 15. The goal is to better predict the path of these Colorado hail storms. Through a partnership with the Community Collaborative Rain, Hail and Snow Network, volunteers of the CoCoRaHS network will place a “hail pad” in their yards to collect information about hail. The “hail pad” can be easily constructed with everyday household items. A piece of styrofoam is covered with heavy duty aluminum foil. The indentations caused by the hail can tell scientists a lot of information about the hail storm that has passed through their area.

Denver Metro Region Community Collaborative Rain, Hail and Snow Network

Local CoCoRaHS networks for Adams, Arapahoe, Broomfield, Denver, Douglas, Jefferson.

If you are interested in participating, here are a few useful links.

Chad GimmestadDenver Metro Regional Coordinator (Temporary)
National Weather Service
Denver/Boulder, CO Weather Forecast Office
325 Broadway
Boulder, CO 80305-3328
Phone: 303-494-4221
email: [email protected]

Adams County

Thaddeus Gourd
Extension Agent for Adams County
9755 Henderson Road
Brighton, CO 80601-8114
Office Phone 303-637-8117
Fax 303-637-8125
[email protected]

Arapahoe County

Volunteer coordinator needed.
If interested, please contact Zach at [email protected]

Broomfield County

Matt Kelsch
Boulder, CO
[email protected]

Denver County

Volunteer coordinator needed.
If interested, please contact Zach at [email protected]


Douglas County

Volunteer coordinator needed.
If interested, please contact Zach at [email protected]

Jefferson County

Jason Whitson
Westminster, CO
[email protected]

Roy Laws – Supplies
Jefferson County Health Dept.
645 Parfet Street
Lakewood CO 80215
303-619-5114 (cell phone)

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