New London Middlesex New Haven Fairfield Windham Tolland Hartford Litchfield

View Large Map

Welcome to Connecticut CoCoRaHS!

Coginchaug River at Wadsworth Falls in Middlefield CT

The Constitution State became the 45th state to join CoCoRaHS on July 1, 2009

We currently have 61 observers who have reported daily precipitation during April 2016.

More first time reports from Darien, Naugatuck, Hebron, Bristol, Crystal Lake, Vernon and another station in Westbrook.  On we grow!   We look forward to having more stations reporting soon.  

April 8 - 50 reports capturing widespread and variable precipitation.  Well done, everyone who was part of that.     

*** WANTED ***

We are in need of more observers in
 Fairfield, Middlesex, New Haven, and New London Counties.
 Sign up today!

 Join CoCoRaHS

Why CoCoRaHS?

We believe that precipitation is important and highly variable.
We believe that many other sources of precipitation data are not as accurate as ours.
We just happen to use low cost measuring tools and use the internet to make our reports.
If you believe what we believe, Join CoCoRaHS

One small measurement to make.  
One giant impact that measurement makes upon the millions that depend upon water.

Have Questions or Would Like More Information?

Contact Matt Spies, Connecticut State Coordinator,
Joe Dellicarpini, Southern New England Coordinator,
or contact one your Regional Coordinator listed below

Southern New England CoCoRaHS Newsletters
(Thanks to our Editor, Matt Spies, CT-FR-9)

Latest Newsletter: April, 2016: Apr2016SNE.pdf

Previous Newsletters:
March 2016:
February, 2016:  Feb2016SNE.pdf
January, 2016: Jan2016SNE.pdf
 December, 2015: Dec2015SNE.pdf
November, 2015: Nov2015SNE.pdf
October, 2015: Oct2015SNE.pdf
September, 2015:  Sep2015SNE.pdf
August, 2015:  Aug2015SNE.pdf

#TBT: See How Far  We've Come?
Check out an older newsletter from Fall, 2012: SNE CoCoRaHS Fall 2012.pdf
SWE Measurement from 2009:   SWE Measurement.pdf
October 2009:  October 2009.pdf
January 2010:  January 2010.pdf
May 2010:  May 2010.pdf
Summer 2011:  Summer 2011.pdf
Summer 2012:  Summer 2012.pdf

Snowfall Reporting 
One page guide:  Snow&SleetReporting.pdf

What Do I Need to Join?

We strongly encourage you to purchase a 4" diameter clear plastic rain gauge.
This will ensure that the data collected by CoCoRaHS observers are consistent through the nationwide network of observers, 

The rain gauge costs $30 plus shipping and may be purchased at:

Observer training can be accomplished by slideshows or by YouTube videos

Once you sign up, you will receive a login and password.
After you have a rain gauge and begin making observations, you can log in and report them.
Your precipitation observations will appear on our maps.

How Is CoCoRaHS Data Used in Connecticut?

Some users of CoCoRaHS data include the National Weather Service (NWS), State and Local agencies, the media, and the public. For example, the NWS Northeast River Forecast Center uses daily precipitation data to supplement precipitation analyses, which are used to help predict river flows throughout the region. NWS Albany NY, Upton NY (New York City), and Taunton MA (Boston) use the data for drought analysis, post-event reviews, and to assist with the issuance of Flood Watches and Flood Warnings.  The National Operational Hydrologic Remote Sensing Center (NOHRSC) uses reports from Connecticut observers to determine the impact of snow on the state's watersheds.

Did You Know???

Connecticut averages between 40 and 50 inches of precipitation each year
Record for 24 hour rainfall: 12.77 inches in Burlington, Aug 19, 1955
Record maximum annual precipitation: 78.53 inches in Burlington, 1955
Record minimum annual precipitation: 23.60 inches in Baltic, 1965

Contact Matt Spies, Connecticut State Coordinator,
Joe Dellicarpini, Southern New England Coordinator,
or contact one your Regional Coordinator listed below

Connecticut CoCoRaHS Regional Coordinators

Northwest:  John Quinlan
Northeast:  Bill Simpson
Southern:  Tim Morrin

 Connecticut CoCoRaHS is a collaboration between:
 Colorado State University, National Weather Service Offices in Albany, New York City, and Taunton, and the Connecticut Department of Emergency Management and Homeland Security