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Welcome to Connecticut CoCoRaHS!

Falls Village CT, on the Housatonic River.

** We currently have 148 observers who reported daily precipitation during April 2024.   **

Welcome to all of our new observers. 

April 2024 averaged 124 Daily Reports per day. 

*** WANTED ***

We strive to have an observer in every city and town in Connecticut.

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: December 2021: 

Previous Newsletters:

November 2021:  Nov2021SNE.pdf

October 2021:  Oct2021SNE.pdf

September 2021:  Sep2021SNE.pdf

August 2021:  Aug2021SNE.pdf

July 2021:  Jul2021SNE.pdf

June 2021:  Jun2021SNE.pdf

May 2021:  May2021SNE.pdf

April 2021:  Apr2021SNE.pdf

March 2021:  Mar2021SNE.pdf

February 2021:  Feb2021SNE.pdf

January 2021:  Jan2021SNE.pdf

December 2020:  Dec2020SNE.pdf

November 2020:  Nov2020SNE.pdf

October 2020:  Oct2020SNE.pdf

September 2020:  Sep2020SNE.pdf

August 2020:  Aug2020SNE.pdf

July 2020:  Jul2020SNE.pdf

June 2020:  Jun2020SNE.pdf
May 2020:  May2020SNE.pdf
April 2020:  Apr2020SNE.pdf
March 2020:  Mar2020SNE.pdf
February 2020:  Feb2020SNE.pdf
January 2020:  Jan2020SNE.pdf
December 2019:  Dec2019SNE.pdf
November 2019:  Nov2019SNE.pdf
October 2019:  Oct2019SNE.pdf
September 2019:  Sep2019SNE.pdf
August 2019: 
July 2019:  July2019SNE.pdf
June 2019: 
May 2019:  May2019SNE.pdf
April 2019:  Apr2019SNE.pdf
March 2019:  Mar2019SNE.pdf
February 2019: 
January 2019: 
December 2018: 
November 2018:  Nov2018SNE.pdf
October 2018:  Oct2018SNE.pdf
September 2018:  Sep2018SNE.pdf
August 2018:  Aug2018SNE.pdf
July 2018:  Jul2018SNE.pdf
June 2018:  
May 2018:  
April 2018:  
March 2018:  Mar2018SNE.pdf
February 2018:  Feb2018SNE.pdf
January 2018:  Jan2018SNE.pdf
December 2017:  Dec2017SNE.pdf
November 2017:  
October 2017:  Oct2017SNE.pdf
September 2017:  
August 2017: Aug2017SNE.pdf
July 2017: Jul2017SNE.pdf
June 2017: June2017SNE.pdf
May 2017: May2017SNE.pdf
April 2017: Apr2017SNE.pdf
March 2017: Mar2017SNE.pdf
February 2017: Feb2017SNE.pdf
January 2017: Jan2017SNE.pdf
December 2016:  Dec2016SNE.pdf
November 2016:  Nov2016SNE.pdf
 October 2016:  Oct2016SNE.pdf
September 2016:  Sep2016SNE.pdf
August 2016:  
 July 2016:  Jul2016SNE.pdf
June 2016: Jun2016SNE.pdf
May 2016:  May2016SNE.pdf
April 2016:  Apr2016SNE.pdf
March 2016:  Mar2016SNE.pdf
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:  

#TBT: See How Far  We've Come?

Summer 2009:  Summer 2009.pdf
October 2009:  October 2009.pdf
January 2010:  January 2010.pdf
May 2010:  May 2010.pdf
Summer 2011:  Summer 2011.pdf
Winter 2011: Winter2011.pdf
Summer 2012:  Summer 2012.pdf
Fall 2012: Fall 2012.pdf

Snowfall Reporting 
Two page guide:  Snow&SleetReporting.pdf
SWE Measurement from 2009:   SWE Measurement.pdf

/Media/Docs/CT/Multi-Day Accumulationsv2 - reporting.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 $42 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.

24-Hour Precipitation Reports Ending Around 7 AM

Snow Guide:  Snow Guide

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


Deanna Marks, Christina Speciale
ETEC - National Weather Service
1400 Washington Avenue
Albany, NY  12222


Joe Dellicarpini
National Weather Service Forecast Office
46 Commerce Way
Norton, MA  02766
508-622-32503 x224



Joe Pollina, Timothy Morrin
National Weather Service
175 Brookhaven Ave. Bldg. NWS-1
Upton, NY 11973
631-924-0037 x225


 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