At CoCoRaHS Headquarters, we value everyone’s right to free speech. To read about the first 20 years of CoCoRaHS click here: HistoryĬoCoRaHS values the diversity of the group of individuals that makes up our volunteer network. Please join us as we celebrate twenty years. With a few observers along Colorado's Front Range, we had no idea that the network would become what it is today, with over 24,000 active observers in the United States, Canada, Puerto Rico, the U.S. If none are taking place at the current time, watch our YouTube animations or Training Slide Shows and read our on-line training information.ĬoCoRaHS officially began on June 17, 1998. Please check out your state page for a list of current training sessions in your local area. Ĭomplimentary training is provided to help you become an effective weather observer.
If you would like to sign-up as a volunteer observer and become part of our expanding network, please click here: " Join the CoCoRaHS Network ". Our Web page provides the ability for our observers to see their observations mapped out in "real time", as well as providing a wealth of information for our data users.įor more information, please click here: Information about CoCoRaHS The only requirements to join are an enthusiasm for watching and reporting weather conditions and a desire to learn more about how weather can affect and impact our lives. By using low-cost measurement tools, stressing training and education, and utilizing an interactive Web-site, our aim is to provide the highest quality data for natural resource, education and research applications. Your observations continue to give scientists an ever clearer picture of where and how much precipitation falls throughout our communities.ĬoCoRaHS (pronounced KO-ko-rozz) is a grassroots volunteer network of backyard weather observers of all ages and backgrounds working together to measure and map precipitation (rain, hail and snow) in their local communities. It's easy to join, takes only five minutes a day and is a fun way to learn about this wonderful natural resource that falls from the sky. If you get the chance, please take a moment to tell a friend or neighbor about this exciting grassroots effort of citizens measuring precipitation right in their own backyards. How often have you seen it rain in your neighborhood and a few blocks away not a drop has fallen. The saying " Rain doesn’t fall the same on all" really proves to be true. Know someone in Guam who might like to participate in measuring precipitation? To sign up just go to join CoCoRaHS, then click on United States and pull up Guam from the state field when you register. Snowstorms that severe show up every few years on average, usually in December, January or February.Reports received today as of 1:08 AM EDTĬoCoRaHS has recently expanded across the Pacific Ocean to the Island of Guam which is part of the Mariana Islands in the Western Pacific. But major blizzards which dump ten inches or more in one day are rare events for NYC. Snowstorms of over five inches a day normally occur once or twice a year. For seven days a year on average, the amount of new snow totals at least an inch. How Many Snowstorms New York City GetsĪbout half the days of snowfall in New York City result in just a skiff of less than an inch left on the ground. New York City is normally free of snow every year from May to September.
The season's last snowfall typically happens in March, although unusually late snow has been known to appear in April. In one exceptional autumn, on October 29, 2011, a record-setting snowstorm blanketed Central Park in 2.9 inches of fresh snow. New York City's first snowfall of winter usually arrives in December, while in rare years an early snowfall shows up in November. When New York City Has Its First & Last Snowfalls
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