You should never drive into flooded areas, as it only takes 18 inches of water to float a typical vehicle. Flooding has killed an average of 87 people per year, according to NOAA, making it the second most deadly weather-related hazard over the last 30 years, just behind heat.Īlmost half of all flash-flood deaths occur in motor vehicles. Heavy rainfall and flooding should be taken seriously. Additionally, these extremes generally took place during the summer months or early in the fall. Most of the Northeast has 24-hour rainfall extremes between 10 and 15 inches, with the exception being Massachusetts at 18.2 inches. Data is from the local Cooperative Observer Network, CoCoRaHS (Community Collaborative Rain, Hail and Snow Network) and several ASOS (Automated Surface Observing System) sites. Note: These files will be updated at 300 pm central time each day. This is because these areas are well-removed from ocean influences, including tropical storms and hurricanes, and have a rather dry climate overall. Not sure how much precipitation occurred in your area Amounts are listed and plotted below. For the entire United States, excluding Hawaii and Alaska. State-wide averages of annual rainfall plus snowfall range from a high of 63.7 inches (1618 millimetres) in Hawaii to a low of 9.5 inches (241 millimetres) in Nevada. For example, the most extreme 24-hour rainfall total on record in Utah is only 5.1 inches, the lowest of all 50 states. Below the tables theres a map that allows you to visually compare the annual average precipitation totals among states. Some of the lowest extreme rainfall totals are in the Northern Plains, Rockies and Great Basin. The exception there is South Carolina with a 24-hour extreme of 14.8 inches, observed at Myrtle Beach and associated with Hurricane Floyd on Sept. *Precipitation data includes measured rainfall and liquid equivalents for snow, sleet and hail.In the Southeast, the 24-hour rainfall extremes are mainly between 20 and 25 inches. At the high end Central Park’s rainfall average is 49.9 inches. At the low end the long term average for JFK Airport is 42.8 inches per year. However, NYC rainfall totals vary significantly by official measurement location. Monthly Precipitation Total for 2023 (sorted by county) Monthly Precipitation Total for 2022 (sorted by county) Monthly Precipitation Averages (1981-2010, sorted by county) Daily Regional Temperature and Precipitation Product Issued: 05:06:50 PM MST. New York City’s average annual precipitation is 46.6 inches. What is the average annual rainfall in New York City? New York Annual Precipitation by City NY Location In contrast, Old Forge snowfall can be as much as 35% of total annual precipitation. In New York City as little as 5% of total precipitation falls as snow. Individual pixels can change in value depending on this data. Both of these events caused devastating flooding.Īcross New York - snowfall - as a percentage of total annual precipitation varies widely. zip code boundaries, water lines, work orders, or other constructs, and can. Less than two weeks later, Tropical Storm Lee brought more heavy rainfall, with more than 12 inches of rain falling in the upper reaches of the Susquehanna River Basin. Much of eastern New York received more than 7 inches of rain from Hurricane Irene, with some locations in the Catskill measuring more than 18 inches. The state’s annual precipitation record set in 2011 was due, in part, to two extreme precipitation events in the summer of that year: Hurricane Irene and Tropical Storm Lee. Since 2010, New York has had an increase in the number of extreme events - days on which precipitation totals are more than two inches. The driest 5-year span was 1962–1966 with an average of 35.2 inches and the wettest was 2007–2011 with an average of 46.1 inches. The wettest stretches were during the late 1970s and the decade starting in 2005. The driest periods historically occurred in the late 1920s and in the 1950s. Statewide annual numbers have ranged from a low of 31.6 inches in 1964 to a high of 55.7 inches in 2011. This varies across the state by region, with the mountains receiving more than 50 inches per year. The NY precipitation average is just above 40 inches per year. NWS radar overlays for 24-168 hours represent a total ending at 12UTC on or before the indicated gage-data date. NWS radar overlays for 1-12 hours are generated once an hour at the end of the hour. What is the average annual rainfall in New York State? Precipitation gage data retrieved from NWISWeb: Novem01:01 EDT.
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