![]() ![]() Rainfall totals are included for the latest day, week, month-to-date, month, 3 months, 6 months, 9 months, year, 2 years, and 3 years. USGS watershed Multi-page format with USGS primary basins as columns, each year as a row, and each time period on a separate tab. Go to the NEW rainfall totals page The new rainfall totals page includes mobile friendly maps, and tables that can be sorted, searched and the data downloaded.USGS watershed (matrix) Single-page format with USGS primary basins as columns and months/years as rows. The Daily Precipitation map shows the amount of precipitation that has accumulated within the last 24 hours. San Francisco, CA warning52 ☏ Mostly Cloudy Manhattan, NY 54 ☏ Fair Schiller Park, IL (60176) warning48 ° Cloudy Boston, MA 51 ° Clear Houston, TX 72 ° Partly Cloudy Cloudy Popular Cities Elev 56.District region Multi-page format with District regions as columns, each year as a row, and each time period on a separate tab.District region (matrix) Single-page format with District regions (North, Central, South) as columns and months/years as rows.County Multi-page format with District counties as columns, each year as a row, and each time period (i.e., month) on a separate tab.County (matrix) Single-page format with District counties as columns and months/years as rows.Other, more frequent, observations are also made at some sites. The precipitation imagery displays precipitation estimates in colorized contoured bands. Observations of daily rainfall are nominally made at 9 am local clock time and record the total precipitation for the preceding 24 hours. The Weekly Precipitation map shows the amount of precipitation that has accumulated within the last 7 days. Read about the summary statistic calculation procedure here. Rainfall: Precipitation is most often rain (hence the common term), but also includes other forms such as snow. Each page within a spreadsheet shows period-of-record rainfall totals in inches (based on area-weighted average values) for 1915 through the previous calendar year by month, wet season, dry season, calendar year, or water year. Our 5-Day Precipitation Outlook feature displays an interactive map prediction of upcoming rain, snow, ice, and mixed precipitation over time for day/night periods within the next 5 days. Summaries are tabulated by specific geographic areas, such as county or drainage basin boundaries, for that portion of the geographic area within SWFWMD boundaries. For example, if the brown or below average category is greatest for any given day, then that indicates most of the state was observing below average precipitation.Rainfall summaries are available as spreadsheets for downloading to your computer. It is calculated by counting the number of grid cells in each anomaly category (e.g. below or above average) each day and then dividing it by the total number of grid cells for Arizona. Higher values indicate a longer time period or break since at least light rainfall was observed.ĭaily change in precipitation anomaly coverage: This figure depicts the daily change in the coverage of different categories of precipitation anomalies or differences from average. Coloring is based on the legend at the bottom-left of the map. ![]() Totals are given in units of inches, with trace values being represented as a value of T. A high value indicates that most of the total precipitation came in a small number of large or intense events.ĭays since 0.05" rain event: This map indicates the number of days since at least a precipitation amount of 0.05" was observed in each data grid cell. Precipitation Totals - Interactive Map MesoWest Precipitation Totals This page displays precipitation totals calculated from weather station data. Please check timestamps in bottom right of each image. Shown below is an interactive map that provides near real time rain fall data. ( Seasonal Average Total Precipitation)ĭaily intensity index: This index is the simple ratio between the total precipitation over the time period and the number of days observing rain with units in ‘inches/day’. Observed Precipitation Maps These maps should update daily by mid morning. These rain gauges continuously record precipitation data on a 5-minute interval. 100% is equal to average for the time period shown on the map. Percent of average precipitation: Percent of average is calculated by dividing the total accumulated precipitation by the long-term (1991-2020) mean and is an indication of how much totals have deviated from average precipitation for the June 15th to present period. ![]()
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