Extremely heavy rain advisory today. US Dept of Commerce National Oceanic and Atmospheric Administration National Weather Service 1325 East West Highway Silver Spring, MD 20910 Comments? Questions? Please Contact Us. Get accurate hourly forecasts for today, tonight, and tomorrow, along with 10-day daily forecasts and weather radar for Mariano-Melgar, Arequipa with MSN Weather. In the ERO, the Weather Prediction Center (WPC) forecasts the probability that rainfall will exceed flash flood guidance (FFG) within 40 kilometers (25 miles) of a point. . Interactive map showing weather watches, warnings, and weather advisories issued by the National Weather Service, including a national radar overlay with animation option. AccuWeather's Severe Weather Map provides you with a bird's eye view of all of the areas around the globe experiencing any type of severe weather. Follow along with us on the latest weather we're watching, the threats it may bring and check out the extended forecast each day to be prepared. This web page depicts the Excessive Rainfall Outlook (ERO). You can find the forecast for the days ahead in Heavy Rain: 24-hour accumulated rainfall exceeds 80 millimeters, or 1-hour rainfall exceeds 40 millimeters. Extremely Heavy Rain: 24-hour accumulated rainfall exceeds 200 millimeters, or 3-hour accumulated rainfall exceeds 100 millimeters. kdgg axqnet nyauew hcclj wdiu dghw njz decjma wwii ubak