Weather Prediction Center

National Oceanic and Atmospheric Administration

Excessive Rainfall Forecast

This web page depicts the Excessive Rainfall Outlook (ERO). 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.

Proposed changes to the Excessive Rainfall Outlook | Please consider providing feedback on these proposed changes.

Map Overlays
CWAs		Counties
RFCs		FEMA Regions
States		NWS Forecast Zones
Urban Areas		ARTCC/FIR

Select Zoom Area:

Day 1 Excessive Rainfall Outlook
Valid 0100Z Tue Aug 18 2026 Through 1200Z Tue Aug 18 2026
Issued: 0032Z Tue Aug 18 2026
Forecaster: BANN
DOC/NOAA/NWS/NCEP/WPC

Excessive Rainfall Forecaster Discussion

Click to select feature < Prev Next >
Download Excessive Rainfall Outlooks in GIS Format KML: Day1\| Day2\| Day3\| Day4\| Day5 Shapefile: Day1\| Day2\| Day3\| Day4\| Day5 GeoJSON: Day1\| Day2\| Day3\| Day4\| Day5 ArcGIS REST Service: Day1\| Day2\| Day3\| Day4\| Day5

Change image opacity:

Excessive Rainfall Outlook Day 1 Static Image

Day 1 Excessive Rainfall Outlook
Outlook	Population Impacted	Area (Sq Mi) Impacted
Slight (At Least 15%)	3,864,288	38,188
Marginal (At Least 5%)	27,790,464	340,040

Weather Prediction Center National Oceanic and Atmospheric Administration

Weather Prediction Center

National Oceanic and Atmospheric Administration