Rainfall & Flooding
WPC QPF forecast maps · Excessive Rainfall Outlook · Live NWS flood alerts
51 active flood alerts across the U.S.· 1 Flash Flood Warning
Quantitative Precipitation Forecast
Official NOAA/WPC rainfall totals — updated every 6 hours
ABOUT THESE MAPS
QPF (Quantitative Precipitation Forecast) maps show the expected total rainfall accumulation over a 24-hour period. The Excessive Rainfall Outlook (ERO) identifies areas where rainfall may exceed flash-flood guidance — the most critical life-safety product during tropical events. Colors range from light green (<0.25″) through yellow, orange, and red (>4″). During a hurricane, watch for the 3-day cumulative total — tropical systems can drop 10–20+ inches.
Active Flood Alerts
Live NWS alerts · refreshed every 5 min
Flash Flood Warnings (1)
Flood Warnings (36)
Flood Watches (9)
Other Flood Alerts (5)
Alert Severity
Flash Flood Warning— Imminent or occurring
Flood Warning— Flooding in progress
Flash/Flood Watch— Conditions favorable
Flood Advisory— Minor flooding possible
Hydrologic Outlook— Potential future flooding