Major Winter Storm to Impact the Mid-Atlantic and Northeast; Inclement Weather in the Pacific Northwest

A major winter storm is expected to bring heavy snow, strong winds, and coastal flooding across the Mid-Atlantic and Northeast that may cause impossible travel conditions and power outages. Blizzard conditions are possible along the Northeastern Seaboard. Wet weather and strong winds return to the Pacific Northwest and north-central California. Read More >

Current Hydrologic Conditions

National Water Prediction Service (NWPS): The NWS GIS-based mapper for stream levels, forecasts, gridded precipitation data, flood impact statements and categories, and flood-inundation mapping.
USGS National Water Dashboard
USGS Water Alert: Get notifications for changes in stream levels at any USGS streamgauge site based on thresholds you choose.
USGS Rain Gauge Accumulation Maps w/ NWS Radar Estimate Overlay

Georgia | North Carolina | South Carolina

Current Hydrologic Hazard Products

Current Flood Watches: Issued when Minor, Moderate, and/or Major flooding of numerous creeks and streams is expected to develop sometime over the next 24-48 hours.
Current Flash Flood Warnings: Issued when rapid rises on one or more streams is expected to imminently cause Minor, Moderate, or Major flooding, creating a serious threat to life and property. Flash flooding is expected to occur within 6-8 hours from the initial stream response to heavy rainfall and last for less than 6-10 hours once Minor Flood Stage is reached.
Current River Flood Warnings: Issued when Minor, Moderate, or Major flooding is imminent or ongoing along stream reaches with forecast services available.
Current Flood Warnings: Issued when slower and steady rises on one or more streams is expected to imminently cause Minor, Moderate, or Major flooding, creating a serious threat to property. The flooding is expected to last well beyond the causative rain event, typically persisting for 10-36 hours once Minor Flood Stage is reached.
Current Flood Advisories: Issued when slow or rapid rises on one or more streams are expected to cause the stream to exceed bankfull and cause nuisance flooding of adjacent low-lying areas.

Lake Levels

USACE: Lake Hartwell, Richard B. Russell Lake, and Lake Thurmond
Duke Energy: Tuckasegee River Lakes, Nantahala Lake, Catawba River Lakes, Keowee-Toxaway Lakes
Georgia Power: Tallulah River System Lakes