Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

A strong atmospheric river will bring heavy rainfall to California through the holiday week. The heaviest rainfall is expected on Wednesday in the Los Angeles Basin. Flash and urban flooding is possible. A prolonged heavy snowfall is expected in the Sierra Nevada from the atmospheric river, raising concerns for major snow‐load impacts. Travel may be difficult to impossible over the passes. Read More >

Water Supply Forecasts and Information for Oregon and the Pacific Northwest

Latest Water Supply Outlook for Oregon (PDF)
(summary of precipitation, snowpack, reservoirs, water supply forecasts, and peak flow forecasts)

Latest Drought Information Statement for NW Oregon & SW Washington (PDF)
(summary of precipitation, temperatures, streamflow, reservoirs, and drought impacts)

Water Supply Forecasts:

Columbia Basin Water Supply (NOAA/NWS Northwest River Forecast Center)
Water Supply Products (USDA/NRCS Nat'l Water and Climate Center)

Precipitation:

Seasonal Precipitation Map for the PacNW (NOAA/NWS Northwest River Forecast Center)
SNOTEL Precipitation Reports (USDA/NRCS Nat'l Water and Climate Center)

Snowpack:

Interactive Maps of Snow Data (NOAA/NWS Remote Sensing Center)
Snow Conditions for the PacNW (NOAA/NWS Northwest River Forecast Center)
Western U.S. Snowpack Products (USDA/NRCS Nat'l Water and Climate Center)
Oregon SNOTEL Data (USDA/NRCS Nat'l Water and Climate Center)

Reservoirs:

Tea-Cup Diagram for Lower Columbia Dams
Tea-Cup Diagram for Willamette Valley USACE Reservoirs
Tea-Cup Diagram for SW Oregon USACE Reservoirs
Tea-Cup Diagram for PacNW Reservoirs (US Bureau of Reclamation)

PQR RSS Feed

Heavy Rainfall to Bring Flooding Threat to California; Heavy Snow in the Sierra

PQR Water Supply Forecasts and Information

Water Supply Forecasts and Information for Oregon and the Pacific Northwest