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CW3E AR intensity forecasts
View a measure of atmospheric river (AR) intensity over the past 7-days and a forecast for the next 7-days.
NRCS Water Supply Forecast Plots
View charts of forecast streamflow volume and percent of normal streamflow for the current and previous water years. Forecasts are available for various gauge locations and are organized by basin. New forecasts are initialized on the first of each month.
NWRFC Apr-Sept Streamflow Natural Forecasts
View probabilistic forecasts of streamflow relative to normal for April-September of the current and previous water years at gauge sites all across Washington State. New forecasts are updated daily.
Pacific Decadal Oscillation
Plot the monthly Pacific Decadal Oscillation (PDO) index from 1854-Present. Click on “View Data” to view the numerical value of the PDO index for a given month.
Seasonal ENSO Forecasts
Explore probabilistic forecasts of ENSO (La Niña/El Niño) conditions over the next 10 months.
USBoR Teacup Diagrams
Click on “Yakima” or “Coulee” on the map to explore current reservoir levels and storage volumes in the Yakima Basin and Upper Columbia Basin. Click the “Graph of Total System Storage” link underneath the Yakima diagram to view a time series graph of current water year storage levels relative to both total “full pool” capacity and last year’s storage.
Climate Mapping for a Resilient Washington
Download maps, tables, graphs, and data of monthly, seasonal, and annual climate projections for a variety of key hazards and indicators.
NCEI Climate-at-a-Glance
Graph, rank, and map monthly, seasonal, and annual average temperature and precipitation from 1895-present. View long term changes at the state, county, and other levels.
Current Mountain Conditions (NRCS SWE Viewer)
View the current and historical snow water equivalent percent of median map, along with other variables, for the western United States from 1980-present
West Wide Drought Tracker
This tool allows the user to examine monthly time series and create maps of temperature, precipitation, or various drought indices (including Palmer Drought Severity Index and Standardized Precipitation Evapotranspiration Index) nationwide using PRISM data. Note: Requires creation of a free account for data access.
MRCC cli-MATE Tool
Access hourly, daily, monthly, and seasonal raw climate data, as well as rankings, thresholds, and graphics through for cli-MATE. This is a powerful tool that we highly recommend.
Climate Toolbox Seasonal Forecast Graphs
Explore experimental 7-month forecasts of monthly precipitation and temperature relative to historical (1991-2020) normals. Click on “set location” on the initial pop-up message and then enter “Washington State” in the GeoLocation box to view projections for Washington State.
UW Atmos Recent Timeseries Weather Observations across the NW
Plot real-time and historical weather conditions for various stations in WA, OR, ID, and BC. Data are available from 1996-present.
CIG Probabilistic SLR Tool
View maps and graphs of projected sea level rise on Washington shorelines out to the year 2150. This tool takes into account gradual land subsidence/uplift.
CIG Extreme Precipitation Tool
View projected changes in extreme precipitation metrics across the northwestern contiguous US and far southern B.C. Projections are available for different rainfall event durations (from 1 to 72 hours) and return intervals (from 2 to 100 years).