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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.
GOES Lightning Satellite Viewer
View a map of real-time satellite imagery and lightning activity across the northwestern contiguous United States. Data is available from the present and the most recent 20 hours. Data is updated every 5 minutes.
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.
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 Accumulated Growing Degree Days
View high resolution maps of the accumulated growing degree days (base 32, 41, and 50°F) for the current season. Differences from historical averages are also available.
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.
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.
Community Collaborative Rain, Hail, and Snow Network (CoCoRaHS)
View a map of daily precipitation, snowfall, and snow depth measurements from a large and growing network of backyard weather stations. Observers began taking measurements in WA state in June of 2008, and observations are updated daily.
U.S. Drought Monitor
A weekly map synthesis of various drought indicators to classify drought into different percentile categories from 2000-present. Also view seasonal outlooks using the “Conditions & Outlooks” tab.
Climate Toolbox Climate Mapper
Maps of recent, gridded conditions, as well as monthly and seasonal forecasts and long term climate projections on a seasonal and annual time scale.
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.
Wind Rose Diagrams
View monthly wind roses (diagrams showing the frequency of average wind direction and speed at a given location) for ASOS (airport) stations across Washington State. This tool also allows the user to download raw data and choose a custom time period to plot as well.
U.S. Freeze Maps
Freeze climatology maps, current season freeze information, and growing degree days, from 1991-present.