Your agency's newsletter can be linked here- please let us know if you produce one!

General Drought Information
Latest West
Drought Monitor
The US Drought Monitor is updated weekly and is a synthesis of multiple indices and impacts that represents a consensus of federal and academic scientists. The US Drought Monitor is produced in partnership between the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, and the National Oceanic and Atmospheric Administration. Map courtesy of NDMC-UNL.
Latest Nevada
Drought Monitor
The US Drought Monitor is updated weekly and is a synthesis of multiple indices and impacts that represents a consensus of federal and academic scientists. The US Drought Monitor is produced in partnership between the National Drought Mitigation Center at the University of Nebraska-Lincoln, the United States Department of Agriculture, and the National Oceanic and Atmospheric Administration. Map courtesy of NDMC-UNL.
Palmer Drought Severity
Index (PDSI)
The Palmer Drought Severity Index (PDSI) map from the Westwide Drought Tracker is updated monthly. PDSI is based on a simplified water budget that considers temperature, precipitation, and soil moisture data to determine the accumulated water excess or deficit. Negative values (yellow and red shades) show abnormal dryness to extreme drought. Positive values (shades of blue and green) indicate an excess of precipitation in an area.
Vegetation Drought
Response Index
VegDRI is updated bi-weekly and is a depiction of vegetation stress across the contiguous United States. The index is calculated using fine resolution satellite data combined with climate and biophysical data. Multiple factors such as climate, pests, land use change, fire, and extreme weather events can influence vegetation conditions, so including climate and biophysical data helps distinguish stress due to drought.
Departure from
Average Greenness
Departure from average greenness (DAG) maps are updated weekly using data from AVHRR satellite observations at a resolution of 1.1 km (0.6 mi). These maps portray how green each pixel of the image is compared to its average greenness for the current week of the year based on 1989-2003 data. Factors such as cloudiness, snow smoke, or haze can reduce the data quality.
Current Weather and Satellite Imagery
Southwest Radar
Mosaic
A mosaic of radar images from throughout the Southwest. Base reflectivity indicates the amount of energy reflected back to the radar by target objects, in this case, rain, hail, snow or large cloud droplets. The amount of energy reflected back is an indicator of precipitation intensity, with yellow and red colors indicating more intense precipitation.
Current Weather
Forecast
Daily updated one-day weather forecast for the US created by NOAA based on results of several weather forecast models.
GOES West
Infrared
Updated every 30 minInfrared satellite images are used to observe cloud top temperature. Colder cloud tops (blue shades) are generally indicative of deeper clouds with lots of vertical motion that are likely to bring heavy precipitation if suffiecient moisture is present. Warmer cloud tops (white or grey) are generally lower or thinner clouds that are not likely to produce heavy precipitation. The relatively warm land surface appears as black. Warm desert areas sometimes appear in red.
GOES West
Water Vapor
Updated every 30 min.Water vapor satellite images help to indicate the amount of moisture present in the atmosphere. Orange-brown shades indicate dry conditions while white and blue shades indicate higher amounts of water vapor. The presence of water vapor in the atmosphere is necessary for cloud formation and precipitation.
GOES West
Visible
Updated every 30 min.Visible satellite images are used for observing the locations and formations of clouds and storm systems. Since light in the visible portion of the spectrum is not present when the sun is down, these images are all black at night.
Average Temperature Departure from Normal
Updated daily. Departure of average temperature from the 1981-2010 NCDC normal for the given time period.
Last 7 days Last 30 days Last 90 days Water Year
(since Oct 1)
Last 12 months
Precipitation Percent of Normal
Updated daily.Percent of the 1981-2010 NCDC normal percipitation value at each station for the given time period.
Last 7 days Last 30 days Last 90 days Water Year
(since Oct 1)
Last 12 months
NWS Observations, Normals, and Records for Current Water Year
Updated daily.Station-based climate information for various locations in the Great Basin. Extreme high and low temperature records for a day of the year are indicated by the blue and red bars. The normal range is shown in green. For precipitation, normal annual accumulations are shown in light green. Actual water year-to-date precipitation is shown in mint green. The deficit between the two is shown in brown.
Reno, NV Elko, NV Salt Lake City, UT Boise, ID Las Vegas, NV
Standardized Precipitation Index (SPI)
Updated daily. Standardized Precipitation Index (SPI) is a probability index that considers only precipitation. The SPI is an index based on the probability of recording a given amount of precipitation, and the probabilities are standardized so that an index of zero indicates the median precipitation amount (half of the historical precipitation amounts are below the median, and half are above the median). The index is negative for drought, and positive for wet conditions.
Last 30 days Last 60 days Last 90 days Water Year
(since Oct 1)
Last 12 months
Snotel Basin Snowpack Summary Time Series
Updated daily. Time series of snow water equivalent in inches for current water year, the past three water years, and the median of water years 1981-2010. Updated daily, and based on provisional SNOTEL data.
Upper Humboldt
Basin
Lower Humboldt
Basin
Truckee River
Basin
Walker River
Basin
Eastern Nevada
NRCS Snotel Basin Graphics
WY to Date Precipitation
% of Normal
Percent of 1981-2010 average precipitation by basin for the water year to date. Updated daily.
Current % of Normal
Snow Water Equiv.
Snow water equivalent (SWE) percent of normal by basin based on 1981-2010 average. This product is updated daily with data from NRCS SNOTEL stations, and may not have data available in some locations in the summer and fall months.
Month to Date % of
Normal Precipitation
Precipitation percent of normal by basin based on 1981-2010 average. This product is updated daily with data from NRCS SNOTEL stations.
Monthly Snowpack % of
1871-2010 Median
Updated 10th of month Jan-May. Percent of 1871-2010 median of mountain snowpack by basin. Produced monthly Jan-May only.
Other Hydrologic Information
N. Sierra 8-Station
Cumulative Precip.
Updated daily. Cumulative precipitation for northern Sierra 8-Station Index for current water year, past two water years, average, two driest years and wettest year on record.
Real-Time
Streamflow
Real time. This map shows real-time stream flow in the Great Basin. Yellow to red shades represent below normal stream flow, with bright red less than 10th percentile. Green shows normal flow in the 25-75th percentile. Shades of blue indicate above normal, and black represents the highest flows, greater than 90th percentile. This real-time stream flow map is meant to highlight flood and high flow conditions.
7-day Average
Streamflow
Updated daily. This map shows 7-day average stream flow in the Great Basin. Yellow to red shades represent below normal stream flow, with bright red less than 10th percentile. Green shows normal flow in the 25-75th percentile. Shades of blue indicate above normal, and black represents the highest flows, greater than 90th percentile. The 7-day stream flow map is used to highlight below-normal and drought conditions, rather than flood conditions.
28-day Average
Streamflow
Updated daily. This map shows average stream flow for the past 28 days in the Great Basin. Yellow to red shades represent below normal stream flow, with bright red less than 10th percentile. Green shows normal flow in the 25-75th percentile. Shades of blue indicate above normal, and black represents the highest flows, greater than 90th percentile. The 28-day stream flow map is used to highlight below-normal and drought conditions, rather than flood conditions.
Reservoir
Storage
Updated JAN-MAY 10th of each month. This graph from NRCS shows monthly reservoir storage as compared to capacity and average for states in the western US. The graph is updated each month January-May.