Drought.gov Data Download (GIS and Web-Ready)

Standardized Drought Indices generated from Climate Engine

Drought.gov operates an operational version of the Climate Engine API, which is a cloud-based climate focused data processing tool based on Google Earth Engine and the NOAA Open Data Dissemination (NODD) program.  Drought.gov is using Climate Engine to produce hundreds of drought indices each day, based on multiple leading foundational datasets from NOAA, NASA, and other partners. These indices are standardized to use the same climate reference period (1991-2020), distribution fittings and potential evapotranspiration methodologies. The data is updated daily and available in both GeoTIFF and web-map-ready XYZ tile formats.

Drought.gov provides overview pages to compare these products, and explore the differences between each foundational dataset:  Precipitation / Percent of Normal Precipitation / SPI / SPEI / EDDI

GeoTIFF Download:

Dataset	Precipitation	Percent of Normal Precip.	Max Temperature Departure from Normal	SPI	SPEI	EDDI	Coverage and Resolution	Latency
nClimGrid-Daily	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	ConUS 4km	4-6 days
ACIS "Grid 1"	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	ConUS 4km	3-5 days
CPC Daily ConUS Precip.	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	Precip. Only	1-Month, 2M, 3M, 6M, 9M, 12M	Precip. Only	Precip. Only	ConUS 25km	3-5 days
PRISM	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	ConUS 4km	3-5 days
GridMET	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	ConUS 4km	3-5 days
CPC Daily Unified	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	Global 0.5 deg	4-6 days
ERA5 (Global)	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	1-Week, 2W, 1-Month, 2M, 3M, 6M, 9M, 12M	Global 30km	5-7 days
CMORPH	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	Precip. Only	1-Month, 2M, 3M, 6M, 9M, 12M	Precip. Only	Precip. Only	Global  8km	2-4 days
GPM IMERG	1-Month, 2M, 3M, 6M, 9M, 12M	1-Month, 2M, 3M, 6M, 9M, 12M	Precip. Only	1-Month, 2M, 3M, 6M, 9M, 12M	Precip. Only	Precip. Only	Global 10km	2-4 days

 

Map Tiles available for direct integration:

GIS mapping tiles are available following the 'XYZ' tile specifications, which may be directly integrated into GIS web applications, apps and desktop tools.  The following URLs are templates which use the ..../${z}/${x}/${y}.png convention for representing the pyramid of tiles.  To obtain the 'XYZ' tile URL template, use the GeoTIFF download links listed above and replace the GeoTIFF filename with '{z}/{x}/{y}.png' (Example). Tiles are currently created for zoom levels of 1-5.

 

 

 

Partner Data

Drought.gov processes data from multiple partners. These data are summarized into the web-ready formats, map layers and statistics shown throughout Drought.gov. The data are available from NOAA's National Centers for Environmental Information (NCEI) and the NOAA Open Data Dissemination program, which promotes reuse of the data and provides public access to these data from Google Cloud Storage.

The URLs provided below are for the NOAA/NCEI directory and download locations.

• To download JSON files from the public endpoint in Google Cloud Storage, replace 'https://www.ncei.noaa.gov/pub/data/nidis/geojson/' with 'https://storage.googleapis.com/noaa-nidis-drought-gov-data/current-conditions/json/v1/' in the specific file download URL.  This will not work for listing directories.
• To download map tiles from the public endpoint in Google Cloud Storage, replace 'https://www.ncei.noaa.gov/pub/data/nidis/tile/' with 'https://storage.googleapis.com/noaa-nidis-drought-gov-data/current-conditions/tile/v1/' in the specific file download URL.  This will not work for listing directories.
• To view a file directory containing multiple data files from the public endpoint in Google Cloud Storage, replace 'https://www.ncei.noaa.gov/pub/data/nidis/geojson/' or 'https://www.ncei.noaa.gov/pub/data/nidis/tile/' with 'https://console.cloud.google.com/storage/browser/noaa-nidis-drought-gov-data/current-conditions/json/v1' (JSON files) or 'https://console.cloud.google.com/storage/browser/noaa-nidis-drought-gov-data/current-conditions/tile/v1/' (map tiles), respectively.  
  Logging in with a Google account is required to use the storage browser.  However, logging in is not required for public file access using the URLs that begin with 'https://storage.googleapis.com/noaa-nidis-drought-gov-data/'.

Jump to: JSON Files | Sector-Specific Data | Map Tiles | Foundational Temperature and Precipitation Datasets

 

JSON / GeoJSON / TopoJSON Files

General statistics are available in the JSON format. Point/line/polygon GIS data are available in the GeoJSON and TopoJSON formats. The file info.json contains the valid date in the JSON format.

Advanced Hydrologic Prediction Service (AHPS) River Observations and Forecasts - File Directory

• Timescales: 1, 2, 3, 4, 5, and 6-day forecasts; maximum flood category forecasts; current observations
• Processing Frequency: Daily
• Geographic Coverage: U.S., Puerto Rico
• Source: NOAA National Weather Service

AirNow Air Quality Index (AQI) - File Directory

• Processing Frequency: Daily
• Geographic Coverage: U.S.
• Source: Environmental Protection Agency

Apalachicola-Chattahoochee-Flint (ACF) and Alabama-Coosa-Tallapoosa (ACT) River Basin Data - File Directory

• U.S. Army Corps of Engineers Lake Levels and Forecasts: ACF and ACT River Basins 
  • Timescales: Current levels, 1-week forecast
  • Processing Frequency: Daily (current levels), weekly (forecasts)
  • Geographic Coverage: ACF and ACT River Basins
  • Source: U.S. Army Corps of Engineers
• ACF River Basin Statistics (precipitation rankings, U.S. Drought Monitor conditions, USDA disaster designations) - File Directory
  • Timescales: Monthly, calendar year to date (precipitation rankings); weekly (U.S. Drought Monitor)
  • Processing Frequency: Weekly
  • Geographic Coverage: ACF River Basin
  • Sources: NOAA/NCEI; National Drought Mitigation Center; U.S. Department of Agriculture

Billion-Dollar Weather and Climate Disasters - File Directory

• Period of record: 1980–present
• Processing Frequency: Quarterly
• Geographic Coverage: U.S.
• Source: NOAA/NCEI

Coastal Salinity Index - File Directory

• Timescales: 1, 2, 3, 6, 9, 12, 18, 24-month
• Processing Frequency: Daily
• Geographic Coverage: Southeast U.S.
• Source: U.S. Geological Survey

Climate Prediction Center (CPC) Outlooks – File Directory

• Temperature & Precipitation Outlooks
  • Timescales: 6–10 day, 8–14 day, 1 month, 3 month
  • Processing Frequency: Daily (6–10 day, 8–14 day), monthly (1 month, 3 month)
  • Geographic Coverage: Contiguous U.S., Alaska
  • Source: NOAA Climate Prediction Center
• U.S. Drought Outlooks
  • Timescales: 1 month, seasonal (3 month)
  • Processing Frequency: Monthly
  • Geographic Coverage: U.S., Puerto Rico
  • Source: NOAA Climate Prediction Center
• CPC Outlooks by State – File Directory
  • Timescales: 1 month, 3 month
  • Processing Frequency: Daily
  • Geographic Coverage: U.S., Puerto Rico (temperature/precipitation outlooks not available for HI and PR)
  • Source: NOAA Climate Prediction Center
• CPC Outlooks by HUC2 Watershed – File Directory
  • Timescales: 1 month
  • Processing Frequency: Monthly
  • Geographic Coverage: HUC2 watersheds (CONUS, AK, PR)
  • Source: NOAA Climate Prediction Center

Climate Prediction Center Soil Moisture Percentile Rankings & Anomalies– File Directories: National, By State 

• Processing Frequency: Daily
• Geographic Coverage: United States
• Source: NOAA/Climate Prediction Center

Crop Moisture Index (CMI) - File Directory

• Processing Frequency: Weekly
• Geographic Coverage: Contiguous U.S.
• Source: NOAA Climate Prediction Center

Evaporative Demand Drought Index (EDDI)  - File Directories: CONUS Data, State Data

• Timescales: 1–12 week, 1–12 month
• Processing Frequency: Weekly (1–12 week EDDI), Monthly (1–12 month EDDI)
• Geographic Coverage: Contiguous U.S.
• Source: NOAA Physical Sciences Laboratory

Global Drought Index (DI) - File Directory

• Timescales: 1, 3, 6, 9, 12, 24, 48-month
• Processing Frequency: Monthly
• Geographic Coverage: Global
• Source: Global Precipitation Climatology Center (GPCC)

GPCC Global Standardized Precipitation Index (SPI) - File Directory

• Timescales: 1, 3, 6, 9, 12, 24, 48, 60, 72-month
• Processing Frequency: Monthly
• Geographic Coverage: Global
• Source: NOAA/NCEI

Lawn and Garden Moisture Index - File Directory

• Processing Frequency: Daily
• Geographic Coverage: Southeast U.S.
• Source: Alabama State Climatologist

NOAA Monthly U.S. Climate Gridded Dataset (NClimGrid Monthly) 

• Temperature and Precipitation – File Directory
  • Period of Record: 1895–present
  • Processing Frequency: Monthly
  • Geographic Coverage: Contiguous U.S.
  • Source: NOAA's National Centers for Environmental Information (NCEI)
• Standardized Precipitation Index (SPI) and Standardized Precipitation and Evapotranspiration Index (SPEI) – File Directory
  • Period of Record: 1895–present
  • Timescales: 1, 3, 6, 9, 12, 24, 48, 60, 72-month
  • Processing Frequency: Monthly
  • Geographic Coverage: Contiguous U.S.
  • Source: NOAA/NCEI

NOAA/NCEI Climate at a Glance (CAG) Temperature Anomalies – File Directory

• Period of Record: 1880–present
• Processing Frequency: Monthly (Day 21)
• Geographic Coverage: Global
• Source: NOAA/NCEI

North American Drought Monitor (NADM) – JSON / TIFF

• Processing Frequency: Monthly
• Geographic Coverage: North America
• Sources: NOAA/NCEI, National Drought Mitigation Center, U.S. Department of Agriculture, Environment Canada, Agriculture and Agrifood Canada, National Meteorological Service of Mexico, Mexican National Commission of Water

National Weather Service Drought Information Statements – File Directory

• Processing Frequency: Daily
• Geographic Coverage: United States, Puerto Rico/U.S. Virgin Islands, U.S.–Affiliated Pacific Islands
• Source: NOAA National Weather Service, Weather Forecast Offices

Quantitative Precipitation Forecast (QPF) – File Directory

• Timescales: 1–3 days, 1–7 days
• Processing Frequency: Weekly
• Geographic Coverage: CONUS
• Source: National Weather Service Weather Prediction Center

USDA Drought Disaster Designations – File Directory

• Processing Frequency: Weekly
• Geographic Coverage: U.S. 
• Source: USDA Farm Service Agency

U.S. Geological Survey Streamflow Conditions

• Streamflow data and statistics by state – File Directory
  • Timescales: Real-time
  • Processing Frequency: Daily
  • Geographic Coverage: U.S. 
  • Source: U.S. Geological Survey
• Streamflow data and statistics by HUC2 watershed regions – File Directory
  • Timescales: Real-time
  • Processing Frequency: Daily
  • Geographic Coverage: U.S. 
  • Source: U.S. Geological Survey
• Streamflow data for the ACF and ACT River Basins – File Directory
  • Timescales: Real-time, 7-day, 14-day, 28-day
  • Processing Frequency: Daily
  • Geographic Coverage: Southeast U.S. 
  • Source: U.S. Geological Survey

U.S. Drought Monitor (USDM) 

• National/State Level USDM Maps and Statistics – File Directories: JSON / TIFF
  • Available Maps: Current week, last week, 2 weeks ago, 3 weeks ago, last month, last year
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S., Puerto Rico, U.S. Virgin Islands, U.S.-Affiliated Pacific Islands
  • Source: National Drought Mitigation Center, NOAA, USDA
• Drought Early Warning System (DEWS) USDM Maps and Statistics – File Directory
  • Available USDM Maps: Current week
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S. (DEWS regions)
  • Source: National Drought Mitigation Center, NOAA, USDA

U.S. Drought Monitor Change Map – File Directory

• Available Maps: 1-Week Change Map
• Processing Frequency: Weekly
• Geographic Coverage: U.S., Puerto Rico
• Source: National Drought Mitigation Center, NOAA, USDA

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Sector-Specific Data Downloads

Economic Sector Data – Main File Directory

Agriculture Data

• Field Crops and Livestock (2017) in Drought – File Directory
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: USDA National Agricultural Statistics Service, U.S. Drought Monitor

Ecosystems Data

• EPA Level 2 Ecoregions in Drought – File Directory
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: Environmental Protection Agency, U.S. Drought Monitor

Energy Data

• U.S. Power Plants in Drought – File Directory
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: DOE's Energy Information Administration, U.S. Drought Monitor 

Manufacturing Data

• Field Crops in Drought – File Directory
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: USDA National Agricultural Statistics Service, U.S. Drought Monitor

Navigation & Transportation Data – File Directory

• U.S. Airports in Drought
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: Bureau of Transportation Statistics, U.S. Drought Monitor
• U.S. Interstates in Drought
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: Natural Earth, U.S. Drought Monitor
• U.S. Railways in Drought
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: Bureau of Transportation Statistics, U.S. Drought Monitor
• Major U.S. Waterways in Drought
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: Bureau of Transportation Statistics, U.S. Drought Monitor

Public Health Data – File Directory

• High Social Vulnerability Index (SVI) Counties in Drought 
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: Centers for Disease Control and Prevention, U.S. Drought Monitor
• NOAA Storm Events Data
  • Period of Record: January 1950–Present (with a several month latency)
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: NOAA/NCEI
• AirNow Air Quality Index (AQI)  
  • Processing Frequency: Daily, at 10 a.m. ET
  • Geographic Coverage: U.S.
  • Source: Environmental Protection Agency, NOAA, National Park Service, NASA, CDC, and tribal, state, and local air quality agencies

Recreation & Tourism Data – File Directory

• U.S. Reservoirs in Drought
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: U.S. Geological Survey, U.S. Drought Monitor
• U.S. Ski Resorts in Drought 
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: NOAA's National Operational Hydrologic Remote Sensing Center (NOHRSC), U.S. Drought Monitor
• National Parks in Drought
  • Processing Frequency: Weekly
  • Geographic Coverage: U.S.
  • Source: National Park Service, U.S. Drought Monitor

Water Utilities Data – File Directory

• U.S. Geological Survey Streamflow Conditions & Statistics
  • Timescales: Real-time, 7-day, 14-day, 28-day
  • Processing Frequency: Daily
  • Geographic Coverage: U.S.
  • Source: U.S. Geological Survey
• NOHRSC Snowfall Data
  • Timescales: 6, 24, 48, and 72 hours
  • Processing Frequency: Daily
  • Geographic Coverage: U.S.
  • Source: NOAA/NOHRSC

Wildfire Management Data – File Directory

• NIFC Active Large Wildfire Incidents (fires.json, fires.geojson, NIFCsummary.geojson)
  • Processing Frequency: Daily
  • Geographic Coverage: U.S.
  • Source: National Interagency Fire Center
• NWS Fire Weather Outlooks (fireoutlook-day1.geojson, etc.)
  • Timescales: 1-day, 2-day outlooks
  • Processing Frequency: Daily
  • Geographic Coverage: U.S.
  • Source: National Weather Service Storm Prediction Center

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Map Tiles

Gridded products have been converted into map tiles, which are available in the 'XYZ' tile organization scheme. Additionally, the Drought.gov team has added two files to show the valid date for the data. These files are in the root directory for each tile set. The file date.png is an image of the valid date text, and info.json contains the valid date in the JSON format. The file legend.png is an image of the map legend.

Crop Condition and Soil Moisture Analytics Tool (Crop-CASMA)

• Top 9km– XYZ tiles
• Sub 9km – XYZ tiles
• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: CSISS

Eurpoean Combined Drought Index – XYZ tiles

• Processing Frequency: 3 times per month (day 1, 11, 21)
• Geographic Coverage: 3 times per month
• Source: EDO

Evaporative Drought Demand Index (EDDI): CONUS

• Timescales: 
  • 1-week - XYZ tiles
  • 2-week - XYZ tiles
  • 3-week - XYZ tiles
  • 6-week - XYZ tiles
  • 9-week - XYZ tiles
  • 12-week - XYZ tiles
  • 1-month - XYZ tiles
  • 2-month - XYZ tiles
  • 3-month - XYZ tiles
  • 6-month - XYZ tiles
  • 9-month- XYZ tiles
  • 12-month - XYZ tiles
• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: NOAA's Physical Sciences Laboratory

Evaporative Drought Demand Index (EDDI): Global [NOAA]

• Timescales:
  • 1-month - XYZ tiles
  • 2-month - XYZ tiles
  • 3-month - XYZ tiles
  • 6-month - XYZ tiles
  • 9-month - XYZ tiles
  • 12-month - XYZ tiles
• Processing Frequency: Monthly
• Geographic Coverage: Global
• Source: NOAA's Physical Sciences Laboratory

Evaporative Demand Drought Index (EDDI) Subseasonal Forecasts []

• Timescales:
  • 1-week - XYZ tiles
  • 2-week - XYZ tiles
  • 3-week - XYZ tiles
  • 4-week - XYZ tiles
  • 1-2-week - XYZ tiles
  • 1-2-3-week - XYZ tiles
  • 1-2-3-4-week - XYZ tiles
• Processing Frequency: Monthly
• Geographic Coverage: CONUS
• Source: Climate Engine

Evaporative Stress Index (ESI)

• Global Data
  • Timescales:
    • 4-week - XYZ tiles
    • 12-week - XYZ tiles
  • Processing Frequency: Weekly
  • Geographic Coverage: Global
  • Source: NASA
• CONUS Data
  • Timescales:
    • 4-week - XYZ tiles
    • 12-week - XYZ tiles
  • Processing Frequency: Weekly
  • Geographic Coverage: CONUS
  • Source: NASA

Global Drought Index (DI)

• Timescales:
  • 1-month - XYZ tiles
  • 3-month - XYZ tiles
  • 6-month - XYZ tiles
  • 9-month - XYZ tiles
  • 12-month - XYZ tiles
  • 24-month - XYZ tiles
  • 36-month - XYZ tiles
  • 48-month - XYZ tiles
• Processing Frequency: Monthly
• Geographic Coverage: Global
• Source: GPCC

Global Risk of Drought Impact for Agriculture – XYZ tiles

• Processing Frequency: 3 times per month (day 1, 11, 21)
• Geographic Coverage: Global
• Source: EDO

Global Standardized Precipitation-Evapotranspiration Index (SPEI)

• Timescales:
  • 1-month - XYZ tiles
  • 2-month - XYZ tiles
  • 3-month - XYZ tiles
  • 6-month - XYZ tiles
  • 9-month - XYZ tiles
  • 12-month - XYZ tiles
  • 24-month - XYZ tiles
  • 36-month - XYZ tiles
  • 48-month - XYZ tiles
• Processing Frequency: Monthly
• Geographic Coverage: Global
• Source: CSIC

GRACE-Based Groundwater and Soil Moisture

• Shallow Groundwater – XYZ tiles
• Root Zone Soil Moisture – XYZ tiles
• Surface Soil Moisture – XYZ tiles
• Processing Frequency: Weekly
• Geographic Coverage: Global
• Source: NASA

Multi-Indicator Drought Index (MIDI)

• Long-Term MIDI, Pentad - XYZ tiles
• Short-Term MIDI, Pentad - XYZ tiles
• Geographic Coverage: CONUS
• Source: Climate Engine

GridMET Temperature and Precipitation Data

• Temperature Products:
  • 7-day Mean, Daily - XYZ tiles
  • 7-day Anomaly, Daily - XYZ tiles
  • 15-day Anomaly, Daily - XYZ tiles
  • 30-day Anomaly, Daily - XYZ tiles
• Precipitation Products:
  • 7-day Total, Daily - XYZ tiles
  • 15-day Percent of Normal, Daily - XYZ tiles
  • 30-day Percent of Normal, Daily - XYZ tiles
  • 60-day Percent of Normal, Daily - XYZ tiles
• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: Climate Engine

Keetch-Byram Drought Index – XYZ tiles

• Processing Frequency: Daily 
• Geographic Coverage: CONUS
• Source: North Carolina State Climate Office

NationalSoilMoisture.com Soil Moisture Products

• 5cm All Blend – XYZ tiles
  • Processing Frequency: Daily 
  • Geographic Coverage: CONUS
  • Source: NationalSoilMoisture.com
• NLDAS/RK Blend (50 cm) – XYZ tiles
  • Processing Frequency: Daily 
  • Geographic Coverage: CONUS
  • Source: NationalSoilMoisture.com

nClimGrid Monthly U.S. Gridded Standardized Precipitation Index (SPI)

• Timescales:
  • 1-month - XYZ tiles
  • 2-month - XYZ tiles
  • 3-month - XYZ tiles
  • 6-month - XYZ tiles
  • 9-month - XYZ tiles
  • 12-month - XYZ tiles
  • 24-month - XYZ tiles
  • 36-month - XYZ tiles
  • 48-month - XYZ tiles
  • 60-month - XYZ tiles
  • 72-month - XYZ tiles
• Processing Frequency: Monthly 
• Geographic Coverage: CONUS
• Source: NOAA/NCEI

Palmer Drought Severity Index (PDSI) from GridMET – XYZ tiles

• Processing Frequency: Every 5 days (with a 4–5 day delay)
• Geographic Coverage: CONUS
• Source: Climate Engine

Quantitative Precipitation Forecast (QPF)

• Timescales:
  • 1-day Forecast (noaa-qpf-5km-2d) – XYZ tiles
  • 7-day forecast (noaa-qpf-5km-7d) – XYZ tiles
• Processing Frequency: Daily at 12z
• Geographic Coverage: CONUS
• Source: NOAA's National Weather Service (NWS) - Weather Prediction Center (WPC) 

Quick Drought Response Index (QuickDRI) – XYZ tiles

• Processing Frequency: Weekly
• Geographic Coverage: CONUS
• Source: National Drought Mitigation Center

SNODAS Snow Water Equivalent – XYZ tiles

• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: NOAA's National Operational Hydrologic Remote Sensing Center (NOHRSC), via Climate Engine

NASA SPoRT-LiS 100cm Soil Moisture Percentiles – XYZ tiles

• Processing Frequency: Daily
• Geographic Coverage: Global, CONUS
• Source: NASA

Vegetation Drought Response Index (VegDRI) – XYZ tiles

• Processing Frequency: Weekly
• Geographic Coverage: CONUS
• Source: National Drought Mitigation Center

Vegetation Health Index (VHI)

• Global Data – XYZ tiles
• CONUS Data – XYZ tiles
• Processing Frequency: Weekly
• Source: NOAA

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Foundational temperature and precipitation datasets:

The NIDIS/Drought.gov team process several foundational gridded temperature and precipitation datasets from NOAA and reformat into the COG format for efficient cloud based access and integration into the Climate Engine and Earth Engine platforms.  These datasets are used as the basis for building drought indices and include the full period of record, with daily updates. The Google Cloud Storage bucket locations are listed below.  While the data are free to download anonymously from https using a URL prefix of 'https://storage.googleapis.com/<bucket-name>', a login to Google is required to browse the contents of each bucket.

nClimGrid-Daily (gs://noaa-ncei-nclimgrid-daily) (browse)

• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: NOAA's National Centers for Environmental Information (NCEI)
• Period-of-Record: 1951-present, latency of 3 days

nClimGrid-Monthly (gs://noaa-ncei-nclimgrid-monthly) (browse)

• Processing Frequency: Monthly
• Geographic Coverage: CONUS
• Source: NOAA's National Centers for Environmental Information (NCEI)
• Period-of-Record: 1895-present, latency of 5 days

ACIS Interpolated Grid 1 Natural Neighbor (NN) (gs://noaa-nrcc-acis-nn-daily) (browse)

• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: NOAA's National Centers for Environmental Information (NCEI)
• Period-of-Record: 1951-present, latency of 3 days

Unified CONUS: (gs://noaa-cpc-daily-conus) (browse)

• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: NOAA's Climate Prediction Center (CPC)
• Period-of-Record: 1948-present, latency of 3 days

Unified Global: (gs://noaa-cpc-daily-global) (browse)

• Processing Frequency: Daily
• Geographic Coverage: Global
• Source: NOAA's Climate Prediction Center (CPC)
• Period-of-Record: 1979-present, latency of 3 days

CMORPH Satellite (precipitation-only) (gs://noaa-cpc-cmorph) (browse)

• Processing Frequency: Daily
• Geographic Coverage: CONUS
• Source: NOAA's National Centers for Environmental Information (NCEI) and Climate Prediction Center (CPC)
• Period-of-Record: 1998-present, latency of 3 days

 

Questions? Contact the U.S. Drought Portal team at drought.portal@noaa.gov.

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