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By Location | Local

Local Page: Data & Maps

Data Source Summary

 

Below are all data sources used on the local (city-level) location pages. Have questions about the data, maps, or statistics on Drought.gov? Email us at drought.portal@noaa.gov.

Data Source Type

Precipitation and Temperature Conditions

Data Sources
Source Name

Total Precipitation, Last 30 Days

Data Source Update Frequency/Last Updated
Updates Daily
Data Source Description

Source: NOAA Regional Climate Centers (RCC) Applied Climate Information System (ACIS)

Local precipitation information was obtained using services from ACIS. 

Data for Alaska are displayed for the nearest available station. Missing data are indicated with a dotted gray line. These lines do not represent an estimate of conditions during the period where data are unavailable, only the absence of data for a given day.

Source Name

Maximum Temperature, Last 30 Days

Data Source Update Frequency/Last Updated
Updates Daily
Data Source Description

Source: NOAA Regional Climate Centers (RCC) Applied Climate Information System (ACIS)

Local temperature information was obtained using services from ACIS.

Data for Alaska are displayed for the nearest available station. Missing data are indicated with a dotted gray line. These lines do not represent an estimate of conditions during the period where data are unavailable, only the absence of data for a given day.

Data Source Type

Drought Indicators (Climate Toolbox Water Watcher)

Data Sources
Source Name

U.S. Drought Monitor

Data Source Update Frequency/Last Updated
Updates Weekly
Data Source Description

Source: National Drought Mitigation Center

Local U.S. Drought Monitor information was obtained using the National Drought Mitigation Center's U.S. Drought Monitor ArcGIS REST Service.

Source Name

Precipitation (60-Day)

Data Source Update Frequency/Last Updated
Updates Weekly
Data Source Description

Source: University of Idaho - Climate Toolbox Water Watcher

Local 60-day precipitation information was obtained using the Climate Toolbox Water Watcher THREDDS server.

Source Name

Palmer Drought Severity Index (PDSI)

Data Source Update Frequency/Last Updated
Updates Weekly
Data Source Description

Source: University of Idaho - Climate Toolbox Water Watcher

Local Palmer Drought Severity Index (PDSI) information was obtained using the Climate Toolbox Water Watcher THREDDS server.

Source Name

Streamflow (Closest Ranked Gauge)

Data Source Update Frequency/Last Updated
Updates Weekly
Data Source Description

Source: U.S. Geological Survey

Streamflow data were available in a GIS format from USGS WaterWatch. Local streamflow information is obtained by locating the nearest streamflow gauge to the point of interest.

Data Source Type

Drought Indicator Blends

Data Sources
Source Name

Experimental Short-Term Drought Indicator Blend

Data Source Update Frequency/Last Updated
Updates Daily
Data Source Description

Sources: UC MercedClimate Engine

Drought blends data from Climate Engine were available in raster format. 

These experimental blends integrate several key drought monitoring products and indices into a single short-term or long-term product, based on the methodology developed at the NOAA Climate Prediction Center (CPC). The blends are created using the Climate Engine tool, and apply the CPC weighting ratios to the high-resolution gridMET gridded research dataset. The data is updated daily, with a delay of 2 to 3 days to allow for data collection and quality control.

The short-term blend combines PDSI, Z-Index, 1-month SPI, and 3-month SPI to estimate the overall short-term drought. 

This product is an example of current NIDIS-funded researchLearn more.

* Currently, data is only available for the contiguous U.S.
Source Name

Experimental Long-Term Drought Indicator Blend

Data Source Update Frequency/Last Updated
Updates Daily
Data Source Description

Sources: UC MercedClimate Engine

Drought blends data from Climate Engine were available in raster format. 

These experimental blends integrate several key drought monitoring products and indices into a single short-term or long-term product, based on the methodology developed at the NOAA Climate Prediction Center (CPC). The blends are created using the Climate Engine tool, and apply the CPC weighting ratios to the high-resolution gridMET gridded research dataset. The data is updated daily, with a delay of 2 to 3 days to allow for data collection and quality control.

The long-term blend combines PDSI, Z-Index, and 6-month, 1-year, 2-year, and 5-year SPI to estimate the overall long-term drought. 

This product is an example of current NIDIS-funded researchLearn more.

* Currently, data is only available for the contiguous U.S.
Data Source Type

Future Conditions

Data Sources
Source Name

Evaporative Demand Drought Index (EDDI)

Data Source Update Frequency/Last Updated
Updates Weekly
Data Source Description

Source: NOAA Physical Sciences Laboratory

EDDI data from the NOAA/Earth System Research Laboratories/Physical Sciences Laboratory were available in ACSII format. The ASCII data was ingested and converted raster data using GIS.

* Currently, data is only available for the contiguous U.S.
Source Name

CPC Monthly and Seasonal Drought Outlooks

Data Source Update Frequency/Last Updated
Updates Monthly
Data Source Description

Source: Climate Prediction Center

Monthly and Seasonal Drought Outlooks from NOAA's Climate Prediction Center (CPC) were available in a GIS format.

Data Source Type

Historical Conditions

Data Sources
Source Name

U.S. Drought Monitor (2000 - Present)

Data Source Update Frequency/Last Updated
Updates Weekly
Data Source Description

Sources: NDMCNOAAUSDA

U.S. Drought Monitor (USDM) data from the National Drought Mitigation Center were available in a GIS format.

Source Name

Standardized Precipitation Index (1895 - Present)

Data Source Update Frequency/Last Updated
Updates Monthly
Data Source Description

Source: NOAA National Centers for Environmental Information

Standardized Precipitation Index (SPI) data was generated using nClimGrid 5km precipitation data. Monthly gridded SPI data was fitted into the U.S. Drought Monitor drought percentile categories. Categories were accumulated to provide statistical information at the CONUS, state, and county scales.

* Currently, data is only available for the contiguous U.S.
Source Name

Paleoclimate Data (0 - 2017)

Data Source Update Frequency/Last Updated
Yearly Data (Last Updated 2017)
Data Source Description

Source: NOAA National Centers for Environmental Information

Annual gridded paleoclimate Palmer Modified Drought Index (PMDI) data was fitted into the U.S. Drought Monitor drought percentile categories. Categories were accumulated to provide statistical information at the CONUS, state, and county scales.

* Currently, data is only available for the contiguous U.S.
Data Source Type

Statistics: Drought Numbers by County

Data Sources
Source Name

Population in Drought

Data Source Update Frequency/Last Updated
Updates Weekly
Data Source Description

Sources: U.S. Drought Monitor

Data was ingested by the U.S. Drought Monitor web API and stored in a database on the web server.

Source Name

Drought Rankings

Data Source Update Frequency/Last Updated
Updates Monthly
Data Source Description

Sources: NOAA National Centers for Environmental Information

County rank data were ingested from NOAA's National Centers for Environmental Information (NCEI) and joined with spatial data for mapping purposes.