U.S. Drought Monitor


The above image is a map of drought conditions across the United States as delineated in the U.S. Drought Monitor, which is released every Thursday morning. To view an interactive version of this map, click on the "U.S. Drought Monitor" link below. To view an individual state in the Pittsburgh County Warning Area, use the following links: Northeastern US   Midwest US

Below is a list of links that highlight different products that may be of interest for monitoring drought conditions.


Drought Monitors/Indices:


U.S. Drought Monitor A national map showing drought intensity and impacts, produced in collaboration by the National Drought Mitigation Center (NDMC), the Climate Prediction Center (CPC), and the National Climatic Data Center (NCDC), among other agencies.
http://droughtmonitor.unl.edu/.

North American Drought Monitor
Similar to the U.S. Drought Monitor, this is issued monthly for the United States, Canada, and Mexico.
http://www.ncdc.noaa.gov/oa/climate/monitoring/drought/nadm/nadm-map.html

Palmer Drought Index One of the major indices used when monitoring drought conditions, taking into account rainfall, temperature, and historical data. NOTE: This index is issued for climatic zones, which do not cross state lines.
http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/regional_monitoring/palmer.gif

Crop Moisture Index Based on the Palmer Drought Index, the CMI is designed to monitor short-term moisture conditions affecting developing crops. NOTE: This index is issued for climatic zones, which do not cross state lines.
http://www.cpc.ncep.noaa.gov/products/analysis_monitoring/regional_monitoring/cmi.gif

Standardized Precipitation Index Developed in 1993, the SPI is an index based on the probability of precipitation for any time scale.  The SPI can be computed for different time scales, can provide early warning of drought and help assess drought severity, and is less complex than the Palmer.
http://www.hprcc.unl.edu/maps/current/index.php?action=update_product&product=SPIData#

Experimental Objective Blends of Drought Indicators The short-term blend approximates drought-related impacts that respond to precipitation (and secondarily other factors) on time scales ranging from a few days to a few months, while the long-term blend approximates drought-related impacts that respond to precipitation on time scales ranging from several months to a few years.
http://www.cpc.ncep.noaa.gov/products/predictions/tools/edb/droughtblends.php

Pennsylvania Drought Condition Monitoring Drought monitoring done by the Pennsylvania USGS office.
http://pa.water.usgs.gov/drought/index.php



Observations:
Precipitation Monitoring Included are links for 30, 90, 180, and 365 day periods, with graphics showing precipitation, precipitation anomalies, percentage of normal, and normal precipitation totals on a national scale.
http://www.cpc.ncep.noaa.gov/cgi-bin/US_anom_realtime.sh

Precipitation Accumulation A graphic showing precipitation accumulation for the last 30 days taken by cooperative observers across the state of Pennsylvania.
http://www.erh.noaa.gov/ctp/coop/precip/30dayprecip.png

Precipitation Accumulation/Departure Included are graphics from the Ohio River Forecast Center showing average precipitation and precipitation departure from multiple time periods.
http://www.erh.noaa.gov/ohrfc/Observed.html

Precipitation Departure Included are graphics from the Mid-Atlantic River Forecast Center for counties in Pennsylvania showing average precipitation and precipitation departure from multiple time periods on a county scale.
http://www.erh.noaa.gov/marfc/Precipitation/Departures/

Precipitation Analysis Included are graphics for last 1, 7, 14, 30, 60, 90, and 180 days, month to date, and year to date rainfall, as estimated by radar. You may view observed, normal, departure from normal, and percent of normal graphics. Clicking on a state while viewing the national map will zoom in.
WARNING: Values in and along the mountains may not be as accurate due to blockage of radar beams.
http://water.weather.gov/

U.S. Rain Days  Included are graphics showing the maximum consecutive dry days in the last 7 and 30 day periods (classified as less than 0.04 inches of rain), the number of rain days in the last 7 and 30 day periods, and number of days since last rain.
http://drought.unl.edu/MonitoringTools/USRainDaysandDryDays.aspx

River Streamflow  Depicts the percentage of streamflow compared to historical streamflow for a given day. Clicking on a state while viewing the national map will zoom in. 
http://waterwatch.usgs.gov/?id=ww_current

U.S. Soil Moisture Monitoring The “Soil Moisture” bullet (second from the top) leads to graphics showing soil moisture, soil moisture anomalies, soil moisture percentiles on a daily, monthly, and yearly basis.
http://www.cpc.ncep.noaa.gov/products/Soilmst_Monitoring/US/Soilmst/Soilmst.shtml



Forecasts:
Temperature and Precipitation Outlooks The latest 1-month and 3-month temperature and precipitation outlooks issued by the Climate Prediction Center (CPC).
http://www.cpc.ncep.noaa.gov/products/predictions/multi_season/13_seasonal_outlooks/color/page2.gif

The U.S. Seasonal Drought Outlook Issued by the CPC, issued approximately every 2 weeks.
http://www.cpc.ncep.noaa.gov/products/expert_assessment/seasonal_drought.html



Miscellaneous:
Drought Statement  The latest drought statement issued by the National Weather Service in Pittsburgh. Statements are issued as conditions warrant.
http://www.crh.noaa.gov/product.php?site=nws&product=DGT&issuedby=PBZ

Drought Monitor Classification Change National graphics showing the change in drought intensity over 1 and 4 weeks, 1 month and 3 months, during the current calendar year (January 1 to present), and during the current water year (October 1 to present).
http://www.cpc.ncep.noaa.gov/products/predictions/experimental/edb/dm-change-6maps.png

Drought Impact Reporter National database of drought impacts, including impact categories of agriculture, water/energy, environment, fire, social, and other impacts.
http://droughtreporter.unl.edu/

NOAA Drought Information Center A portal for NOAA drought and climate conditions.
http://www.drought.noaa.gov/

U.S. Drought Portal A portal for drought information by the National Integrated Drought Information System.
http://www.drought.gov/


This page and its data are possible due to the efforts of the following organizations: NOAA, CPC, USGS, NDMC, USDA, and USACE.


If you have any questions about the content of this webpage, please contact us at pit-comments@noaa.gov.