The Evaporative Demand Drought Index (EDDI) is an experimental tool that can serve as an indicator of both rapidly evolving "flash" droughts (developing over a few weeks) and sustained droughts (developing over months but lasting up to years).
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Monthly Gridded Data (nClimGrid): Gridded Monthly Precipitation, Gridded Monthly Temperature Average, Gridded Monthly Temperature Maximum, and Gridded Monthly Temperature Minimum
Because of the far-reaching societal and economic impacts of drought, there is considerable interest in determining how much precipitation is required to end a drought as well as the probability that a region may receive the necessary amount of precipitation. Ending a hydrological drought requires that the moisture needs associated with recharge, demand and runoff have been brought back to normal or above normal.
Drought Termination and Amelioration data and maps are available for:...
The western United States consists of complex terrain where local precipitation and temperature can vary dramatically across short distances, which in turn impact local drought conditions. The goal of WestWide Drought Tracker (WWDT) is to provide easy access to fine-scale drought monitoring and climate products that can be utilized by a variety of users. The climate data sets, drought indices, and maps that are found on WWDT use monthly data which are updated with new values at the...
The Climate Prediction Center has developed monthly and seasonal tools are based on the Constructed Analog on Soil Moisture (CAS). Note that both of these are only forecast tools. They may be used in making the official outlooks that go out to the public, but are not official forecasts in their own right.
This data set contains output from the NOAA National Weather Service's National Operational Hydrologic Remote Sensing Center (NOHRSC) SNOw Data Assimilation System (SNODAS), beginning 1 October 2003. SNODAS is a modelling and data assimilation system developed by the NOHRSC to provide the best possible estimates of snow cover, depth, snow water equivalent (SWE) and associated variables to support hydrologic modelling and analysis. The aim of SNODAS is to provide a physically consistent...
The Climate Prediction Center has developed a soil moisture tool for the next 2 weeks based on the National Weather Service Global Forecast System (GFS) model. Note that these are only forecast tools. They may be used in making the official outlooks that go out to the public, but are not official forecasts in their own right. The GFS bias corrected ensemble forecasts (daily precipitation and temperature at 00Z & 12Z) for Week 1 and Week 2 are used to drive the soil moisture model.
NWS Graphical Forecast is an interactive map that displays current and forecasted meteorological products including: Temperature, Precipitation, Probability of Precipitation, Weather, Hazards, Dew Point, Relative Humidity, Wind Speed, Wind Gusts, Wind Direction, and Sky Cover.
Forecasts and current conditions for soil moisture (SM) and cumulative runoff. Forecast maps include precentiles at one-, two- and three-month leads
Paleoclimatology data are derived from natural sources such as tree rings, ice cores, corals, and ocean and lake sediments. These proxy climate data extend the archive of weather and climate information hundreds to millions of years. The data include geophysical or biological measurement time series and some reconstructed climate variables such as temperature and precipitation.
NCEI provides the paleoclimatology data and information scientists need to understand natural climate...