The US Department of Agriculture recently released these updated data summaries for temperature, precipitation, and vegetation condition in the US. Data summaries include the Palmer Drought Severity Index (PDSI), Crop Moisture Index, Standardized Precipitation Index, Drought Impacts in the US, Percent of Normal Rainfall, Daily Streamflow Map, Snowpack, Soil Moisture, Daily Soil Moisture Anomaly,...

Using satellites and ground-based detection instruments, researchers have now mapped out lightning ratios for the continental United States. The Lightning Ratios site, from Space Science News (NASA), provides recent data in the form of a vibrant color map (.pdf or .jpg) of cloud-to-cloud lightning to cloud-to-ground lightning over the continental United States.

NEWNET (Neighborhood Environmental Watch Network) provides public access to radiological and meteorological data from environmental monitoring stations operated by the Los Alamos National Laboratory (LANL), Alaska Department of Environmental Conservation (ADEC), the University of Alaska Fairbanks (UAF), and the US Environmental Protection Agency (EPA). Available data include "wind speed and...

The Climate Prediction Center provides online data of Standardization Amplitudes of Northern Hemisphere (NH) Teleconnection Patterns. Teleconnection patterns "reflect large-scale changes in the atmospheric wave and jet stream patterns, and influence temperature, rainfall, storm tracks, and jet stream location/ intensity over vast areas." This site contains teleconnection patterns data on a monthly...

The National Center for Atmospheric Research supplies four types of real-time weather data: satellite, radar, surface, and upper-air. In the satellite link, users have the choice to view images in either one of five wavelengths or one of the three multi-spectral assemblages. The images can also be viewed by the latest image, small loop, or a large loop. The WSR-88D radars provide images with...