Listed below are some weather and climate sites that I have found especially useful while observing territorial behavior, population dynamics, or migration of Red Admirals and Painted Ladies. Some of these sites maintain only current data, but you can save images or tables from these for your own use.
Weather Source: U.S. National Weather
Hourly weather conditions for the past 24 hours, forecasts, watches, and warnings from your local National Weather Service office, anywhere in the United States. Also gives hourly weather conditions for the past 24 hours for selected locations world-wide.
Real-Time Weather Data--Surface
Hourly weather data and hourly colored contour maps of temperature, dewpoint, winds, and sea-level pressure are among the wide variety of information on this site. Region covered includes the U.S., southern Canada, and northern Mexico. National Center for Atmospheric Research (NCAR).
Hourly weather maps for the U.S., southern Canada, and northern Mexico. Also includes U.S. local forecasts and current conditions.
Real-Time Weather Data/Unisys Weather:
A set of selected North American maps of surface and 850 mb height conditions for the previous 14 days. Maps are for 21 hours Greenwich Mean Time (3 p.m. Central Standard Time) each day. We maintain this archive in cooperation with the Iowa Environmental Mesonet.
Beaufort Wind Scale
Estimate wind speed in the field by observing moving tree branches, waves, flags, and other common objects.
Hydrologic Prediction Service, National
Daily, monthly, and other interactive maps of precipitation in the United States.
Analysis Pages, National Weather
Similar interactive maps as the preceding site, with a different map projection.
Weather: Regional Climate Maps
Formerly Joint Agricultural Weather Facility. Includes daily, weekly, monthly, and percent normal monthly precipitation, as well as other weather data, for various regions of the world.
Ag Climate Network: Iowa State
Hourly and daily weather data archives from Iowa automated weather stations.
Station (ASOS/AWOS) Archived Hourly Weather
Data from July 15, 2006 to the present. The list includes airport stations in Iowa, Minnesota, Montana, Nebraska, North Dakota, South Dakota, and Wyoming.
This site provides a variety of Iowa and U.S. weather information.
RI (Rieman Index) Page: The Rieman Index measures the tendency for warm, moist air from the Gulf of Mexico to move northward into the eastern and midwestern U.S. Migrating butterflies and other insects often ride these moist winds northward in the spring.
Iowa State University Extension Climatologist Elwynn Taylor's home page.
Niño Theme Page
Basic information on El Niño and La Niña from the U.S. National Oceanic and Atmospheric Administration (NOAA).
NOAA La Niña Page
More information on El Niño and La Niña from NOAA.
Oscillation Index Archives
Monthly mean SOI values from January 1876 to the present day. Bureau of Meteorology, Australia.
Oscillation Index and 'SOI Phase'
Graph of recent values of the Southern Oscillation Index. Department of Natural Resources and Mines, Queensland, Australia.
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This page was revised on May 11, 2009.