Below are a few of our ESC favorite WEATHER SITES, some of which you likely already know (for example the US National Weather Service). Others are not so well known, but are really useful during times of threatening weather, or for outdoor (business or pleasure) planning purposes.
US National Weather Service: This is the NWS home page. It is pretty much a gateway to all things weather for the United States. Of particular interest is the ability to customize a page to suit your particular location. Also, during hurricane season, it is the authoritative source for storm information and updates.
Houston, Texas Weather Forecast (National Weather Service): The official NWS site for weather in the Houston region.
Weather Underground and The Weather Channel: These two sites are "sister sites". In fact, the weekday afternoon television programming on The Weather Channel is entitled "Weather Underground". Either way, the two sites are well known and respected sources for weather conditions, forecasts and weather news. The only issue with the Weather Channel (not web related) is in terms of their evening and overnight TV programming.... I mean really... how many trucks can you watch being pulled out of a ditch?
WeatherNation: For those of you who are looking for a true 24-hour weather source on cable (or satellite), WeatherNation is a good choice. The Weather Channel switches over to more "entertainment-based" programming (unless there is a threat of severe weather) in the evenings and overnight.. WeatherNation is strictly weather, 24 hours a day.... no trucks in ditches...
Blitzortung: Blitzortung is global lightning strike site. The real-time option on this site has the interesting feature of showing which detectors "see" a particular strike. The site typically opens in a global view, but you can zoom down to whatever area of interest strikes (pun intended) your fancy. A version of Blitzortung is also available for mobile phones.
Lightning Maps: This site shows global lightning strikes in near real-time. It also has the option for radar and cloud cover overlays. The position of the map can be changed by "drag and drop" and zoom level can be adjusted between continental and local scale.
Windfinder: A great site for looking at wind speeds and directions. The site offers a fair amount customization and an attractive interface. Wind Map: Although not as practical as Windfinder, the Wind Map site shows a REALLY COOL ANIMATION of wind directions and velocities for the continental United States.
NOAA GOES Image Viewer: This is the go-to site for GOES East Imagery for the continental United States. There is a selection of images by theme (i.e. fire temperature, dust, color cloud cover) and by individual band.