Radar is an acronym that stands for RAdio Detection And Ranging. A weather radar consists of a parabolic dish (it looks like a satellite dish) encased in a protective dome and mounted on a tower of up to five stories tall. About 150 NEXRAD (NEXt generation of weather RADar) Doppler radars were installed throughout the U.S. in the 1990s.
The radar itself does not delineate between rain and snow but AccuWeather’s proprietary algorithms do, based on atmospheric conditions. The state-level Snow/Ice/Rain (Standard) radar images update every 5 minutes on AccuWeather.com Premium, which also gives access to longer loops of radar data. The exclusive AccuWeather.com StormTimer(tm) plots the expected movement of significant storms over the next hour, and also gives access to storm details like hail and rotation.
AccuWeather.com RadarPlus offers an interactive weather experience with street-level radar, satellite and lightning data, as well as PredictiveRadar which moves the current radar picture 4 hours into the future.
The Current Radar map shows areas of current precipitation. A weather radar is used to locate precipitation, calculate its motion, estimate its type (rain, snow, hail, etc.), and forecast its future position and intensity.
Modern weather radars are mostly doppler radars, capable of detecting the motion of rain droplets in addition to intensity of the precipitation. Both types of data can be analyzed to determine the structure of storms and their potential to cause severe weather.
Precipitation type is indicated by the color – green is rain, pink is a mix of rain, freezing rain, sleet, and/or snow, and blue is snow.
Digital radar systems now have capabilities far beyond what their predecessors only dreamed of. Digital systems now offer storm tracking surveillance. This provides users with the ability to acquire detailed information of each storm being tracked.
Storms are first identified by the radar by matching the raw data received from the radar pulse to some sort of template, preprogrammed into the system. Once the storm is identified; speed, distance covered, direction, and Estimated Time of Arrival (ETA) of the storm are all tracked and recorded into a memory location of the radar in order to be utilized later.
In order for a storm to be identified it would have to meet the definitions of a storm, as programed by the manufacturer. Otherwise, any cloud could be mistaken for a storm. Usually the storm must show signs of organization. The storm must have a core or a more intense center to be identified and tracked by digital radar tracking systems.
Yahoo! Weather is a Widgets software developed by Yahoo!. After our trial and test, the software is proved to be official, secure and free. Here is the official description for Yahoo! Weather:
BrothersoftEditor: Get the weather report right on your computer’s desktop with our Weather Widget. It’s a beauty! Current Weather and 5-day Forecast for your city Easily flip between multiple cities Covers the globe with cities around the world and optional Celsius display And it’s easy on the eyes…it will liven up your desktop, even when it’s rainy Part of the Yahoo! Widgets 4 installation, but offered here in the event you’ve lost the Widget. you can free download Yahoo! Weather 3.0 now.
WeatherBlink Toolbar is originally published by Mindspark Interactive Network, which is responsible for releasing many other potentially unwanted programs such as InboxAce Toolbar and Video Download Converter Toolbar.
WeatherBlink Toolbar promises you that you can get access to your local forecast, radar, weather news, allergy reports and more quickly. WeatherBlink Toolbar itself is not a malicious virus but considering its way of getting inside into your computer and its vicious behavior of modifying your home page to Ask Homepage and resetting your search engine to Ask Web Search(Search.tb.ask.com), you should not trust this program.
WeatherBlink Toolbar extension is compatible with all the popular web browsers including Internet Explorer, Google Chrome and Mozilla FireFox. Once installed it adds a WeatherBlink Toolbar on your browsers and change your browser settings immediately.
Whenever you launch your browser WeatherBlink Toolbar appeared and you will be redirected to Ask Homepage(Home.tb.ask.com). WeatherBlink Toolbar may contain apps that access, collect, and use your personal data, including IP address and the address content if web pages you visit.
Meanwhile this program constantly shows you tons of popups and advertisements by using BHO(Browser Helper Object).
WeatherBlink Toolbar can be downloaded from its official website. Usually WeatherBlink Toolbar comes bundled with free applications from internet, such as free software downloads, audios, videos, security programs, system utilities,etc.
When you install WeatherBlink Toolbar you may agree to change your browser settings, and what’s more you may agree to make other unknown program installed together onto your computer if you just keep pressing on the Next or I Accept button.