How Tornadoes Form
The formation of a tornado can be broken down to three stages: 1) low level horizontal spin,…
Understanding Hail
Hail, Showery precipitation in the form of irregular pellets or balls of ice more than 5 mm…
Severe Weather Preparedness
Tornadoes, floods, thunderstorm winds, hail, lightning, heat, wildfires, rip currents and tsunamis - spring is three months…
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What is the Beaufort Wind Scale?
The Beaufort Wind Scale (BEW-fert scale) or sometimes called The Wind Intensity Scale: is used to estimate wind speeds based on observation of objects in relationship to the wind. This method of measuring wind speed was…
2013 Atlantic Hurricane Names | 2013 Atlantic Tropical Cyclone Reports
Hurricanes are named alphabetically from a predetermined list beginning the letter "A" through "W", excluding names that begin with "Q" or "U." A storm is first named by the National Hurricane Center when the system becomes…
What is a Tropical Cyclone?
A Tropical Cyclone - generically describes a low pressure system that typically forms in the tropics. A collection of strong thunderstorms makeup a cyclone, and in the Northern Hemisphere, surface winds rotate counterclockwise. In the North…
iAlert.com Newsletters
This page keeps track of iAlert.com newsletters. Newsletters are sent 4-5 times per year to inform iAlert members of feature/functionality updates and/or to communicate important service information. June 2014 Premium Service Update 2014 Supporting iAlert.com Campaign…
Local Storm Reports on iAlert.com
A Local Storm Report (LSR) is an event driven storm damage and observational report issued by the National Weather Service (NWS). These reports are submitted to the local NWS office by trained storm spotters, amateur radio…
What is a Derecho?
A Derecho (deh REY cho), or sometimes called a "Bow Echo" due to the bent curve of the radar signature, is a wide spread, long-lived, line or cluster of strong thunderstorms, that rapidly moves east or…
Eastern U.S. Flooding Potential with Tropical Storm Andrea
4:00 PM Thursday June 6, 2013: Tropical Storm Andrea is forecast to be a major rain maker over the entire eastern U.S. and people in the path of this tropical storm, especially those in flood prone…
Tropical Storm Andrea Bears down on Florida
8:30 A.M. Thursday June 6, 2013: The first Tropical Storm of the 2013 Atlantic hurricane season is "Tropical Storm Andrea" which quickly developed in the Gulf of Mexico on Wednesday. Andrea is forecast to bring heavy…
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