Weather Radar and Alerts

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====== Warnings ======

Weather Radar and Alerts provides a user with the ability to view active warnings issued by the National Weather Services. These warnings are drawn onto the map using a Polygon. The warning text can be viewed by clicking the Triangle Icon {{:alert.png|}} in the center of each warning.

The current warnings that can be displayed are:

  * Severe Thunderstorm Warning
  * Tornado Warning
  * Flash Flood Warning
  * Flood Warning

Additional advisories and warnings are coming in a future release. These include the following advisories and warnings:

  * Unordered List Item

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==== Warning Information ====

To view information about the warning, click the Triangle Icon {{:alert.png|}} in the center of the warning. A box will pop-up and provide the National Weather Service details about the warning.

{{ ::warning_click.png?600 |Warning Information}}

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==== Understanding Warnings ====

=== Severe Thunderstorm Warning ===

This is issued when either a severe thunderstorm is indicated by the WSR-88D radar or a spotter reports a thunderstorm producing hail one inch or larger in diameter and/or winds equal or exceed 58 miles an hour; therefore, people in the affected area should seek safe shelter immediately. Severe thunderstorms can produce tornadoes with little or no advance warning. Lightning frequency is not a criteria for issuing a severe thunderstorm warning. They are usually issued for a duration of one hour. They can be issued without a Severe Thunderstorm Watch being already in effect.

=== Tornado Warning ===

This is issued when a tornado is indicated by the WSR-88D radar or sighted by spotters; therefore, people in the affected area should seek safe shelter immediately. They can be issued without a Tornado Watch being already in effect. They are usually issued for a duration of around 30 minutes.

=== Flood Warning ===

=== Flash Flood Warning ===

Issued to inform the public, emergency management, and other cooperating agencies that flash flooding is in progress, imminent, or highly likely.
Weather Radar and Alerts

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