Pella Chronicle

Community News Network

March 5, 2013

NWS expands warning program

OTTUMWA — The National Weather Service is expanding a pilot program last year that will change how you get weather warnings.

The Impact Based Warning approach seeks to provide more information about what kind of damage people could expect from severe storms. Take tornadoes, for example. The warnings seek to distinguish between radar indicated tornadoes, those which radar says exist but are otherwise unconfirmed, and those which are observed by spotters, law enforcement, or other sources.

There are two damage "tags" that can be used. Most tornadoes won't need one, according to the NWS, because most tornadoes are weak and short lived.

Tags begin "Tornado Damage Threat" and end with either "considerable" or "catastrophic." The former is used when evidence suggests a tornado will be long lived, capable of producing considerable damage and, "is imminent or ongoing."

Instructions with the catastrophic tag indicate it should be used "exceedingly rarely," and only when a violent tornado is observed and confirmed. How rare and how violent? The example the NWS uses for it was the Joplin tornado.

The initial pilot program involved Kansas and Missouri in 2012. This year's expansion covers those states plus 12 more. You can read about the program by clicking here.





Text Only
Community News Network
AP Video
Broncos Owner Steps Down Due to Alzheimer's US, UN Push Shuttle Diplomacy in Mideast Trump: DC Hotel Will Be Among World's Best Plane Crashes in Taiwan, Dozens Feared Dead Republicans Hold a Hearing on IRS Lost Emails Raw: Mourners Gather As MH17 Bodies Transported Robot Parking Valet Creates Stress-free Travel Raw: MH17 Bodies Arrive in Netherlands Raw: Fight Breaks Out in Ukraine Parliament Disabled Veterans Memorial Nearing Completion Last Mass Lynching in U.S. Remains Unsolved Home-sharing Programs Help Seniors Ex-NYC Mayor: US Should Allow Flights to Israel Clinton: "AIDS-Free Generation Within Our Reach" Judge Ponders Overturning Colo. Gay Marriage Ban Airlines Halt Travel to Israel Amid Violence Police Probing Brooklyn Bridge Flag Switch
Hyperlocal Search
Premier Guide
Find a business

Walking Fingers
Maps, Menus, Store hours, Coupons, and more...
Premier Guide