Featured Research

from universities, journals, and other organizations

The Lightning Flash Before The Flood

Date:
November 24, 2008
Source:
Tel Aviv University
Summary:
Flash floods are the most common natural disaster in the United States, and because of their unpredictability they’re the leading weather-related cause of death for Americans. They usually arrive with little or no warning, but researchers are now trying to predict where and when they will occur ― using lightning.

A wild lightning storm passes overhead with bolts hitting the foothills of the Rocky Mountains outside Denver, Colorado. Researchers are studying the link between lightning and subsequent flash floods.
Credit: iStockphoto/David Parsons

Flash floods are the most common natural disaster in the United States, and because of their unpredictability they’re the leading weather-related cause of death for Americans. They usually arrive with little or no warning, but a Tel Aviv University researcher is trying to predict where and when they will occur ― using lightning.

Related Articles


Prof. Colin Price, coordinator of the international “Flash Project” and head of the Geophysics and Planetary Physics Department at Tel Aviv University, is studying the link between lightning and subsequent flash floods. The three-year study includes scientists from five European countries, and its results are expected to be adopted by weather forecasting agencies around the world.

The goal is to develop an early warning system for people in the path of a flood. “Flash floods are different from normal floods, which are often the product of melting snow. Flash floods are short-lived and dump a lot of rain,” says Prof. Price, a climate change specialist. “Using the radiation emitted from lightning flashes, we’ve developed a system that can give adequate warning to the public ― and save lives.”

Eventually, the Flash system may be used to send messages to cell phones, RSS feeds, GPS units and other devices to warn people in the path of a flash flood and avert disaster.

“Nowcasting” for Flood Warnings

Unlike normal floods which arrive slowly and with more warning, flash floods are particularly dangerous because they happen so quickly, developing from thunderstorms that form in a matter of hours. By measuring the radiation emitted by lightning, researchers can pinpoint the most intense thunderstorms, and the resulting rainfall can be located and tracked.

This data has been used to predict both the path of a storm and where heavy rainfall will appear ―crucial predictions, since the impact of flash floods depends on ground topography, slope and vegetation cover. “Nowcasting,” which predicts what conditions will be in the next few hours, versus “forecasting” a day or two in advance of expected weather conditions, is critical.

Looking at real-time lightning data, Tel Aviv University researchers can see where storms will travel over a period of a few hours, and can warn people in the path of the flood of impending danger. Such a tool will become even more relevant as erratic weather patterns, predicted by climate-change scientists today, become a reality tomorrow.

A Flood of Warnings Delivered in a Flash

The research from the Flash program can be extrapolated for use anywhere in the world, including the flash flood-prone regions of the U.S. For example, the U.S. National Lightning Detection Network could easily apply the results of the Flash research.

“This is a tool for the future,” says Prof. Price. “And it will be even more exciting in the next decade, when we’ll have continuous real-time detection of lightning activity from satellites. That data will be used to predict floods anywhere.” The U.S. will also have geostationary satellites with lightning trackers that will take a picture every 15 minutes from 36,000 kilometers above the earth.


Story Source:

The above story is based on materials provided by Tel Aviv University. Note: Materials may be edited for content and length.


Cite This Page:

Tel Aviv University. "The Lightning Flash Before The Flood." ScienceDaily. ScienceDaily, 24 November 2008. <www.sciencedaily.com/releases/2008/11/081120144244.htm>.
Tel Aviv University. (2008, November 24). The Lightning Flash Before The Flood. ScienceDaily. Retrieved April 19, 2015 from www.sciencedaily.com/releases/2008/11/081120144244.htm
Tel Aviv University. "The Lightning Flash Before The Flood." ScienceDaily. www.sciencedaily.com/releases/2008/11/081120144244.htm (accessed April 19, 2015).

Share This


More From ScienceDaily



More Earth & Climate News

Sunday, April 19, 2015

Featured Research

from universities, journals, and other organizations


Featured Videos

from AP, Reuters, AFP, and other news services

Nervous Return to Everest a Year After Deadly Avalanche

Nervous Return to Everest a Year After Deadly Avalanche

AFP (Apr. 18, 2015) In the Himalayan town of Lukla, excitement mingles with fear as mountaineers make their way up to Everest a year after an avalanche killed 16 guides and triggered an unprecedented shut-down of the world&apos;s highest peak. Duration: 00:37 Video provided by AFP
Powered by NewsLook.com
L.A. Water Cops Remind Residents of Water Conservation

L.A. Water Cops Remind Residents of Water Conservation

Reuters - US Online Video (Apr. 18, 2015) "Water cops" in Los Angeles remind the public about water conservation methods amid California&apos;s prolonged drought. Julie Noce reports. Video provided by Reuters
Powered by NewsLook.com
Planet Defence Conference Tackles Asteroid Threat

Planet Defence Conference Tackles Asteroid Threat

AFP (Apr. 17, 2015) Scientists gathered at a European Space Agency (ESA) facility outside Rome this week for the Planetary Defence Conference 2015 to discuss how to tackle the potential threat from asteroids hitting Earth. Duration: 00:54 Video provided by AFP
Powered by NewsLook.com
Gulf Scarred, Resilient 5 Years After BP Spill

Gulf Scarred, Resilient 5 Years After BP Spill

AP (Apr. 17, 2015) Five years after the Deepwater Horizon spill in the Gulf of Mexico, splotches of oil still dot the seafloor and wads of tarry petroleum-smelling material hide in pockets in the marshes of Barataria Bay. (April 17) Video provided by AP
Powered by NewsLook.com

Search ScienceDaily

Number of stories in archives: 140,361

Find with keyword(s):
Enter a keyword or phrase to search ScienceDaily for related topics and research stories.

Save/Print:
Share:

Breaking News:

Strange & Offbeat Stories


Plants & Animals

Earth & Climate

Fossils & Ruins

In Other News

... from NewsDaily.com

Science News

Health News

Environment News

Technology News



Save/Print:
Share:

Free Subscriptions


Get the latest science news with ScienceDaily's free email newsletters, updated daily and weekly. Or view hourly updated newsfeeds in your RSS reader:

Get Social & Mobile


Keep up to date with the latest news from ScienceDaily via social networks and mobile apps:

Have Feedback?


Tell us what you think of ScienceDaily -- we welcome both positive and negative comments. Have any problems using the site? Questions?
Mobile: iPhone Android Web
Follow: Facebook Twitter Google+
Subscribe: RSS Feeds Email Newsletters
Latest Headlines Health & Medicine Mind & Brain Space & Time Matter & Energy Computers & Math Plants & Animals Earth & Climate Fossils & Ruins