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Forecasting Floods in 3D

Hydrologists Forecast Floods Based on Detailed Weather Forecasts and Local Geology

October 1, 2010

Hydrologists created a map that turns the weather forecast into a flood forecast in one hour. By adding the amount of approaching rain to the local geography, the flood map can show when and where a flood will occur and how deep the water will be. The new map can help evacuation efforts move faster, calculate damage costs before the flood and help rescue crews get a head start.

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Science Insider

ABOUT GIS: Scientists can use Geographic Information System (GIS) software in many applications, including flood forecasting. The information can also be customized to show information vital to firefighters, emergency planners and farmers. A GIS allows users to create layers of relevant information atop a map to form a comprehensive picture of events. In disaster response situations, people must be mobile and have immediate access to information. A GIS can be adapted to software that uses programs called intelligent agents, enabling mobile devices to function smoothly even if they cannot always access a wireless network. The agents monitor changes in the network and store and secure data in the event of a network disruption. Such programs can run on any type of mobile device, use any type of wireless network, and even establish their own ad hoc networks in the event that all other available networks fail, all of which can make a big difference during a disaster.

THE DIFFERENCE BETWEEN A FLOOD WATCHES AND FLOOD WARNINGS: Generally, a watch indicates that conditions are favorable for flooding, that a flood is possible. A warning, however, indicates that flooding is imminent or occurring. Weather forecasters can tailor these alerts for flash floods, river floods, and other causes and environments.

The American Geophysical Union, the American Meteorological Society, the American Mathematical Society, the Mathematical Association of America and the American Physical Society contributed to the information contained in the TV portion of this report.

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To Go Inside This Science:
Joseph L. Jones
USGS Washington Water Science Center
Tacoma, WA 98402
253-552-1600 ext .2684
jljones@usgs.gov

Mike Breen and Annette Emerson
American Mathematical Society
Providence, RI 02904-2294
paoffice@ams.org
1-800-321-4267

American Meteorological Society
Boston, MA 02108-3693
617-227-2425

Ivars Peterson
Mathematical Association of America
Washington, DC 20036-1358
ipeterson@maa.org
1-800-741-9415

Peter Weiss
American Geophysical Union
pweiss@agu.org
202-777-7507
Washington, DC 20009-1277

James Riordon, Media Relations
American Physical Society
College Park, MD
301-209-3238
Riordon@aps.org