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 MCLEAN, Va., Oct. 5 /PRNewswire/ -- Unisys Corporation (NYSE: UIS) announced today that it had delivered a new and advanced Doppler weather radar to the National Weather Service at the Brookhaven National Laboratories located at Upton on Long Island. Although the radar is operational, the system will see only limited use until the National Weather Service forecast office completes its move from New York City to the new site, which is scheduled to be completed by late October.
 The multi-million dollar radar, dubbed the WSR-88D, will provide weather radar coverage for all of Long Island, New York City, southern New York state and southern Connecticut. The radar is already installed at 33 locations around the country and is providing significant improvements in the detection and tracking of severe weather in those locations. Where the WSR-88D radar is operational, false alarm rates have been cut in half and the probability of detection of severe storms has doubled to close to 90 percent accuracy. In Norman, Okla., which has the longest experience with the radar, average warning times of tornadoes have gone from two minutes with previous radars to 18 minutes with the WSR-88D.
 The new WSR-88D radar uses the Doppler effect to measure radial wind speed and velocity, and can detect the circular motion characteristic of mesocyclones, the parent circulation of most tornadoes, as well as the unique radar Tornadic Vortex Signature (TVS) that indicates the formation of a tornado.
 The WSR-88D has a range of about 285 miles for reflectivity (precipitation) data, and about 145 miles for velocity data. That means the Upton radar can detect precipitation as far away as Portland, Maine and detect wind velocity as far away as Atlantic City, N.J. In addition to the Upton radar, the Unisys-built systems have already been installed at Griffiss Air Force Base and Binghamton in upstate New York, and systems are scheduled for installation in Albany, N.Y., later this year and in Buffalo, N.Y., in mid-1995.
 Currently, 40 WSR-88D radars are installed and operational throughout the country. The radars are located in:
 Alabama Michigan
 East Alabama White Lake (near Detroit)
 Arizona Mississippi
 Phoenix Keesler Air Force Base (two
 training systems)
 Little Rock Missouri
 Kansas City (3)
 California St. Louis
 Vandenberg Air Force Base
 Colorado Grand Island
 New York
 Delaware Binghamton
 Dover Air Force Base Griffiss Air Force Base
 Florida Ohio
 Eglin Air Force Base Cleveland
 Miami Oklahoma
 Guam Oklahoma City
 Anderson Air Force Base Tulsa
 Illinois Pennsylvania
 Chicago Philadelphia
 Indiana State College
 Kansas Amarillo
 Dodge City Central (Fort Hood)
 Goodland Houston/Galveston
 Wichita Virginia
 Sterling (just outside
 A radar has also been installed at Norman, Okla., to serve as the Operational Support Facility for the entire WSR-88D program.
 Throughout the rest of 1993, radars are scheduled to be installed in:
 Fort Rucker, Ala. Albany, N.Y.
 Robins Air Force Base, Ga. Morehead City, N.C.
 Boise, Idaho Vance, Okla.
 Des Moines, Iowa Sioux Falls, S.D.
 Fort Knox, Ky. Millington, Tenn. (near Memphis)
 Portland, Maine Dyess Air Force Base, Texas
 Boston Milwaukee
 In addition, three radars originally destined for the Republic of Korea and Japan for use by the U.S. Air Force are being diverted to Fairbanks and Anchorage, Alaska, and Molokai, Hawaii, for use by the Federal Aviation Administration and will be installed in late 1993 and early 1994.
 More than 160 of the radars are scheduled to be installed and operational by 1996 through the U.S. and at selected international locations. The principal users are the National Weather Service, the FAA and the U.S. Air Force Air Weather Service, which are jointly funding the program. One of the key advantages of the system is that up to 46 users can simultaneously receive live data from a single radar and manipulate that information independently through the use of workstations called Principal User Processors, or PUPs. For example, while the National Weather Service controls the WSR-88D radar at Sterling, Va., PUPs are used by Andrews Air Force Base (the base used by the president and other dignitaries) and the Washington Air Route Traffic Control Center (ARTCC) to independently monitor the weather. In New York, the weather office in Islip already has been equipped with a PUP to display data from the Upton radar.
 Beyond that, other potential users, such as television, emergency management services, and other interested users can buy direct access to the data from the radars through four distributors in what is called the NEXRAD Information Dissemination Service (NIDS). Unisys is one of four distributors of the data, which can be displayed on any standard 386 or 486 personal computer equipped with a modem.
 Information from the Upton radar is expected to be available on the NEXRAD Information Dissemination Service (NIDS) beginning Oct. 15, with complete 24-hour service anticipated by the end of the month. Unisys is one of the foremost weather radar system producers in the world. In addition to the WSR-88D, the company also has produced a demonstration network of 30 Wind Profiler systems in the central U.S. The Wind Profiler is designed to detect and measure the speed and direction of upper wind fields in clear air. The system can be equipped to measure temperatures at various altitudes using acoustic devices. Unisys has also developed an experimental low-cost radar that can detect and measure microburst windshears at airports with warning times of two to five minutes before the wind reaches ground level. All currently deployed systems can only detect such microbursts when the wind hits the ground and spreads out horizontally.
 Unisys Corporation is a leading information systems company with 60,000 customers in more than 100 countries. The company is a major supplier of information services and technology to financial service, government, telecommunications, airline and other commercial markets.
 -0- 10/5/93
 /CONTACT: Patricia Schoppmeyer of the Unisys Corporation, 516-574-1404/

CO: Unisys Corporation; National Weather Service ST: Virginia IN: ARO CPR SU:

DT-DC -- DC018 -- 8929 10/05/93 14:11 EDT
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Publication:PR Newswire
Date:Oct 5, 1993

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