WSR-57
![](../I/m/WSR-57_antenna.jpg)
WSR-57 radars were the USA's main weather surveillance radar for over 35 years.[1] The National Weather Service operated a network of this model radar across the country, watching for severe weather.
History
![](../I/m/1965May06_1919.jpg)
The WSR-57 (Weather Surveillance Radar - 1957) was the first 'modern' weather radar. Initially commissioned at the Miami Hurricane Forecast Center, the WSR-57 was installed in other parts of the CONUS (continental United States).[2] The WSR-57 was the first generation of radars designed expressly for a national warning network.[3]
The WSR-57 was designed in 1957 using World War II technology. It gave only coarse reflectivity data and no velocity data, which made it extremely difficult to predict tornadoes.[2] Weather systems were traced across the radar screen using grease pencils. Forecasters had to manually turn a crank to adjust the radar's scan elevation, and needed considerable skill to judge the intensity of storms based on green blotches on the radar scope.[1]
The military designation for the WSR-57 is AN/FPS-41.[2]
NOAA has interesting pictures of the Charleston, SC WSR-57 radar image of Hurricane Hugo in 1989. At the National Hurricane Center (NHC), Hurricane Andrew in 1992 blew the WSR-57 dish off their roof.[4] The NHC report on Hurricane Andrew shows its last radar image, as well as images from nearby WSR-88D radars.[4]
As the network of WSR-57 radars aged, some were replaced with WSR-74S models of similar performance but with better reliability. WSR-57 operators sometimes had to scramble for spare parts no longer manufactured in this country.[1] One hundred twenty-eight of the WSR-57 and WSR-74 model radars were spread across the country as the National Weather Service's radar network until the 1990s.[5] They were gradually replaced by the WSR-88D model (Weather Surveillance Radar - 1988, Doppler), constituting the NEXRAD network.
The last WSR-57 radar in the United States was decommissioned on December 2, 1996.[1]
Radar sites
The 66[1] former sites of the WSR-57 include[2][6][7][8] the following:
Site (Site ID) | Commissioned (Date / Chronological Rank) | Decommissioned |
---|---|---|
Miami, FL (MIA) Moved to Coral Gables in 1967. |
June 26, 1959 1st |
August 24, 1992 Destroyed during Hurricane Andrew. |
Kansas City, MO (MCI) The dome still resides downtown. |
1959 2nd |
November 9, 1995 |
Charleston, SC (CHS)[1] | 1959 About 16th |
December 2, 1996 |
Key West, FL (EYW?) | Early 1960 Among first 31 |
Early 1980s Replaced by a WSR-74S. |
Wichita, KS (ICT) | June 22, 1960 Among first 31 |
November 9, 1995 |
Cincinnati, OH (CVG) (Covington, KY) at the Greater Cincinnati Airport. |
1960 (testing in June) About 16th |
June 21, 1996 |
St. Louis, MO (STL) | July 1960 Among first 31 |
June 19, 1996 |
Wilmington, NC (ILM) | Before September 1960 Among first 31 |
November 16, 1995 |
Tampa Bay Area, FL (TBW) | 1960 Among first 31 |
November 9, 1995 |
Galveston, TX (GLS) | 1960 Among first 31 |
May 22, 1995 |
Brownsville, TX (BRO) | March 1961 About 16th |
February 28, 1996 |
Fort Worth, TX (FTW) moved to Stephenville, TX (SEP) in October 1973. |
April 5, 1961 Among first 31 |
August 1, 1995 |
Detroit, MI | September 12, 1961[9]
Among first 31 |
Replaced with a WSR-74S. |
Amarillo, TX (AMA) | 1961 Among first 31 |
September 15, 1994 |
Norman, OK - NSSL Research radar; not part of the national network. |
1962? Probably not counted among first 31 |
1980s |
Catalina Island, CA (STC?) a.k.a. Santa Catalina - atop Blackjack Mountain. |
Early 1963? Among first 31 |
1960's |
Little Rock, AR (LIT was the WSR-57 designator. LZK is the WSR-88D and WFO Designation.) | 1959 Among first 31 |
Moved to North Little Rock Airport with NWSFO in 1975. Final decommissioning was June 8, 1995 |
Sacramento, CA (SAC) | Early 1960s Among first 31 |
August 24, 1995 |
Washington, D.C. (IAD) At Washington Dulles International Airport, Dulles, VA. |
Early 1960s Among first 31 |
Early 1980s Replaced by a WSR-74S at Patuxent River, MD. |
Apalachicola, FL (AQQ) | Early 1960s Among first 31 |
January 19, 1996 |
Daytona Beach, FL (DAB) | Early 1960s Among first 31 |
December 1, 1995 |
Des Moines, IA (DSM) | Early 1960s Among first 31 |
May 7, 1996 |
Chicago, IL (?) | Early 1960s Among first 31 |
Early 1980s Replaced by a WSR-74S at Marseilles, IL |
Evansville, IN (EVV) | Early 1960s Among first 31 |
July 12, 1996 |
Lake Charles, LA (LCH) | Early 1960s Among first 31 |
October 12, 1995 |
New Orleans, LA (MSY) At Slidell, LA |
Early 1960s Among first 31 |
August 22, 1995 |
Minneapolis, MN (MSP) At the airport |
Early 1960s Among first 31 |
April 3, 1996 |
Missoula, MT (MSO) At Point Six Mountain |
Early 1960s Among first 31 |
December 12, 1995 |
Atlantic City, NJ (ACY) | Early 1960s Among first 31 |
September 13, 1995 |
New York City, NY (NYC)![]() |
Early 1960s Among first 31 |
September 26, 1995 |
Oklahoma City, OK (OKC) | Early 1960s Among first 31 |
July 25, 1994 |
Portland, ME (?) At Brunswick Naval Air Station |
November 1969 | Replaced by a WSR-74S. |
Jackson, MS (JAN) At Jackson International Airport at Thompson Field. |
1969 | June 21, 1995 |
Limon, CO (LIC) | 1960s | December 22, 1995 |
Garden City, KS (GCK) | 1960s | September 1, 1994 |
Grand Island, NE (GRI) | 1960s | January 19, 1996 |
Buffalo, NY (BUF) | 1960s | February 14, 1996 |
A note on the chronological ranks - The first 31 were built through the early 1960s, at existing Weather Bureau offices. 14 were along the Gulf and Atlantic coasts. 11 were in the Midwest. 3 were inland of the East Coast, and California and Montana had one each on mountaintops. The late 1960s saw 14 more built east of the Rockies. | ||
Nashville, TN (OHX) At Old Hickory Lake |
November 1970 | January 19, 1996 |
Memphis, TN (MEG?) At the Millington Naval Air Station. |
February 1971 | December 1985 Replaced by a WSR-74S. |
Medford, OR (MFR) | June 1971 | August 30, 1996 |
Centreville, AL (CKL) |
June 27, 1995 | |
Pensacola, FL (PNS/NPA) | January 19, 1996 | |
Athens, GA (AHN) | September 13, 1996 | |
Waycross, GA (AYS) | January 19, 1996 | |
Cape Hatteras, NC (HAT) | December 6, 1995 | |
Pittsburgh, PA (PBZ) | May 10, 1995 | |
Huron, SD (HON) | October 30, 1971 [10] | November 4, 1996, now a live dual-polarization for KELOLAND-TV |
Bristol, TN (TRI) | January 19, 1996 | |
Midland/Odessa, TX (MAF) | June 4, 1996 | |
Neenah, WI (EEW) | 1972? | November 2, 1995 |
Hondo, TX (HDO) | July 1971[11] Last (66th) |
March 14, 1996 |
Radar properties
![](../I/m/Last_radar_images_WSR_Miami_Hurricane_Andrew-1992.jpg)
- The radar uses a wavelength of 10.3 cm.[12] This corresponds to an operating frequency of 2890 MHz. This frequency is in the S band, which is also used by today's weather radar network.
- WSR-57 radars had the following interesting statistics:[12]
- Dish diameter: 12 feet (3.7 m)
- Power output: 410,000 watts
- Maximum range: 915 km (494 nm)
References
- 1 2 3 4 5 6 "Weather service retires last of old radars". USAToday. November 4, 1999. Retrieved 2008-03-27.
- 1 2 3 4 "History of Operational Use of Weather Radar by U.S. Weather Services". AMS. Retrieved 2008-03-27.
- ↑ "Historic Tornado Warning Conference Launched Nation's First Weather Radar Network". NOAA. Retrieved 2008-03-27.
- 1 2 "Preliminary Report Hurricane Andrew 16–28 August 1992". NOAA. Retrieved 2008-03-27.
- ↑ "An Overview of NEXRAD Products Available via UCAR's Unidata Program". wsicorp.com. Archived from the original on April 20, 2008. Retrieved 2008-03-27.
- ↑ "Assessment of Nexrad Coverage and Associated Weather Services (1995)". books.nap.edu. Retrieved 2008-03-27.
- ↑ "Report of US Weather Bureau Studies in Radar Hydrology" (PDF). cig.ensmp.fr. Retrieved 2008-03-27.
- ↑ "NWS Offices Past and Present". dm.net. Retrieved 2008-03-27.
- ↑ National Weather Service Detroit/Pontiac Forecast Office. "Beecher 50th Anniversary Commemoration". National Weather Service Central Region Headquarters. Retrieved 2014-06-26.
- ↑ https://www.newspapers.com/newspage/21670634
- ↑ "HONDO, TEXAS". utexas.edu. Retrieved 2008-03-27.
- 1 2 "WSR - Weather Surveillance Radar". weather.cod.edu. Retrieved 2008-03-27.