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National Weather Service (NWS) National Weather Service (NWS)
National Weather Service (NWS)
This collection contains reports and materials published by the National Weather Service and NWS researchers. Included are technical reports and memorandums, as well as special publications and some video covering a variety of topics such as climate science, space weather, the atmosphere and meteorology.
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1 - 20 of 1968 results
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  • Objective aids for forecasting minimum temperatures at Reno, Nevada, during the summer months / Christopher D. Hill
    Personal Author:
    Hill, Christopher D.
    Corporate Authors:
    United States, National Weather Service., Western Region,
    Published Date:
    1976
    Series:
    NOAA technical memorandum NWS WR ; 104
    Description:
    "Objective methods for relating meteorological parameters at some afternoon hour to forecast the subsequent minimum temperature are welI known [I]. In the early 1960s staff members at Reno WSFO began using dry-bulb and dew-point temperature measureme...
    File Type:
    Filetype[PDF - 1.29 MB]
  • A threat score statistic for hurricane track forecasts
    Personal Author:
    Gerrity, Joseph P.
    Corporate Authors:
    National Meteorological Center (U.S.)
    Published Date:
    1982
    Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 261
    Description:
    "I recently had occasion to read a report in which two sets of hurricane track forecasts were compared. The statistic used in the comparison was the distance between the observed and forecast position of the storm center. While it was easy to grasp t...
    File Type:
    Filetype[PDF - 397.34 KB]
  • Improved prediction of liquid precipitation type
    Personal Author:
    Gilhousen, David B.
    Corporate Authors:
    United States, National Weather Service., Techniques Development Laboratory,
    Published Date:
    1979
    Series:
    TDL office note ; 79-8
    File Type:
    Filetype[PDF - 1.75 MB]
  • Some aspects of PoP forecast performance by Southern Region WSFOs -- revisited
    Personal Author:
    Cummings, Allen D.
    Corporate Authors:
    United States, National Weather Service., Southern Region., Scientific Services Division,
    Published Date:
    1974
    Series:
    NOAA technical memorandum NWS SR ; 77
    File Type:
    Filetype[PDF - 522.96 KB]
  • Initial results from long-term measurements of atmospheric humidity and related parameters in the marine boundary layer at two locations in the Gulf of Mexico
    Personal Author:
    Breaker, L. C.; Gilhousen, David B.; Tolman, H. L. (Hendrik Lieuwe), 1961-; Burroughs, Lawrence D.;
    Corporate Authors:
    National Centers for Environmental Prediction (U.S.)
    Published Date:
    1996
    Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 414
    OPC contribution ; no. 124
    File Type:
    Filetype[PDF - 2.60 MB]
  • Idaho zone preformat, temperature guidance, and verification
    Personal Author:
    Mollner, Mark A.
    Corporate Authors:
    United States, National Weather Service., Western Region,
    Published Date:
    1991
    Series:
    NOAA technical memorandum NWS WR ; 213
    Description:
    "A suite of AFOS application programs was developed to provide temperature guidance for remote zone locations, save forecaster preparation time, and generate verification statistics for the Idaho zone forecasts. They also provide winter and summer te...
    File Type:
    Filetype[PDF - 2.26 MB]
  • Implementation in the NCEP GFS of a Hybrid Eddy-Diffusivity Mass-Flux (EDMF) Boundary Layer Parameterization with Dissipative Heating and Modified Stable Boundary Layer Mixing
    Personal Author:
    Han, J.; Witek, M. L.; Teixeira, J.; Sun, R.; Pan, H. L.; Fletcher, J. K.; Bretherton, C. S.;
    Published Date:
    2016
    Source:
    Weather and Forecasting, 31(1), 341-352.
    Description:
    The current operational eddy-diffusivity countergradient (EDCG) planetary boundary layer (PBL) scheme in the NCEP Global Forecast System (GFS) tends to underestimate the PBL growth in the convective boundary layer (CBL). To improve CBL growth, an edd...
    File Type:
    Filetype[PDF - 1.73 MB]
  • SSI Analysis System 2004
    Corporate Authors:
    National Centers for Environmental Prediction (U.S.)
    Published Date:
    2004
    Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 443
    Description:
    "The Spectral Statistical Interpolation (SSI) analysis/assimilation system of NCEP's Global Forecast System was implemented in June of 1991. The initial version of SSI was presented in Parrish and Derber and Derber et al. (1991). The direct use of ra...
    File Type:
    Filetype[PDF - 214.83 KB]
  • Severe thunderstorms : two case studies : severe weather in northwesterly flow ; July thunderstorm produces large hail in Miami, Florida
    Personal Author:
    May, H. T.; Biedinger, Raymond E.;
    Corporate Authors:
    United States, National Weather Service., Southern Region., Scientific Services Division,
    Published Date:
    1984
    Series:
    NOAA technical memorandum NWS SR ; 111
    File Type:
    Filetype[PDF - 2.37 MB]
  • A revised National Hurricane Center NHC83 model (NHC90)
    Personal Author:
    Neumann, Charles J.; McAdie, Colin;
    Corporate Authors:
    National Hurricane Center (1965-1995)
    Published Date:
    1991
    Series:
    NOAA technical memorandum NWS NHC ; 44
    File Type:
    Filetype[PDF - 5.75 MB]
  • Hail in the Gray Maine County warning area
    Personal Author:
    Hayes, James C.
    Corporate Authors:
    United States, National Weather Service,
    Published Date:
    2008
    Series:
    Eastern Region technical attachment (National Weather Service (U.S.)) ; no. 2008-04
    Description:
    "The goal of this study was to develop a synoptic climatology of hail days in the Gray, ME (GYX) County Warning Area (CWA). Additionally, 'traditional' thermodynamic parameters for hail forecasting were reviewed, in order to determine their utility i...
    File Type:
    Filetype[PDF - 418.25 KB]
  • Development of lfm-based MOS temperature forecast equations for Alaska
    Personal Author:
    Dallavalle, J. Paul (Joseph Paul); Murphy, Mary C., (Meteorologist);
    Corporate Authors:
    United States, National Weather Service., Techniques Development Laboratory,
    Published Date:
    1983
    Series:
    TDL office note ; 83-14
    File Type:
    Filetype[PDF - 4.43 MB]
  • NWR voice synthesis project : Phase I
    Personal Author:
    Sampson, Glen W.
    Corporate Authors:
    United States, National Weather Service., Western Region,
    Published Date:
    1986
    Series:
    NOAA technical memorandum NWS WR ; 192
    Description:
    "Voice synthesis technology within the last few years has made tremendous leaps and bounds in reducing the costs, and increasing the quality and capabilities of end user oriented systems. Descriptions of these new systems can be conveniently divided ...
    File Type:
    Filetype[PDF - 2.10 MB]
  • Climate of Astoria, Oregon
    Personal Author:
    McInerney, Mark A.
    Corporate Authors:
    United States, National Weather Service., Western Region,
    Published Date:
    1996
    Series:
    NOAA technical memorandum NWS WR ; 236
    Description:
    This publication was written to summarize basic climatological data for Astoria, Oregon and surrounding areas. The purpose is to bring information together for both the public and for weather forecasters. Most data was obtained from surface observati...
    File Type:
    Filetype[PDF - 2.05 MB]
  • Performance of operational objective 0-6 h quantitative precipitation forecasts relative to manual and model generated forecasts : a preliminary assessment
    Personal Author:
    Charba, Jerome P. (Jerome Paul), 1944-; Moeller, Joel T.; Yamamoto, Paul D.;
    Corporate Authors:
    United States, National Weather Service., Techniques Development Laboratory,
    Published Date:
    1988
    Series:
    NOAA technical memorandum NWS TDL ; 79
    Description:
    During the spring and summer of 1987, TDL's new, operational 0-6 h objective QPF product (OBJ) was verified and compared against three similarly verified NMC QPF products over the conterminous United States. The NMC products were a manually prepared ...
    File Type:
    Filetype[PDF - 28.91 MB]
  • Severe thunderstorm cases of July 1985 thru June 1986
    Personal Author:
    Hales, John E.; Crowther, Hugh G.;
    Corporate Authors:
    National Severe Storms Forecast Center (U.S.)
    Published Date:
    1987
    Series:
    NOAA technical memorandum NWS NSSFC ; 16
    File Type:
    Filetype[PDF - 3.14 MB]
  • The Red Herring Affair, modified semi-implicit methods revisited
    Personal Author:
    McPherson, Ronald D.; Polger, Paul D.;
    Corporate Authors:
    National Meteorological Center (U.S.)
    Published Date:
    1971
    Series:
    Office note (National Meteorological Center (U.S.)) ; 64
    Description:
    "The semi-implicit integration method has been studied at considerable length at NMC since the summer of 1969. It was then that an effort began to examine A. Robert's suggestion that the method offered considerable potential for reducing the computat...
    File Type:
    Filetype[PDF - 3.26 MB]
  • A Comparison of Soundings Retrieved from Polar Orbiter Radiances by Two Very Different Retrieval Algorithms
    Personal Author:
    O'Lenic, Edward A.
    Corporate Authors:
    National Meteorological Center (U.S.)
    Published Date:
    1984
    Series:
    Office note (National Centers for Environmental Prediction (U.S.)) ; 287
    Description:
    "This paper compares two sets of atmospheric vertical temperature profiles produced from NOAA-7 radiance measurements using two different methods. The first retrieval technique (here after referred to as R1) uses eigenvectors of covariance matrices o...
    File Type:
    Filetype[PDF - 972.42 KB]
  • Smoothing and interpolation in LFM-II output
    Personal Author:
    Shuman, Frederick G.
    Corporate Authors:
    National Meteorological Center (U.S.)
    Published Date:
    1978
    Series:
    Office note (National Meteorological Center (U.S.)) ; 165
    Description:
    Joe Gerrity and Jack Newell found that by adding the so-called G-smoother on the output grid ([delta] = 190.5 km at 60N) they reduced the noise in a very noisy 500 mb vorticity field. In eyeballing the charts, with and without the final G-smoother, I...
    File Type:
    Filetype[PDF - 1.20 MB]
  • The National Marine Verification Program, concepts and data management
    Personal Author:
    Burroughs, Lawrence D.; Nichols, Regina;
    Corporate Authors:
    National Meteorological Center (U.S.)
    Published Date:
    1993
    Series:
    Contribution (NOAA Ocean Products Center) ; no. 69
    Office note (National Meteorological Center (U.S.)) ; no. 393
    Description:
    "The National Marine Verification Program (NMVP) is a component of the National Verification Program (NVP) of the National Weather Service (NWS). The NMVP was initiated about 1982 with a final report issued by the National Verification Committee (NVC...
    File Type:
    Filetype[PDF - 1.35 MB]
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