We thank Stan Benjamin for providing us with MAPS data and Jim Pasquotto for his assistance in preparing the manuscript and figures and with the Web page.
Afanasyev, Y. D., and W. R. Peltier, 1998: The three-dimensionalization of stratified flow over two-dimensional topography. J. Atmos. Sci.,55, 19–39.
Andreassen, O., C. E. Wasberg, D. C. Fritts, and J. R. Isler, 1994: Gravity wave breaking in two and three dimensions. 1. Model description and comparison of two-dimensional evolutions. J. Geophys. Res.,99 (D), 8095–8108.
Armi, L., and R. Williams, 1993: The hydraulics of a stratified fluid flowing through a contraction. J. Fluid Mech.,251, 355–375.
Benjamin, S. G., K. J. Brundage, and L. L. Morone, 1994: The rapid update cycle. Part 1: Analysis/model description. Tech. Procedures Bull. 416, 16 pp. [Available from NOAA/NWS, Mary Howell, 13205 W/OM21 SSMC #2, 1325 East–West Highway, Silver Spring, MD 20910.].
Bennetts, D. A., and B. J. Hoskins, 1979: Conditional symmetric instability—A possible explanation for frontal rainbands. Quart. J. Roy. Meteor. Soc.,105, 945–962.
Bernard, A., D. Demaiffe, N. Mattielli, and R. S. Punongbayan, 1991:Anhydrite-bearing pumices from Mount Pinatubo: Further evidence for the existence of sulphur-rich silicic magmas. Nature,354, 139–140.
Brinkmann, W. A. R., 1974: Strong downslope winds at Boulder, Colorado. Mon. Wea. Rev.,102, 592–602.
Browand, F. K., and C. D. Winant, 1973: Laboratory observations of shear-layer instability in a stratified fluid. Bound.-Layer Meteor.,5, 67–77.
Caulfield, C. P., 1994: Multiple linear instability of layered stratified shear flow. J. Fluid Mech.,258, 255–285.
Clark, T. L., 1977: A small scale numerical model using a terrain following coordinate transformation. J. Comput. Phys.,24, 186–215.
——, and W. R. Peltier, 1977: On the evolution and stability of finite-amplitude mountain waves. J. Atmos. Sci.,34, 1715–1730.
——, and W. R. Farley, 1984: Severe downslope windstorm calculations in two and three spatial dimensions using anelastic interactive grid nesting: A possible mechanism for gustiness. J. Atmos. Sci.,41, 329–350.
——, and W. D. Hall, 1991: Multi-domain simulations of the time dependent Navier Stokes equations: Benchmark error analyses of some nesting procedures. J. Comput. Phys.,92, 456–481.
——, and ——, 1996: The design of smooth, conservative vertical grids for interactive grid nesting with stretching. J. Appl. Meteor.,35, 1040–1046.
——, ——, and R. M. Banta, 1994: Two-and three-dimensional simulations of the 9 Jan 1989 severe Boulder windstorm: Comparison with observations. J. Atmos. Sci.,51, 2317–2343.
——, T. Keller, J. Coen, P. Neilley, H.-M. Hsu, and W. D. Hall, 1997:Terrain-induced turbulence over Lantau Island: 7 June 1994 Tropical Storm Russ case study. J. Atmos. Sci.,54, 1795–1814.
Durran, D. R., 1995: Do breaking mountain waves decelerate the local mean flow? J. Atmos. Sci.,52, 4010–4032.
FAA, 1985: Federal aviation regulations. Part 25—Airworthiness standards, transport category airplanes. Federal Aviation Administration, 112 pp. Available from Superintendent of Documents, U.S. Government Printing Office, Washington, DC 20402.
Fritts, D. C., and Z. Luo, 1992: Gravity wave excitation by geostrophic adjustment of the jet stream. Part I: Two-dimensional forcing. J. Atmos. Sci.,49, 681–697.
——, J. R. Isler, and O. Andreassen, 1994: Gravity wave breaking in two and three dimensions. 2. Three-dimensional evolution and instability structure. J. Geophys. Res.,99 (D), 8109–8023.
Hamming, R. W., 1983: Digital Filters. Prentice-Hall, 257 pp.
Holmboe, J., 1962: On the behavior of symmetric waves in stratified shear layers. Geofys. Publ.,24, 67–61.
Isler, J. R., D. C. Fritts, O. Andreassen, and C. E. Wasberg, 1994: Gravity wave breaking in two and three dimensions. 3. Vortex breakdown and transition to isotropy. J. Geophys. Res.,99 (D4), 8125–8137.
Jones, S., and A. J. Thorpe, 1992: The three-dimensional nature of“symmetric” instability. Quart. J. Roy. Meteor. Soc.,118, 227–258.
Kerr, R. M., J. A. Domaradzki, and G. Barbier, 1996: Small-scale properties of nonlinear interactions and subgrid-scale energy transfer in isotropic turbulence. Phys. Fluids,8, 197–208.
Klaassen, G. P., and W. R. Peltier, 1989: The role of transverse secondary instabilities in the evolution of free shear layers. J. Fluid Mech.,202, 367–402.
Klemp, J. B., and D. K. Lilly, 1978: Numerical simulation of hydrostatic mountain waves. J. Atmos. Sci.,35, 78–107.
Koscielny, A. J., R. J. Doviak, and R. Rabin, 1982: Statistical considerations in the estimation of divergence from a single Doppler radar and application to prestorm boundary-layer observations. J. Appl. Meteor.,21, 197–210.
Ley, B. E., and W. R. Peltier, 1978: Wave generation and frontal collapse. J. Atmos. Sci.,35, 3–17.
Lilly, D. K., and E. J. Zipser, 1972: The front range windstorm of 11 January 1972: A meteorological narrative. Weatherwise,25, 56–63.
——, and P. J. Kennedy, 1973: Observations of a stationary mountain wave and its associated momentum flux and energy dissipation. J. Atmos. Sci.,30, 1135–1152.
——, J. M. Nicholls, R. M. Chervin, P. J. Kennedy, and J. B. Klemp, 1982: Aircraft measurements of wave momentum flux over the Colorado Rocky Mountains. Quart. J. Roy. Meteor. Soc.,108, 625–642.
May, P. T., K. P. Moran, and R. G. Strauch, 1989: The accuracy of RASS temperature profiles. J. Appl. Meteor.,28, 1329–1335.
McCormick, B. W., 1995: Aerodynamics, Aeronautics, and Flight Mechanics. 2d ed. John Wiley and Sons, 652 pp.
Moran, K. P., and R. G. Strauch, 1994: The accuracy of RASS temperature measurements corrected for vertical air motions. J. Atmos. Oceanic Technol.,11, 995–1001.
Neiman, P. J., R. M. Hardesty, M. A. Shapiro, and R. E. Cupp, 1988:Doppler lidar observations of a downslope windstorm. Mon. Wea. Rev.,116, 2265–2275.
——, P. T. May, and M. A. Shapiro, 1992: Radio Acoustic Sounding System (RASS) and wind profiler observations of lower and midtropospheric weather systems. Mon. Wea. Rev.,120, 2298–2313.
O’Sullivan, D., and T. J. Dunkerton, 1995: Generation of inertia–gravity waves in a simulated life cycle of baroclinic instability. J. Atmos. Sci.,52, 3695–3716.
Peltier, W. R., and T. L. Clark, 1979: The evolution and stability of finite amplitude mountain waves—II: Mountain wave drag and severe downslope windstorms. J. Atmos. Sci.,36, 1499–1529.
——, and ——, 1983: Non-linear mountain waves in two and three spatial dimensions. Quart. J. Roy. Meteor. Soc.,109, 527–548.
Pierrehumbert, R. T., and B. Wyman, 1985: Upstream effects of mesoscale mountains. J. Atmos. Sci.,42, 977–1003.
Post, M. J., and R. E. Cupp, 1990: Optimizing a pulsed Doppler lidar. Appl. Opt.,29, 4145–4158.
——, A. Weickmann, K. R. Healy, R. J. Willis, and C. Grund, 1996:Comparison of Mount Pinatubo and El Chichon volcanic events:Lidar observations at 10.6 and 0.69 μm. J. Geophys. Res.,101, 3929–3940.
Ralph, F. M., M. Crochet, and S. V. Venkateswaran, 1992: A study of mountain lee waves using clear-air radar. Quart. J. Roy. Meteor. Soc.,118, 597–627.
——, P. J. Neiman, and D. Levinson, 1997: Lidar observations of a breaking mountain wave associated with extreme turbulence. Geophys. Res. Lett.,24, 663–666.
Rayleigh, Lord, 1880: On the stability and instability of certain fluid motions. Proc. London. Math. Soc.,11, 57–75.
Richard, E., P. Mascart, and E. C. Nickerson, 1989: The role of surface friction in downslope windstorms. J. Appl. Meteor.,28, 241–251.
Rottman, J. W., and R. B. Smith, 1989: A laboratory model of severe downslope winds. Tellus,41A, 401–415.
Schwartz, B., 1996: The quantitative use of PIREPS in developing aviation weather guidance products. Wea. Forecasting,11, 372–384.
Silvers, C. L., and C. C. Withers, 1975: Evaluation of the flying qualities requirements of MIL-F-8785B. Air Force Flight Dynamics Lab Rep. AFFDL-TR-75-3, 333 pp. NTIS AD-A011 728/3/XAB.
Smith, R. B., 1976: The generation of lee waves by the Blue Ridge. J. Atmos Sci.,33, 507–519.
——, 1987: Aerial observations of the Yugoslavian Bora. J. Atmos. Sci.,44, 269–297.
Smyth, W. D., G. P. Klaassen, and W. R. Peltier, 1988: Finite amplitude Holmboe waves. Geophys. Astrophys. Fluid Dyn.,43, 181–222.
van Tuyl, A. H., and J. A. Young, 1982: Numerical simulation of nonlinear jet streak adjustment. Mon. Wea. Rev.,110, 2038–2054.