The authors appreciate the early support of the COMET grant for An Interactive Climate System for Predicting Significant Weather Events, UCAR S03-44672. That project formed the foundation of this research. The authors also thank the reviewers of the paper for their insights and very helpful suggestions.
Changnon, S. A., , K. E. Kunkel, , and B. C. Reinke, 1996: Impacts and responses to the 1995 heat wave: A call to action. Bull. Amer. Meteor. Soc., 77 , 1497–1506.
El-Kadi, A. K., , and P. A. Smithson, 1996: An automated classification of pressure patterns over the British Isles. Trans. Inst. Br. Geogr., 21 , 141–156.
Freedman, D., , and P. Diaconis, 1981b: On the histogram as a density estimator: L2 theory. Z. Wahrscheinlichkeitstheor. Verw. Gebeite, 57 , 453–476.
Grumm, R. H., , and R. Hart, 2001: Standardized anomalies applied to significant cold season weather events: Preliminary findings. Wea. Forecasting, 16 , 736–754.
Hart, R. H., , and R. H. Grumm, 2001: Using normalized climatological anomalies to rank synoptic-scale events objectively. Mon. Wea. Rev., 129 , 2426–2442.
Kirchhofer, W., 1973: Classification of European 500 mb patterns. Swiss Meteorological Institute No. 43, Zurich, Switzerland.
Kistler, R., and Coauthors, 2001: The NCEP–NCAR 50-Year Reanalysis: Monthly means CD-ROM and documentation. Bull. Amer. Meteor. Soc., 82 , 247–267.
Knight, P. G., , and M. E. Evans, 2000: Prediction of excessive rainfall in the Middle Atlantic region. Preprints, Second Conf. on Extreme Precipitation, Long Beach, CA, Amer. Meteor. Soc., 96–98.
Kruizinga, S., , and A. H. Murphy, 1983: Use of an analog procedure to formulate objective probabilistic temperature forecasts in the Netherlands. Mon. Wea. Rev., 111 , 2244–2254.
Livezey, R. E., , and R. Tinker, 1996: Some meteorological, climatological, and microclimatological considerations of the severe U.S. heat wave of mid-July 1995. Bull. Amer. Meteor. Soc., 77 , 2043–2054.
Mckendry, I. G., 1994: Synoptic circulation and summertime ground-level ozone concentrations at Vancouver, British Columbia. J. Appl. Meteor., 33 , 627–641.
Namias, J., 1982: Anatomy of Great Plains protracted heat waves (especially the 1980 summer drought). Mon. Wea. Rev., 110 , 824–838.
Rogers, E., , D. Parrish, , Y. Lin, , and G. DiMego, 1996: The NCEP Eta data assimilation system: Tests with regional 3-D variational analysis and cycling. Preprints, 11th Conf. on Numerical Weather Prediction, Norfolk, VA, Amer. Meteor. Soc., 105–106.
Rogers, E., and Coauthors, 1997: Changes to the NCEP operational “early” Eta analysis/forecast system. NOAA/NWS Tech. Procedures Bulletin 447, 16 pp. [Available from Office of Meteorology, National Weather Service, 1325 East–West Highway, Silver Spring, MD 20910.].
Uccellini, L. W., , and P. J. Kocin, 1987: The interaction of jet streak circulations during heavy snow events along the East Coast of the United States. Wea. Forecasting, 2 , 289–308.
Uccellini, L. W., , P. J. Kocin, , R. S. Schneider, , P. M. Stokols, , and R. A. Dorr, 1995: Forecasting the 12–14 March 1993 superstorm. Bull. Amer. Meteor. Soc., 76 , 183–199.
Vislocky, R. L., , and G. S. Young, 1989: The use of perfect prog forecasts to improve model output statistics forecasts of precipitation probability. Wea. Forecasting, 4 , 202–209.