Abstract: As part of the investigation into the problem of forecasting heavy snowstorms in the eastern and central United States, a synoptic climatology of the precipitation associated with winter storms has been derived. In order ...

Abstract: No Abstract Available.

Abstract: The observed polarization of the light emitted from certain illuminated areas in a ceilometer beam during rain is explained as due to the polarization of light rays by reflection and refraction in passing through the ...

Abstract: The Wadsworth-Bryan method of specifying atmospheric circulation patterns is used as a basis for developing a hurricane forecasting procedure. Regression equations have been calculated using persistency and circulation ...

Abstract: Variables obtained from synoptic sea level and upper air charts are investigated to determine their significance in the estimation of concurrent rainfall. Eight variables consisting of sea level pressures and pressure ...

Abstract: No Abstract Available.

Abstract: A chart for the graphical solution of the skill score is developed on the basis that the number of cases is held constant. A procedure is suggested by means of which the chart presented may be used for any number of cases. ...

Abstract: The issuance of forecasts in probabilistic terms introduces the problem of the measurement of the forecasting skill which goes into the preparation of this type of forecast. The applicability of the conventional skill score ...

Abstract: A 20-year record of winter precipitation data for San Francisco is used to determine frequencies of periods of rain and no-rain of various lengths and the frequencies of periods of a given type of weather followed by the ...

Abstract: The use of a moving class interval in calculating a skill score for a series of forecasts is investigated. When forecasts are expressed in quantitatively exact terms, it is found that the use of this type of interval in ...