Welcome to the NOAA Institutional Repository | Development of a probability equation for winter-type precipitation patterns in Great Falls, Montana - :6459 | Office of Oceanic and Atmospheric Research (OAR) | National Weather Service (NWS)
Stacks Logo
Advanced Search
Select up to three search categories and corresponding keywords using the fields to the right. Refer to the Help section for more detailed instructions.
 
 
Help
Clear All Simple Search
Advanced Search
Development of a probability equation for winter-type precipitation patterns in Great Falls, Montana
  • Published Date:
    1978
Filetype[PDF - 1.66 MB]


Details:
  • Personal Authors:
  • Corporate Authors:
    United States, National Weather Service., Western Region,
  • Series:
    NOAA technical memorandum NWS WR ; 127
  • Document Type:
  • Description:
    Four parameters known to be reliable predictors of winter-type precipitation patterns (Oct-Mar) at Great Falls, Montana, are analyzed independently and then integrated into a probability of measurable precipitation equation. Five hundred fifty-one (551) cases are studied involving surface and upper-air data. The occurrence of precipitation at Great Falls, Montana, is strongly dependent upon the development of upslope conditions along the east slopes of the Rocky Mountains in Montana. Successive graphical regression analysis is first used to show the strength of the four parameters collectively. A probability equation is then developed by a linear regression program. The derived equation is compared with the Model Output Statistics and is shown to have practical value as a forecast tool.

  • Supporting Files:
    No Additional Files