| Climatology of CAPE for eastern Montana and northern Wyoming - :14072 | National Weather Service (NWS)
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Climatology of CAPE for eastern Montana and northern Wyoming
  • Published Date:
Filetype[PDF-1.90 MB]

  • Corporate Authors:
    United States, National Weather Service., Western Region.
  • Description:
    Development of a warm season climatology of Convective Available Potential Energy (CAPE) for the Northern Plains Region of eastern Montana and northern Wyoming provides forecasters with typical convective energy values. These typical CAPE values may be used to isolate standard and anomalous convective potential, both monthly and seasonally. To derive the CAPE averages, daily values of 0000 UTC and 1200 UTC CAPE from April through September during the 1961-1991 time period were analyzed using the SHARP Workstation and the statistical applications inherent in Quattro Pro. The averages and statistics show that July is the month for the greatest CAPE values with a 31 year average of 470 J kg-1 . In addition, seasonal average CAPE values isolate 1962, 1963,1982, and 1991 as those years having the greatest seasonal averages. Finally, the CAPE averages show that maximum daily CAPE values rarely exceed 1000 J kg-1 during most of the warm season.

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