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Isentropic Analysis of a Dry Line Bulge and the “Real Weather” Implications

Isentropic Analysis of a Dry Line Bulge and the “Real Weather” Implications. By Mark L. Bogner Assistant Chief Meteorologist KSNW-TV, Wichita. Already Known About Dry Line. Bulges develop when short wave comes out Dry line may “surge” as well Favored area for severe weather development

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Isentropic Analysis of a Dry Line Bulge and the “Real Weather” Implications

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  1. Isentropic Analysis of a Dry Line Bulge and the “Real Weather” Implications By Mark L. Bogner Assistant Chief Meteorologist KSNW-TV, Wichita

  2. Already Known About Dry Line • Bulges develop when short wave comes out • Dry line may “surge” as well • Favored area for severe weather development • Especially just along and north of the “axis” of the bulge

  3. An Orientation to the “KSN Look” of Isentropic Analysis

  4. Dry Line Forecast By NAM in June of ‘06

  5. Area of Maximum Downglide

  6. Area of Maximum Upglide

  7. Final Points • Important to check MANY levels to find the “effective” layer • Watch the ISENTROPIC wind field along the boundary • Upglide forcing results in rapid destabilization and/or cap erosion

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