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Contact: Ralph A. Petersen, Ralph.Petersen@ssec.wisc

AN OBJECTIVE NOWCASTING TOOL THAT OPTIMIZES THE IMPACT OF GOES DERIVE PRODUCT IMAGERY IN VERY-SHORT-RANGE FORECASTS AND NOWCASTS Ralph Petersen 1 and Robert Aune 2 1 Cooperative Institute for Meteorological Satellite Studies (CIMSS), University of Wisconsin – Madison

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Contact: Ralph A. Petersen, Ralph.Petersen@ssec.wisc

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  1. AN OBJECTIVE NOWCASTING TOOL THAT OPTIMIZES THE IMPACT OF GOES DERIVE PRODUCT IMAGERY IN VERY-SHORT-RANGE FORECASTS AND NOWCASTS Ralph Petersen1 and Robert Aune2 1Cooperative Institute for Meteorological Satellite Studies (CIMSS), University of Wisconsin – Madison 2 NOAA/NESDIS/ORA, NESDIS/Advanced Satellite Products Team, Madison, Wisconsin UW-Madison Nowcast Model Results CASE STUDY BACKGROUND Progression of convective system requires continual redevelopment and release of convective instability, whereby low level moisture is first trapped by subsiding dry air aloft which then moves away, allowing the trapped energy to be released Low-Level Moisture maximum initially over Iowa divides, with part moving eastward toward MSN and the other part moving later south of Chicago Mid-Level Dryness area initially over Southern Wisconsin moves steadily east-south-eastward, with convection occurring along western edge of dryness maximum ACKNOWLEDGMENT: This work was supported by the NESDIS GOES-R Risk Reduction Project through the NESDIS-UW CIMSS agreement. Contact: Ralph A. Petersen, Ralph.Petersen@ssec.wisc.edu

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