Overshooting Convective Cloud Top Detection A GOES-R Future Capability Product GOES-East (-8/-12/-13) OT Detections at Full Spatial and Temporal Resolution, 0.25 Degree Resolution Grid Animation Normalized By The Number of Scans In Each Two-Hour Period Kristopher Bedka NASA LaRC): in collaboration with UW-CIMSS and NASA A method to objectively detect overshooting convective cloud tops (OTs) and the enhanced-V signature has been developed in support of the GOES-R Aviation Algorithm Working Group Publications have shown good correlation between OT detections, severe weather reports, objective in-situ aviation turbulence, LMA total lightning observations, and a long-term climatology of cloud-to-ground lightning The OT detection product has been evaluated within the NOAA Hazardous Weather and Aviation Weather Testbeds and the 2012 European Severe Storms Laboratory Testbed Testbed evaluations indicate that the product is consistent in accurate detection of OT signatures, but detection capability is impacted the relatively coarse spatial and temporal resolution of current GOES. Analysis shows that detection rate may increase ten-fold when the algorithm is applied to 2 km and 5 min ABI data Evaluations also suggest that the product can provide valuable situational situational awareness over data-rich regions and could be used to pinpoint hazardous areas within thunderstorms over data-poor land and ocean regions

Overshooting Convective Cloud Top Detection A Severe Weather Situational Awareness and Decision Aid Severe Storm Reports +/- 15 mins From Image Severe weather is occurring near active updraft regions that can be objectively detected via IR spatial gradients and temperature thresholding combined with NWP tropopause information Severe Weather Type # Severe ReportsOT Match % Tornado4, % Severe Wind52, % Large Hail56, % Any Type113, % Frequency of Overshooting Top Detection Near Confirmed Severe Weather Events: April-September HOURS OF OT DETECTIONS VS. SEVERE WEATHER REPORTS: Joplin, MO Tornado Event Satellite-Based Overshooting Top Detections Often Precede NWS Severe Weather Warnings By 20 Mins, Providing Valuable Situational Awareness Of A Hazardous Thunderstorm (Dworak et al. WAF, 2012)

Frequency of Any Turbulence Intensity At Varying Radius From GOES Overshooting Top Detections United Airlines Boeing 757s: Over CONUS Overshooting Convective Cloud Top Detection AWC Testbed Evaluation and Aviation Turbulence Relationships SEVERE TURBULENCE 10 TIMES MORE LIKELY WHEN AIRCRAFT FLY WITHIN 5 KM OF AN OT DETECTION VS. SPATIALLY UNIFORM CLOUD TOP (Bedka et al., JAMC 2010) Turbulence reported within 10 km of OT detection