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RISThe Catalina Eddy Event of July 1987: A Coastally Trapped Mesoscale Response to Synoptic Forcing
Publisher: American Meteorological Society
Abstract: The Catalina eddy that existed from 5 July to 12 July 1987 during FIRE (First ISSCP Regional Experiment) over offshore California is analyzed. There were two stages to the eddy's lifecycle. During the first, from 5 July ...
Forecasting Tornadoes Using Convection-Permitting Ensembles
Publisher: American Meteorological Society
Abstract: ourly maximum fields of simulated storm diagnostics from experimental versions of convection-permitting models (CPMs) provide valuable information regarding severe weather potential. While past studies have focused on ...
Evaluation of and Suggested Improvements to the WSM6 Microphysics in WRF-ARW Using Synthetic and Observed GOES-13 Imagery
Publisher: American Meteorological Society
Abstract: ynthetic satellite imagery can be employed to evaluate simulated cloud fields. Past studies have revealed that the Weather Research and Forecasting (WRF) single-moment 6-class (WSM6) microphysics scheme in the Advanced ...
Impact of Storm-Scale Lightning Data Assimilation on WRF-ARW Precipitation Forecasts during the 2013 Warm Season over the Contiguous United States
Publisher: American Meteorological Society
Abstract: his work evaluates the performance of a recently developed cloud-scale lightning data assimilation technique implemented within the Weather Research and Forecasting Model running at convection-allowing scales (4-km grid ...
Extracting Unique Information from High-Resolution Forecast Models: Monitoring Selected Fields and Phenomena Every Time Step
Publisher: American Meteorological Society
Abstract: A new strategy for generating and presenting model diagnostic fields from convection-allowing forecast models is introduced. The fields are produced by computing temporal-maximum values for selected diagnostics at each ...
Evaluation of a Cloud-Scale Lightning Data Assimilation Technique and a 3DVAR Method for the Analysis and Short-Term Forecast of the 29 June 2012 Derecho Event
Publisher: American Meteorological Society
Abstract: his work evaluates the short-term forecast (≤6 h) of the 29?30 June 2012 derecho event from the Advanced Research core of the Weather Research and Forecasting Model (WRF-ARW) when using two distinct data assimilation ...
Evolution of WRF-HAILCAST during the 2014–16 NOAA/Hazardous Weather Testbed Spring Forecasting Experiments
Publisher: American Meteorological Society
Abstract: Four different versions of the HAILCAST hail model have been tested as part of the 2014?16 NOAA Hazardous Weather Testbed (HWT) Spring Forecasting Experiments. HAILCAST was run as part of the National Severe Storms Laboratory ...
Incorporating UH Occurrence Time to Ensemble-Derived Tornado Probabilities
Publisher: American Meteorological Society
Abstract: Probabilistic ensemble-derived tornado forecasts generated from convection-allowing models often use hourly maximum updraft helicity (UH) alone or in combination with environmental parameters as a proxy for right-moving ...
Blended Probabilistic Tornado Forecasts: Combining Climatological Frequencies with NSSL–WRF Ensemble Forecasts
Publisher: American Meteorological Society
Abstract: AbstractAttempts at probabilistic tornado forecasting using convection-allowing models (CAMs) have thus far used CAM attribute [e.g., hourly maximum 2?5-km updraft helicity (UH)] thresholds, treating them as binary ...
A Feasibility Study for Probabilistic Convection Initiation Forecasts Based on Explicit Numerical Guidance
Publisher: American Meteorological Society
Abstract: Spring Forecasting Experiment in the NOAA Hazardous Weather Testbed (HWT) featured a significant component on convection initiation (CI). As in previous HWT experiments, the CI study was a collaborative effort between ...