Weather and Forecasting: Recent submissions
Now showing items 921-940 of 3043
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Topographic and Boundary Influences on the 22 May 2014 Duanesburg, New York, Tornadic Supercell
(American Meteorological Society, 2015)he 22 May 2014 Duanesburg, New York, supercell produced an enhanced Fujita scale category 3 (EF3) tornado and 10-cm-diameter hail. The synoptic setup for the event was ambiguous compared to other documented cases of Northeast ... -
Operational Wave Prediction System at Environment Canada: Going Global to Improve Regional Forecast Skill
(American Meteorological Society, 2015)global deterministic wave prediction system (GDWPS) is used to improve regional forecasts of waves off the Canadian coastline and help support the practice of safe marine activities in Canadian waters. The wave model has ... -
A Qualitative Analysis of NWS Forecasters’ Use of Phased-Array Radar Data during Severe Hail and Wind Events
(American Meteorological Society, 2015)he 2013 Phased Array Radar Innovative Sensing Experiment (PARISE) investigated the impacts of higher-temporal-resolution radar data on National Weather Service forecasters? warning decision processes during severe hail and ... -
An Impact Study of GPS Radio Occultation Observations on Frontal Rainfall Prediction with a Local Bending Angle Operator
(American Meteorological Society, 2015)he impact of global positioning system (GPS) radio occultation (RO) soundings on the prediction of severe mei-yu frontal rainfall near Taiwan in June 2012 was investigated in this study using a developed local bending angle ... -
Forewarned is Forearmed: Extended-Range Forecast Guidance of Recent Extreme Heat Events in Australia
(American Meteorological Society, 2015)here has been increasing demand in Australia for extended-range forecasts of extreme heat events. An assessment is made of the subseasonal experimental guidance provided by the Bureau of Meteorology?s seasonal prediction ... -
A Forecast Advisory for Afternoon Thunderstorm Occurrence in the Taipei Basin during Summer Developed from Diagnostic Analysis
(American Meteorological Society, 2016)ummer is a dry season in northern Taiwan. By contrast, the Taipei basin, located in this region, has its maximum rainfall during summer (15 June?31 August), when 78% of this rainfall is contributed by afternoon thunderstorms. ... -
Double Impact: When Both Tornadoes and Flash Floods Threaten the Same Place at the Same Time
(American Meteorological Society, 2015)hile both tornadoes and flash floods individually present public hazards, when the two threats are both concurrent and collocated (referred to here as TORFF events), unique concerns arise. This study aims to evaluate the ... -
Rapid-Update Radar Observations of Downbursts Occurring within an Intense Multicell Thunderstorm on 14 June 2011
(American Meteorological Society, 2016)n 14 June 2011, an intense multicell thunderstorm produced one nonsevere and three severe downbursts within 35 km of the rapid-update, S-band phased array radar (PAR) at the National Weather Radar Testbed in Norman, Oklahoma, ... -
Application of Optimal Spectral Sampling for a Real-Time Global Cloud Analysis Model
(American Meteorological Society, 2016)he Cloud Depiction and Forecast System version 2 (CDFS II) is the operational global cloud analysis and forecasting model of the 557th Weather Wing, formerly the U.S. Air Force Weather Agency. The CDFS II cloud-detection ... -
An Automated, Multiparameter Dryline Identification Algorithm
(American Meteorological Society, 2015)oisture boundaries, or drylines, are common over the southern U.S. high plains and are one of the most important airmass boundaries for convective initiation over this region. In favorable environments, drylines can initiate ... -
Regional Soil Moisture Biases and Their Influence on WRF Model Temperature Forecasts over the Intermountain West
(American Meteorological Society, 2015)perational Weather Research and Forecasting (WRF) Model forecasts run over Dugway Proving Ground (DPG) in northwest Utah, produced by the U.S. Army Test and Evaluation Command Four-Dimensional Weather System (4DWX), ... -
Northwest Flow Snow Aspects of Hurricane Sandy
(American Meteorological Society, 2015)n late October 2012, Hurricane Sandy tracked along the eastern U.S. coastline and made landfall over New Jersey after turning sharply northwest and becoming posttropical while interacting with a complex upper-level low ... -
Anomaly-Based Weather Analysis versus Traditional Total-Field-Based Weather Analysis for Depicting Regional Heavy Rain Events
(American Meteorological Society, 2015)lthough the use of anomaly fields in the forecast process has been shown to be useful and has caught forecasters? attention, current short-range (1?3 days) weather analyses and forecasts are still predominantly total-field ... -
Understanding Public Hurricane Evacuation Decisions and Responses to Forecast and Warning Messages
(American Meteorological Society, 2015)his study uses data from a survey of coastal Miami-Dade County, Florida, residents to explore how different types of forecast and warning messages influence evacuation decisions, in conjunction with other factors. The ... -
Precipitation Nowcasting with Three-Dimensional Space–Time Extrapolation of Dense and Frequent Phased-Array Weather Radar Observations
(American Meteorological Society, 2015)he phased-array weather radar (PAWR) is a new-generation weather radar that can make a 100-m-resolution three-dimensional (3D) volume scan every 30 s for 100 vertical levels, producing ~100 times more data than the ... -
A ZDR Column Detection Algorithm to Examine Convective Storm Updrafts
(American Meteorological Society, 2015)bservations and recent high-resolution numerical model simulations indicate that liquid water and partially frozen hydrometeors can be lofted considerably above the environmental 0°C level in the updrafts of convective ... -
Prediction of Intensity Model Error (PRIME) for Atlantic Basin Tropical Cyclones
(American Meteorological Society, 2015)tatistical methods are used to develop the Prediction of Intensity Model Error (PRIME) for both the absolute error and bias of intensity forecasts of Atlantic basin tropical cyclones from 2007 to 2014. These forecasts of ... -
Improvements in Typhoon Intensity Change Classification by Incorporating an Ocean Coupling Potential Intensity Index into Decision Trees
(American Meteorological Society, 2015)ropical cyclone (TC) intensity prediction, especially in the warning time frame of 24?48 h and for the prediction of rapid intensification (RI), remains a major operational challenge. Sea surface temperature (SST) based ... -
Improved Nowcasts by Blending Extrapolation and Model Forecasts
(American Meteorological Society, 2015)lanning and managing commercial airplane routes to avoid thunderstorms requires very skillful and frequently updated 0?8-h forecasts of convection. The National Oceanic and Atmospheric Administration?s High-Resolution Rapid ... -
Characteristics and Synoptic Environment of Drylines Occurring over the Higher Terrain of Southeastern Wyoming
(American Meteorological Society, 2015)ommonly observed over the broadly sloped terrain of the southern Great Plains (SGP), drylines are frequent loci of warm season deep convection and have been the focus of numerous observational, theoretical, and climatological ...