Weather and Forecasting: Recent submissions
Now showing items 2961-2980 of 3043
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Recent Changes to NMC's Analysis and Forecast Systems
(American Meteorological Society, 1989)no abstract -
Relationships of Several Stability Indices to Convective Weather Events in Northeast Colorado
(American Meteorological Society, 1989)Seven familiar stability indices were computed from sounding data for each of 83 days of a convection forecasting experiment conducted during the summer of 1985 in northeast Colorado. Observations of convectively driven ... -
Diagnosis of Anafronts and Katafronts
(American Meteorological Society, 1989)Diagnostic techniques are presented that aid in determining whether a cold front is of the anafront (upslope flow) or katafront (downslope flow) type, as well as in measuring the intensity of the vertical motions in the ... -
An Operational System for Specifying Monthly Precipitation Amounts over the United States from the Field of Concurrent Mean 700-mb Heights
(American Meteorological Society, 1989)This paper describes an operational system for specifying monthly precipitation amounts in the contiguous United States from the concurrent 700-mb monthly mean height field over North America and adjacent oceans. Multiple ... -
An Objective Basis for Forecasting Tornado Intensity
(American Meteorological Society, 1989)Although violent tornadoes comprise only 2.3% of tornado occurrences in the United States, they cause 68% of the fatalities attributed to tornadoes and severe thunderstorms. Despite these statistics, no attempt is made to ... -
Analysis of Expert Judgment in a Hail Forecasting Experiment
(American Meteorological Society, 1989)This study compared meteorologists, an expert system, and simple weighted-sum models in a limited-information hail forecasting experiment. It was found that forecasts made by meteorologists were closely approximated by an ... -
Short-Range Forecasting and Nowcasting Using a Simple, Isentropic Prediction Model
(American Meteorological Society, 1989)The recent advancement of mini- and microcomputers into the local-work environment can provide local forecast offices with the capability to run simple numerical models for specific nowcasting and short-term forecast needs. ... -
Editorial
(American Meteorological Society, 1989) -
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Comments on “The Diagnosis of Synoptic-Scale Vertical Motion in an Operational Environment”
(American Meteorological Society, 1988)No abstract available -
The Relationship between Satellite-Inferred Frontogenesis and Squall Line Formation
(American Meteorological Society, 1988)A study of three years of GOES satellite imagery has been conducted to determine whether synthesis of the imagery with surface diagnostic analyses may prove useful for predicting the precise location and time of formation ... -
The Great Arctic Outbreak and East Coast Blizzard of February 1899
(American Meteorological Society, 1988)An unprecedented period of extreme cold accompanied by an intense East Coast blizzard during February 1899 is documented through an examination of detailed surface weather charts constructed from original data. The surface ... -
Omega Diagnosis of a Cold Vortex with Severe Convection
(American Meteorological Society, 1988)A real-time quasi-geostrophic omega diagnostic scheme, based on Hoskins' Q-vector analysis and developed by Barnes, was applied to a cold mesoscale vortex with severe convection over northeast China in summer. The limited ... -
A Comparison of Temperature and Precipitation Forecasts Issued by Telecasters and the National Weather Service
(American Meteorological Society, 1988)Late evening weather forecasts by telecasters at major network television stations in seven United States cities, and corresponding forecasts from the National Weather Service, were monitored by meteorology students for 6 ... -
An Objective Comparison of Model Output Statistics and “Perfect Prog” Systems in Producing Numerical Weather Element Forecasts
(American Meteorological Society, 1988)The ?perfect prog? (PP) and model output statistics (MOS) approaches were used to develop multiple linear regression equations to forecast probabilities of more than a trace of precipitation over 6-h periods, probabilities ... -
Vertical Motion Evaluation of a Colorado Snowstorm from a Synoptician's Perspective
(American Meteorological Society, 1988)The causes of vertical motions associated with a September snowstorm which resulted in a heavy snowband in northeastern Colorado have been examined from a synoptician's perspective. The aim of the examination is to look ... -
Grady Norton: Hurricane Forecaster and Communicator Extraordinaire
(American Meteorological Society, 1988)No abstract available -
A Minimal Model for the Short-Term Prediction of Rainfall in the Tropics
(American Meteorological Society, 1988)A ?minimal? model is proposed here for the short-term prediction (up to 12 h ahead) of precipitation occurrence in the tropics. The model is purely statistical, consisting of an optimally weighted linear combination of a ... -
A Winter Mesocyclone over the Midwestern United States
(American Meteorological Society, 1988)A diagonostic analysis is made of a midwinter mesoscale vortex that developed over the Mississippi Valley and produced moderate to heavy snow with gale force winds (>18 m s?1), lightning, and thunder along a narrow track ... -
The Role of Latent Heat Release in Explosive Cyclogenesis: Three Examples Based on ECMWF Operational Forecasts
(American Meteorological Society, 1988)Operational forecasts from the European Centre for Medium Range Weather Forecasts of three cases of explosive cyclogenesis of large magnitude that occurred in the North Atlantic during a 1-week period in January 1986 are ...