Weather and Forecasting: Recent submissions
Now showing items 2261-2280 of 3043
-
An Algorithm for the Detection of Fronts in Wind Profiler Data
(American Meteorological Society, 2001)An algorithm to detect frontal zones in time?height cross sections of horizontal wind from wind profiler measurements is described. The algorithm works by identifying regions with 1) a strong horizontal temperature gradient, ... -
A Tropical Cyclone Genesis Parameter for the Tropical Atlantic
(American Meteorological Society, 2001)A parameter to evaluate the potential for tropical cyclone formation (genesis) in the North Atlantic between Africa and the Caribbean islands is developed. Climatologically, this region is the source of about 40% of the ... -
The 21 June 1997 Flood: Storm-Scale Simulations and Implications for Operational Forecasting
(American Meteorological Society, 2001)On 20?21 June 1997, a convective outbreak in Nebraska, Iowa, Illinois, and Wisconsin resulted in two fatalities, eight injuries, and approximately $104 million in damage. The majority of the damage ($92 million) was the ... -
FORECASTER’S FORUM: Subjective Tornado Probability Forecasts in Severe Weather Watches
(American Meteorological Society, 2001)An experiment was conducted at the Storm Prediction Center (SPC) to assess the accuracy of subjective probability forecasts for tornadoes within individual convective watch areas. Probability forecasts for one or more and ... -
Further Investigation of a Physically Based, Nondimensional Parameter for Discriminating between Locations of Freezing Rain and Ice Pellets
(American Meteorological Society, 2001)The general applicability of an isonomogram developed by Czys and coauthors to diagnose the position of the geographic boundary between freezing precipitation (freezing rain or freezing drizzle) and ice pellets (sleet or ... -
Technique for Improving Detection of WSR-88D Mesocyclone Signatures by Increasing Angular Sampling
(American Meteorological Society, 2001)The Doppler velocity signature of a thunderstorm mesocyclone becomes increasingly degraded as distance from the radar increases. Degradation is due to the broadening of the radar beam with range relative to the size of the ... -
Normalized Damage from Major Tornadoes in the United States: 1890–1999
(American Meteorological Society, 2001)Historical records of damage from major tornadoes in the United States are taken and adjusted for inflation and wealth. Such adjustments provide a more reliable method to compare losses over time in the context of significant ... -
An Operational Ingredients-Based Methodology for Forecasting Midlatitude Winter Season Precipitation
(American Meteorological Society, 2001)An ingredients-based methodology (IM) for the operational analysis and prediction of midlatitude winter season precipitation is developed. Diagnostics for five fundamental physical ingredients involved in the production ... -
Verification of Supercooled Cloud Water Forecasts with In Situ Aircraft Measurements
(American Meteorological Society, 2001)In situ measurements of temperature (Ta), horizontal wind speed (V), dewpoint (Td), total water content (TWC), and cloud and supercooled cloud water (SCW) events, made during 50 flights from three research field programs, ... -
An Examination of Radar and Rain Gauge–Derived Mean Areal Precipitation over Georgia Watersheds
(American Meteorological Society, 2001)Compared to conventional rain gauge networks, the Weather Surveillance Radar-1988 Doppler provides precipitation estimates at enhanced spatial and temporal resolution that River Forecast Centers can use to improve streamflow ... -
Real-Time Low-Level Wind and Temperature Analysis Using Single WSR-88D Data
(American Meteorological Society, 2001)A four-dimensional variational Doppler radar analysis system (VDRAS) has been developed and implemented at a weather forecast office to produce real-time boundary layer wind and temperature analyses using WSR-88D radar ... -
Analysis of a Surprise Western New York Snowstorm
(American Meteorological Society, 2001)Although Rochester, New York (ROC), is not located in a climatogically favored region for extreme [i.e., ≥30 cm (12 in.) 24 h?1] lake-effect snow (LES), significant [i.e., ≥15 cm (6 in.) 24 h?1] LES can occur there under ... -
Synoptic Structure and Evolution of a Kona Low
(American Meteorological Society, 2001)A subtropical cyclone or kona low affected the island of Hawaii on 24?28 February 1997 and brought with it record winds at Hilo, large hail, blizzard conditions at higher elevations, and high surf. Damage estimates for the ... -
A Composite Analysis of Airstreams within Cold-Season Colorado Cyclones
(American Meteorological Society, 2001)Relative wind isentropic analysis was employed to investigate the evolution of airstreams and airstream boundaries within midlatitude cyclones that formed in the Colorado cyclogenesis region of the United States. This study ... -
Real-Time Detection of Split Fronts Using Mesoscale Models and WSR-88D Radar Products
(American Meteorological Society, 2001)A structured methodology for detecting the presence of split cold fronts in an operational forecast environment is developed and applied to a case in which a split front passed over a region of cold air damming in the ... -
Tropical Cyclone–Like Vortices in the Extratropics: Observational Evidence and Synoptic Analysis
(American Meteorological Society, 2001)In this article two subsynoptic-scale cyclones that developed between 3 and 10 October 1996 over the western-central Mediterranean, causing floods, strong winds, and severe damage, are analyzed. Surface observations reveal ... -
EDITORIAL
(American Meteorological Society, 2001) -
EDITORIAL
(American Meteorological Society, 2001) -
Nighttime Observation of Sheared Tropical Cyclones Using GOES 3.9-μm Data
(American Meteorological Society, 2000)This note discusses a Geostationary Operational Environmental Satellite product that can reveal the low clouds associated with tropical cyclones at night. It is based on a pixel-by-pixel difference of the longwave (10.8 ... -
Synthetic Aperture Radar as a Tool for Investigating Polar Mesoscale Cyclones
(American Meteorological Society, 2000)Polar mesoscale cyclones are intense vortices that form in cold, marine air masses poleward of major jet streams and frontal zones. Synthetic aperture radar (SAR) should be considered as a potential tool for the study of ...