Weather and Forecasting: Recent submissions
Now showing items 2161-2180 of 3043
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Comparison between Observed Convective Cloud-Base Heights and Lifting Condensation Level for Two Different Lifted Parcels
(American Meteorological Society, 2002)Approximately 400 Automated Surface Observing System (ASOS) observations of convective cloud-base heights at 2300 UTC were collected from April through August of 2001. These observations were compared with lifting condensation ... -
Explicit Cloud-Scale Models for Operational Forecasts: A Note of Caution
(American Meteorological Society, 2002)As computational capacity has increased, cloud-scale numerical models are slowly being modified from pure research tools to forecast tools. Previous studies that used cloud-scale models as explicit forecast tools, in much ... -
Toward Improved Prediction of Mesoscale Convective System Dissipation
(American Meteorological Society, 2002)The complex issue of mesoscale convective system (MCS) dissipation over the central United States is investigated using both observations and Eta Model output from 47 cases that occurred during May?August 1998?99 in Iowa ... -
Vertical Wind Shear Associated with Left-Moving Supercells
(American Meteorological Society, 2002)Vertical wind shear parameters are presented for 60 left-moving supercells across the United States, 53 of which produced severe hail (≥1.9 cm). Hodographs corresponding to environments of left-moving supercells have a ... -
Characterization of Weekly Cumulative Rainfall Forecasts over Meteorological Subdivisions of India Using a GCM
(American Meteorological Society, 2002)Weekly cumulative rainfall forecasts were made for the meteorologically homogeneous areas of the Indian subcontinent, divided into meteorological subdivisions, by performing 7-day integrations of the operational Indian T80 ... -
Statistical Prediction of Tropical Cyclone Motion: An Analog–CLIPER Approach
(American Meteorological Society, 2002)In recent years, numerical models have shown significant improvement in their ability to predict tropical cyclone motion. This has brought about a decline in the development, improvement, and use of models that treat ... -
Tropical Cyclone Formations over the Western North Pacific in the Navy Operational Global Atmospheric Prediction System Forecasts
(American Meteorological Society, 2002)A set of criteria is developed to identify tropical cyclone (TC) formations in the Navy Operational Global Atmospheric Prediction System (NOGAPS) analyses and forecast fields. Then the NOGAPS forecasts of TC formations ... -
Comparison of Methodologies for Probabilistic Quantitative Precipitation Forecasting
(American Meteorological Society, 2002)Twenty-four-hour probabilistic quantitative precipitation forecasts (PQPFs) for accumulations exceeding thresholds of 0.01, 0.05, and 0.10 in. are produced for 154 meteorological stations over the eastern and central regions ... -
A Climatology of Surface Baroclinic Zones
(American Meteorological Society, 2002)Analyses of surface potential temperature for one year over the contiguous United States, southern Canada, northern Mexico, and adjacent oceanic areas showed three regions of relatively high frequency of strong gradients. ... -
Use of a Mesoscale Model to Forecast Severe Weather Associated with a Cold Front Aloft
(American Meteorological Society, 2002)A forecast of severe weather and the potential for tornadoes associated with a cyclone that developed in the lee of the Rocky Mountains on 19?21 June 2000 is evaluated. The forecasting methods used by the National Weather ... -
Precipitation Forecast of MM5 in the Taiwan Area during the 1998 Mei-yu Season
(American Meteorological Society, 2002)This study presents precipitation verification, in the Taiwan area, for a real-time Pennsylvania State University?National Center for Atmospheric Research Fifth-Generation Mesoscale Model (MM5) system during the 1998 Mei-yu ... -
Formation of a Sharp Snow Gradient in a Midwestern Heavy Snow Event
(American Meteorological Society, 2002)A case study of the 13?14 March 1999 heavy snow event across southern Missouri and neighboring states is presented. Of the many features that made this storm notable, the very sharp gradient on the northern periphery of ... -
The Cool-Season Tornadoes of California and Southern Australia
(American Meteorological Society, 2002)Examples of cool-season tornadic thunderstorms in California and southern Australia are examined. Almost one-half of the reported Australian tornadoes and the majority of those in California occur in the cool season. It ... -
The February 2001 Eruption of Mount Cleveland, Alaska: Case Study of an Aviation Hazard
(American Meteorological Society, 2002)Mount Cleveland, Alaska (52°49?N, 169°57?W), located on Chuginadak Island, erupted on 19 February 2001. The atmosphere?volcanic plume interactions that occurred as part of this event led to several serious encounters of ... -
Assimilation of SST Data into a Real-Time Coastal Ocean Forecast System for the U.S. East Coast
(American Meteorological Society, 2002)The real-time, three-dimensional, limited-area Coastal Ocean Forecast System (COFS) has been developed for the northwestern Atlantic Ocean and implemented at the National Centers for Environmental Prediction. COFS generates ... -
Ocean–Atmosphere Interaction in the Agulhas Current Region and a South African Extreme Weather Event
(American Meteorological Society, 2002)Ocean?atmosphere interaction above warm western boundary currents such as the Gulf Stream, the Kuroshio Current, and the Agulhas Current often leads to very high evaporation rates. In the case of the Agulhas Current, which ... -
EDITORIAL
(American Meteorological Society, 2002) -
The Role of Ground-Truth Reports in the Warning Decision-Making Process during the 3 May 1999 Oklahoma Tornado Outbreak
(American Meteorological Society, 2002)During the devastating Oklahoma tornado outbreak that began just after 1600 central daylight time (CDT) on 3 May 1999, timely ground-truth reports of severe weather played a critical role in the warning decision-making ... -
A Satellite Perspective of the 3 May 1999 Great Plains Tornado Outbreak within Oklahoma
(American Meteorological Society, 2002)Geostationary Operational Environmental Satellite (GOES) imagery from 3 May 1999 is examined. Synoptic-scale water vapor imagery shows a deepening low-amplitude upper-level trough over the western United States on 3 May, ... -
After the Storm: Building a Safe Shelter for the School Children of Mulhall, Oklahoma
(American Meteorological Society, 2002)When the elementary school in Mulhall, Oklahoma, was destroyed during the tornado outbreak of 3 May 1999, a great loss of young life was prevented by chance alone. The tornado hit after school was out of session. The weather ...