National Weather Digest articles from December 1 2003

National Weather Digest archives from December 1 2003

Meeting news.(Calendar)
December 1, 2003... * The American Meteorological Society will hold its 85th Annual Meeting from 9-13 January 2005 at the San Diego Convention Center, San Diego, California. All details are available at Web site: www.ametsoc.org * The TESSA 2005 Texas Storm...

Interpretation of single-Doppler radar signatures in a V-shaped hailstorm: Part I--evolution of reflectivity-based features.(Author Abstract)
December 1, 2003... Abstract Part I of this two-part descriptive study documents the evolution of updrafts, hail, and cloud-to-ground lightning within a North Dakota multicell hailstorm that had a V-shaped radar reflectivity pattern. Details of storm...

A comparison of two major snowstorms that affected the southern Great Lakes region.
December 1, 2003... Abstract The southern Great Lakes region typically receives significant snowfall each winter, especially in areas subject to lake-effect snow. Even though residents expect heavy snow each winter, some winter storms can paralyze the region....

Examination of a long-lived heat burst event in the northern plains.
December 1, 2003... Abstract Several heat bursts were observed across portions of northern Nebraska and southern South Dakota during the local morning hours of 30 July 2001. These heat bursts were noted by a marked increase in temperatures, decrease in...

Using WSR-88D reflectivity data for the prediction of cloud-to-ground lightning: a central North Carolina study.
December 1, 2003... Abstract Charge separation most likely occurs during rebounding collisions between ice crystals and large ice hydrometeors (such as graupel and hail) that remain suspended in the mixed phase zone by the updraft of a growing thunderstorm....

Meteorological aspects of south-central and southwestern New Mexico and far western Texas flash floods.
December 1, 2003... Abstract Deep convection that produces excessive rainfall and flash flooding poses a threat to lives and property over south-central and southwestern New Mexico and far western Texas, primarily during the summer monsoon season. Forecasting...

The presentation of temperature information in television broadcasts: what is normal?
December 1, 2003... Abstract In a typical weather broadcast, observed daily temperature information such as maximum and minimum temperatures is shown and compared to the daily average or "normal". Such information, however, does not accurately describe...

Attitude, decision-making, and behavior among a small group of citizens near the path of the Siren, Wisconsin tornado of 18 June 2001.
December 1, 2003... Abstract A strong F-3 tornado devastated the northwest Wisconsin Village of Siren during the evening of 18 June 2001. The National Weather Service (NWS) issued a tornado watch, and severe thunderstorm and tornado warnings for Siren, but...

Nowcasting the variation of wind speed with height using gust factor measurement.
December 1, 2003... Abstract In the atmospheric surface boundary layer from the ground level up to a few hundred feet, the wind speed normally increases with height under near-neutral conditions. Knowledge of the vertical variation of the wind speed is...

A gust-factor criterion for rapid determination of atmospheric stability and mixing height for overwater dispersion estimates.
December 1, 2003... Abstract In order to estimate atmospheric pollution concentration downwind from its source, meteorological models (numerical, analytical, or graphical) are usually employed. Included in the model inputs are atmospheric stability and mixing...

Nowcasting mixing height and ventilation factor for rapid atmospheric dispersion estimates on land.
December 1, 2003... Abstract On the basis of boundary-layer parameterization schemes published in the open literature, several value-added atmospheric dispersion criteria are developed for rapid estimation of mixing height and ventilation factor. It is shown...