Frontal Focusing of a Flooding RainstormSource: Monthly Weather Review:;2000:;volume( 128 ):;issue: 012::page 4155Author:Sanders, Frederick
DOI: 10.1175/1520-0493(2000)129<4155:FFOAFR>2.0.CO;2Publisher: American Meteorological Society
Abstract: A heavy rainstorm over Kentucky, producing extensive flooding, was concentrated in a narrow band oriented nearly zonally just south of the Ohio River. Analysis of routine surface observations showed that an intense quasi-stationary surface front formed during the 24-h period of heaviest rainfall. This front was parallel to the rainband and was some distance to the south of it. Horizontal temperature gradients reached more than 20°F over 110 km. Analysis of sea level pressure showed that geostrophic deformation was present in a small region ahead of each of two small centers of low pressure that migrated eastward along the front. Vertical cross sections normal to the front showed that conditional upright and symmetric stabilities were small or negative in the frontal updraft. It was inferred from this that the frontal updraft was unusually intense and narrow, qualitatively consistent with the intensity of the rainband.
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contributor author | Sanders, Frederick | |
date accessioned | 2017-06-09T16:13:28Z | |
date available | 2017-06-09T16:13:28Z | |
date copyright | 2000/12/01 | |
date issued | 2000 | |
identifier issn | 0027-0644 | |
identifier other | ams-63654.pdf | |
identifier uri | http://onlinelibrary.yabesh.ir/handle/yetl/4204681 | |
description abstract | A heavy rainstorm over Kentucky, producing extensive flooding, was concentrated in a narrow band oriented nearly zonally just south of the Ohio River. Analysis of routine surface observations showed that an intense quasi-stationary surface front formed during the 24-h period of heaviest rainfall. This front was parallel to the rainband and was some distance to the south of it. Horizontal temperature gradients reached more than 20°F over 110 km. Analysis of sea level pressure showed that geostrophic deformation was present in a small region ahead of each of two small centers of low pressure that migrated eastward along the front. Vertical cross sections normal to the front showed that conditional upright and symmetric stabilities were small or negative in the frontal updraft. It was inferred from this that the frontal updraft was unusually intense and narrow, qualitatively consistent with the intensity of the rainband. | |
publisher | American Meteorological Society | |
title | Frontal Focusing of a Flooding Rainstorm | |
type | Journal Paper | |
journal volume | 128 | |
journal issue | 12 | |
journal title | Monthly Weather Review | |
identifier doi | 10.1175/1520-0493(2000)129<4155:FFOAFR>2.0.CO;2 | |
journal fristpage | 4155 | |
journal lastpage | 4159 | |
tree | Monthly Weather Review:;2000:;volume( 128 ):;issue: 012 | |
contenttype | Fulltext |