Author: United States. National Oceanic and Atmospheric AdministrationPublisher:
ISBN:
Category : Floods
Languages : en
Pages : 68
Book Description
Johnstown, Pennsylvania Flash Flood of July 19-20, 1977
Author: United States. National Oceanic and Atmospheric AdministrationPublisher:
ISBN:
Category : Floods
Languages : en
Pages : 68
Book Description
Johnstown-western Pennsylvania Storm and Floods of July 19-20, 1977
Author: Geological Survey (U.S.)Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 80
Book Description
Meteorological Analysis of the Johnstown, Pennsylvania, Flash Flood, 19-20 July 1977
Author: Lee R. HoxitPublisher:
ISBN:
Category : Johnstown (Cambria County, Pa.)
Languages : en
Pages : 82
Book Description
Synoptic and mesoscale analyses of the meteorological conditions that produced disastrous flash flooding in the Johnstown, PA., region on July 19-20, 1977, are presented. Detailed rainfall analyses based on surface rain gauges, National Weather Service (NWS) radar, and satellite rainfall estimation techniques are also shown. Dynamic processes associated with a weak short-wave trough triggered and maintained widespread thunderstorm activity over Pennsylvania and New York during the afternoon and evening of July 19. Two major squall lines moved across Pennsylvania. The western extension of the outflow boundary produced by the second squall line became quasi-stationary in western Pennsylvania, and appeared to be the primary feature that focused the heavy rainfall over a relatively small region. Warm, moist air was lifted over the rain-cooled air lying north and east of the boundary, triggering new storms in the same general region. The storms repeatedly moved southeastward over the Conemaugh River Basin, producing 8- to 9-h rainfalls of up to 12 in.
Meteorological Analysis of the Johnstown, Pennsylvania, Flash Flood, 19-20 July 1977
Author: Lee R. HoxitPublisher:
ISBN:
Category : Johnstown (Cambria County, Pa.)
Languages : en
Pages : 82
Book Description
Synoptic and mesoscale analyses of the meteorological conditions that produced disastrous flash flooding in the Johnstown, PA., region on July 19-20, 1977, are presented. Detailed rainfall analyses based on surface rain gauges, National Weather Service (NWS) radar, and satellite rainfall estimation techniques are also shown. Dynamic processes associated with a weak short-wave trough triggered and maintained widespread thunderstorm activity over Pennsylvania and New York during the afternoon and evening of July 19. Two major squall lines moved across Pennsylvania. The western extension of the outflow boundary produced by the second squall line became quasi-stationary in western Pennsylvania, and appeared to be the primary feature that focused the heavy rainfall over a relatively small region. Warm, moist air was lifted over the rain-cooled air lying north and east of the boundary, triggering new storms in the same general region. The storms repeatedly moved southeastward over the Conemaugh River Basin, producing 8- to 9-h rainfalls of up to 12 in.
U.S. Geological Survey Water-supply Paper
Author: A Report on Flood Hazard Mitigation
Author: Monthly Catalogue, United States Public Documents
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 832
Book Description
Monthly Catalog of United States Government Publications
Author: Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 992
Book Description
Summary of Significant Floods in the United States, Puerto Rico, and the Virgin Islands, 1970 Through 1989
Author: Charles A. PerryPublisher: Geological Survey (USGS)
ISBN:
Category : Nature
Languages : en
Pages : 620
Book Description
Water Spectrum
Author: Publisher:
ISBN:
Category : Hydraulic engineering
Languages : en
Pages : 758
Book Description