Author: Lee R. Hoxit
Publisher:
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. Hoxit
Publisher:
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.
Publisher:
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.
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
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 80
Book Description
Johnstown, Pennsylvania Flash Flood of July 19-20, 1977
Author: United States. National Oceanic and Atmospheric Administration
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 68
Book Description
Publisher:
ISBN:
Category : Floods
Languages : en
Pages : 68
Book Description
Publications Catalog of the U.S. Department of Commerce
Author: United States. Department of Commerce. Office of Publications
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 822
Book Description
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 822
Book Description
Monthly Catalog of United States Government Publications
Author: United States. Superintendent of Documents
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1250
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
Publisher:
ISBN:
Category : Government publications
Languages : en
Pages : 1250
Book Description
February issue includes Appendix entitled Directory of United States Government periodicals and subscription publications; September issue includes List of depository libraries; June and December issues include semiannual index
APCL.
Summary of Significant Floods in the United States, Puerto Rico, and the Virgin Islands, 1970 Through 1989
Author: Charles A. Perry
Publisher: Geological Survey (USGS)
ISBN:
Category : Nature
Languages : en
Pages : 620
Book Description
Publisher: Geological Survey (USGS)
ISBN:
Category : Nature
Languages : en
Pages : 620
Book Description
Conference on Weather Forecasting and Analysis and Aviation Meteorology, October 16-19, 1978, Silver Spring, Md
Author:
Publisher:
ISBN:
Category : Aeronautics in meteorology
Languages : en
Pages : 446
Book Description
Publisher:
ISBN:
Category : Aeronautics in meteorology
Languages : en
Pages : 446
Book Description
Second Conference on Flash Floods of the American Meteorological Society, March 18-20, 1980, Atlanta, Ga
Geological Survey Professional Paper
Author: Geological Survey (U.S.)
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
Book Description
Publisher:
ISBN:
Category :
Languages : en
Pages : 80
Book Description