Flash flood composite analysis in Vermont and northern New York

Goff, John M.; Hanson, Gregory A., 1965-

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The NOAA IR serves as an archival repository of NOAA-published products including scientific findings, journal articles, guidelines, recommendations, or other information authored or co-authored by NOAA or funded partners. As a repository, the NOAA IR retains documents in their original published format to ensure public access to scientific information.

i

Flash flood composite analysis in Vermont and northern New York

2012
By Goff, John M. ; Hanson, Gregory A., 1965-
Series: Eastern Region technical attachment (National Weather Service (U.S.)) ; no. 2012-03

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Details:

Personal Author:

Goff, John M. ; Hanson, Gregory A., 1965-

Goff, John M. ; Hanson, Gregory A., 1965- Less -
Corporate Authors:

United States, National Weather Service., Eastern Region,
NOAA Program & Office:

NWS (National Weather Service) ; ER (Eastern Region)

NWS (National Weather Service) ; ER (Eastern Region) Less -
Description:

"A study of 51 flash flood cases in the National Weather Service (NWS) Burlington , Vermont's County Warning Area was conducted. Composite analysis maps were generated, and a subset of 17 available soundings were analyzed. Composite maps showed flash flood-producing storms developed in areas of moderately favorable upper level jet dynamics, weak mid-tropospheric ridging with an approaching short wave trough to the west, a weak surface trough in the vicinity and a low level high moisture axis. The sounding analysis revealed a tall narrow CAPE profile, deep warm coalescence layer, and a light veering wind profile through the boundary layer. Precipitable water, while high, was not extremely anomalous; in most cases only 100% to 150% of normal. The soundings were also marked by a very low Lifted Condensation Level, in many cases below 1,000 feet above ground level. The spatial distribution of reported events suggested evidence of a population bias in northern New York, while this signal was less pronounced in Vermont. Orographical influences were also apparent, especially along the eastern slopes of the Adirondack Mountains. By applying local forecast expertise in conjunction with the parameters identified in this study, it is hoped that skill in detecting the potential for flash flooding in the NWS Burlington, VT county warning area will increase"--Abstract.
Content Notes:

John M. Goff and Gregory A. Hanson.

"November 2012."

Includes bibliographical references (pages 9-10).
Keywords:

[+]

Flood Forecasting Floods Flood Warning Systems Research
Series:

Eastern Region technical attachment (National Weather Service (U.S.)) ; no. 2012-03
Document Type:

Technical Attachment
Place as Subject:

Vermont ; New York (State)

Vermont ; New York (State) Less -
Rights Information:

Public Domain
Compliance:

Library
Main Document Checksum:

[+]

urn:sha256:540088622a8772bf623d1fc84cac9dd25343a606e72b0a94b29e42422794e4bb
Download URL:

https://repository.library.noaa.gov/view/noaa/6625/noaa_6625_DS1.pdf
File Type:

[PDF-1.05 MB]