View in EDS HTML Full Text PDF Full Text

Idealized Simulations of the Sensitivity of Supercell Thunderstorm Behavior Near Complex Terrain to Storm Maturity and Approach Angle.

Saved in:
Bibliographic Details
Title: Idealized Simulations of the Sensitivity of Supercell Thunderstorm Behavior Near Complex Terrain to Storm Maturity and Approach Angle.
Authors: Twohey, Logan J.1 (AUTHOR) ltwohey@charlotte.edu, Davenport, Casey E.1 (AUTHOR)
Source: Monthly Weather Review. May2026, Vol. 154 Issue 5, p1-24. 24p.
Subjects: Topography, Azimuth, Thunderstorms, Rotational flow, Severe storms, Simulation methods & models
Geographic Terms: Appalachian Mountains
Abstract: Complex terrain substantially influences weather systems, with prior work documenting impacts to intensity, longevity, and severe weather production of supercell thunderstorms. However, the extent to which these impacts are sensitive to the maturity of the supercell and its angle of approach to the terrain is not well understood. These sensitivities were systematically tested through idealized simulations of supercell thunderstorms traversing the complex terrain of the central and southern Appalachian Mountains. Three maturity levels were imposed by varying the initiation location of the supercell, while the approach angle was varied by rotating the wind profile of the background environment. Supercell evolution was also compared to a simulation with flat terrain. The results demonstrate that supercell intensity, longevity, and motion metrics vary considerably and are sensitive to supercell maturity and approach angle. Supercells initiating closer to the terrain experienced the largest impacts to intensity and longevity, while impacts were more varied among approach angles and highly dependent on localized terrain features traversed. As the approach angle became more perpendicular to the principal crest, low-level rotation was more frequently enhanced due to channeling flow. [ABSTRACT FROM AUTHOR]
Copyright of Monthly Weather Review is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
Full text is not displayed to guests.
FullText Links:
  – Type: pdflink
Text:
  Availability: 1
Header DbId: egs
DbLabel: Engineering Source
An: 194578185
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
IllustrationInfo
Items – Name: Title
  Label: Title
  Group: Ti
  Data: Idealized Simulations of the Sensitivity of Supercell Thunderstorm Behavior Near Complex Terrain to Storm Maturity and Approach Angle.
– Name: Author
  Label: Authors
  Group: Au
  Data: <searchLink fieldCode="AR" term="%22Twohey%2C+Logan+J%2E%22">Twohey, Logan J.</searchLink><relatesTo>1</relatesTo> (AUTHOR)<i> ltwohey@charlotte.edu</i><br /><searchLink fieldCode="AR" term="%22Davenport%2C+Casey+E%2E%22">Davenport, Casey E.</searchLink><relatesTo>1</relatesTo> (AUTHOR)
– Name: TitleSource
  Label: Source
  Group: Src
  Data: <searchLink fieldCode="JN" term="%22Monthly+Weather+Review%22">Monthly Weather Review</searchLink>. May2026, Vol. 154 Issue 5, p1-24. 24p.
– Name: Subject
  Label: Subjects
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Topography%22">Topography</searchLink><br /><searchLink fieldCode="DE" term="%22Azimuth%22">Azimuth</searchLink><br /><searchLink fieldCode="DE" term="%22Thunderstorms%22">Thunderstorms</searchLink><br /><searchLink fieldCode="DE" term="%22Rotational+flow%22">Rotational flow</searchLink><br /><searchLink fieldCode="DE" term="%22Severe+storms%22">Severe storms</searchLink><br /><searchLink fieldCode="DE" term="%22Simulation+methods+%26+models%22">Simulation methods & models</searchLink>
– Name: SubjectGeographic
  Label: Geographic Terms
  Group: Su
  Data: <searchLink fieldCode="DE" term="%22Appalachian+Mountains%22">Appalachian Mountains</searchLink>
– Name: Abstract
  Label: Abstract
  Group: Ab
  Data: Complex terrain substantially influences weather systems, with prior work documenting impacts to intensity, longevity, and severe weather production of supercell thunderstorms. However, the extent to which these impacts are sensitive to the maturity of the supercell and its angle of approach to the terrain is not well understood. These sensitivities were systematically tested through idealized simulations of supercell thunderstorms traversing the complex terrain of the central and southern Appalachian Mountains. Three maturity levels were imposed by varying the initiation location of the supercell, while the approach angle was varied by rotating the wind profile of the background environment. Supercell evolution was also compared to a simulation with flat terrain. The results demonstrate that supercell intensity, longevity, and motion metrics vary considerably and are sensitive to supercell maturity and approach angle. Supercells initiating closer to the terrain experienced the largest impacts to intensity and longevity, while impacts were more varied among approach angles and highly dependent on localized terrain features traversed. As the approach angle became more perpendicular to the principal crest, low-level rotation was more frequently enhanced due to channeling flow. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
  Group: Ab
  Data: <i>Copyright of Monthly Weather Review is the property of American Meteorological Society and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
PLink https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=194578185
RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1175/MWR-D-25-0041.1
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 24
        StartPage: 1
    Subjects:
      – SubjectFull: Topography
        Type: general
      – SubjectFull: Azimuth
        Type: general
      – SubjectFull: Thunderstorms
        Type: general
      – SubjectFull: Rotational flow
        Type: general
      – SubjectFull: Severe storms
        Type: general
      – SubjectFull: Simulation methods & models
        Type: general
      – SubjectFull: Appalachian Mountains
        Type: general
    Titles:
      – TitleFull: Idealized Simulations of the Sensitivity of Supercell Thunderstorm Behavior Near Complex Terrain to Storm Maturity and Approach Angle.
        Type: main
  BibRelationships:
    HasContributorRelationships:
      – PersonEntity:
          Name:
            NameFull: Twohey, Logan J.
      – PersonEntity:
          Name:
            NameFull: Davenport, Casey E.
    IsPartOfRelationships:
      – BibEntity:
          Dates:
            – D: 01
              M: 05
              Text: May2026
              Type: published
              Y: 2026
          Identifiers:
            – Type: issn-print
              Value: 00270644
          Numbering:
            – Type: volume
              Value: 154
            – Type: issue
              Value: 5
          Titles:
            – TitleFull: Monthly Weather Review
              Type: main
ResultId 1