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Deposition Designation Station

Meteorology - Weather Expert Witnesses

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Gregg Potter
President, CEO and Meteorologist
77-851 Las Montanas Road
Suite C
Palm Desert CA 92211
phone: 760-459-2079
fax: 866-741-2896
AnythingWeather Communications aggregates weather and storm data from around the United States and world and offers many storm-related analysis products. Our comprehensive storm analysis reports and surface weather data from thousands of weather observation sites offer our clients the tools to make their businesses more efficient.

Our StormSwath reports deliver clients a detailed map of where hail storms, wind storms and flooding occured down to the neighborhood using an interactive Google-driven map. Clients can order a specific location and storm date and reports are delivered within two business days. also delivers weather data from thousands of personal and government weather stations. Using web services or other delivery methods, thousands of weather data and forecast feeds are available for consumption by our client's internal systems.

AnythingWeather also assists clients in selling and managing on-site weather stations and web cameras to establish their location as a worlwide weather reporting site. We provide complete weather station and webcam network setup, management and installation support.
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David B. Spiegler, CCM
7084 Cataluna Circle
Delray Beach FL 33446
phone: 561-498-3795 or 978-996-6708
fax: 561-638-4189
David B. Spiegler, CCM has more than 45 years of proven experience in providing expertise across a broad spectrum of activities involving Meteorology, Climatology, and the Environment. Since the 1980s, he has provided expert analysis for more than 50 law firms and insurance companies on weather related legal and/or insurance claims. Mr. Spiegler has worked on cases in a number of states and has testified in district and superior courts, at arbitration hearings, and at environmental regulatory hearings. He has always been found to be qualified by the court.

Mr. Spiegler's cases range from slip and fall accidents, to motor vehicle, aircraft, and boating accidents, wrongful death and homicide, as well as cases for which damage to – or loss of – property from wind , snow, heavy rain, flooding, and ocean waves occurred. For many cases, he visited the site of the event and evaluated the physical and terrain factors. For all cases, he acquired, analyzed, and interpreted the weather data, reconstructed the weather at the time and location of the event/incident and/or damage or loss, and provided expert opinion and rationale for the opinion.

Services Offered:
  • Forensic Meteorology - build legal and insurance cases
  • Weather Industry Consulting - increases market share and profits
  • Weather and Climate Analysis - yields informed business decisions due to the impact of weather and climate
  • 5/3/2013 · Meteorology
    Certified Consulting Meteorologist and Fellow of the American Meteorological Society (AMS)

    5/10/2011 · Environment
    I read with interest the article by Ken Kaye on two scientist's challenge of other scientist's linking warmer oceans to more intense hurricanes (Sun-Sentinel page 1, December 13, 2007).

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    H. Michael Mogil
    Consulting Meteorologist
    5644 Tavilla Circle Suite 201
    Naples FL 34110
    phone: 239-591-2468 Main 240-426-2900 Cell 239-529-1200
    H. Michael Mogil is a Certified Consulting Meteorologist (M.S. Meteorology) with over 40 years of experience, nearly 30 of them with the National Oceanic and Atmospheric Administration (NOAA). In addition to working for the National Weather Service as a forecaster, researcher, and severe storm program manager, he also provided satellite training to many governmental agencies and hundreds of TV meteorologists.

    Litigation Support - Mr. Mogil has worked with the legal industry for approximately 20 years. His forensic services include the reconstruction of past weather events, their interpretation, and expert witness testimony for various legal and insurance matters. These include, but are not limited to, criminal investigations, automobile accidents, personal injury cases, and cases involving property damage.

    Mr. Mogil has been retained as an expert over 120 times and worked dozens of cases (both civil and criminal), supporting both plaintiff and defendant. He is able to present information orally and through varied visual media to ensure understanding by judges, juries, and attorneys. Mr. Mogil is able to access varied data sources to ensure honest and accurate event reconstruction. He has worked on cases involving:
    • Lightning
    • Rainfall
    • Snowfall
    • Flooding
    • Roof Collapses
  • Visibility
  • Boating Accidents
  • Slip and Falls
  • Hurricane
  • Thunderstorm-related Wind Damage
  • View Michael Mogil's Consulting Profile.
    H. Michael Mogil, et al
    Extreme Weather, a new book in the visually stunning, groundbreaking INSIDERS series, answers all these questions and more. Packed with high quality images and diagrams on everything from types of storms to how to observe weather to places known for their specfic extreme weather. Full-energy spreads approach the topics through unique and unexpected angles, taking the reader inside the action. Engaging and fun to read, this series will appeal to know-it-all kids and reluctant readers alike.
    H. Michael Mogil
    The ultimate guide to the planet-altering effects of extreme weather, featuring full-color photos and fascinating explanations of how weather systems work. H. Michael Mogil presents the results of his 35 years of meteorological research in a comprehensive overview of extreme weather systems, noting historical trends as well as what to expect in the future. He also explains how many events occur because the earth's environment self-regulates, while others may be influenced by such factors as rising temperatures in cities, deforestation, and population increases.
    H. Michael Mogil
    Tornadoes are one of the most fascinating and powerful weather phenomena. These twisting columns of air can be incredibly destructive and often lethal when they touch the ground. Weather forecasters have long studied tornadoes in an attempt to better understand their origins and how to predict them. H. Michael Mogil expertly explains the mechanics of tornadoes, how and where they form, and what happens when they strike. He describes how advances in technology, including radar and weather satellites, have led to improved warning systems.
    H. Michael Mogil
    Other books and publications by author on
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    John R. Bell II
    12909 East Mainsgate Circle
    Wichita KS 67228
    phone: 316-688-0050 (Office) 316-737-1490 (Cell)
    John R. Bell II, is an Aviation Management Consultant who offers Professional Pilot Services. His background includes 35 years of experience in corporate aviation development, implementing and managing the needs of various companies and individuals.

    Mr. Bell’s background experience since 2000 has included a number of international ferry flights with North Atlantic and Pacific crossings. He has supported a number of operators in Indonesia, Malaysia, and South Korea. The support he has provided includes qualifying their crewmembers (IOE/SOE) to meet their Air Taxi requirements as per Civil Aviation Authority (CAA) and qualifying their Flight Attendants.

    Certifications, Ratings, and Flight Times:
    • Airline Transport Pilot - Airplane Multiengine Land
    • Type Ratings: CE500, CE525S, CE560XL, CE650 and CE680 Sovereign
    • Commercial Privileges - Airplane Single Engine Land & Sea
    • Flight Instructor (Gold Seal) - Airplane Single and Multiengine Instrument Airplane
    • Flight Times - (Updated: December 31, 2015) Total: 16,128 PIC: 15,372- Turbojet: 7,372- Turboprop: 4,465- Multiengine: 13,382- Piston: 2,563
    Litigation Support - Mr. Bell provides expert witness services to counsel representing both Plaintiff and Defendant. He has been a FAASTeam Representative (Formerly FAA Accident Prevention Counselor) since 1984.

    Areas of Litigation Expertise:
    • CFR Title 14 Federal Aviation Regulations (FAR’s)
    • Cessna Citation Aircraft
    • Advanced Avionics Systems including Glass Cockpits, GPS, FMS, TAWS, TCAS Systems
    • Aircraft Aerodynamics
    • Aircraft Systems
    • Airspace – Domestic and International (MNPS, RVSM, RNP, PRNAV, BRNAV)
    • Aviation Weather Decision-making
    • Cold Weather Operations
    • CRM (Cockpit Resource Management) and Crew Decision-making
    • Flight Instruction – Fixed-wing
    • International Flight Operations and Procedures
    • IOE / SOE (Initial Operation Experience/Supervised Operation Experience)
    • Pilot Decision-making
    • Windshear Operations in the Cockpit
    View John Bell's Consulting Profile.
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    Dr. David L. Mitchell
    Consulting Forensic Meteorologist
    P.O. Box 70
    Dayton TX 77535
    phone: 936-257-1633
    fax: 936-258-4237
    Dr. David L. Mitchell is an authority on the Numerical Modeling of Geophysical and Atmospheric Data with a Doctorate in Meteorology from Purdue University. Dr. Mitchell has over 28 years of technical modeling experience in industry and consulting.

    Dr. Mitchell is a Court Qualified Expert in Air Modeling and Forensic Meteorology. His business experience includes various research, project management and technical consulting positions with Conoco, Getty Oil Company, Texaco, Tenneco, British Petroleum, Leviathan Gas Pipeline LLP and IBM Corporation.

    Dr. Mitchell has extensive knowledge of Forensic Meteorology and has published his research results on the numerical modeling of atmospheric stability and convection. Dr. Mitchell is an expert in the field of Air Pollution Meteorology with over 28 years of experience with the mathematical modeling of wave propagation in elastic media, atmospheric fluid dynamics and air dispersion modeling.

    Dr. Mitchell is a specialist in Weather Event Re-Construction for litigation and has provided expert testimony for numerous cases related to severe weather events and the application of Force Majeure clauses. He has provided forensic meteorology support for civil and criminal investigations and insurance cases involving weather related accidents, the release of toxic pollutants into the air, air pollution and weather related personal injury and property damage.

    He is a member of the Air and Waste Management Association, the American Meteorological Society and the National Association of Environmental Professionals. Dr. Mitchell is also an Associate Member of the American Bar Association with affiliation with the Litigation Division and is a Certified Professional Geoscientist and a Licensed Professional Geoscientist (#1330) in the State of Texas, Certified by the Texas Board of Professional Geoscientists.

  • Ph.D., Atmospheric Science and Meteorology, Purdue University 1976
  • M.S., Physics, Purdue University 1974
  • B.S., Physics and Mathematics (Dean’s Distinguished List), Baylor University 1972

    Dissertation: A Theoretical Investigation of Atmospheric Convective Modes as a Function of Rayleigh Number, Prandtl Number and Eddy Anisotropy; 1977, Meteor. Soc. Japan, Vol. 55, No. 4, 341 – 363.

    Certification and Honors
  • Court Qualified Expert in Air Modeling and Forensic Meteorology
  • Certified Professional Geoscientist, Licensed Geoscientist – Texas Board of Professional Geoscientists
  • Associate of the Scientific Research Society of North America
  • Sigma Pi Sigma, National Physics Honors Society
  • Distinguished Expert, National Forensic Center
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    Murray & Trettel, Inc.
    Thomas Piazza
    600 N 1st Bank Dr.
    Palatine IL 60067
    phone: 847-934-8230
    fax: 847-446-8480
    Thomas R. Piazza, CCM, President and CEO of Murray and Trettel, Incorporated, brings to the company more than 35 years of experience in the field of Meteorology with more than 20 years in positions of management. He joined Murray and Trettel in 1975 after four years of experience as a Weather Officer in the U.S. Air Force.

    In 1987, Mr. Piazza was named President of the Operational Forecast Division, in 1991, Executive Vice President of the Company and in 2001, President and CEO. In addition to his administrative responsibilities as President, he is a Certified Consulting Meteorologist holding Certificate #661.
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    Richard Westergard, CCM
    2766 Rosendale Rd
    Niskayuna NY 12309-1306
    phone: 518-831-9374
    fax: 518-374-7743
    Richard J. ( Dick) Westergard is a Forensic Meteorologist, specializing in Re-constructing Severe Weather events. He has earned the American Meteorological Society's (AMS) highest level of certification of "Certified Consulting Meteorologist" (CCM).

    Mr. Westergard has four decades of experience in operational meteorology with a focus on severe weather and radar interpretation. He has been trained on every weather radar ever used by the U.S. Government and used them all in operational settings to issue warnings and statements. He served as the official National Weather Service spokesperson in parts of West Virginia, Ohio, Kentucky, Wisconsin, Minnesota, Connecticut, Vermont, Massachusetts and New York. He was also the designated primary liaison person from the National Weather Service to the State of New York from 1994 to 2004.

    Forensic Meteorology & Other Weather Services Includes:
    • Weather Records Retrieval and Interpretation
    • Weather Radar Imagery Interpretation
    • Severe Weather Damage Assessments
    • Customized Weather Forecasting
    • Weather Emergency Plans
    • Severe Weather Risk Assessment
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    Jeremy Swenson, CSP
    11940 Cartwright Ave.
    Grandview MO 64030
    phone: 816-564-9131
    fax: 816-761-5309
    Swenson Consulting offers Snow Removal Expert Witness Services to legal professionals needing assistance with snow and ice removal slip and fall cases. He is a Snow Expert in black ice, sleet, freezing rain, and slick conditions. He is very familiar with the snow and ice removal industry standard operations and practices across the country, and will help determine how this relates to the snow removal agreement or operations in a slip and fall incident or snow related accident.

    Principal, Jeremy Swenson, CSP, has satisfied requirements by SIMA (largest nationally recognized snow and ice trade organization-Snow and Ice Management Association) to become a Certified Snow Professional. There are less than 250 CSP’s in the United States Of America. He works with attorneys on defense and plaintiff sides with regards to snow removal, ice treatment and snow removal best practices issues. He works nationwide and will travel.

    Swenson Consulting also offers detailed Weather Analysis services and reports for situations surrounding a slip and fall event or accident, and will offer detailed consultation regarding the weather surrounding the slip and fall accident.

    Mr. Swenson currently owns and operates Snowmen, one of the largest snow and ice management companies in North America. He is Security Clearanced and trained for onsite snow operations at the IRS Regional Headquarters, FBI Headquarters, Department Of Treasury Buildings, and many types of Airport, Railroad, Organ Transplant Centers, and Medical facilities. After overseeing thousands of commercial accounts over the years, he has worked through most every issue that is relevant to a snow removal operation in the industry.

    View Jeremy Swenson's Expert Witness Profile.
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    Dr. Liz Bentley
    Holden House 57 Rathbone Place
    London W1T1JU
    phone: 44-207-467-9404
    fax: 44-207-183-2550
    Dr. Liz Bentley is one of the world's leading Weather Experts. Former Chief Instructor of Forecasting at the Met Office College, she is the ultimate Climate Change Forecaster.

    Her training began in 1994 at the Met Office College, the United Kingdom's meteorological training institute. After forecasting for the Royal Air Force and managing a weather unit for the British Army, Dr. Bentley worked as the BBC Weather Centre Manager, where she was in charge of 30 Met Office employees and was responsible for managing the contract between the BBC and the Met Office to provide Weather Data, Weather Warnings, and Weather Presenters. Prior to RMetS, Dr. Bentley worked for the Ministry of Defence's environmental research programme where she became one of the UK's top Aviation Forecast Specialists.

    Dr. Bentley is Head of Communications at the Royal Meteorological Society (RMetS), where she is responsible for brand awareness, corporate communication through media, promotional material, public engagement, and membership development. While at the RMetS she has produced numerous corporate publications, implemented intiatives to increase society membership and addressed many enquiries from the media and general public on weather and climate related issues. Dr. Bentley founded the public membership organisation theWeather Club, in 2010, to promote an appreciation and understanding of weather.

    Areas of Expertise:
  • Climate Change
  • Weather Forecasting
  • Noise Prediction
  • Aviation Forecasting