North American Weather Consultants, Inc.
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The World's Longest Standing Private Weather Modification Company


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NAWC Services

CLOUD SEEDING/
WEATHER MODIFICATION:

Snow and Rain
Augmentation


Fog Dissipation

Feasibility Studies

Design/Evaluation Studies

Cloud Physics/
Tracer Studies


Technology and
Equipment Transfer


APPLIED METEOROLOGICAL SERVICES:

Hurricane Forecast
Support

Probable Maximum
Precipitation (PMP)
Studies


Climate Studies

Forensic Meteorology/
Expert Testimony


Specialized Forecasting

Meteorology Monitoring

Data Retrieval

Radar-Derived Rainfall Estimates


AIR QUALITY SERVICES:

Ambient Monitoring

Meteorology Monitoring

Tracer Studies

 

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Probable Maximum Precipitation (PMP) Flyer


Publications

For information on weather modification technologies and other meteorological applications, refer to the following publications. If you experience difficulty in loading the larger files, right click on the file and select 'save target as' to save the file to your computer.


Fog Dispersion Programs

Summary of a Trial Winter Fog Clearing Program at the Missoula International Airport, 2006-2007 (Adobe Acrobat (PDF), 2.3 MB)


Winter Season Cloud Seeding Programs

Analysis of the Mt. Crested Butte Ice Detector and Associated Measurements in Colorado during the 2015-2016 Winter Season
(NAWC report)

Analysis of Ice Detector Observations at Mt. Crested Butte, Colorado During the 2014-2015 Winter Season
(WMA, Journal of Weather Modification, Vol. 48, 2016)

Target/Control Analyses for Santa Barbara County's Operational Winter Cloud Seeding Program
(WMA, Journal of Weather Modification, Vol. 47, 2015)

A Brief History of Evaluations Performed on the Operational Kings River Winter Orographic Cloud Seeding Program
(WMA, Journal of Weather Modification, Vol. 46, 2014)

Low-Level Stability During Winter Storms in the Uinta Basin of Utah: Potential Impacts on Ground-Based Seeding
(WMA, Journal of Weather Modification, Vol. 45, 2013, reviewed)

Winter "Cloud Seeding Windows" and Potential Influences of Targeted Mountain Barriers
(WMA, Journal of Weather Modification, Vol. 45, 2013, reviewed)

Analysis of Mountain Ridge Ice Detector Measurements in Utah during Five Winter Seasons

Low-level Atmospheric Stability During Icing Periods in Utah, and Implications for Winter Ground-Based Cloud Seeding
(WMA, Journal of Weather Modification, Vol. 44, 2012, reviewed)

Summary of a Weather Modification Feasibility/Design Study For Winter Snowpack Augmentation in the Upper Boise River Basin, Idaho
(WMA, Journal of Weather Modification, Vol. 44, 2012, reviewed)

Analysis of 2009-2010 and 2010-2011 Ice Detector Data in Utah

A Winter Operational Cloud Seeding Program: Upper Gunnison River Basin, Colorado
(WMA, Journal of Weather Modification, Vol. 43, 2011, reviewed)

Analysis of Mountain Ridge Ice Detector Measurements in Utah during the 2009-2010 Winter Season
(Material presented at 2011 AMS conference)

Summary of a Weather Modification Feasibility Study for Winter Snowpack Augmentation in the Eastern Snake River Basin, Idaho
(WMA, Journal of Weather Modification, Vol. 42, 2010, non-reviewed)

Weather Modification, a.k.a Cloud Seeding, a Technology Whose Time Has Come
Published in the Arizona Water Resource Newsletter (Vol. 18, No. 2, Spring 2010) of the Water Resources Research Center, University of Arizona.
Reprinted by permission.

30+ Winter Seasons of Operational Cloud Seeding in Utah
(WMA, Journal of Weather Modification, Vol. 41, 2009, reviewed)

An independent statistical analysis of a long-standing winter cloud seeding program in Utah

A Level II Weather Modification Feasibility Study for Winter Snowpack Augmentation in the Salt River and Wyoming Ranges in Wyoming (PDF)  or  MS Word Format
(WMA, Journal of Weather Modification, Vol. 39, 2007, reviewed)

Potential Use of Winter Cloud Seeding Programs to Augment the Flow of the Colorado River (PDF) or MS Word Format
(White Paper, 2006, non-reviewed)

Santa Barbara Cloud Seeding Project in Coastal Southern California (PDF) or MS Word Format
(WMA, Journal of Weather Modification, Vol. 37, 2005, reviewed section)

Is Air Pollution Impacting Winter Orographic Precipitation in Utah? (PDF) or MS Word Format
(WMA, Journal of Weather Modification, Vol. 37, 2005, reviewed section)

Observations of Rime Icing in the Wasatch Mountains of Utah: Implications for Winter Season Cloud Seeding (PDF)
(WMA, Journal of Weather Modification, Vol. 37, 2005, reviewed section)

Analysis of Downwind Seeding Effects - 2003 (PDF) or MS Word Format
(WMA, Journal of Weather Modification, Vol. 35, 2003, non-reviewed section)

Economic Feasibility Study of a Winter Cloud Seeding Program in Idaho- 2002 (PDF) or  Microsoft Word Format
Text-only MS Word version

(WMA, Journal of Weather Modification, Vol. 34, 2002, reviewed section)

Utah Cloud Seeding Program - Increased Runoff/Cost Analyses (PDF)
(Stauffer and Williams, 2000)

An Update on a Winter Cloud Seeding Program in Utah - 1997 (PDF) or  MS Word Format
Text-only MS Word

(WMA, Journal of Weather Modification, Vol. 29, 1997, non-reviewed section)

A Winter Cloud Seeding Program in Utah - 1991 (PDF) or MS Word Format  or 
Text-only MS Word

(WMA, Journal of Weather Modification, Vol. 23, 1991, reviewed section)

Winter Orographic Cloud Seeding Northeast of Bear Lake, Utah - 1983 (PDF)
(WMA, Journal of Weather Modification, Vol. 15, 1983, reviewed section)

Santa Barbara Pyrotechnic Cloud Seeding Test Results 1967-70 (Abstract Only, PDF)
(AMS, Journal of Applied Meteorology, Vol. 10, #4, 1971)

 

Summer Season and Warm Climate Cloud Seeding Programs


Cloud Seeding Technology, a Feasible Alternative Water Source for the Caribbean? (PDF)
Published in the American Water Resources Association conference proceedings for their "International Summer Specialty Conference and 8th Caribbean Islands Water Resources Congress", August 30 - September 1, 2010, Rio Grande, Puerto Rico. (Non-reviewed)

Summertime Cloud Seeding Programs in Central America Designed to Enhance Hydroelectric Generation - Updated 1999 (PDF)
(Non-reviewed)

Programa de Sembrado de Nubespara Mejorar la Producción de Energía Hidroeléctrica en el Área Colectora El Cajón, Honduras (PDF)
(Non-reviewed)

Summertime Cloud Seeding Programs in Central America Designed to Enhance Hydroelectric Power (PDF)
(Non-reviewed)

Three Rainfall Augmentation Programs in Texas - 1987 (PDF)
(WMA, Journal of Weather Modification, Vol. 19, 1987, reviewed section)

 

For partial listings of prior NAWC cloud seeding projects click on the links below:

Research Programs (PDF Format)

International Projects - Partial Listing (PDF)

Map of NAWC Operational Cloud Seeding Projects in the Western United States (1950 - 2009)

 

Examples of climate studies conducted for use in the design of cloud seeding programs:

Climate Study for the Uinta Range of Utah - PDF Format

Climate Study for Gunnison County, Colorado - PDF Format

 

For information on Probable Maximum Precipitation studies view the following publications:

Innovative Design Approaches for the South Platte Reservoir - PDF Format - Hi Resolution (2033 KB)

Innovative Design Approaches for the South Platte Reservoir - PDF Format - Low Resolution (1030 KB)

 

If you would like complete reproductions of any of these papers, please contact us by phone (801) 942-9005 or email.

 

North American Weather Consultants, Inc.

8180 South Highland Dr., Suite B-2
Sandy, Utah 84093
USA

Telephone:   801-942-9005

Facsimile:   801-942-9007

E-mail:  nawc@nawcinc.com

Contacts:  Don Griffith, President or Mark Solak, Vice President

Copyright 2017, North American Weather Consultants Inc., Sandy, Utah, USA.

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