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TAC Membership

The NEXRAD Technical Advisory Committee (TAC) is chartered by the NEXRAD Program Management Committee. The TAC is composed of a Chair; an Executive Secretary; four members each from the Departments of Commerce, Defense, and Transportation; and, two at-large members. The Chair's term is two years (renewable); the Executive Secretary's position is fixed by the charter; agency members serve indefinite terms at the pleasure of their Departments; and, the at-large members are appointed by the Chair. See the charter on the Reference page for more information.

Dr. John T. Snow
Regents' Professor of Meteorology
Dean Emeritus, College of Atmospheric and Geographic Sciences
The University of Oklahoma
National Weather Center, Suite 5710
120 David L. Boren Blvd
Norman, OK 73072
Appointed: December 2001
Bill Ward
NEXRAD Radar Operations Center


Department of Commerce
Kurt Hondl
Deputy Director,
Appointed: June 2021
Todd Lindley
Science and Operations Officer
NOAA/NWS/Weather Forecast office
Norman, OK
Appointed: August 2023
Michael Istok
Physical Scientist
NEXRAD Radar Operations Center
Appointed: 2007

Department of Defense

Keith Miller
Hardware Engineer
Radar Operations Center
Appointed: August 2023

Department of Transportation

Todd Pattison
FAA/AJW-14A ITWS Lead Engineer
Appointed: March 2007
Doug Murphy
FAA WARP and Weather Programs
Appointed: May 2019
Jim Evans
Lincoln Laboratory
Appointed: June 2000
Dr. David Smalley
Lincoln Laboratory
Appointed: May 2019


Dr. Tammy Weckwerth
P.O. Box 3000
Boulder CO 80307
Appointed: January 2017