Storm of the Month Webinars
To help implement the use of WSR-88D Dual-Pol information in National Weather Service Weather Forecast Offices, WDTB has started a series of Dual-Pol "Storm of the Month" webinars. These webinars are short (20 minute presentations with 10 minutes of questions and answers afterwards) and focus on a single event or topic. The purpose of these informal webinars is to provide National Weather Service forecasters access to operational Dual-Pol subject matter experts, so that we may all share lessons learned and best practices with this new operational system as it is deployed over the next couple of years.
Presenter: Stan Czyzyk (WFO Las Vegas, NV)
Date: Wednesday, May 29, 2013 (1700-1730 UTC)
Topic: "Not Staying in Vegas: Our Story of Intense Rainfall and Hail in the Valley"
Photo courtesy of Chris Stachelski (NWS)
During the evening of Oct. 11, 2012, multiple, intense bands of thunderstorms moved northward through the Las Vegas Valley. Although rainfall in many locations only lasted 15 to 20 minutes, the rainfall was so intense that flash flooding resulted. Several interesting features were noted in terms of intense rainfall, hail, accumulating hail and an interesting band of contrasting ZDR values that was correlated with hail. A brief comparison will also be done with respect to the performance of rain estimates from both the legacy PPS and the dual pol QPE. Finally, a ZDR signature associated with strong convection that is currently of high research interest will be briefly presented.
Registration: To attend this webinar, use the following button to register in advance in the NWS Learning Center:
Links to the archived Storm of the Month sessions are provided below. NWS employees will need to launch the course using the cyan "Launch Course" buttons in order to receive credit for completion. All other users can launch the session using the orange "Launch" buttons.
- October 2011: Hurricane Irene: Tropical Nature of ZDR and Tornadic Debris Signatures
- November 2011: The Arizona Monsoon: Water and Dust!
- December 2011: Precipitation Types: Dual-Pol's Added Value During Winter Events
- January 2012: Diagnosing Hydrometeors at Radar Beam Level in Real Time Using the WDTB Dual-Pol Radar Decision Aid
- February 2012: Tri-State Winter Storm: Transitioning Precipitation over Long Island
- March 2012: Tornadic Debris Signature (TDS) Application in Weak QLCS and Stronger Supercell Events
- April 2012: Leap Day 2012 Tornadoes Across Southwestern Missouri
- May 2012: An Evolution of Recognizing and Communicating the TDS during Warning Operations
- June 2012: Central New York Hailstorm: An Analysis of Hail and Updraft Signatures
- July 2012: Small Hail, Big Impacts, and Dual-Pol's Added Value
- August 2012: Fire and Rain: A Closer Look at the Little Bear Wildfire
- September 2012: How Wet Can Wet Hail Get?
- October 2012: Fall River, MA, Flash Flood
- November 2012: Extreme Rainfall Event of August 25, 2012
- December 2012: Winter Weather Operational Applications
- January 2013: The Christmas Day Wanna Be Blizzard
- February 2013: Dual-Pol Winter Applications to Aviation Weather
- March 2013: Non-Precipitation Echoes Across Coastal South Carolina and Georgia
- April 2013: The Challenges of Using QPE Operationally
WDTB welcomes your feedback on this series of webinars and how well they supported your understanding of the dual-polarization WSR-88D. Please send us your comments at the following e-mail address: